./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array.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_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/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_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/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_9122c16a-1dfe-41fe-9736-eb454a8f226a/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 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 --- 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 09:30:59,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:30:59,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:30:59,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:30:59,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:30:59,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:30:59,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:30:59,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:30:59,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:30:59,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:30:59,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:30:59,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:30:59,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:30:59,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:30:59,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:30:59,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:30:59,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:30:59,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:30:59,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:30:59,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:30:59,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:30:59,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:30:59,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:30:59,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:30:59,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:30:59,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:30:59,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:30:59,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:30:59,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:30:59,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:30:59,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:30:59,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:30:59,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:30:59,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:30:59,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:30:59,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:30:59,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:30:59,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:30:59,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:30:59,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:30:59,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:30:59,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:30:59,630 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:30:59,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:30:59,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:30:59,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:30:59,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:30:59,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:30:59,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:30:59,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:30:59,633 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:30:59,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:30:59,635 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:30:59,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:30:59,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:30:59,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:30:59,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:30:59,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:30:59,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:30:59,636 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:30:59,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:30:59,637 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:30:59,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:30:59,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:30:59,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:30:59,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:30:59,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:30:59,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:30:59,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:30:59,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:30:59,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:30:59,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:30:59,640 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:30:59,640 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:30:59,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:30:59,640 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_9122c16a-1dfe-41fe-9736-eb454a8f226a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 [2022-11-20 09:30:59,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:31:00,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:31:00,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:31:00,030 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:31:00,031 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:31:00,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2022-11-20 09:31:03,149 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:31:03,346 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:31:03,346 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2022-11-20 09:31:03,354 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/data/3635e364f/a89f048e0ab24b8bbae10afc6aec5bb8/FLAG66afd3458 [2022-11-20 09:31:03,372 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/data/3635e364f/a89f048e0ab24b8bbae10afc6aec5bb8 [2022-11-20 09:31:03,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:31:03,379 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:31:03,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:31:03,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:31:03,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:31:03,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419bf4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03, skipping insertion in model container [2022-11-20 09:31:03,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:31:03,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:31:03,618 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_9122c16a-1dfe-41fe-9736-eb454a8f226a/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2022-11-20 09:31:03,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:31:03,645 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:31:03,672 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_9122c16a-1dfe-41fe-9736-eb454a8f226a/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2022-11-20 09:31:03,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:31:03,690 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:31:03,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03 WrapperNode [2022-11-20 09:31:03,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:31:03,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:31:03,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:31:03,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:31:03,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,741 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 101 [2022-11-20 09:31:03,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:31:03,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:31:03,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:31:03,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:31:03,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,810 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:31:03,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:31:03,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:31:03,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:31:03,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03" (1/1) ... [2022-11-20 09:31:03,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:31:03,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:03,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:31:03,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:31:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:31:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 09:31:03,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 09:31:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 09:31:03,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 09:31:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 09:31:03,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 09:31:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:31:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:31:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:31:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 09:31:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 09:31:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:31:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:31:03,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:31:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:31:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:31:03,922 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 09:31:04,060 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:31:04,062 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:31:04,482 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:31:04,568 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:31:04,568 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 09:31:04,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:04 BoogieIcfgContainer [2022-11-20 09:31:04,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:31:04,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:31:04,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:31:04,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:31:04,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:31:03" (1/3) ... [2022-11-20 09:31:04,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b28793b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:04, skipping insertion in model container [2022-11-20 09:31:04,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:03" (2/3) ... [2022-11-20 09:31:04,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b28793b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:04, skipping insertion in model container [2022-11-20 09:31:04,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:04" (3/3) ... [2022-11-20 09:31:04,585 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2022-11-20 09:31:04,594 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:31:04,606 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:31:04,606 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:31:04,606 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:31:04,701 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 09:31:04,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 153 transitions, 330 flow [2022-11-20 09:31:04,934 INFO L130 PetriNetUnfolder]: 12/150 cut-off events. [2022-11-20 09:31:04,934 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 09:31:04,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 12/150 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2022-11-20 09:31:04,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 153 transitions, 330 flow [2022-11-20 09:31:04,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 139 transitions, 296 flow [2022-11-20 09:31:04,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:31:04,980 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;@184dee65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:31:04,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 09:31:05,059 INFO L130 PetriNetUnfolder]: 12/138 cut-off events. [2022-11-20 09:31:05,059 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 09:31:05,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:05,061 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] [2022-11-20 09:31:05,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:31:05,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:05,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1463698298, now seen corresponding path program 1 times [2022-11-20 09:31:05,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:05,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742754880] [2022-11-20 09:31:05,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:05,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:05,405 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 09:31:05,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:05,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742754880] [2022-11-20 09:31:05,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742754880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:05,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:05,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:31:05,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996276184] [2022-11-20 09:31:05,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:05,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:31:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:05,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:31:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:31:05,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 153 [2022-11-20 09:31:05,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 139 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 140.0) internal successors, (280), 2 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 09:31:05,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:05,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 153 [2022-11-20 09:31:05,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:05,619 INFO L130 PetriNetUnfolder]: 41/264 cut-off events. [2022-11-20 09:31:05,619 INFO L131 PetriNetUnfolder]: For 49/50 co-relation queries the response was YES. [2022-11-20 09:31:05,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 264 events. 41/264 cut-off events. For 49/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 717 event pairs, 15 based on Foata normal form. 42/275 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2022-11-20 09:31:05,625 INFO L137 encePairwiseOnDemand]: 145/153 looper letters, 9 selfloop transitions, 0 changer transitions 4/131 dead transitions. [2022-11-20 09:31:05,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 131 transitions, 298 flow [2022-11-20 09:31:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:31:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 09:31:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 287 transitions. [2022-11-20 09:31:05,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9379084967320261 [2022-11-20 09:31:05,649 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 287 transitions. [2022-11-20 09:31:05,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 287 transitions. [2022-11-20 09:31:05,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:05,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 287 transitions. [2022-11-20 09:31:05,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 09:31:05,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 09:31:05,672 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 09:31:05,674 INFO L175 Difference]: Start difference. First operand has 137 places, 139 transitions, 296 flow. Second operand 2 states and 287 transitions. [2022-11-20 09:31:05,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 131 transitions, 298 flow [2022-11-20 09:31:05,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 286 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 09:31:05,685 INFO L231 Difference]: Finished difference. Result has 132 places, 127 transitions, 260 flow [2022-11-20 09:31:05,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=260, PETRI_PLACES=132, PETRI_TRANSITIONS=127} [2022-11-20 09:31:05,699 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, -5 predicate places. [2022-11-20 09:31:05,699 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 127 transitions, 260 flow [2022-11-20 09:31:05,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.0) internal successors, (280), 2 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 09:31:05,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:05,701 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] [2022-11-20 09:31:05,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:31:05,702 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:31:05,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash 563593522, now seen corresponding path program 1 times [2022-11-20 09:31:05,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:05,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350182696] [2022-11-20 09:31:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:05,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:06,586 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 09:31:06,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:06,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350182696] [2022-11-20 09:31:06,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350182696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:06,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:06,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:31:06,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985778469] [2022-11-20 09:31:06,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:06,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:31:06,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:06,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:31:06,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:31:06,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 153 [2022-11-20 09:31:06,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 127 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 09:31:06,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:06,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 153 [2022-11-20 09:31:06,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:07,043 INFO L130 PetriNetUnfolder]: 295/678 cut-off events. [2022-11-20 09:31:07,043 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-20 09:31:07,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 678 events. 295/678 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3005 event pairs, 167 based on Foata normal form. 1/510 useless extension candidates. Maximal degree in co-relation 1134. Up to 421 conditions per place. [2022-11-20 09:31:07,053 INFO L137 encePairwiseOnDemand]: 143/153 looper letters, 44 selfloop transitions, 6 changer transitions 4/135 dead transitions. [2022-11-20 09:31:07,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 135 transitions, 384 flow [2022-11-20 09:31:07,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:31:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 09:31:07,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 901 transitions. [2022-11-20 09:31:07,059 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.654320987654321 [2022-11-20 09:31:07,059 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 901 transitions. [2022-11-20 09:31:07,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 901 transitions. [2022-11-20 09:31:07,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:07,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 901 transitions. [2022-11-20 09:31:07,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 100.11111111111111) internal successors, (901), 9 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 09:31:07,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states 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 09:31:07,069 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states 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 09:31:07,069 INFO L175 Difference]: Start difference. First operand has 132 places, 127 transitions, 260 flow. Second operand 9 states and 901 transitions. [2022-11-20 09:31:07,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 135 transitions, 384 flow [2022-11-20 09:31:07,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:31:07,075 INFO L231 Difference]: Finished difference. Result has 140 places, 128 transitions, 286 flow [2022-11-20 09:31:07,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=286, PETRI_PLACES=140, PETRI_TRANSITIONS=128} [2022-11-20 09:31:07,077 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 3 predicate places. [2022-11-20 09:31:07,077 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 128 transitions, 286 flow [2022-11-20 09:31:07,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 09:31:07,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:07,078 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] [2022-11-20 09:31:07,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:31:07,079 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:31:07,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:07,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1756520908, now seen corresponding path program 1 times [2022-11-20 09:31:07,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:07,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215431706] [2022-11-20 09:31:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:07,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:07,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:07,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215431706] [2022-11-20 09:31:07,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215431706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:07,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824868738] [2022-11-20 09:31:07,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:07,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:07,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:07,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:07,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:31:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:07,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:31:07,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:07,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:07,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824868738] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:07,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:07,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-20 09:31:07,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346968452] [2022-11-20 09:31:08,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:08,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:31:08,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:08,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:31:08,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:31:08,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 153 [2022-11-20 09:31:08,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 128 transitions, 286 flow. Second operand has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states 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 09:31:08,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:08,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 153 [2022-11-20 09:31:08,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:08,247 INFO L130 PetriNetUnfolder]: 182/617 cut-off events. [2022-11-20 09:31:08,248 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-20 09:31:08,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 617 events. 182/617 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3083 event pairs, 80 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 934. Up to 141 conditions per place. [2022-11-20 09:31:08,255 INFO L137 encePairwiseOnDemand]: 145/153 looper letters, 33 selfloop transitions, 7 changer transitions 0/136 dead transitions. [2022-11-20 09:31:08,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 384 flow [2022-11-20 09:31:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:31:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:31:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2022-11-20 09:31:08,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7759103641456583 [2022-11-20 09:31:08,258 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2022-11-20 09:31:08,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2022-11-20 09:31:08,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:08,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2022-11-20 09:31:08,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states 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 09:31:08,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 09:31:08,264 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 09:31:08,264 INFO L175 Difference]: Start difference. First operand has 140 places, 128 transitions, 286 flow. Second operand 7 states and 831 transitions. [2022-11-20 09:31:08,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 384 flow [2022-11-20 09:31:08,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 136 transitions, 368 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-20 09:31:08,271 INFO L231 Difference]: Finished difference. Result has 139 places, 130 transitions, 303 flow [2022-11-20 09:31:08,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=303, PETRI_PLACES=139, PETRI_TRANSITIONS=130} [2022-11-20 09:31:08,273 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 2 predicate places. [2022-11-20 09:31:08,274 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 130 transitions, 303 flow [2022-11-20 09:31:08,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states 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 09:31:08,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:08,275 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:31:08,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:08,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:08,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:31:08,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:08,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1514646045, now seen corresponding path program 1 times [2022-11-20 09:31:08,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:08,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932152363] [2022-11-20 09:31:08,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:08,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:31:08,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:08,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932152363] [2022-11-20 09:31:08,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932152363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:08,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650384476] [2022-11-20 09:31:08,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:08,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:08,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:08,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:08,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:31:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:31:08,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:31:09,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:31:09,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650384476] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:09,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:09,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-20 09:31:09,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788983526] [2022-11-20 09:31:09,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:09,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:31:09,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:09,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:31:09,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:31:09,469 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 153 [2022-11-20 09:31:09,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 130 transitions, 303 flow. Second operand has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 0 states have call successors, (0), 0 states 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 09:31:09,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:09,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 153 [2022-11-20 09:31:09,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:10,030 INFO L130 PetriNetUnfolder]: 854/1551 cut-off events. [2022-11-20 09:31:10,030 INFO L131 PetriNetUnfolder]: For 557/813 co-relation queries the response was YES. [2022-11-20 09:31:10,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3288 conditions, 1551 events. 854/1551 cut-off events. For 557/813 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8602 event pairs, 215 based on Foata normal form. 256/1642 useless extension candidates. Maximal degree in co-relation 3280. Up to 429 conditions per place. [2022-11-20 09:31:10,044 INFO L137 encePairwiseOnDemand]: 142/153 looper letters, 84 selfloop transitions, 17 changer transitions 0/190 dead transitions. [2022-11-20 09:31:10,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 190 transitions, 676 flow [2022-11-20 09:31:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:31:10,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:31:10,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1261 transitions. [2022-11-20 09:31:10,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7492572786690433 [2022-11-20 09:31:10,048 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1261 transitions. [2022-11-20 09:31:10,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1261 transitions. [2022-11-20 09:31:10,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:10,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1261 transitions. [2022-11-20 09:31:10,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.63636363636364) internal successors, (1261), 11 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states 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 09:31:10,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states 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 09:31:10,057 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states 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 09:31:10,057 INFO L175 Difference]: Start difference. First operand has 139 places, 130 transitions, 303 flow. Second operand 11 states and 1261 transitions. [2022-11-20 09:31:10,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 190 transitions, 676 flow [2022-11-20 09:31:10,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 190 transitions, 663 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:31:10,062 INFO L231 Difference]: Finished difference. Result has 149 places, 141 transitions, 383 flow [2022-11-20 09:31:10,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=383, PETRI_PLACES=149, PETRI_TRANSITIONS=141} [2022-11-20 09:31:10,064 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 12 predicate places. [2022-11-20 09:31:10,064 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 141 transitions, 383 flow [2022-11-20 09:31:10,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 0 states have call successors, (0), 0 states 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 09:31:10,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:10,065 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] [2022-11-20 09:31:10,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:10,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:10,270 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:31:10,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash -264680869, now seen corresponding path program 2 times [2022-11-20 09:31:10,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:10,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355147358] [2022-11-20 09:31:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:10,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:31:10,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:10,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355147358] [2022-11-20 09:31:10,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355147358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:10,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128715369] [2022-11-20 09:31:10,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:31:10,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:10,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:10,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:10,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:31:10,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:31:10,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:10,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:31:10,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:31:10,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:10,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128715369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:10,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:31:10,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-20 09:31:10,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256918735] [2022-11-20 09:31:10,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:10,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:31:10,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:10,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:31:10,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:31:10,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 153 [2022-11-20 09:31:10,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 141 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 09:31:10,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:10,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 153 [2022-11-20 09:31:10,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:11,393 INFO L130 PetriNetUnfolder]: 617/1313 cut-off events. [2022-11-20 09:31:11,394 INFO L131 PetriNetUnfolder]: For 865/1079 co-relation queries the response was YES. [2022-11-20 09:31:11,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3058 conditions, 1313 events. 617/1313 cut-off events. For 865/1079 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7315 event pairs, 178 based on Foata normal form. 241/1517 useless extension candidates. Maximal degree in co-relation 3046. Up to 535 conditions per place. [2022-11-20 09:31:11,406 INFO L137 encePairwiseOnDemand]: 144/153 looper letters, 48 selfloop transitions, 13 changer transitions 0/154 dead transitions. [2022-11-20 09:31:11,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 154 transitions, 558 flow [2022-11-20 09:31:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:31:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 09:31:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 857 transitions. [2022-11-20 09:31:11,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7001633986928104 [2022-11-20 09:31:11,409 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 857 transitions. [2022-11-20 09:31:11,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 857 transitions. [2022-11-20 09:31:11,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:11,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 857 transitions. [2022-11-20 09:31:11,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 107.125) internal successors, (857), 8 states have internal predecessors, (857), 0 states have call successors, (0), 0 states 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 09:31:11,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states 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 09:31:11,415 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states 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 09:31:11,415 INFO L175 Difference]: Start difference. First operand has 149 places, 141 transitions, 383 flow. Second operand 8 states and 857 transitions. [2022-11-20 09:31:11,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 154 transitions, 558 flow [2022-11-20 09:31:11,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 154 transitions, 551 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:31:11,426 INFO L231 Difference]: Finished difference. Result has 154 places, 144 transitions, 444 flow [2022-11-20 09:31:11,426 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=444, PETRI_PLACES=154, PETRI_TRANSITIONS=144} [2022-11-20 09:31:11,429 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 17 predicate places. [2022-11-20 09:31:11,429 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 144 transitions, 444 flow [2022-11-20 09:31:11,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 09:31:11,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:11,430 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] [2022-11-20 09:31:11,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:11,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:11,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:31:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:11,637 INFO L85 PathProgramCache]: Analyzing trace with hash -129815812, now seen corresponding path program 1 times [2022-11-20 09:31:11,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:11,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517150765] [2022-11-20 09:31:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:11,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:13,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:13,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517150765] [2022-11-20 09:31:13,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517150765] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:13,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132809548] [2022-11-20 09:31:13,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:13,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:13,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:13,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:13,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:31:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 09:31:13,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:14,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 09:31:15,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 09:31:15,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 09:31:15,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 09:31:16,026 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:31:16,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 43 [2022-11-20 09:31:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:16,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:28,370 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:31:28,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 66 [2022-11-20 09:31:28,387 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:31:28,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 375 treesize of output 369 [2022-11-20 09:31:28,405 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:31:28,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 359 treesize of output 329 [2022-11-20 09:31:28,423 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:31:28,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 319 treesize of output 309 [2022-11-20 09:31:28,446 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:31:28,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 205 treesize of output 205 [2022-11-20 09:31:30,439 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:31:30,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 70 [2022-11-20 09:31:30,458 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:31:30,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 845 treesize of output 809 [2022-11-20 09:31:30,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:30,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 559 treesize of output 531 [2022-11-20 09:31:30,512 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:31:30,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 777 treesize of output 725 [2022-11-20 09:31:30,548 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:31:30,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 721 treesize of output 613 [2022-11-20 09:31:31,481 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 09:31:31,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 1 [2022-11-20 09:31:31,494 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:31:31,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2022-11-20 09:31:31,519 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:31:31,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2187 treesize of output 2095 [2022-11-20 09:31:31,584 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:31:31,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2091 treesize of output 2031 [2022-11-20 09:31:31,641 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:31:31,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2027 treesize of output 1775 [2022-11-20 09:31:31,697 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:31:31,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1771 treesize of output 1647 [2022-11-20 09:31:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:48,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132809548] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:48,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:31:48,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 31, 25] total 71 [2022-11-20 09:31:48,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441677491] [2022-11-20 09:31:48,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:48,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-11-20 09:31:48,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:48,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-11-20 09:31:48,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=4089, Unknown=94, NotChecked=0, Total=4970 [2022-11-20 09:31:48,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 153 [2022-11-20 09:31:48,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 144 transitions, 444 flow. Second operand has 71 states, 71 states have (on average 57.816901408450704) internal successors, (4105), 71 states have internal predecessors, (4105), 0 states have call successors, (0), 0 states 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 09:31:48,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:48,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 153 [2022-11-20 09:31:48,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:11,961 INFO L130 PetriNetUnfolder]: 12960/20537 cut-off events. [2022-11-20 09:32:11,962 INFO L131 PetriNetUnfolder]: For 21403/21403 co-relation queries the response was YES. [2022-11-20 09:32:12,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54767 conditions, 20537 events. 12960/20537 cut-off events. For 21403/21403 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 151344 event pairs, 948 based on Foata normal form. 2/20383 useless extension candidates. Maximal degree in co-relation 54753. Up to 6283 conditions per place. [2022-11-20 09:32:12,154 INFO L137 encePairwiseOnDemand]: 112/153 looper letters, 903 selfloop transitions, 520 changer transitions 12/1483 dead transitions. [2022-11-20 09:32:12,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 1483 transitions, 8272 flow [2022-11-20 09:32:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-11-20 09:32:12,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2022-11-20 09:32:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 8856 transitions. [2022-11-20 09:32:12,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4224989265779304 [2022-11-20 09:32:12,181 INFO L72 ComplementDD]: Start complementDD. Operand 137 states and 8856 transitions. [2022-11-20 09:32:12,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 8856 transitions. [2022-11-20 09:32:12,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:12,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 137 states and 8856 transitions. [2022-11-20 09:32:12,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 138 states, 137 states have (on average 64.64233576642336) internal successors, (8856), 137 states have internal predecessors, (8856), 0 states have call successors, (0), 0 states 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 09:32:12,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 138 states, 138 states have (on average 153.0) internal successors, (21114), 138 states have internal predecessors, (21114), 0 states have call successors, (0), 0 states 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 09:32:12,348 INFO L81 ComplementDD]: Finished complementDD. Result has 138 states, 138 states have (on average 153.0) internal successors, (21114), 138 states have internal predecessors, (21114), 0 states have call successors, (0), 0 states 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 09:32:12,348 INFO L175 Difference]: Start difference. First operand has 154 places, 144 transitions, 444 flow. Second operand 137 states and 8856 transitions. [2022-11-20 09:32:12,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 1483 transitions, 8272 flow [2022-11-20 09:32:12,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 1483 transitions, 8124 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:12,740 INFO L231 Difference]: Finished difference. Result has 344 places, 689 transitions, 4476 flow [2022-11-20 09:32:12,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=137, PETRI_FLOW=4476, PETRI_PLACES=344, PETRI_TRANSITIONS=689} [2022-11-20 09:32:12,742 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 207 predicate places. [2022-11-20 09:32:12,742 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 689 transitions, 4476 flow [2022-11-20 09:32:12,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 57.816901408450704) internal successors, (4105), 71 states have internal predecessors, (4105), 0 states have call successors, (0), 0 states 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 09:32:12,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:12,744 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] [2022-11-20 09:32:12,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:12,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 09:32:12,950 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:32:12,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1768493138, now seen corresponding path program 2 times [2022-11-20 09:32:12,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:12,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125247583] [2022-11-20 09:32:12,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:14,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:14,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125247583] [2022-11-20 09:32:14,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125247583] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:14,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580373342] [2022-11-20 09:32:14,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:32:14,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:14,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:14,555 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:14,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:32:14,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:32:14,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:14,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 09:32:14,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:15,889 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:32:15,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 43 [2022-11-20 09:32:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:32:16,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:16,913 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:32:16,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 51 [2022-11-20 09:32:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:32:17,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580373342] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:17,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:32:17,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 15] total 46 [2022-11-20 09:32:17,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202598172] [2022-11-20 09:32:17,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:17,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 09:32:17,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:17,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 09:32:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1729, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 09:32:17,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 153 [2022-11-20 09:32:17,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 689 transitions, 4476 flow. Second operand has 46 states, 46 states have (on average 69.8695652173913) internal successors, (3214), 46 states have internal predecessors, (3214), 0 states have call successors, (0), 0 states 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 09:32:17,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:17,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 153 [2022-11-20 09:32:17,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:27,901 INFO L130 PetriNetUnfolder]: 15564/25182 cut-off events. [2022-11-20 09:32:27,901 INFO L131 PetriNetUnfolder]: For 176544/176693 co-relation queries the response was YES. [2022-11-20 09:32:28,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104030 conditions, 25182 events. 15564/25182 cut-off events. For 176544/176693 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 198682 event pairs, 2789 based on Foata normal form. 32/25037 useless extension candidates. Maximal degree in co-relation 103958. Up to 13774 conditions per place. [2022-11-20 09:32:28,473 INFO L137 encePairwiseOnDemand]: 120/153 looper letters, 611 selfloop transitions, 512 changer transitions 20/1197 dead transitions. [2022-11-20 09:32:28,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 1197 transitions, 10321 flow [2022-11-20 09:32:28,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 09:32:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-20 09:32:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3762 transitions. [2022-11-20 09:32:28,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48212226066897346 [2022-11-20 09:32:28,481 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3762 transitions. [2022-11-20 09:32:28,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3762 transitions. [2022-11-20 09:32:28,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:28,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3762 transitions. [2022-11-20 09:32:28,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 73.76470588235294) internal successors, (3762), 51 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states 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 09:32:28,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 153.0) internal successors, (7956), 52 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states 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 09:32:28,519 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 153.0) internal successors, (7956), 52 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states 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 09:32:28,519 INFO L175 Difference]: Start difference. First operand has 344 places, 689 transitions, 4476 flow. Second operand 51 states and 3762 transitions. [2022-11-20 09:32:28,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 1197 transitions, 10321 flow [2022-11-20 09:32:30,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 1197 transitions, 10090 flow, removed 67 selfloop flow, removed 18 redundant places. [2022-11-20 09:32:30,737 INFO L231 Difference]: Finished difference. Result has 400 places, 961 transitions, 8397 flow [2022-11-20 09:32:30,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=4323, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8397, PETRI_PLACES=400, PETRI_TRANSITIONS=961} [2022-11-20 09:32:30,739 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 263 predicate places. [2022-11-20 09:32:30,739 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 961 transitions, 8397 flow [2022-11-20 09:32:30,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 69.8695652173913) internal successors, (3214), 46 states have internal predecessors, (3214), 0 states have call successors, (0), 0 states 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 09:32:30,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:30,740 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] [2022-11-20 09:32:30,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 09:32:30,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:30,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:32:30,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:30,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1999746360, now seen corresponding path program 3 times [2022-11-20 09:32:30,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:30,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098053193] [2022-11-20 09:32:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:30,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:32,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:32,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098053193] [2022-11-20 09:32:32,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098053193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:32,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717046610] [2022-11-20 09:32:32,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:32:32,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:32,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:32,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:32,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:32:33,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 09:32:33,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:33,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 09:32:33,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:34,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:32:34,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 43 [2022-11-20 09:32:35,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:35,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:35,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:32:35,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 51 [2022-11-20 09:32:36,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:36,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717046610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:36,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:32:36,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24, 18] total 55 [2022-11-20 09:32:36,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047705249] [2022-11-20 09:32:36,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:36,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-20 09:32:36,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:36,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-20 09:32:36,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=2569, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 09:32:36,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 153 [2022-11-20 09:32:36,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 961 transitions, 8397 flow. Second operand has 55 states, 55 states have (on average 68.36363636363636) internal successors, (3760), 55 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states 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 09:32:36,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:36,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 153 [2022-11-20 09:32:36,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:57,855 INFO L130 PetriNetUnfolder]: 20258/33180 cut-off events. [2022-11-20 09:32:57,856 INFO L131 PetriNetUnfolder]: For 367932/368170 co-relation queries the response was YES. [2022-11-20 09:32:58,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163413 conditions, 33180 events. 20258/33180 cut-off events. For 367932/368170 co-relation queries the response was YES. Maximal size of possible extension queue 1784. Compared 275686 event pairs, 4092 based on Foata normal form. 45/32993 useless extension candidates. Maximal degree in co-relation 163318. Up to 15030 conditions per place. [2022-11-20 09:32:58,588 INFO L137 encePairwiseOnDemand]: 118/153 looper letters, 770 selfloop transitions, 992 changer transitions 12/1826 dead transitions. [2022-11-20 09:32:58,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 1826 transitions, 19815 flow [2022-11-20 09:32:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-20 09:32:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-11-20 09:32:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 5790 transitions. [2022-11-20 09:32:58,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4790270538595185 [2022-11-20 09:32:58,611 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 5790 transitions. [2022-11-20 09:32:58,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 5790 transitions. [2022-11-20 09:32:58,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:58,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 5790 transitions. [2022-11-20 09:32:58,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 73.29113924050633) internal successors, (5790), 79 states have internal predecessors, (5790), 0 states have call successors, (0), 0 states 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 09:32:58,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 153.0) internal successors, (12240), 80 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states 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 09:32:58,658 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 153.0) internal successors, (12240), 80 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states 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 09:32:58,659 INFO L175 Difference]: Start difference. First operand has 400 places, 961 transitions, 8397 flow. Second operand 79 states and 5790 transitions. [2022-11-20 09:32:58,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 1826 transitions, 19815 flow [2022-11-20 09:33:09,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 1826 transitions, 19158 flow, removed 280 selfloop flow, removed 19 redundant places. [2022-11-20 09:33:09,287 INFO L231 Difference]: Finished difference. Result has 492 places, 1427 transitions, 16199 flow [2022-11-20 09:33:09,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=8086, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=565, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=16199, PETRI_PLACES=492, PETRI_TRANSITIONS=1427} [2022-11-20 09:33:09,289 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 355 predicate places. [2022-11-20 09:33:09,289 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 1427 transitions, 16199 flow [2022-11-20 09:33:09,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 68.36363636363636) internal successors, (3760), 55 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states 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 09:33:09,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:09,291 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] [2022-11-20 09:33:09,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 09:33:09,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:09,492 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:33:09,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash 824667884, now seen corresponding path program 4 times [2022-11-20 09:33:09,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:09,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547636829] [2022-11-20 09:33:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:09,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:11,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:11,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547636829] [2022-11-20 09:33:11,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547636829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:11,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954890221] [2022-11-20 09:33:11,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:33:11,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:11,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:11,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:11,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:33:11,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:33:11,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:11,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-20 09:33:11,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:13,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:13,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-20 09:33:14,075 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:33:14,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 43 [2022-11-20 09:33:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:14,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:16,105 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:33:16,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 161 treesize of output 149 [2022-11-20 09:33:16,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 78 [2022-11-20 09:33:16,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2022-11-20 09:33:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:18,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954890221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:33:18,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:33:18,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 27] total 67 [2022-11-20 09:33:18,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60203035] [2022-11-20 09:33:18,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:18,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-20 09:33:18,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-20 09:33:18,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=3941, Unknown=7, NotChecked=0, Total=4422 [2022-11-20 09:33:18,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 153 [2022-11-20 09:33:18,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 1427 transitions, 16199 flow. Second operand has 67 states, 67 states have (on average 63.73134328358209) internal successors, (4270), 67 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states 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 09:33:18,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:18,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 153 [2022-11-20 09:33:18,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:39,127 INFO L130 PetriNetUnfolder]: 19949/34767 cut-off events. [2022-11-20 09:33:39,127 INFO L131 PetriNetUnfolder]: For 600506/602494 co-relation queries the response was YES. [2022-11-20 09:33:39,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201570 conditions, 34767 events. 19949/34767 cut-off events. For 600506/602494 co-relation queries the response was YES. Maximal size of possible extension queue 1901. Compared 313086 event pairs, 2679 based on Foata normal form. 1102/35260 useless extension candidates. Maximal degree in co-relation 201442. Up to 12254 conditions per place. [2022-11-20 09:33:40,073 INFO L137 encePairwiseOnDemand]: 121/153 looper letters, 659 selfloop transitions, 1156 changer transitions 12/2001 dead transitions. [2022-11-20 09:33:40,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 2001 transitions, 26357 flow [2022-11-20 09:33:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 09:33:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 09:33:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3361 transitions. [2022-11-20 09:33:40,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.448312658396692 [2022-11-20 09:33:40,082 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 3361 transitions. [2022-11-20 09:33:40,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 3361 transitions. [2022-11-20 09:33:40,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:40,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 3361 transitions. [2022-11-20 09:33:40,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 68.59183673469387) internal successors, (3361), 49 states have internal predecessors, (3361), 0 states have call successors, (0), 0 states 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 09:33:40,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 153.0) internal successors, (7650), 50 states have internal predecessors, (7650), 0 states have call successors, (0), 0 states 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 09:33:40,104 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 153.0) internal successors, (7650), 50 states have internal predecessors, (7650), 0 states have call successors, (0), 0 states 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 09:33:40,104 INFO L175 Difference]: Start difference. First operand has 492 places, 1427 transitions, 16199 flow. Second operand 49 states and 3361 transitions. [2022-11-20 09:33:40,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 2001 transitions, 26357 flow [2022-11-20 09:33:52,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 2001 transitions, 25432 flow, removed 443 selfloop flow, removed 23 redundant places. [2022-11-20 09:33:52,170 INFO L231 Difference]: Finished difference. Result has 534 places, 1737 transitions, 23660 flow [2022-11-20 09:33:52,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=15654, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=876, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=23660, PETRI_PLACES=534, PETRI_TRANSITIONS=1737} [2022-11-20 09:33:52,173 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 397 predicate places. [2022-11-20 09:33:52,173 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 1737 transitions, 23660 flow [2022-11-20 09:33:52,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 63.73134328358209) internal successors, (4270), 67 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states 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 09:33:52,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:52,175 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] [2022-11-20 09:33:52,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:52,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:52,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:33:52,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:52,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1247318294, now seen corresponding path program 5 times [2022-11-20 09:33:52,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:52,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849155053] [2022-11-20 09:33:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:52,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:54,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:54,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849155053] [2022-11-20 09:33:54,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849155053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:54,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648994692] [2022-11-20 09:33:54,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:33:54,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:54,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:54,500 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:54,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9122c16a-1dfe-41fe-9736-eb454a8f226a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:33:54,622 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:33:54,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:54,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 09:33:54,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:54,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 09:33:54,729 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:33:54,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 09:33:55,075 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:33:55,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-20 09:33:55,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-20 09:33:56,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:56,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-20 09:33:56,458 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:33:56,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 43 [2022-11-20 09:33:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:33:57,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:59,135 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:33:59,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 435 treesize of output 407 [2022-11-20 09:33:59,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 336 [2022-11-20 09:33:59,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 330 [2022-11-20 09:33:59,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 330 treesize of output 282 [2022-11-20 09:33:59,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 258 [2022-11-20 09:34:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:34:02,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648994692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:02,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:34:02,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 24] total 66 [2022-11-20 09:34:02,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072925552] [2022-11-20 09:34:02,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:02,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-20 09:34:02,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:02,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-20 09:34:02,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=3739, Unknown=4, NotChecked=0, Total=4290 [2022-11-20 09:34:02,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 153 [2022-11-20 09:34:02,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 1737 transitions, 23660 flow. Second operand has 66 states, 66 states have (on average 56.06060606060606) internal successors, (3700), 66 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states 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 09:34:02,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:34:02,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 153 [2022-11-20 09:34:02,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand