./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a --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 b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 --- 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-b5237d8 [2022-11-21 16:26:13,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:26:13,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:26:13,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:26:13,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:26:13,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:26:13,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:26:13,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:26:13,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:26:13,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:26:13,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:26:13,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:26:13,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:26:13,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:26:13,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:26:13,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:26:13,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:26:13,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:26:13,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:26:13,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:26:13,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:26:13,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:26:13,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:26:13,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:26:13,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:26:13,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:26:13,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:26:13,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:26:13,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:26:13,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:26:13,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:26:13,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:26:13,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:26:13,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:26:13,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:26:13,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:26:13,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:26:13,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:26:13,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:26:13,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:26:13,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:26:13,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:26:13,551 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:26:13,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:26:13,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:26:13,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:26:13,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:26:13,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:26:13,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:26:13,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:26:13,554 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:26:13,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:26:13,554 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:26:13,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:26:13,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:26:13,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:26:13,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:26:13,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:26:13,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:26:13,555 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:26:13,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:26:13,556 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:26:13,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:26:13,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:26:13,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:26:13,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:26:13,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:26:13,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:26:13,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:26:13,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:26:13,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:26:13,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:26:13,558 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:26:13,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:26:13,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:26:13,558 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_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 [2022-11-21 16:26:13,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:26:13,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:26:13,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:26:13,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:26:13,853 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:26:13,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-11-21 16:26:16,966 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:26:17,160 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:26:17,161 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-11-21 16:26:17,170 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/data/ba1fef1d5/7040adb396f5462fb348703530c81a65/FLAG057ff3b72 [2022-11-21 16:26:17,191 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/data/ba1fef1d5/7040adb396f5462fb348703530c81a65 [2022-11-21 16:26:17,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:26:17,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:26:17,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:26:17,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:26:17,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:26:17,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@764b1c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17, skipping insertion in model container [2022-11-21 16:26:17,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:26:17,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:26:17,500 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_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-11-21 16:26:17,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:26:17,529 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:26:17,584 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_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-11-21 16:26:17,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:26:17,613 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:26:17,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17 WrapperNode [2022-11-21 16:26:17,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:26:17,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:26:17,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:26:17,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:26:17,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,696 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 204 [2022-11-21 16:26:17,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:26:17,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:26:17,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:26:17,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:26:17,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:26:17,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:26:17,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:26:17,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:26:17,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17" (1/1) ... [2022-11-21 16:26:17,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:26:17,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:26:17,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:26:17,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:26:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:26:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:26:17,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:26:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:26:17,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:26:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:26:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:26:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:26:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:26:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:26:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:26:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:26:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:26:17,871 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:26:17,982 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:26:17,984 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:26:18,359 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:26:18,383 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:26:18,383 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 16:26:18,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:26:18 BoogieIcfgContainer [2022-11-21 16:26:18,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:26:18,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:26:18,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:26:18,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:26:18,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:26:17" (1/3) ... [2022-11-21 16:26:18,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462b5df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:26:18, skipping insertion in model container [2022-11-21 16:26:18,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:26:17" (2/3) ... [2022-11-21 16:26:18,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462b5df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:26:18, skipping insertion in model container [2022-11-21 16:26:18,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:26:18" (3/3) ... [2022-11-21 16:26:18,395 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2022-11-21 16:26:18,421 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:26:18,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:26:18,432 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:26:18,433 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:26:18,620 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:26:18,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 269 transitions, 554 flow [2022-11-21 16:26:18,799 INFO L130 PetriNetUnfolder]: 24/267 cut-off events. [2022-11-21 16:26:18,799 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:26:18,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 267 events. 24/267 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 515 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 171. Up to 2 conditions per place. [2022-11-21 16:26:18,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 269 transitions, 554 flow [2022-11-21 16:26:18,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 258 transitions, 528 flow [2022-11-21 16:26:18,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:26:18,832 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;@44b700, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:26:18,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-21 16:26:18,892 INFO L130 PetriNetUnfolder]: 20/215 cut-off events. [2022-11-21 16:26:18,893 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:26:18,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:18,894 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] [2022-11-21 16:26:18,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:18,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:18,900 INFO L85 PathProgramCache]: Analyzing trace with hash 283535942, now seen corresponding path program 1 times [2022-11-21 16:26:18,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:18,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381453866] [2022-11-21 16:26:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:18,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:19,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:19,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381453866] [2022-11-21 16:26:19,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381453866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:19,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:19,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:26:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913836991] [2022-11-21 16:26:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:19,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:26:19,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:19,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:26:19,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:26:19,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 269 [2022-11-21 16:26:19,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 258 transitions, 528 flow. Second operand has 2 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:19,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:19,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 269 [2022-11-21 16:26:19,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:26:19,296 INFO L130 PetriNetUnfolder]: 7/241 cut-off events. [2022-11-21 16:26:19,296 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-21 16:26:19,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 241 events. 7/241 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 465 event pairs, 0 based on Foata normal form. 20/240 useless extension candidates. Maximal degree in co-relation 160. Up to 5 conditions per place. [2022-11-21 16:26:19,300 INFO L137 encePairwiseOnDemand]: 252/269 looper letters, 4 selfloop transitions, 0 changer transitions 4/241 dead transitions. [2022-11-21 16:26:19,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 241 transitions, 502 flow [2022-11-21 16:26:19,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:26:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:26:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 515 transitions. [2022-11-21 16:26:19,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9572490706319703 [2022-11-21 16:26:19,316 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 515 transitions. [2022-11-21 16:26:19,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 515 transitions. [2022-11-21 16:26:19,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:26:19,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 515 transitions. [2022-11-21 16:26:19,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 257.5) internal successors, (515), 2 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:19,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:19,344 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:19,346 INFO L175 Difference]: Start difference. First operand has 241 places, 258 transitions, 528 flow. Second operand 2 states and 515 transitions. [2022-11-21 16:26:19,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 241 transitions, 502 flow [2022-11-21 16:26:19,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 241 transitions, 494 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:26:19,358 INFO L231 Difference]: Finished difference. Result has 238 places, 237 transitions, 478 flow [2022-11-21 16:26:19,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=238, PETRI_TRANSITIONS=237} [2022-11-21 16:26:19,367 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, -3 predicate places. [2022-11-21 16:26:19,368 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 237 transitions, 478 flow [2022-11-21 16:26:19,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:19,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:19,369 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] [2022-11-21 16:26:19,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:26:19,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:19,373 INFO L85 PathProgramCache]: Analyzing trace with hash -381179899, now seen corresponding path program 1 times [2022-11-21 16:26:19,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:19,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309704832] [2022-11-21 16:26:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:19,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:19,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:19,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309704832] [2022-11-21 16:26:19,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309704832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:19,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:19,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:26:19,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599895714] [2022-11-21 16:26:19,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:19,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:26:19,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:19,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:26:19,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:26:19,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 269 [2022-11-21 16:26:19,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 237 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 217.25) internal successors, (869), 4 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:19,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:19,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 269 [2022-11-21 16:26:19,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:26:20,268 INFO L130 PetriNetUnfolder]: 214/994 cut-off events. [2022-11-21 16:26:20,269 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-21 16:26:20,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 994 events. 214/994 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5040 event pairs, 58 based on Foata normal form. 0/834 useless extension candidates. Maximal degree in co-relation 1352. Up to 274 conditions per place. [2022-11-21 16:26:20,279 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 49 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-21 16:26:20,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 254 transitions, 622 flow [2022-11-21 16:26:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:26:20,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 16:26:20,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 911 transitions. [2022-11-21 16:26:20,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8466542750929368 [2022-11-21 16:26:20,287 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 911 transitions. [2022-11-21 16:26:20,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 911 transitions. [2022-11-21 16:26:20,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:26:20,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 911 transitions. [2022-11-21 16:26:20,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.75) internal successors, (911), 4 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:20,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:20,296 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:20,297 INFO L175 Difference]: Start difference. First operand has 238 places, 237 transitions, 478 flow. Second operand 4 states and 911 transitions. [2022-11-21 16:26:20,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 254 transitions, 622 flow [2022-11-21 16:26:20,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 254 transitions, 622 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:26:20,309 INFO L231 Difference]: Finished difference. Result has 239 places, 241 transitions, 512 flow [2022-11-21 16:26:20,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=512, PETRI_PLACES=239, PETRI_TRANSITIONS=241} [2022-11-21 16:26:20,310 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, -2 predicate places. [2022-11-21 16:26:20,310 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 241 transitions, 512 flow [2022-11-21 16:26:20,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.25) internal successors, (869), 4 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:20,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:20,312 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] [2022-11-21 16:26:20,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:26:20,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:20,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:20,315 INFO L85 PathProgramCache]: Analyzing trace with hash -979073784, now seen corresponding path program 1 times [2022-11-21 16:26:20,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:20,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899482017] [2022-11-21 16:26:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:21,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:21,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899482017] [2022-11-21 16:26:21,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899482017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:21,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:21,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:26:21,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664533486] [2022-11-21 16:26:21,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:21,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:26:21,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:21,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:26:21,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:26:21,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 269 [2022-11-21 16:26:21,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 241 transitions, 512 flow. Second operand has 8 states, 8 states have (on average 212.125) internal successors, (1697), 8 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:21,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:21,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 269 [2022-11-21 16:26:21,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:26:22,760 INFO L130 PetriNetUnfolder]: 577/2768 cut-off events. [2022-11-21 16:26:22,760 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-21 16:26:22,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3985 conditions, 2768 events. 577/2768 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 21188 event pairs, 146 based on Foata normal form. 11/2474 useless extension candidates. Maximal degree in co-relation 3979. Up to 368 conditions per place. [2022-11-21 16:26:22,777 INFO L137 encePairwiseOnDemand]: 255/269 looper letters, 170 selfloop transitions, 35 changer transitions 0/401 dead transitions. [2022-11-21 16:26:22,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 401 transitions, 1302 flow [2022-11-21 16:26:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:26:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:26:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3573 transitions. [2022-11-21 16:26:22,785 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8301579925650557 [2022-11-21 16:26:22,786 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3573 transitions. [2022-11-21 16:26:22,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3573 transitions. [2022-11-21 16:26:22,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:26:22,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3573 transitions. [2022-11-21 16:26:22,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 223.3125) internal successors, (3573), 16 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:22,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:22,808 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:22,808 INFO L175 Difference]: Start difference. First operand has 239 places, 241 transitions, 512 flow. Second operand 16 states and 3573 transitions. [2022-11-21 16:26:22,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 401 transitions, 1302 flow [2022-11-21 16:26:22,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 401 transitions, 1278 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-21 16:26:22,822 INFO L231 Difference]: Finished difference. Result has 263 places, 268 transitions, 736 flow [2022-11-21 16:26:22,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=736, PETRI_PLACES=263, PETRI_TRANSITIONS=268} [2022-11-21 16:26:22,825 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 22 predicate places. [2022-11-21 16:26:22,825 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 268 transitions, 736 flow [2022-11-21 16:26:22,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 212.125) internal successors, (1697), 8 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:22,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:22,827 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] [2022-11-21 16:26:22,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:26:22,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:22,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash -476041908, now seen corresponding path program 1 times [2022-11-21 16:26:22,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:22,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201610412] [2022-11-21 16:26:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:22,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:23,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:23,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201610412] [2022-11-21 16:26:23,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201610412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:23,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:23,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:26:23,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087597447] [2022-11-21 16:26:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:23,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:26:23,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:23,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:26:23,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:26:23,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-11-21 16:26:23,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 268 transitions, 736 flow. Second operand has 5 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:23,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:23,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-11-21 16:26:23,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:26:24,091 INFO L130 PetriNetUnfolder]: 572/2836 cut-off events. [2022-11-21 16:26:24,092 INFO L131 PetriNetUnfolder]: For 2957/2957 co-relation queries the response was YES. [2022-11-21 16:26:24,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 2836 events. 572/2836 cut-off events. For 2957/2957 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 21895 event pairs, 282 based on Foata normal form. 2/2618 useless extension candidates. Maximal degree in co-relation 5109. Up to 580 conditions per place. [2022-11-21 16:26:24,109 INFO L137 encePairwiseOnDemand]: 261/269 looper letters, 118 selfloop transitions, 21 changer transitions 0/338 dead transitions. [2022-11-21 16:26:24,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 338 transitions, 1234 flow [2022-11-21 16:26:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:26:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:26:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1377 transitions. [2022-11-21 16:26:24,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8531598513011153 [2022-11-21 16:26:24,113 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1377 transitions. [2022-11-21 16:26:24,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1377 transitions. [2022-11-21 16:26:24,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:26:24,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1377 transitions. [2022-11-21 16:26:24,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.5) internal successors, (1377), 6 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) [2022-11-21 16:26:24,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:24,125 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:24,125 INFO L175 Difference]: Start difference. First operand has 263 places, 268 transitions, 736 flow. Second operand 6 states and 1377 transitions. [2022-11-21 16:26:24,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 338 transitions, 1234 flow [2022-11-21 16:26:24,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 338 transitions, 1218 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:26:24,147 INFO L231 Difference]: Finished difference. Result has 268 places, 270 transitions, 809 flow [2022-11-21 16:26:24,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=809, PETRI_PLACES=268, PETRI_TRANSITIONS=270} [2022-11-21 16:26:24,150 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 27 predicate places. [2022-11-21 16:26:24,150 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 270 transitions, 809 flow [2022-11-21 16:26:24,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:24,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:24,156 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] [2022-11-21 16:26:24,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:26:24,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:24,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:24,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1281550832, now seen corresponding path program 2 times [2022-11-21 16:26:24,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:24,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125157748] [2022-11-21 16:26:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:24,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:24,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125157748] [2022-11-21 16:26:24,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125157748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:24,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:24,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:26:24,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078502194] [2022-11-21 16:26:24,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:24,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:26:24,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:24,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:26:24,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:26:24,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 269 [2022-11-21 16:26:24,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 270 transitions, 809 flow. Second operand has 8 states, 8 states have (on average 214.375) internal successors, (1715), 8 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:24,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:24,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 269 [2022-11-21 16:26:24,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:26:25,299 INFO L130 PetriNetUnfolder]: 406/2238 cut-off events. [2022-11-21 16:26:25,300 INFO L131 PetriNetUnfolder]: For 3287/3410 co-relation queries the response was YES. [2022-11-21 16:26:25,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 2238 events. 406/2238 cut-off events. For 3287/3410 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 16458 event pairs, 145 based on Foata normal form. 59/2124 useless extension candidates. Maximal degree in co-relation 4150. Up to 533 conditions per place. [2022-11-21 16:26:25,316 INFO L137 encePairwiseOnDemand]: 257/269 looper letters, 71 selfloop transitions, 22 changer transitions 0/304 dead transitions. [2022-11-21 16:26:25,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 304 transitions, 1220 flow [2022-11-21 16:26:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:26:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:26:25,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2197 transitions. [2022-11-21 16:26:25,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.816728624535316 [2022-11-21 16:26:25,322 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2197 transitions. [2022-11-21 16:26:25,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2197 transitions. [2022-11-21 16:26:25,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:26:25,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2197 transitions. [2022-11-21 16:26:25,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 219.7) internal successors, (2197), 10 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:25,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 269.0) internal successors, (2959), 11 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:25,336 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 269.0) internal successors, (2959), 11 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:25,337 INFO L175 Difference]: Start difference. First operand has 268 places, 270 transitions, 809 flow. Second operand 10 states and 2197 transitions. [2022-11-21 16:26:25,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 304 transitions, 1220 flow [2022-11-21 16:26:25,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 304 transitions, 1202 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:26:25,351 INFO L231 Difference]: Finished difference. Result has 279 places, 273 transitions, 867 flow [2022-11-21 16:26:25,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=867, PETRI_PLACES=279, PETRI_TRANSITIONS=273} [2022-11-21 16:26:25,353 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 38 predicate places. [2022-11-21 16:26:25,353 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 273 transitions, 867 flow [2022-11-21 16:26:25,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 214.375) internal successors, (1715), 8 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:25,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:25,355 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:26:25,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:26:25,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:25,356 INFO L85 PathProgramCache]: Analyzing trace with hash 279090622, now seen corresponding path program 1 times [2022-11-21 16:26:25,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:25,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605843147] [2022-11-21 16:26:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:25,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:25,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:25,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605843147] [2022-11-21 16:26:25,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605843147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:25,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:25,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:26:25,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810345908] [2022-11-21 16:26:25,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:25,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:26:25,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:25,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:26:25,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:26:25,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-11-21 16:26:25,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 273 transitions, 867 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:25,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:25,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-11-21 16:26:25,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:26:26,350 INFO L130 PetriNetUnfolder]: 590/2965 cut-off events. [2022-11-21 16:26:26,351 INFO L131 PetriNetUnfolder]: For 4027/4038 co-relation queries the response was YES. [2022-11-21 16:26:26,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5806 conditions, 2965 events. 590/2965 cut-off events. For 4027/4038 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 23163 event pairs, 329 based on Foata normal form. 5/2767 useless extension candidates. Maximal degree in co-relation 5784. Up to 575 conditions per place. [2022-11-21 16:26:26,384 INFO L137 encePairwiseOnDemand]: 262/269 looper letters, 102 selfloop transitions, 24 changer transitions 0/326 dead transitions. [2022-11-21 16:26:26,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 326 transitions, 1329 flow [2022-11-21 16:26:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:26:26,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:26:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1148 transitions. [2022-11-21 16:26:26,387 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8535315985130112 [2022-11-21 16:26:26,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1148 transitions. [2022-11-21 16:26:26,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1148 transitions. [2022-11-21 16:26:26,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:26:26,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1148 transitions. [2022-11-21 16:26:26,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 229.6) internal successors, (1148), 5 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:26,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:26,394 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:26,394 INFO L175 Difference]: Start difference. First operand has 279 places, 273 transitions, 867 flow. Second operand 5 states and 1148 transitions. [2022-11-21 16:26:26,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 326 transitions, 1329 flow [2022-11-21 16:26:26,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 326 transitions, 1293 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:26:26,412 INFO L231 Difference]: Finished difference. Result has 280 places, 280 transitions, 966 flow [2022-11-21 16:26:26,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=966, PETRI_PLACES=280, PETRI_TRANSITIONS=280} [2022-11-21 16:26:26,413 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 39 predicate places. [2022-11-21 16:26:26,414 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 280 transitions, 966 flow [2022-11-21 16:26:26,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:26,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:26,415 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:26:26,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:26:26,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:26,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:26,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1456045748, now seen corresponding path program 2 times [2022-11-21 16:26:26,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:26,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843197333] [2022-11-21 16:26:26,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:26,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:26,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:26,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843197333] [2022-11-21 16:26:26,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843197333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:26,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:26,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:26:26,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567452527] [2022-11-21 16:26:26,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:26,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:26:26,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:26,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:26:26,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:26:26,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-11-21 16:26:26,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 280 transitions, 966 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:26,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:26,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-11-21 16:26:26,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:26:27,669 INFO L130 PetriNetUnfolder]: 608/3063 cut-off events. [2022-11-21 16:26:27,670 INFO L131 PetriNetUnfolder]: For 4438/4438 co-relation queries the response was YES. [2022-11-21 16:26:27,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6123 conditions, 3063 events. 608/3063 cut-off events. For 4438/4438 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 24380 event pairs, 260 based on Foata normal form. 8/2849 useless extension candidates. Maximal degree in co-relation 6098. Up to 587 conditions per place. [2022-11-21 16:26:27,694 INFO L137 encePairwiseOnDemand]: 262/269 looper letters, 113 selfloop transitions, 27 changer transitions 0/340 dead transitions. [2022-11-21 16:26:27,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 340 transitions, 1455 flow [2022-11-21 16:26:27,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:26:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:26:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1371 transitions. [2022-11-21 16:26:27,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8494423791821561 [2022-11-21 16:26:27,698 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1371 transitions. [2022-11-21 16:26:27,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1371 transitions. [2022-11-21 16:26:27,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:26:27,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1371 transitions. [2022-11-21 16:26:27,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 228.5) internal successors, (1371), 6 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:27,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:27,706 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:27,706 INFO L175 Difference]: Start difference. First operand has 280 places, 280 transitions, 966 flow. Second operand 6 states and 1371 transitions. [2022-11-21 16:26:27,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 340 transitions, 1455 flow [2022-11-21 16:26:27,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 340 transitions, 1433 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-21 16:26:27,732 INFO L231 Difference]: Finished difference. Result has 286 places, 284 transitions, 1050 flow [2022-11-21 16:26:27,732 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1050, PETRI_PLACES=286, PETRI_TRANSITIONS=284} [2022-11-21 16:26:27,733 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 45 predicate places. [2022-11-21 16:26:27,733 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 284 transitions, 1050 flow [2022-11-21 16:26:27,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:27,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:27,734 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:26:27,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:26:27,735 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:27,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash 632279702, now seen corresponding path program 3 times [2022-11-21 16:26:27,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:27,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979090879] [2022-11-21 16:26:27,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:27,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:28,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:28,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979090879] [2022-11-21 16:26:28,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979090879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:28,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:28,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:26:28,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760084825] [2022-11-21 16:26:28,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:28,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:26:28,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:28,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:26:28,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:26:28,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-11-21 16:26:28,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 284 transitions, 1050 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:28,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:28,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-11-21 16:26:28,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:26:28,733 INFO L130 PetriNetUnfolder]: 616/3069 cut-off events. [2022-11-21 16:26:28,733 INFO L131 PetriNetUnfolder]: For 4832/4842 co-relation queries the response was YES. [2022-11-21 16:26:28,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6182 conditions, 3069 events. 616/3069 cut-off events. For 4832/4842 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 24187 event pairs, 342 based on Foata normal form. 10/2867 useless extension candidates. Maximal degree in co-relation 6155. Up to 947 conditions per place. [2022-11-21 16:26:28,753 INFO L137 encePairwiseOnDemand]: 262/269 looper letters, 81 selfloop transitions, 19 changer transitions 0/300 dead transitions. [2022-11-21 16:26:28,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 300 transitions, 1307 flow [2022-11-21 16:26:28,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:26:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:26:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1124 transitions. [2022-11-21 16:26:28,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8356877323420074 [2022-11-21 16:26:28,761 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1124 transitions. [2022-11-21 16:26:28,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1124 transitions. [2022-11-21 16:26:28,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:26:28,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1124 transitions. [2022-11-21 16:26:28,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 224.8) internal successors, (1124), 5 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:28,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:28,768 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:28,768 INFO L175 Difference]: Start difference. First operand has 286 places, 284 transitions, 1050 flow. Second operand 5 states and 1124 transitions. [2022-11-21 16:26:28,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 300 transitions, 1307 flow [2022-11-21 16:26:28,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 300 transitions, 1264 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:26:28,785 INFO L231 Difference]: Finished difference. Result has 288 places, 283 transitions, 1034 flow [2022-11-21 16:26:28,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1034, PETRI_PLACES=288, PETRI_TRANSITIONS=283} [2022-11-21 16:26:28,789 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 47 predicate places. [2022-11-21 16:26:28,789 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 283 transitions, 1034 flow [2022-11-21 16:26:28,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:28,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:28,790 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:26:28,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:26:28,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:28,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1663086912, now seen corresponding path program 4 times [2022-11-21 16:26:28,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:28,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761471176] [2022-11-21 16:26:28,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:28,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:29,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:29,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761471176] [2022-11-21 16:26:29,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761471176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:29,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:29,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:26:29,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265788320] [2022-11-21 16:26:29,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:29,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:26:29,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:29,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:26:29,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:26:29,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-11-21 16:26:29,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 283 transitions, 1034 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:29,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:29,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-11-21 16:26:29,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:26:29,964 INFO L130 PetriNetUnfolder]: 659/3291 cut-off events. [2022-11-21 16:26:29,964 INFO L131 PetriNetUnfolder]: For 4980/4990 co-relation queries the response was YES. [2022-11-21 16:26:29,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6523 conditions, 3291 events. 659/3291 cut-off events. For 4980/4990 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 26560 event pairs, 348 based on Foata normal form. 16/3078 useless extension candidates. Maximal degree in co-relation 6496. Up to 959 conditions per place. [2022-11-21 16:26:29,994 INFO L137 encePairwiseOnDemand]: 262/269 looper letters, 95 selfloop transitions, 23 changer transitions 0/318 dead transitions. [2022-11-21 16:26:29,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 318 transitions, 1463 flow [2022-11-21 16:26:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:26:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:26:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1345 transitions. [2022-11-21 16:26:29,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-21 16:26:29,998 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1345 transitions. [2022-11-21 16:26:29,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1345 transitions. [2022-11-21 16:26:30,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:26:30,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1345 transitions. [2022-11-21 16:26:30,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.16666666666666) internal successors, (1345), 6 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:30,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:30,008 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:30,008 INFO L175 Difference]: Start difference. First operand has 288 places, 283 transitions, 1034 flow. Second operand 6 states and 1345 transitions. [2022-11-21 16:26:30,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 318 transitions, 1463 flow [2022-11-21 16:26:30,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 318 transitions, 1402 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-21 16:26:30,030 INFO L231 Difference]: Finished difference. Result has 289 places, 289 transitions, 1098 flow [2022-11-21 16:26:30,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1098, PETRI_PLACES=289, PETRI_TRANSITIONS=289} [2022-11-21 16:26:30,032 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 48 predicate places. [2022-11-21 16:26:30,032 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 289 transitions, 1098 flow [2022-11-21 16:26:30,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:30,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:30,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:26:30,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:26:30,034 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:30,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:30,034 INFO L85 PathProgramCache]: Analyzing trace with hash 199986822, now seen corresponding path program 5 times [2022-11-21 16:26:30,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:30,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36704498] [2022-11-21 16:26:30,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:30,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:30,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36704498] [2022-11-21 16:26:30,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36704498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:30,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:30,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:26:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120492919] [2022-11-21 16:26:30,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:30,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:26:30,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:30,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:26:30,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:26:30,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-11-21 16:26:30,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 289 transitions, 1098 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:30,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:30,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-11-21 16:26:30,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:26:31,329 INFO L130 PetriNetUnfolder]: 693/3467 cut-off events. [2022-11-21 16:26:31,330 INFO L131 PetriNetUnfolder]: For 5342/5354 co-relation queries the response was YES. [2022-11-21 16:26:31,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6857 conditions, 3467 events. 693/3467 cut-off events. For 5342/5354 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 28493 event pairs, 395 based on Foata normal form. 18/3239 useless extension candidates. Maximal degree in co-relation 6831. Up to 1023 conditions per place. [2022-11-21 16:26:31,352 INFO L137 encePairwiseOnDemand]: 262/269 looper letters, 98 selfloop transitions, 25 changer transitions 0/323 dead transitions. [2022-11-21 16:26:31,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 323 transitions, 1491 flow [2022-11-21 16:26:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:26:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:26:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1351 transitions. [2022-11-21 16:26:31,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8370508054522925 [2022-11-21 16:26:31,358 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1351 transitions. [2022-11-21 16:26:31,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1351 transitions. [2022-11-21 16:26:31,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:26:31,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1351 transitions. [2022-11-21 16:26:31,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.16666666666666) internal successors, (1351), 6 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:31,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:31,365 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:31,365 INFO L175 Difference]: Start difference. First operand has 289 places, 289 transitions, 1098 flow. Second operand 6 states and 1351 transitions. [2022-11-21 16:26:31,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 323 transitions, 1491 flow [2022-11-21 16:26:31,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 323 transitions, 1464 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:26:31,385 INFO L231 Difference]: Finished difference. Result has 293 places, 292 transitions, 1165 flow [2022-11-21 16:26:31,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1165, PETRI_PLACES=293, PETRI_TRANSITIONS=292} [2022-11-21 16:26:31,387 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 52 predicate places. [2022-11-21 16:26:31,387 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 292 transitions, 1165 flow [2022-11-21 16:26:31,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:31,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:31,388 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:26:31,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:26:31,389 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:31,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:31,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1094274350, now seen corresponding path program 6 times [2022-11-21 16:26:31,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:31,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984846407] [2022-11-21 16:26:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:31,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:31,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:31,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984846407] [2022-11-21 16:26:31,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984846407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:31,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:31,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:26:31,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649974592] [2022-11-21 16:26:31,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:31,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:26:31,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:26:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:26:31,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-11-21 16:26:31,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 292 transitions, 1165 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:31,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:31,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-11-21 16:26:31,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:26:32,478 INFO L130 PetriNetUnfolder]: 685/3471 cut-off events. [2022-11-21 16:26:32,478 INFO L131 PetriNetUnfolder]: For 5310/5319 co-relation queries the response was YES. [2022-11-21 16:26:32,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6821 conditions, 3471 events. 685/3471 cut-off events. For 5310/5319 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 28603 event pairs, 295 based on Foata normal form. 15/3247 useless extension candidates. Maximal degree in co-relation 6794. Up to 669 conditions per place. [2022-11-21 16:26:32,505 INFO L137 encePairwiseOnDemand]: 262/269 looper letters, 104 selfloop transitions, 29 changer transitions 0/333 dead transitions. [2022-11-21 16:26:32,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 333 transitions, 1602 flow [2022-11-21 16:26:32,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:26:32,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:26:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1573 transitions. [2022-11-21 16:26:32,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8353690918746681 [2022-11-21 16:26:32,511 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1573 transitions. [2022-11-21 16:26:32,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1573 transitions. [2022-11-21 16:26:32,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:26:32,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1573 transitions. [2022-11-21 16:26:32,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 224.71428571428572) internal successors, (1573), 7 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:32,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:32,522 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:32,522 INFO L175 Difference]: Start difference. First operand has 293 places, 292 transitions, 1165 flow. Second operand 7 states and 1573 transitions. [2022-11-21 16:26:32,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 333 transitions, 1602 flow [2022-11-21 16:26:32,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 333 transitions, 1532 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-21 16:26:32,549 INFO L231 Difference]: Finished difference. Result has 293 places, 291 transitions, 1130 flow [2022-11-21 16:26:32,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1130, PETRI_PLACES=293, PETRI_TRANSITIONS=291} [2022-11-21 16:26:32,550 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 52 predicate places. [2022-11-21 16:26:32,550 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 291 transitions, 1130 flow [2022-11-21 16:26:32,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:32,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:32,551 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:26:32,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:26:32,552 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:32,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:32,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1134538997, now seen corresponding path program 1 times [2022-11-21 16:26:32,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:32,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265061671] [2022-11-21 16:26:32,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:32,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:33,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:33,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265061671] [2022-11-21 16:26:33,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265061671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:26:33,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525235082] [2022-11-21 16:26:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:33,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:26:33,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:26:33,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:26:33,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:26:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:33,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:26:33,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:26:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:26:33,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:26:33,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525235082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:33,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:26:33,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-21 16:26:33,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934761001] [2022-11-21 16:26:33,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:33,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:26:33,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:33,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:26:33,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:26:33,533 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 269 [2022-11-21 16:26:33,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 291 transitions, 1130 flow. Second operand has 8 states, 8 states have (on average 189.5) internal successors, (1516), 8 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:33,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:33,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 269 [2022-11-21 16:26:33,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:26:34,336 INFO L130 PetriNetUnfolder]: 512/2652 cut-off events. [2022-11-21 16:26:34,337 INFO L131 PetriNetUnfolder]: For 1611/1629 co-relation queries the response was YES. [2022-11-21 16:26:34,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 2652 events. 512/2652 cut-off events. For 1611/1629 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 21532 event pairs, 277 based on Foata normal form. 16/2474 useless extension candidates. Maximal degree in co-relation 4632. Up to 764 conditions per place. [2022-11-21 16:26:34,358 INFO L137 encePairwiseOnDemand]: 247/269 looper letters, 55 selfloop transitions, 15 changer transitions 18/314 dead transitions. [2022-11-21 16:26:34,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 314 transitions, 1358 flow [2022-11-21 16:26:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:26:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:26:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1950 transitions. [2022-11-21 16:26:34,364 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.724907063197026 [2022-11-21 16:26:34,364 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1950 transitions. [2022-11-21 16:26:34,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1950 transitions. [2022-11-21 16:26:34,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:26:34,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1950 transitions. [2022-11-21 16:26:34,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 195.0) internal successors, (1950), 10 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:34,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 269.0) internal successors, (2959), 11 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:34,376 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 269.0) internal successors, (2959), 11 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:34,376 INFO L175 Difference]: Start difference. First operand has 293 places, 291 transitions, 1130 flow. Second operand 10 states and 1950 transitions. [2022-11-21 16:26:34,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 314 transitions, 1358 flow [2022-11-21 16:26:34,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 314 transitions, 1281 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-21 16:26:34,392 INFO L231 Difference]: Finished difference. Result has 300 places, 292 transitions, 1103 flow [2022-11-21 16:26:34,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1103, PETRI_PLACES=300, PETRI_TRANSITIONS=292} [2022-11-21 16:26:34,394 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 59 predicate places. [2022-11-21 16:26:34,394 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 292 transitions, 1103 flow [2022-11-21 16:26:34,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 189.5) internal successors, (1516), 8 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:34,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:26:34,395 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:26:34,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:26:34,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 16:26:34,602 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:26:34,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash -172094287, now seen corresponding path program 1 times [2022-11-21 16:26:34,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:34,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203438394] [2022-11-21 16:26:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:34,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:35,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:26:35,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:35,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203438394] [2022-11-21 16:26:35,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203438394] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:26:35,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794064544] [2022-11-21 16:26:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:35,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:26:35,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:26:35,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:26:35,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:26:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:35,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-21 16:26:35,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:26:36,285 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-21 16:26:36,286 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 19 treesize of output 10 [2022-11-21 16:26:36,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:36,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:26:37,244 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-21 16:26:37,244 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 19 treesize of output 11 [2022-11-21 16:26:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:38,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794064544] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:26:38,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:26:38,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 18] total 36 [2022-11-21 16:26:38,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798082068] [2022-11-21 16:26:38,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:26:38,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-21 16:26:38,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:38,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-21 16:26:38,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1148, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 16:26:38,243 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 269 [2022-11-21 16:26:38,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 292 transitions, 1103 flow. Second operand has 36 states, 36 states have (on average 105.41666666666667) internal successors, (3795), 36 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:26:38,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:26:38,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 269 [2022-11-21 16:26:38,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:27:10,420 INFO L130 PetriNetUnfolder]: 29748/61491 cut-off events. [2022-11-21 16:27:10,420 INFO L131 PetriNetUnfolder]: For 59710/59756 co-relation queries the response was YES. [2022-11-21 16:27:10,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141418 conditions, 61491 events. 29748/61491 cut-off events. For 59710/59756 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 630937 event pairs, 1672 based on Foata normal form. 128/60500 useless extension candidates. Maximal degree in co-relation 141391. Up to 9634 conditions per place. [2022-11-21 16:27:11,098 INFO L137 encePairwiseOnDemand]: 192/269 looper letters, 2427 selfloop transitions, 670 changer transitions 490/3679 dead transitions. [2022-11-21 16:27:11,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 3679 transitions, 19880 flow [2022-11-21 16:27:11,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-11-21 16:27:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2022-11-21 16:27:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 24372 transitions. [2022-11-21 16:27:11,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4253625844285041 [2022-11-21 16:27:11,181 INFO L72 ComplementDD]: Start complementDD. Operand 213 states and 24372 transitions. [2022-11-21 16:27:11,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 213 states and 24372 transitions. [2022-11-21 16:27:11,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:27:11,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 213 states and 24372 transitions. [2022-11-21 16:27:11,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 214 states, 213 states have (on average 114.4225352112676) internal successors, (24372), 213 states have internal predecessors, (24372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:11,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 214 states, 214 states have (on average 269.0) internal successors, (57566), 214 states have internal predecessors, (57566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:11,398 INFO L81 ComplementDD]: Finished complementDD. Result has 214 states, 214 states have (on average 269.0) internal successors, (57566), 214 states have internal predecessors, (57566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:11,398 INFO L175 Difference]: Start difference. First operand has 300 places, 292 transitions, 1103 flow. Second operand 213 states and 24372 transitions. [2022-11-21 16:27:11,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 3679 transitions, 19880 flow [2022-11-21 16:27:13,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 3679 transitions, 18952 flow, removed 324 selfloop flow, removed 7 redundant places. [2022-11-21 16:27:13,104 INFO L231 Difference]: Finished difference. Result has 641 places, 979 transitions, 7099 flow [2022-11-21 16:27:13,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=213, PETRI_FLOW=7099, PETRI_PLACES=641, PETRI_TRANSITIONS=979} [2022-11-21 16:27:13,106 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 400 predicate places. [2022-11-21 16:27:13,106 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 979 transitions, 7099 flow [2022-11-21 16:27:13,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 105.41666666666667) internal successors, (3795), 36 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:13,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:27:13,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:27:13,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:27:13,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 16:27:13,314 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:27:13,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:13,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2069912169, now seen corresponding path program 2 times [2022-11-21 16:27:13,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:27:13,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201964067] [2022-11-21 16:27:13,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:13,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:27:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:27:14,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:27:14,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201964067] [2022-11-21 16:27:14,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201964067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:27:14,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:27:14,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:27:14,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238873795] [2022-11-21 16:27:14,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:27:14,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:27:14,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:27:14,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:27:14,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:27:14,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 269 [2022-11-21 16:27:14,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 979 transitions, 7099 flow. Second operand has 11 states, 11 states have (on average 210.36363636363637) internal successors, (2314), 11 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:14,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:27:14,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 269 [2022-11-21 16:27:14,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:27:21,221 INFO L130 PetriNetUnfolder]: 2969/13153 cut-off events. [2022-11-21 16:27:21,221 INFO L131 PetriNetUnfolder]: For 110518/110740 co-relation queries the response was YES. [2022-11-21 16:27:21,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48420 conditions, 13153 events. 2969/13153 cut-off events. For 110518/110740 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 139110 event pairs, 774 based on Foata normal form. 59/12881 useless extension candidates. Maximal degree in co-relation 48257. Up to 2071 conditions per place. [2022-11-21 16:27:21,435 INFO L137 encePairwiseOnDemand]: 253/269 looper letters, 265 selfloop transitions, 231 changer transitions 0/1158 dead transitions. [2022-11-21 16:27:21,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 1158 transitions, 9162 flow [2022-11-21 16:27:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:27:21,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:27:21,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3278 transitions. [2022-11-21 16:27:21,443 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8123915737298637 [2022-11-21 16:27:21,443 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3278 transitions. [2022-11-21 16:27:21,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3278 transitions. [2022-11-21 16:27:21,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:27:21,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3278 transitions. [2022-11-21 16:27:21,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 218.53333333333333) internal successors, (3278), 15 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:21,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 269.0) internal successors, (4304), 16 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:21,461 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 269.0) internal successors, (4304), 16 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:21,461 INFO L175 Difference]: Start difference. First operand has 641 places, 979 transitions, 7099 flow. Second operand 15 states and 3278 transitions. [2022-11-21 16:27:21,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 1158 transitions, 9162 flow [2022-11-21 16:27:22,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 1158 transitions, 9066 flow, removed 42 selfloop flow, removed 18 redundant places. [2022-11-21 16:27:22,552 INFO L231 Difference]: Finished difference. Result has 584 places, 1014 transitions, 7970 flow [2022-11-21 16:27:22,553 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=7035, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=769, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7970, PETRI_PLACES=584, PETRI_TRANSITIONS=1014} [2022-11-21 16:27:22,554 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 343 predicate places. [2022-11-21 16:27:22,554 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 1014 transitions, 7970 flow [2022-11-21 16:27:22,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 210.36363636363637) internal successors, (2314), 11 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:22,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:27:22,555 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:27:22,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:27:22,555 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:27:22,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2116770693, now seen corresponding path program 3 times [2022-11-21 16:27:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:27:22,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744722325] [2022-11-21 16:27:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:27:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:27:23,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:27:23,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744722325] [2022-11-21 16:27:23,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744722325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:27:23,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055723144] [2022-11-21 16:27:23,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:27:23,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:27:23,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:27:23,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:27:23,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa79d08-69b5-4cb1-ba8b-69e1957dba92/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:27:23,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 16:27:23,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:27:23,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-21 16:27:23,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:27:23,983 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 15 treesize of output 11 [2022-11-21 16:27:24,317 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 [2022-11-21 16:27:24,391 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 [2022-11-21 16:27:24,774 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-21 16:27:24,775 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 19 treesize of output 10 [2022-11-21 16:27:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:24,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:27:25,894 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_194 (Array Int Int))) (or (< ~x2~0 0) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_194) c_~f~0.base))) (= (select .cse0 (+ (* c_~x1~0 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* ~x2~0 4))))) (<= c_~size~0 ~x2~0))) is different from false [2022-11-21 16:27:26,104 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_194 (Array Int Int))) (or (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_194) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (= (select .cse0 (+ (* c_~x1~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (select .cse0 (+ (* ~x2~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (< ~x2~0 0) (<= c_~size~0 ~x2~0))) is different from false [2022-11-21 16:27:26,553 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:27:26,554 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 55 treesize of output 44 [2022-11-21 16:27:26,568 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-21 16:27:26,569 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 198 treesize of output 173 [2022-11-21 16:27:26,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:27:26,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 59 [2022-11-21 16:27:26,596 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-21 16:27:26,596 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 142 treesize of output 94 [2022-11-21 16:27:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:27,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055723144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:27:27,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:27:27,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 24] total 50 [2022-11-21 16:27:27,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633350713] [2022-11-21 16:27:27,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:27:27,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-21 16:27:27,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:27:27,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-21 16:27:27,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2007, Unknown=36, NotChecked=186, Total=2450 [2022-11-21 16:27:27,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 269 [2022-11-21 16:27:27,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 1014 transitions, 7970 flow. Second operand has 50 states, 50 states have (on average 90.12) internal successors, (4506), 50 states have internal predecessors, (4506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:27,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:27:27,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 269 [2022-11-21 16:27:27,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand