./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:46:32,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:46:32,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:46:32,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:46:32,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:46:32,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:46:32,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:46:32,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:46:32,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:46:32,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:46:32,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:46:32,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:46:32,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:46:32,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:46:32,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:46:32,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:46:32,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:46:32,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:46:32,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:46:32,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:46:32,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:46:32,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:46:32,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:46:32,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:46:32,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:46:32,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:46:32,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:46:32,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:46:32,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:46:32,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:46:32,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:46:32,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:46:32,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:46:32,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:46:32,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:46:32,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:46:32,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:46:32,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:46:32,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:46:32,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:46:32,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:46:32,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:46:32,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:46:32,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:46:32,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:46:32,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:46:32,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:46:32,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:46:32,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:46:32,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:46:32,200 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:46:32,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:46:32,201 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:46:32,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:46:32,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:46:32,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:46:32,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:46:32,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:46:32,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:46:32,203 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:46:32,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:46:32,204 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:46:32,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:46:32,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:46:32,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:46:32,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:46:32,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:46:32,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:46:32,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:46:32,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:46:32,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:46:32,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:46:32,207 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:46:32,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:46:32,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:46:32,209 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_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2022-11-18 19:46:32,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:46:32,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:46:32,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:46:32,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:46:32,699 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:46:32,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-18 19:46:32,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/data/448da698b/1932f838c629482ba9926228b31ca648/FLAGa3b37a14d [2022-11-18 19:46:33,462 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:46:33,463 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-18 19:46:33,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/data/448da698b/1932f838c629482ba9926228b31ca648/FLAGa3b37a14d [2022-11-18 19:46:33,730 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/data/448da698b/1932f838c629482ba9926228b31ca648 [2022-11-18 19:46:33,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:46:33,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:46:33,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:46:33,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:46:33,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:46:33,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:46:33" (1/1) ... [2022-11-18 19:46:33,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b64038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:33, skipping insertion in model container [2022-11-18 19:46:33,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:46:33" (1/1) ... [2022-11-18 19:46:33,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:46:33,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:46:34,209 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-18 19:46:34,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:46:34,228 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:46:34,293 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-18 19:46:34,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:46:34,344 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:46:34,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34 WrapperNode [2022-11-18 19:46:34,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:46:34,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:46:34,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:46:34,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:46:34,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34" (1/1) ... [2022-11-18 19:46:34,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34" (1/1) ... [2022-11-18 19:46:34,416 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-18 19:46:34,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:46:34,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:46:34,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:46:34,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:46:34,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34" (1/1) ... [2022-11-18 19:46:34,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34" (1/1) ... [2022-11-18 19:46:34,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34" (1/1) ... [2022-11-18 19:46:34,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34" (1/1) ... [2022-11-18 19:46:34,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34" (1/1) ... [2022-11-18 19:46:34,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34" (1/1) ... [2022-11-18 19:46:34,462 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34" (1/1) ... [2022-11-18 19:46:34,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34" (1/1) ... [2022-11-18 19:46:34,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:46:34,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:46:34,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:46:34,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:46:34,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34" (1/1) ... [2022-11-18 19:46:34,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:46:34,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:34,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:46:34,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:46:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 19:46:34,564 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 19:46:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 19:46:34,565 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 19:46:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:46:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:46:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:46:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:46:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:46:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:46:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:46:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:46:34,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:46:34,568 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:46:34,699 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:46:34,701 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:46:34,857 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:46:34,863 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:46:34,864 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:46:34,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:46:34 BoogieIcfgContainer [2022-11-18 19:46:34,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:46:34,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:46:34,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:46:34,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:46:34,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:46:33" (1/3) ... [2022-11-18 19:46:34,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6018c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:46:34, skipping insertion in model container [2022-11-18 19:46:34,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:34" (2/3) ... [2022-11-18 19:46:34,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6018c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:46:34, skipping insertion in model container [2022-11-18 19:46:34,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:46:34" (3/3) ... [2022-11-18 19:46:34,877 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2022-11-18 19:46:34,886 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:46:34,897 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:46:34,897 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:46:34,898 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:46:35,020 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:46:35,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 150 flow [2022-11-18 19:46:35,149 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-11-18 19:46:35,150 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:46:35,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-18 19:46:35,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 70 transitions, 150 flow [2022-11-18 19:46:35,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 142 flow [2022-11-18 19:46:35,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:46:35,190 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;@c08e11f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:46:35,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 19:46:35,212 INFO L130 PetriNetUnfolder]: 4/57 cut-off events. [2022-11-18 19:46:35,213 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:46:35,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:35,214 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] [2022-11-18 19:46:35,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:35,221 INFO L85 PathProgramCache]: Analyzing trace with hash 398220865, now seen corresponding path program 1 times [2022-11-18 19:46:35,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:35,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321680238] [2022-11-18 19:46:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:35,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:36,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:36,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321680238] [2022-11-18 19:46:36,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321680238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:36,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:36,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:46:36,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267150259] [2022-11-18 19:46:36,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:36,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:36,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:36,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:36,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:36,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:36,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:36,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:36,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:36,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:36,447 INFO L130 PetriNetUnfolder]: 42/203 cut-off events. [2022-11-18 19:46:36,448 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:46:36,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 203 events. 42/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 766 event pairs, 3 based on Foata normal form. 45/231 useless extension candidates. Maximal degree in co-relation 250. Up to 28 conditions per place. [2022-11-18 19:46:36,453 INFO L137 encePairwiseOnDemand]: 59/70 looper letters, 22 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2022-11-18 19:46:36,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 271 flow [2022-11-18 19:46:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:46:36,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:46:36,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 613 transitions. [2022-11-18 19:46:36,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8757142857142857 [2022-11-18 19:46:36,472 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 613 transitions. [2022-11-18 19:46:36,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 613 transitions. [2022-11-18 19:46:36,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:36,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 613 transitions. [2022-11-18 19:46:36,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.3) internal successors, (613), 10 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:36,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:36,494 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:36,496 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 142 flow. Second operand 10 states and 613 transitions. [2022-11-18 19:46:36,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 271 flow [2022-11-18 19:46:36,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:46:36,519 INFO L231 Difference]: Finished difference. Result has 85 places, 85 transitions, 276 flow [2022-11-18 19:46:36,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=276, PETRI_PLACES=85, PETRI_TRANSITIONS=85} [2022-11-18 19:46:36,528 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2022-11-18 19:46:36,528 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 85 transitions, 276 flow [2022-11-18 19:46:36,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:36,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:36,529 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] [2022-11-18 19:46:36,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:46:36,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:36,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:36,531 INFO L85 PathProgramCache]: Analyzing trace with hash 245149124, now seen corresponding path program 1 times [2022-11-18 19:46:36,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:36,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859833810] [2022-11-18 19:46:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:36,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:36,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:36,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859833810] [2022-11-18 19:46:36,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859833810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:36,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:36,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:46:36,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3748368] [2022-11-18 19:46:36,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:36,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:36,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:36,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:36,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:36,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:36,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 85 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:36,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:36,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:36,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:37,122 INFO L130 PetriNetUnfolder]: 46/218 cut-off events. [2022-11-18 19:46:37,122 INFO L131 PetriNetUnfolder]: For 115/120 co-relation queries the response was YES. [2022-11-18 19:46:37,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 218 events. 46/218 cut-off events. For 115/120 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 852 event pairs, 0 based on Foata normal form. 3/205 useless extension candidates. Maximal degree in co-relation 377. Up to 35 conditions per place. [2022-11-18 19:46:37,126 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 16 selfloop transitions, 9 changer transitions 40/110 dead transitions. [2022-11-18 19:46:37,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 110 transitions, 508 flow [2022-11-18 19:46:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 475 transitions. [2022-11-18 19:46:37,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8482142857142857 [2022-11-18 19:46:37,129 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 475 transitions. [2022-11-18 19:46:37,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 475 transitions. [2022-11-18 19:46:37,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:37,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 475 transitions. [2022-11-18 19:46:37,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.375) internal successors, (475), 8 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:37,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:37,136 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:37,136 INFO L175 Difference]: Start difference. First operand has 85 places, 85 transitions, 276 flow. Second operand 8 states and 475 transitions. [2022-11-18 19:46:37,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 110 transitions, 508 flow [2022-11-18 19:46:37,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 110 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:46:37,143 INFO L231 Difference]: Finished difference. Result has 96 places, 67 transitions, 237 flow [2022-11-18 19:46:37,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=237, PETRI_PLACES=96, PETRI_TRANSITIONS=67} [2022-11-18 19:46:37,145 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2022-11-18 19:46:37,145 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 67 transitions, 237 flow [2022-11-18 19:46:37,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:37,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:37,146 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] [2022-11-18 19:46:37,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:46:37,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:37,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:37,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1444168350, now seen corresponding path program 1 times [2022-11-18 19:46:37,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:37,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169428096] [2022-11-18 19:46:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:37,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:37,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:37,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169428096] [2022-11-18 19:46:37,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169428096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:37,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:37,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:46:37,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492744980] [2022-11-18 19:46:37,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:37,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:37,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:37,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:37,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:37,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:37,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 67 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:37,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:37,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:37,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:37,469 INFO L130 PetriNetUnfolder]: 37/195 cut-off events. [2022-11-18 19:46:37,469 INFO L131 PetriNetUnfolder]: For 255/264 co-relation queries the response was YES. [2022-11-18 19:46:37,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 195 events. 37/195 cut-off events. For 255/264 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 642 event pairs, 0 based on Foata normal form. 12/188 useless extension candidates. Maximal degree in co-relation 361. Up to 35 conditions per place. [2022-11-18 19:46:37,475 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 23 selfloop transitions, 11 changer transitions 8/87 dead transitions. [2022-11-18 19:46:37,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 457 flow [2022-11-18 19:46:37,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:46:37,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:46:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 530 transitions. [2022-11-18 19:46:37,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8412698412698413 [2022-11-18 19:46:37,479 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 530 transitions. [2022-11-18 19:46:37,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 530 transitions. [2022-11-18 19:46:37,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:37,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 530 transitions. [2022-11-18 19:46:37,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.888888888888886) internal successors, (530), 9 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:37,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:37,488 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:37,488 INFO L175 Difference]: Start difference. First operand has 96 places, 67 transitions, 237 flow. Second operand 9 states and 530 transitions. [2022-11-18 19:46:37,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 457 flow [2022-11-18 19:46:37,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 387 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-11-18 19:46:37,503 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 289 flow [2022-11-18 19:46:37,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=289, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2022-11-18 19:46:37,506 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2022-11-18 19:46:37,506 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 289 flow [2022-11-18 19:46:37,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:37,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:37,507 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] [2022-11-18 19:46:37,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:46:37,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:37,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:37,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1245653052, now seen corresponding path program 2 times [2022-11-18 19:46:37,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:37,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188235839] [2022-11-18 19:46:37,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:37,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:37,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188235839] [2022-11-18 19:46:37,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188235839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:37,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:37,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:46:37,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024418101] [2022-11-18 19:46:37,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:37,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:37,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:37,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:37,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:37,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:37,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:37,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:38,002 INFO L130 PetriNetUnfolder]: 34/212 cut-off events. [2022-11-18 19:46:38,002 INFO L131 PetriNetUnfolder]: For 292/326 co-relation queries the response was YES. [2022-11-18 19:46:38,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 212 events. 34/212 cut-off events. For 292/326 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 802 event pairs, 0 based on Foata normal form. 25/216 useless extension candidates. Maximal degree in co-relation 425. Up to 37 conditions per place. [2022-11-18 19:46:38,006 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 21 selfloop transitions, 15 changer transitions 11/92 dead transitions. [2022-11-18 19:46:38,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 92 transitions, 536 flow [2022-11-18 19:46:38,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:46:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:46:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 585 transitions. [2022-11-18 19:46:38,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8357142857142857 [2022-11-18 19:46:38,009 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 585 transitions. [2022-11-18 19:46:38,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 585 transitions. [2022-11-18 19:46:38,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:38,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 585 transitions. [2022-11-18 19:46:38,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.5) internal successors, (585), 10 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,021 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,022 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 289 flow. Second operand 10 states and 585 transitions. [2022-11-18 19:46:38,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 92 transitions, 536 flow [2022-11-18 19:46:38,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 511 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:38,029 INFO L231 Difference]: Finished difference. Result has 95 places, 77 transitions, 370 flow [2022-11-18 19:46:38,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=370, PETRI_PLACES=95, PETRI_TRANSITIONS=77} [2022-11-18 19:46:38,031 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 25 predicate places. [2022-11-18 19:46:38,031 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 77 transitions, 370 flow [2022-11-18 19:46:38,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,038 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:38,038 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] [2022-11-18 19:46:38,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:46:38,039 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:38,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:38,040 INFO L85 PathProgramCache]: Analyzing trace with hash -150168411, now seen corresponding path program 1 times [2022-11-18 19:46:38,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:38,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114391816] [2022-11-18 19:46:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:38,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:38,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:38,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114391816] [2022-11-18 19:46:38,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114391816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:38,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:38,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:46:38,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477881265] [2022-11-18 19:46:38,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:38,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:46:38,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:38,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:46:38,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:46:38,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:38,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 77 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:38,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:38,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:38,461 INFO L130 PetriNetUnfolder]: 47/262 cut-off events. [2022-11-18 19:46:38,461 INFO L131 PetriNetUnfolder]: For 527/548 co-relation queries the response was YES. [2022-11-18 19:46:38,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 262 events. 47/262 cut-off events. For 527/548 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1077 event pairs, 1 based on Foata normal form. 19/256 useless extension candidates. Maximal degree in co-relation 575. Up to 55 conditions per place. [2022-11-18 19:46:38,464 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 25 selfloop transitions, 23 changer transitions 8/101 dead transitions. [2022-11-18 19:46:38,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 101 transitions, 694 flow [2022-11-18 19:46:38,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:46:38,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:46:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 644 transitions. [2022-11-18 19:46:38,468 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8363636363636363 [2022-11-18 19:46:38,468 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 644 transitions. [2022-11-18 19:46:38,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 644 transitions. [2022-11-18 19:46:38,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:38,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 644 transitions. [2022-11-18 19:46:38,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.54545454545455) internal successors, (644), 11 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,474 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,474 INFO L175 Difference]: Start difference. First operand has 95 places, 77 transitions, 370 flow. Second operand 11 states and 644 transitions. [2022-11-18 19:46:38,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 101 transitions, 694 flow [2022-11-18 19:46:38,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 647 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-18 19:46:38,481 INFO L231 Difference]: Finished difference. Result has 104 places, 83 transitions, 485 flow [2022-11-18 19:46:38,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=485, PETRI_PLACES=104, PETRI_TRANSITIONS=83} [2022-11-18 19:46:38,485 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 34 predicate places. [2022-11-18 19:46:38,485 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 83 transitions, 485 flow [2022-11-18 19:46:38,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:38,486 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] [2022-11-18 19:46:38,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:46:38,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:38,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:38,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1283973881, now seen corresponding path program 2 times [2022-11-18 19:46:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:38,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056745523] [2022-11-18 19:46:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:38,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:38,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:38,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056745523] [2022-11-18 19:46:38,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056745523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:38,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:38,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:46:38,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107890561] [2022-11-18 19:46:38,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:38,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:46:38,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:38,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:46:38,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:46:38,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:38,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 83 transitions, 485 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:38,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:38,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:38,934 INFO L130 PetriNetUnfolder]: 42/254 cut-off events. [2022-11-18 19:46:38,935 INFO L131 PetriNetUnfolder]: For 1019/1059 co-relation queries the response was YES. [2022-11-18 19:46:38,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 254 events. 42/254 cut-off events. For 1019/1059 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1037 event pairs, 1 based on Foata normal form. 24/253 useless extension candidates. Maximal degree in co-relation 684. Up to 51 conditions per place. [2022-11-18 19:46:38,940 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 21 selfloop transitions, 27 changer transitions 11/104 dead transitions. [2022-11-18 19:46:38,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 104 transitions, 903 flow [2022-11-18 19:46:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:46:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 19:46:38,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 696 transitions. [2022-11-18 19:46:38,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-11-18 19:46:38,944 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 696 transitions. [2022-11-18 19:46:38,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 696 transitions. [2022-11-18 19:46:38,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:38,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 696 transitions. [2022-11-18 19:46:38,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 58.0) internal successors, (696), 12 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,955 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,955 INFO L175 Difference]: Start difference. First operand has 104 places, 83 transitions, 485 flow. Second operand 12 states and 696 transitions. [2022-11-18 19:46:38,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 104 transitions, 903 flow [2022-11-18 19:46:38,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 104 transitions, 838 flow, removed 23 selfloop flow, removed 5 redundant places. [2022-11-18 19:46:38,965 INFO L231 Difference]: Finished difference. Result has 113 places, 86 transitions, 590 flow [2022-11-18 19:46:38,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=590, PETRI_PLACES=113, PETRI_TRANSITIONS=86} [2022-11-18 19:46:38,971 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 43 predicate places. [2022-11-18 19:46:38,971 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 86 transitions, 590 flow [2022-11-18 19:46:38,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:38,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:38,972 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:38,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:46:38,973 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:38,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1873617744, now seen corresponding path program 1 times [2022-11-18 19:46:38,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:38,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020870659] [2022-11-18 19:46:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:38,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:39,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:39,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020870659] [2022-11-18 19:46:39,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020870659] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:39,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262147494] [2022-11-18 19:46:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:39,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:39,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:39,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:39,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:46:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:46:39,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:39,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:39,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262147494] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:39,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:39,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-11-18 19:46:39,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522865858] [2022-11-18 19:46:39,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:39,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:46:39,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:39,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:46:39,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:46:39,906 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:39,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 86 transitions, 590 flow. Second operand has 13 states, 13 states have (on average 56.69230769230769) internal successors, (737), 13 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:39,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:39,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:39,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:40,305 INFO L130 PetriNetUnfolder]: 54/338 cut-off events. [2022-11-18 19:46:40,306 INFO L131 PetriNetUnfolder]: For 1918/1957 co-relation queries the response was YES. [2022-11-18 19:46:40,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 338 events. 54/338 cut-off events. For 1918/1957 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1318 event pairs, 0 based on Foata normal form. 21/326 useless extension candidates. Maximal degree in co-relation 1000. Up to 67 conditions per place. [2022-11-18 19:46:40,311 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 37 selfloop transitions, 19 changer transitions 20/121 dead transitions. [2022-11-18 19:46:40,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 121 transitions, 1338 flow [2022-11-18 19:46:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:46:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 19:46:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1104 transitions. [2022-11-18 19:46:40,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8300751879699249 [2022-11-18 19:46:40,316 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1104 transitions. [2022-11-18 19:46:40,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1104 transitions. [2022-11-18 19:46:40,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:40,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1104 transitions. [2022-11-18 19:46:40,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 58.10526315789474) internal successors, (1104), 19 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:40,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 70.0) internal successors, (1400), 20 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:40,326 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 70.0) internal successors, (1400), 20 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:40,326 INFO L175 Difference]: Start difference. First operand has 113 places, 86 transitions, 590 flow. Second operand 19 states and 1104 transitions. [2022-11-18 19:46:40,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 121 transitions, 1338 flow [2022-11-18 19:46:40,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 121 transitions, 1210 flow, removed 41 selfloop flow, removed 11 redundant places. [2022-11-18 19:46:40,345 INFO L231 Difference]: Finished difference. Result has 130 places, 92 transitions, 709 flow [2022-11-18 19:46:40,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=709, PETRI_PLACES=130, PETRI_TRANSITIONS=92} [2022-11-18 19:46:40,346 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 60 predicate places. [2022-11-18 19:46:40,346 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 92 transitions, 709 flow [2022-11-18 19:46:40,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 56.69230769230769) internal successors, (737), 13 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:40,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:40,347 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:40,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:40,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 19:46:40,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:40,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:40,556 INFO L85 PathProgramCache]: Analyzing trace with hash 848332772, now seen corresponding path program 2 times [2022-11-18 19:46:40,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:40,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476209256] [2022-11-18 19:46:40,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:40,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:40,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476209256] [2022-11-18 19:46:40,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476209256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:40,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926330692] [2022-11-18 19:46:40,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:46:40,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:40,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:40,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:40,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:46:40,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:46:40,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:40,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:46:40,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:41,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:41,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926330692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:41,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:41,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-11-18 19:46:41,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156957901] [2022-11-18 19:46:41,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:41,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:46:41,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:46:41,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:46:41,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:41,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 92 transitions, 709 flow. Second operand has 14 states, 14 states have (on average 56.714285714285715) internal successors, (794), 14 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:41,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:41,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:41,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:42,019 INFO L130 PetriNetUnfolder]: 71/432 cut-off events. [2022-11-18 19:46:42,019 INFO L131 PetriNetUnfolder]: For 6301/6377 co-relation queries the response was YES. [2022-11-18 19:46:42,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1784 conditions, 432 events. 71/432 cut-off events. For 6301/6377 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2146 event pairs, 0 based on Foata normal form. 24/413 useless extension candidates. Maximal degree in co-relation 1713. Up to 95 conditions per place. [2022-11-18 19:46:42,026 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 32 selfloop transitions, 44 changer transitions 23/144 dead transitions. [2022-11-18 19:46:42,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 144 transitions, 2218 flow [2022-11-18 19:46:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:46:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-18 19:46:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1564 transitions. [2022-11-18 19:46:42,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8275132275132275 [2022-11-18 19:46:42,033 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1564 transitions. [2022-11-18 19:46:42,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1564 transitions. [2022-11-18 19:46:42,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:42,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1564 transitions. [2022-11-18 19:46:42,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 57.925925925925924) internal successors, (1564), 27 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:42,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 70.0) internal successors, (1960), 28 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:42,045 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 70.0) internal successors, (1960), 28 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:42,046 INFO L175 Difference]: Start difference. First operand has 130 places, 92 transitions, 709 flow. Second operand 27 states and 1564 transitions. [2022-11-18 19:46:42,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 144 transitions, 2218 flow [2022-11-18 19:46:42,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 144 transitions, 1781 flow, removed 206 selfloop flow, removed 12 redundant places. [2022-11-18 19:46:42,069 INFO L231 Difference]: Finished difference. Result has 155 places, 109 transitions, 1090 flow [2022-11-18 19:46:42,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1090, PETRI_PLACES=155, PETRI_TRANSITIONS=109} [2022-11-18 19:46:42,070 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 85 predicate places. [2022-11-18 19:46:42,070 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 109 transitions, 1090 flow [2022-11-18 19:46:42,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 56.714285714285715) internal successors, (794), 14 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:42,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:42,071 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:42,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:46:42,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:42,277 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:42,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:42,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2100588598, now seen corresponding path program 1 times [2022-11-18 19:46:42,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:42,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745638056] [2022-11-18 19:46:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:42,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:42,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:42,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745638056] [2022-11-18 19:46:42,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745638056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:42,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453898174] [2022-11-18 19:46:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:42,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:42,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:42,490 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:42,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:46:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:42,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:46:42,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:42,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:43,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453898174] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:43,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:43,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-18 19:46:43,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728538567] [2022-11-18 19:46:43,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:43,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:46:43,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:43,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:46:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:46:43,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:43,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 109 transitions, 1090 flow. Second operand has 15 states, 15 states have (on average 56.53333333333333) internal successors, (848), 15 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:43,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:43,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:43,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:43,615 INFO L130 PetriNetUnfolder]: 100/637 cut-off events. [2022-11-18 19:46:43,616 INFO L131 PetriNetUnfolder]: For 17036/17124 co-relation queries the response was YES. [2022-11-18 19:46:43,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3241 conditions, 637 events. 100/637 cut-off events. For 17036/17124 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3791 event pairs, 1 based on Foata normal form. 27/600 useless extension candidates. Maximal degree in co-relation 3158. Up to 141 conditions per place. [2022-11-18 19:46:43,628 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 42 selfloop transitions, 60 changer transitions 20/167 dead transitions. [2022-11-18 19:46:43,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 167 transitions, 3349 flow [2022-11-18 19:46:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:46:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 19:46:43,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1509 transitions. [2022-11-18 19:46:43,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8291208791208792 [2022-11-18 19:46:43,633 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1509 transitions. [2022-11-18 19:46:43,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1509 transitions. [2022-11-18 19:46:43,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:43,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1509 transitions. [2022-11-18 19:46:43,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 58.03846153846154) internal successors, (1509), 26 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:43,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 70.0) internal successors, (1890), 27 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:43,649 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 70.0) internal successors, (1890), 27 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:43,649 INFO L175 Difference]: Start difference. First operand has 155 places, 109 transitions, 1090 flow. Second operand 26 states and 1509 transitions. [2022-11-18 19:46:43,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 167 transitions, 3349 flow [2022-11-18 19:46:43,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 167 transitions, 2740 flow, removed 294 selfloop flow, removed 13 redundant places. [2022-11-18 19:46:43,697 INFO L231 Difference]: Finished difference. Result has 174 places, 125 transitions, 1495 flow [2022-11-18 19:46:43,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1495, PETRI_PLACES=174, PETRI_TRANSITIONS=125} [2022-11-18 19:46:43,698 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 104 predicate places. [2022-11-18 19:46:43,699 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 125 transitions, 1495 flow [2022-11-18 19:46:43,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 56.53333333333333) internal successors, (848), 15 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:43,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:43,700 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:43,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:43,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:43,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:43,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:43,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1168458518, now seen corresponding path program 2 times [2022-11-18 19:46:43,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:43,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881243510] [2022-11-18 19:46:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:43,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:44,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:44,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881243510] [2022-11-18 19:46:44,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881243510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:44,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011548132] [2022-11-18 19:46:44,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:46:44,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:44,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:44,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:44,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:46:44,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:46:44,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:44,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:46:44,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:44,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:44,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011548132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:44,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:44,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-11-18 19:46:44,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852540296] [2022-11-18 19:46:44,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:44,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:46:44,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:44,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:46:44,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:46:44,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:44,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 125 transitions, 1495 flow. Second operand has 16 states, 16 states have (on average 56.5) internal successors, (904), 16 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:44,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:44,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:44,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:45,451 INFO L130 PetriNetUnfolder]: 107/681 cut-off events. [2022-11-18 19:46:45,452 INFO L131 PetriNetUnfolder]: For 27033/27209 co-relation queries the response was YES. [2022-11-18 19:46:45,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3928 conditions, 681 events. 107/681 cut-off events. For 27033/27209 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4073 event pairs, 1 based on Foata normal form. 36/649 useless extension candidates. Maximal degree in co-relation 3838. Up to 153 conditions per place. [2022-11-18 19:46:45,465 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 36 selfloop transitions, 82 changer transitions 25/188 dead transitions. [2022-11-18 19:46:45,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 188 transitions, 4419 flow [2022-11-18 19:46:45,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:46:45,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-18 19:46:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1564 transitions. [2022-11-18 19:46:45,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8275132275132275 [2022-11-18 19:46:45,470 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1564 transitions. [2022-11-18 19:46:45,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1564 transitions. [2022-11-18 19:46:45,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:45,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1564 transitions. [2022-11-18 19:46:45,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 57.925925925925924) internal successors, (1564), 27 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:45,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 70.0) internal successors, (1960), 28 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:45,489 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 70.0) internal successors, (1960), 28 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:45,490 INFO L175 Difference]: Start difference. First operand has 174 places, 125 transitions, 1495 flow. Second operand 27 states and 1564 transitions. [2022-11-18 19:46:45,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 188 transitions, 4419 flow [2022-11-18 19:46:45,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 188 transitions, 3258 flow, removed 540 selfloop flow, removed 22 redundant places. [2022-11-18 19:46:45,563 INFO L231 Difference]: Finished difference. Result has 188 places, 144 transitions, 1930 flow [2022-11-18 19:46:45,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1930, PETRI_PLACES=188, PETRI_TRANSITIONS=144} [2022-11-18 19:46:45,565 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 118 predicate places. [2022-11-18 19:46:45,565 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 144 transitions, 1930 flow [2022-11-18 19:46:45,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 56.5) internal successors, (904), 16 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:45,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:45,566 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:45,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 19:46:45,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:46:45,773 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash 378733446, now seen corresponding path program 3 times [2022-11-18 19:46:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:45,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886794172] [2022-11-18 19:46:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:45,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:46,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:46,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886794172] [2022-11-18 19:46:46,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886794172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:46,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420194871] [2022-11-18 19:46:46,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:46:46,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:46,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:46,100 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:46,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:46:46,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:46:46,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:46,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:46:46,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:46,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:46,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420194871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:46,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:46,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-11-18 19:46:46,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375063208] [2022-11-18 19:46:46,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:46,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:46:46,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:46:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:46:46,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:46,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 144 transitions, 1930 flow. Second operand has 23 states, 23 states have (on average 56.391304347826086) internal successors, (1297), 23 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:46,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:46,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:46,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:48,311 INFO L130 PetriNetUnfolder]: 146/906 cut-off events. [2022-11-18 19:46:48,311 INFO L131 PetriNetUnfolder]: For 35282/35451 co-relation queries the response was YES. [2022-11-18 19:46:48,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5349 conditions, 906 events. 146/906 cut-off events. For 35282/35451 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5304 event pairs, 0 based on Foata normal form. 34/849 useless extension candidates. Maximal degree in co-relation 5254. Up to 197 conditions per place. [2022-11-18 19:46:48,331 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 48 selfloop transitions, 121 changer transitions 29/243 dead transitions. [2022-11-18 19:46:48,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 243 transitions, 6528 flow [2022-11-18 19:46:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 19:46:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-18 19:46:48,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2720 transitions. [2022-11-18 19:46:48,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8267477203647416 [2022-11-18 19:46:48,338 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2720 transitions. [2022-11-18 19:46:48,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2720 transitions. [2022-11-18 19:46:48,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:48,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2720 transitions. [2022-11-18 19:46:48,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 57.87234042553192) internal successors, (2720), 47 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:48,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 70.0) internal successors, (3360), 48 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:48,357 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 70.0) internal successors, (3360), 48 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:48,358 INFO L175 Difference]: Start difference. First operand has 188 places, 144 transitions, 1930 flow. Second operand 47 states and 2720 transitions. [2022-11-18 19:46:48,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 243 transitions, 6528 flow [2022-11-18 19:46:48,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 243 transitions, 5535 flow, removed 461 selfloop flow, removed 20 redundant places. [2022-11-18 19:46:48,463 INFO L231 Difference]: Finished difference. Result has 235 places, 181 transitions, 3021 flow [2022-11-18 19:46:48,463 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3021, PETRI_PLACES=235, PETRI_TRANSITIONS=181} [2022-11-18 19:46:48,464 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 165 predicate places. [2022-11-18 19:46:48,464 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 181 transitions, 3021 flow [2022-11-18 19:46:48,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 56.391304347826086) internal successors, (1297), 23 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:48,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:48,466 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:48,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:48,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:48,673 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:48,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:48,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2051532277, now seen corresponding path program 4 times [2022-11-18 19:46:48,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:48,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960453419] [2022-11-18 19:46:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:48,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:49,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:49,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960453419] [2022-11-18 19:46:49,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960453419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:49,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111325818] [2022-11-18 19:46:49,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:46:49,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:49,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:49,385 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:49,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:46:49,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:46:49,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:49,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:46:49,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:49,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:50,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111325818] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:50,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:50,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 35 [2022-11-18 19:46:50,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078581846] [2022-11-18 19:46:50,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:50,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:46:50,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:50,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:46:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:46:50,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:50,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 181 transitions, 3021 flow. Second operand has 35 states, 35 states have (on average 56.2) internal successors, (1967), 35 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:50,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:50,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:50,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:52,718 INFO L130 PetriNetUnfolder]: 204/1385 cut-off events. [2022-11-18 19:46:52,718 INFO L131 PetriNetUnfolder]: For 110190/110394 co-relation queries the response was YES. [2022-11-18 19:46:52,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10292 conditions, 1385 events. 204/1385 cut-off events. For 110190/110394 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 8378 event pairs, 1 based on Foata normal form. 39/1276 useless extension candidates. Maximal degree in co-relation 10180. Up to 299 conditions per place. [2022-11-18 19:46:52,750 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 106 selfloop transitions, 110 changer transitions 50/311 dead transitions. [2022-11-18 19:46:52,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 311 transitions, 11632 flow [2022-11-18 19:46:52,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 19:46:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-18 19:46:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 3233 transitions. [2022-11-18 19:46:52,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8247448979591837 [2022-11-18 19:46:52,768 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 3233 transitions. [2022-11-18 19:46:52,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 3233 transitions. [2022-11-18 19:46:52,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:52,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 3233 transitions. [2022-11-18 19:46:52,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 57.732142857142854) internal successors, (3233), 56 states have internal predecessors, (3233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:52,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 70.0) internal successors, (3990), 57 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:52,807 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 70.0) internal successors, (3990), 57 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:52,816 INFO L175 Difference]: Start difference. First operand has 235 places, 181 transitions, 3021 flow. Second operand 56 states and 3233 transitions. [2022-11-18 19:46:52,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 311 transitions, 11632 flow [2022-11-18 19:46:53,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 311 transitions, 9248 flow, removed 1160 selfloop flow, removed 24 redundant places. [2022-11-18 19:46:53,146 INFO L231 Difference]: Finished difference. Result has 289 places, 225 transitions, 4218 flow [2022-11-18 19:46:53,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2303, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=4218, PETRI_PLACES=289, PETRI_TRANSITIONS=225} [2022-11-18 19:46:53,148 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 219 predicate places. [2022-11-18 19:46:53,149 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 225 transitions, 4218 flow [2022-11-18 19:46:53,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 56.2) internal successors, (1967), 35 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:53,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:53,151 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:53,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:53,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:53,358 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:53,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1851095147, now seen corresponding path program 5 times [2022-11-18 19:46:53,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:53,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501048703] [2022-11-18 19:46:53,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:53,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:53,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:53,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501048703] [2022-11-18 19:46:53,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501048703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:53,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739861516] [2022-11-18 19:46:53,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:46:53,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:53,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:53,924 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:53,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:46:54,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-18 19:46:54,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:54,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:46:54,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:54,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:55,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739861516] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:55,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:55,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 35 [2022-11-18 19:46:55,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102023463] [2022-11-18 19:46:55,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:55,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:46:55,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:55,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:46:55,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:46:55,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:46:55,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 225 transitions, 4218 flow. Second operand has 35 states, 35 states have (on average 56.2) internal successors, (1967), 35 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:55,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:55,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:46:55,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:57,769 INFO L130 PetriNetUnfolder]: 264/1858 cut-off events. [2022-11-18 19:46:57,770 INFO L131 PetriNetUnfolder]: For 244901/245222 co-relation queries the response was YES. [2022-11-18 19:46:57,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15935 conditions, 1858 events. 264/1858 cut-off events. For 244901/245222 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 12409 event pairs, 1 based on Foata normal form. 41/1703 useless extension candidates. Maximal degree in co-relation 15804. Up to 411 conditions per place. [2022-11-18 19:46:57,821 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 76 selfloop transitions, 210 changer transitions 50/381 dead transitions. [2022-11-18 19:46:57,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 381 transitions, 15902 flow [2022-11-18 19:46:57,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-18 19:46:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-11-18 19:46:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3697 transitions. [2022-11-18 19:46:57,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8252232142857143 [2022-11-18 19:46:57,835 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 3697 transitions. [2022-11-18 19:46:57,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 3697 transitions. [2022-11-18 19:46:57,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:57,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 3697 transitions. [2022-11-18 19:46:57,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 57.765625) internal successors, (3697), 64 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:57,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 70.0) internal successors, (4550), 65 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:57,862 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 70.0) internal successors, (4550), 65 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:57,862 INFO L175 Difference]: Start difference. First operand has 289 places, 225 transitions, 4218 flow. Second operand 64 states and 3697 transitions. [2022-11-18 19:46:57,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 381 transitions, 15902 flow [2022-11-18 19:46:58,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 381 transitions, 13371 flow, removed 1227 selfloop flow, removed 30 redundant places. [2022-11-18 19:46:58,562 INFO L231 Difference]: Finished difference. Result has 344 places, 287 transitions, 6292 flow [2022-11-18 19:46:58,563 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=3367, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=6292, PETRI_PLACES=344, PETRI_TRANSITIONS=287} [2022-11-18 19:46:58,563 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 274 predicate places. [2022-11-18 19:46:58,563 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 287 transitions, 6292 flow [2022-11-18 19:46:58,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 56.2) internal successors, (1967), 35 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:58,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:58,565 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:58,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:58,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:46:58,773 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:46:58,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:58,774 INFO L85 PathProgramCache]: Analyzing trace with hash -469484265, now seen corresponding path program 6 times [2022-11-18 19:46:58,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:58,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704656341] [2022-11-18 19:46:58,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:58,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:59,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:59,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704656341] [2022-11-18 19:46:59,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704656341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:59,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377030349] [2022-11-18 19:46:59,300 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:46:59,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:59,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:59,302 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:59,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:46:59,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-11-18 19:46:59,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:59,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:46:59,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:59,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:00,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377030349] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:00,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:00,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 36 [2022-11-18 19:47:00,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32918633] [2022-11-18 19:47:00,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:00,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:47:00,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:00,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:47:00,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:47:00,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:47:00,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 287 transitions, 6292 flow. Second operand has 36 states, 36 states have (on average 56.22222222222222) internal successors, (2024), 36 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:00,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:00,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:47:00,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:04,393 INFO L130 PetriNetUnfolder]: 324/2251 cut-off events. [2022-11-18 19:47:04,394 INFO L131 PetriNetUnfolder]: For 442375/442758 co-relation queries the response was YES. [2022-11-18 19:47:04,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22867 conditions, 2251 events. 324/2251 cut-off events. For 442375/442758 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 15556 event pairs, 1 based on Foata normal form. 50/2064 useless extension candidates. Maximal degree in co-relation 22713. Up to 503 conditions per place. [2022-11-18 19:47:04,456 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 75 selfloop transitions, 283 changer transitions 53/456 dead transitions. [2022-11-18 19:47:04,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 456 transitions, 23267 flow [2022-11-18 19:47:04,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-18 19:47:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2022-11-18 19:47:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 4453 transitions. [2022-11-18 19:47:04,468 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8261595547309833 [2022-11-18 19:47:04,468 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 4453 transitions. [2022-11-18 19:47:04,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 4453 transitions. [2022-11-18 19:47:04,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:04,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 4453 transitions. [2022-11-18 19:47:04,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 57.83116883116883) internal successors, (4453), 77 states have internal predecessors, (4453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:04,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 70.0) internal successors, (5460), 78 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:04,500 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 70.0) internal successors, (5460), 78 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:04,500 INFO L175 Difference]: Start difference. First operand has 344 places, 287 transitions, 6292 flow. Second operand 77 states and 4453 transitions. [2022-11-18 19:47:04,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 456 transitions, 23267 flow [2022-11-18 19:47:05,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 456 transitions, 19347 flow, removed 1884 selfloop flow, removed 33 redundant places. [2022-11-18 19:47:05,286 INFO L231 Difference]: Finished difference. Result has 418 places, 347 transitions, 9051 flow [2022-11-18 19:47:05,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=4794, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=9051, PETRI_PLACES=418, PETRI_TRANSITIONS=347} [2022-11-18 19:47:05,288 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 348 predicate places. [2022-11-18 19:47:05,288 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 347 transitions, 9051 flow [2022-11-18 19:47:05,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 56.22222222222222) internal successors, (2024), 36 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:05,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:05,290 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:05,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:05,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:47:05,497 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:47:05,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:05,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1416361247, now seen corresponding path program 7 times [2022-11-18 19:47:05,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:05,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595014549] [2022-11-18 19:47:05,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:05,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:06,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:06,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595014549] [2022-11-18 19:47:06,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595014549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:06,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689272296] [2022-11-18 19:47:06,600 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:47:06,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:06,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:06,602 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:06,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:47:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:06,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:47:06,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:07,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:08,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689272296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:08,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:08,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 57 [2022-11-18 19:47:08,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543939175] [2022-11-18 19:47:08,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:08,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-18 19:47:08,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:08,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-18 19:47:08,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=733, Invalid=2459, Unknown=0, NotChecked=0, Total=3192 [2022-11-18 19:47:08,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:47:08,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 347 transitions, 9051 flow. Second operand has 57 states, 57 states have (on average 56.14035087719298) internal successors, (3200), 57 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:08,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:08,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:47:08,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:14,196 INFO L130 PetriNetUnfolder]: 478/3284 cut-off events. [2022-11-18 19:47:14,196 INFO L131 PetriNetUnfolder]: For 1124260/1125042 co-relation queries the response was YES. [2022-11-18 19:47:14,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42719 conditions, 3284 events. 478/3284 cut-off events. For 1124260/1125042 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 23164 event pairs, 0 based on Foata normal form. 61/3001 useless extension candidates. Maximal degree in co-relation 42534. Up to 739 conditions per place. [2022-11-18 19:47:14,319 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 112 selfloop transitions, 423 changer transitions 62/642 dead transitions. [2022-11-18 19:47:14,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 642 transitions, 42598 flow [2022-11-18 19:47:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-11-18 19:47:14,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2022-11-18 19:47:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 6476 transitions. [2022-11-18 19:47:14,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8260204081632653 [2022-11-18 19:47:14,335 INFO L72 ComplementDD]: Start complementDD. Operand 112 states and 6476 transitions. [2022-11-18 19:47:14,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 6476 transitions. [2022-11-18 19:47:14,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:14,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 112 states and 6476 transitions. [2022-11-18 19:47:14,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 113 states, 112 states have (on average 57.82142857142857) internal successors, (6476), 112 states have internal predecessors, (6476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:14,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 113 states, 113 states have (on average 70.0) internal successors, (7910), 113 states have internal predecessors, (7910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:14,374 INFO L81 ComplementDD]: Finished complementDD. Result has 113 states, 113 states have (on average 70.0) internal successors, (7910), 113 states have internal predecessors, (7910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:14,375 INFO L175 Difference]: Start difference. First operand has 418 places, 347 transitions, 9051 flow. Second operand 112 states and 6476 transitions. [2022-11-18 19:47:14,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 642 transitions, 42598 flow [2022-11-18 19:47:16,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 642 transitions, 32380 flow, removed 4996 selfloop flow, removed 43 redundant places. [2022-11-18 19:47:16,288 INFO L231 Difference]: Finished difference. Result has 527 places, 487 transitions, 14103 flow [2022-11-18 19:47:16,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=6177, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=112, PETRI_FLOW=14103, PETRI_PLACES=527, PETRI_TRANSITIONS=487} [2022-11-18 19:47:16,289 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 457 predicate places. [2022-11-18 19:47:16,289 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 487 transitions, 14103 flow [2022-11-18 19:47:16,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 56.14035087719298) internal successors, (3200), 57 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:16,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:16,291 INFO L209 CegarLoopForPetriNet]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:16,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:16,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:47:16,492 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:47:16,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:16,492 INFO L85 PathProgramCache]: Analyzing trace with hash 735535231, now seen corresponding path program 8 times [2022-11-18 19:47:16,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:16,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30201584] [2022-11-18 19:47:16,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:16,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:18,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 0 proven. 1602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:18,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:18,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30201584] [2022-11-18 19:47:18,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30201584] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:18,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955087272] [2022-11-18 19:47:18,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:47:18,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:18,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:18,451 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:18,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:47:18,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:47:18,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:47:18,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 19:47:18,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 0 proven. 1602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:19,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 0 proven. 1602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:20,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955087272] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:20,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:20,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 83 [2022-11-18 19:47:20,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315693268] [2022-11-18 19:47:20,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:20,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-11-18 19:47:20,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-11-18 19:47:20,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1573, Invalid=5233, Unknown=0, NotChecked=0, Total=6806 [2022-11-18 19:47:20,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:47:20,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 487 transitions, 14103 flow. Second operand has 83 states, 83 states have (on average 56.096385542168676) internal successors, (4656), 83 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:20,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:20,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:47:20,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:27,177 INFO L130 PetriNetUnfolder]: 499/3454 cut-off events. [2022-11-18 19:47:27,177 INFO L131 PetriNetUnfolder]: For 1753783/1754541 co-relation queries the response was YES. [2022-11-18 19:47:27,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49342 conditions, 3454 events. 499/3454 cut-off events. For 1753783/1754541 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 24311 event pairs, 3 based on Foata normal form. 54/3143 useless extension candidates. Maximal degree in co-relation 49119. Up to 775 conditions per place. [2022-11-18 19:47:27,323 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 119 selfloop transitions, 458 changer transitions 17/639 dead transitions. [2022-11-18 19:47:27,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 639 transitions, 37990 flow [2022-11-18 19:47:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-18 19:47:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-11-18 19:47:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5068 transitions. [2022-11-18 19:47:27,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8227272727272728 [2022-11-18 19:47:27,336 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5068 transitions. [2022-11-18 19:47:27,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5068 transitions. [2022-11-18 19:47:27,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:27,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5068 transitions. [2022-11-18 19:47:27,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 57.59090909090909) internal successors, (5068), 88 states have internal predecessors, (5068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:27,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 70.0) internal successors, (6230), 89 states have internal predecessors, (6230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:27,367 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 70.0) internal successors, (6230), 89 states have internal predecessors, (6230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:27,369 INFO L175 Difference]: Start difference. First operand has 527 places, 487 transitions, 14103 flow. Second operand 88 states and 5068 transitions. [2022-11-18 19:47:27,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 639 transitions, 37990 flow [2022-11-18 19:47:31,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 639 transitions, 27201 flow, removed 5248 selfloop flow, removed 52 redundant places. [2022-11-18 19:47:31,528 INFO L231 Difference]: Finished difference. Result has 556 places, 540 transitions, 12157 flow [2022-11-18 19:47:31,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=9348, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=12157, PETRI_PLACES=556, PETRI_TRANSITIONS=540} [2022-11-18 19:47:31,529 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 486 predicate places. [2022-11-18 19:47:31,529 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 540 transitions, 12157 flow [2022-11-18 19:47:31,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 56.096385542168676) internal successors, (4656), 83 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:31,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:31,532 INFO L209 CegarLoopForPetriNet]: trace histogram [21, 21, 20, 20, 20, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:31,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:31,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:47:31,743 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:47:31,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash 297587281, now seen corresponding path program 9 times [2022-11-18 19:47:31,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:31,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530643332] [2022-11-18 19:47:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:31,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1791 backedges. 1605 proven. 180 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:47:33,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:33,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530643332] [2022-11-18 19:47:33,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530643332] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:33,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268970207] [2022-11-18 19:47:33,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:47:33,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:33,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:33,623 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:33,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:47:33,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2022-11-18 19:47:33,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:47:33,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 19:47:33,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1791 backedges. 1785 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:47:34,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:47:34,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268970207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:34,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:47:34,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [43] total 45 [2022-11-18 19:47:34,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296329210] [2022-11-18 19:47:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:34,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-18 19:47:34,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:34,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-18 19:47:34,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1491, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 19:47:34,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2022-11-18 19:47:34,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 540 transitions, 12157 flow. Second operand has 43 states, 43 states have (on average 59.95348837209303) internal successors, (2578), 43 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:34,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:34,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2022-11-18 19:47:34,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:01,579 INFO L130 PetriNetUnfolder]: 6990/34613 cut-off events. [2022-11-18 19:48:01,579 INFO L131 PetriNetUnfolder]: For 14196129/14196972 co-relation queries the response was YES. [2022-11-18 19:48:02,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438903 conditions, 34613 events. 6990/34613 cut-off events. For 14196129/14196972 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 430109 event pairs, 1889 based on Foata normal form. 19/30546 useless extension candidates. Maximal degree in co-relation 438689. Up to 8182 conditions per place. [2022-11-18 19:48:03,354 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 84 selfloop transitions, 81 changer transitions 149/692 dead transitions. [2022-11-18 19:48:03,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 692 transitions, 12611 flow [2022-11-18 19:48:03,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-18 19:48:03,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-11-18 19:48:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3820 transitions. [2022-11-18 19:48:03,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8662131519274376 [2022-11-18 19:48:03,361 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 3820 transitions. [2022-11-18 19:48:03,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 3820 transitions. [2022-11-18 19:48:03,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:03,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 3820 transitions. [2022-11-18 19:48:03,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 60.63492063492063) internal successors, (3820), 63 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:03,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 70.0) internal successors, (4480), 64 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:03,378 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 70.0) internal successors, (4480), 64 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:03,378 INFO L175 Difference]: Start difference. First operand has 556 places, 540 transitions, 12157 flow. Second operand 63 states and 3820 transitions. [2022-11-18 19:48:03,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 692 transitions, 12611 flow [2022-11-18 19:49:58,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 692 transitions, 11171 flow, removed 499 selfloop flow, removed 48 redundant places. [2022-11-18 19:49:58,352 INFO L231 Difference]: Finished difference. Result has 566 places, 463 transitions, 7225 flow [2022-11-18 19:49:58,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=10405, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=7225, PETRI_PLACES=566, PETRI_TRANSITIONS=463} [2022-11-18 19:49:58,353 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 496 predicate places. [2022-11-18 19:49:58,353 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 463 transitions, 7225 flow [2022-11-18 19:49:58,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 59.95348837209303) internal successors, (2578), 43 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:58,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:58,355 INFO L209 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:58,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:58,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:49:58,562 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:49:58,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:58,562 INFO L85 PathProgramCache]: Analyzing trace with hash -43432530, now seen corresponding path program 10 times [2022-11-18 19:49:58,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:58,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473574127] [2022-11-18 19:49:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:58,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:49:58,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:49:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:49:58,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:49:58,865 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:49:58,866 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-18 19:49:58,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-18 19:49:58,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-18 19:49:58,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:49:58,870 INFO L444 BasicCegarLoop]: Path program histogram: [10, 2, 2, 2, 1, 1] [2022-11-18 19:49:58,878 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 19:49:58,879 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:49:59,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:49:59 BasicIcfg [2022-11-18 19:49:59,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:49:59,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:49:59,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:49:59,087 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:49:59,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:46:34" (3/4) ... [2022-11-18 19:49:59,090 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-18 19:49:59,225 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:49:59,225 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:49:59,226 INFO L158 Benchmark]: Toolchain (without parser) took 205486.70ms. Allocated memory was 109.1MB in the beginning and 12.1GB in the end (delta: 12.0GB). Free memory was 68.4MB in the beginning and 8.2GB in the end (delta: -8.1GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. [2022-11-18 19:49:59,226 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 109.1MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:49:59,227 INFO L158 Benchmark]: CACSL2BoogieTranslator took 600.47ms. Allocated memory is still 109.1MB. Free memory was 68.2MB in the beginning and 74.2MB in the end (delta: -6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 19:49:59,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.12ms. Allocated memory is still 109.1MB. Free memory was 74.2MB in the beginning and 72.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:49:59,228 INFO L158 Benchmark]: Boogie Preprocessor took 56.65ms. Allocated memory is still 109.1MB. Free memory was 72.1MB in the beginning and 71.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:49:59,228 INFO L158 Benchmark]: RCFGBuilder took 391.74ms. Allocated memory is still 109.1MB. Free memory was 70.7MB in the beginning and 57.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 19:49:59,229 INFO L158 Benchmark]: TraceAbstraction took 204216.65ms. Allocated memory was 109.1MB in the beginning and 12.1GB in the end (delta: 12.0GB). Free memory was 57.1MB in the beginning and 8.2GB in the end (delta: -8.2GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. [2022-11-18 19:49:59,229 INFO L158 Benchmark]: Witness Printer took 139.19ms. Allocated memory is still 12.1GB. Free memory was 8.2GB in the beginning and 8.2GB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-18 19:49:59,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 109.1MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 600.47ms. Allocated memory is still 109.1MB. Free memory was 68.2MB in the beginning and 74.2MB in the end (delta: -6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.12ms. Allocated memory is still 109.1MB. Free memory was 74.2MB in the beginning and 72.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.65ms. Allocated memory is still 109.1MB. Free memory was 72.1MB in the beginning and 71.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 391.74ms. Allocated memory is still 109.1MB. Free memory was 70.7MB in the beginning and 57.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 204216.65ms. Allocated memory was 109.1MB in the beginning and 12.1GB in the end (delta: 12.0GB). Free memory was 57.1MB in the beginning and 8.2GB in the end (delta: -8.2GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. * Witness Printer took 139.19ms. Allocated memory is still 12.1GB. Free memory was 8.2GB in the beginning and 8.2GB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; VAL [i=3, j=6] [L712] 0 pthread_t id1, id2; VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, i=3, id1={5:0}, id2={3:0}, j=6] [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=1] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=0, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=1, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=2, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=3] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=4] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=5] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=6] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=6] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=6] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=6] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=7] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=7] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=7] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=8] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=8] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=8, k=9] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=9] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=9] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=9] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=10] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=10] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=10] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=11] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=11] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=11] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=11] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=11] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=12] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=11] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=13, k=11] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=13, k=11] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=13, k=12] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=12] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=12, k=13] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=13] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=13] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=13, k=13] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=13] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=13] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=14] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=14] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=15] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=14] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=14] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=15] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=15] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=15] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=16] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=16] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=15] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=16] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=16] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=16] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=16] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=17] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=16, k=17] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=17] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=17] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=17] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=18] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=17] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=18] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=18] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=19] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=18] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=18] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=19] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=19] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L719] 0 int condJ = j >= (2*20 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=45, id1={5:0}, id2={3:0}, j=46, k=19, k=19] [L721] COND TRUE 0 condI || condJ VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=45, id1={5:0}, id2={3:0}, j=46, k=19, k=19] [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=45, id1={5:0}, id2={3:0}, j=46, k=19, k=19] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 203.8s, OverallIterations: 18, TraceHistogramMax: 21, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 180.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3081 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3081 mSDsluCounter, 334 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 242 mSDsCounter, 668 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3826 IncrementalHoareTripleChecker+Invalid, 4494 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 668 mSolverCounterUnsat, 92 mSDtfsCounter, 3826 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2945 GetRequests, 2017 SyntacticMatches, 7 SemanticMatches, 921 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28090 ImplicationChecksByTransitivity, 22.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14103occurred in iteration=15, InterpolantAutomatonStates: 666, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 18.3s InterpolantComputationTime, 2867 NumberOfCodeBlocks, 2867 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 3561 ConstructedInterpolants, 0 QuantifiedInterpolants, 12407 SizeOfPredicates, 177 NumberOfNonLiveVariables, 2568 ConjunctsInSsa, 235 ConjunctsInUnsatCore, 38 InterpolantComputations, 7 PerfectInterpolantSequences, 3402/12069 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-18 19:49:59,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70de9c71-ac03-47f5-86bf-6b431a97a49e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE