./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:26:42,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:26:42,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:26:42,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:26:42,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:26:42,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:26:42,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:26:42,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:26:42,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:26:42,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:26:42,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:26:42,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:26:42,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:26:42,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:26:42,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:26:42,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:26:42,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:26:42,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:26:42,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:26:42,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:26:42,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:26:42,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:26:42,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:26:42,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:26:42,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:26:42,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:26:42,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:26:42,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:26:42,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:26:42,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:26:42,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:26:42,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:26:42,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:26:42,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:26:42,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:26:42,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:26:42,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:26:42,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:26:42,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:26:42,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:26:42,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:26:42,139 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:26:42,188 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:26:42,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:26:42,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:26:42,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:26:42,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:26:42,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:26:42,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:26:42,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:26:42,193 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:26:42,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:26:42,195 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:26:42,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:26:42,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:26:42,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:26:42,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:26:42,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:26:42,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:26:42,197 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:26:42,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:26:42,197 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:26:42,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:26:42,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:26:42,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:26:42,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:26:42,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:26:42,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:26:42,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:26:42,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:26:42,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:26:42,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:26:42,201 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:26:42,201 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:26:42,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:26:42,202 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_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc [2022-11-20 12:26:42,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:26:42,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:26:42,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:26:42,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:26:42,571 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:26:42,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2022-11-20 12:26:45,775 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:26:46,006 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:26:46,007 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2022-11-20 12:26:46,016 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/data/7017db154/c1371f059c5d426b950e8879111bb09e/FLAGbd75eb3c9 [2022-11-20 12:26:46,032 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/data/7017db154/c1371f059c5d426b950e8879111bb09e [2022-11-20 12:26:46,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:26:46,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:26:46,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:26:46,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:26:46,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:26:46,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542470ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46, skipping insertion in model container [2022-11-20 12:26:46,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:26:46,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:26:46,377 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2022-11-20 12:26:46,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:26:46,401 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:26:46,491 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2022-11-20 12:26:46,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:26:46,511 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:26:46,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46 WrapperNode [2022-11-20 12:26:46,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:26:46,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:26:46,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:26:46,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:26:46,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,668 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1522 [2022-11-20 12:26:46,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:26:46,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:26:46,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:26:46,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:26:46,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,790 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:26:46,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:26:46,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:26:46,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:26:46,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46" (1/1) ... [2022-11-20 12:26:46,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:26:46,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:46,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:26:46,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:26:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:26:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:26:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:26:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:26:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:26:46,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:26:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:26:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:26:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:26:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:26:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:26:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:26:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:26:46,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:26:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:26:46,906 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:26:47,158 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:26:47,160 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:26:49,413 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:26:51,509 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:26:51,510 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-20 12:26:51,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:26:51 BoogieIcfgContainer [2022-11-20 12:26:51,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:26:51,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:26:51,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:26:51,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:26:51,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:26:46" (1/3) ... [2022-11-20 12:26:51,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378b5095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:26:51, skipping insertion in model container [2022-11-20 12:26:51,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:46" (2/3) ... [2022-11-20 12:26:51,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378b5095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:26:51, skipping insertion in model container [2022-11-20 12:26:51,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:26:51" (3/3) ... [2022-11-20 12:26:51,530 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2022-11-20 12:26:51,541 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:26:51,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:26:51,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:26:51,553 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:26:51,880 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:26:51,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 476 transitions, 968 flow [2022-11-20 12:26:52,162 INFO L130 PetriNetUnfolder]: 53/474 cut-off events. [2022-11-20 12:26:52,163 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:26:52,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 474 events. 53/474 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 488 event pairs, 0 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 402. Up to 7 conditions per place. [2022-11-20 12:26:52,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 476 transitions, 968 flow [2022-11-20 12:26:52,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 419 places, 465 transitions, 942 flow [2022-11-20 12:26:52,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:26:52,197 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;@3f4e2da8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:26:52,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 12:26:52,319 INFO L130 PetriNetUnfolder]: 53/464 cut-off events. [2022-11-20 12:26:52,320 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:26:52,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:26:52,321 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:52,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:26:52,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:52,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1911985869, now seen corresponding path program 1 times [2022-11-20 12:26:52,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:52,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581488779] [2022-11-20 12:26:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:52,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:52,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:52,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581488779] [2022-11-20 12:26:52,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581488779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:26:52,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:26:52,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:26:52,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829994715] [2022-11-20 12:26:52,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:26:52,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:26:52,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:26:52,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:26:52,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 476 [2022-11-20 12:26:52,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 465 transitions, 942 flow. Second operand has 2 states, 2 states have (on average 428.0) internal successors, (856), 2 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:52,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:26:52,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 476 [2022-11-20 12:26:52,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:26:53,334 INFO L130 PetriNetUnfolder]: 103/597 cut-off events. [2022-11-20 12:26:53,334 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-20 12:26:53,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 597 events. 103/597 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1198 event pairs, 15 based on Foata normal form. 45/565 useless extension candidates. Maximal degree in co-relation 388. Up to 121 conditions per place. [2022-11-20 12:26:53,340 INFO L137 encePairwiseOnDemand]: 447/476 looper letters, 26 selfloop transitions, 0 changer transitions 17/436 dead transitions. [2022-11-20 12:26:53,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 436 transitions, 936 flow [2022-11-20 12:26:53,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:26:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:26:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 895 transitions. [2022-11-20 12:26:53,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9401260504201681 [2022-11-20 12:26:53,366 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 895 transitions. [2022-11-20 12:26:53,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 895 transitions. [2022-11-20 12:26:53,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:26:53,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 895 transitions. [2022-11-20 12:26:53,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 447.5) internal successors, (895), 2 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:53,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 476.0) internal successors, (1428), 3 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:53,391 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 476.0) internal successors, (1428), 3 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:53,393 INFO L175 Difference]: Start difference. First operand has 419 places, 465 transitions, 942 flow. Second operand 2 states and 895 transitions. [2022-11-20 12:26:53,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 436 transitions, 936 flow [2022-11-20 12:26:53,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 436 transitions, 928 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:26:53,409 INFO L231 Difference]: Finished difference. Result has 416 places, 419 transitions, 842 flow [2022-11-20 12:26:53,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=842, PETRI_PLACES=416, PETRI_TRANSITIONS=419} [2022-11-20 12:26:53,417 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, -3 predicate places. [2022-11-20 12:26:53,417 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 419 transitions, 842 flow [2022-11-20 12:26:53,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 428.0) internal successors, (856), 2 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:53,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:26:53,419 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:53,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:26:53,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:26:53,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1542776426, now seen corresponding path program 1 times [2022-11-20 12:26:53,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:53,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836297178] [2022-11-20 12:26:53,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:53,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:54,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:54,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836297178] [2022-11-20 12:26:54,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836297178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:26:54,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:26:54,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:26:54,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630765500] [2022-11-20 12:26:54,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:26:54,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:26:54,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:54,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:26:54,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:26:54,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 476 [2022-11-20 12:26:54,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 419 transitions, 842 flow. Second operand has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:54,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:26:54,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 476 [2022-11-20 12:26:54,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:26:55,187 INFO L130 PetriNetUnfolder]: 103/604 cut-off events. [2022-11-20 12:26:55,188 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 12:26:55,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 604 events. 103/604 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1179 event pairs, 15 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 841. Up to 168 conditions per place. [2022-11-20 12:26:55,198 INFO L137 encePairwiseOnDemand]: 454/476 looper letters, 120 selfloop transitions, 18 changer transitions 0/435 dead transitions. [2022-11-20 12:26:55,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 435 transitions, 1150 flow [2022-11-20 12:26:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:26:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:26:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2086 transitions. [2022-11-20 12:26:55,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7303921568627451 [2022-11-20 12:26:55,205 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2086 transitions. [2022-11-20 12:26:55,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2086 transitions. [2022-11-20 12:26:55,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:26:55,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2086 transitions. [2022-11-20 12:26:55,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 347.6666666666667) internal successors, (2086), 6 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:55,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:55,222 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:55,222 INFO L175 Difference]: Start difference. First operand has 416 places, 419 transitions, 842 flow. Second operand 6 states and 2086 transitions. [2022-11-20 12:26:55,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 435 transitions, 1150 flow [2022-11-20 12:26:55,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 435 transitions, 1150 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:26:55,233 INFO L231 Difference]: Finished difference. Result has 405 places, 423 transitions, 910 flow [2022-11-20 12:26:55,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=910, PETRI_PLACES=405, PETRI_TRANSITIONS=423} [2022-11-20 12:26:55,235 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, -14 predicate places. [2022-11-20 12:26:55,236 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 423 transitions, 910 flow [2022-11-20 12:26:55,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:55,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:26:55,238 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:55,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:26:55,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:26:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:55,241 INFO L85 PathProgramCache]: Analyzing trace with hash -59432798, now seen corresponding path program 1 times [2022-11-20 12:26:55,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:55,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592800530] [2022-11-20 12:26:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:55,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:26:55,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:55,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592800530] [2022-11-20 12:26:55,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592800530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:26:55,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:26:55,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:26:55,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867383766] [2022-11-20 12:26:55,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:26:55,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:26:55,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:55,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:26:55,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:26:55,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 476 [2022-11-20 12:26:55,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 423 transitions, 910 flow. Second operand has 5 states, 5 states have (on average 341.2) internal successors, (1706), 5 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:55,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:26:55,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 476 [2022-11-20 12:26:55,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:26:56,255 INFO L130 PetriNetUnfolder]: 103/628 cut-off events. [2022-11-20 12:26:56,255 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-20 12:26:56,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 628 events. 103/628 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1167 event pairs, 15 based on Foata normal form. 0/572 useless extension candidates. Maximal degree in co-relation 911. Up to 162 conditions per place. [2022-11-20 12:26:56,259 INFO L137 encePairwiseOnDemand]: 454/476 looper letters, 124 selfloop transitions, 18 changer transitions 0/439 dead transitions. [2022-11-20 12:26:56,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 439 transitions, 1226 flow [2022-11-20 12:26:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:26:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:26:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2086 transitions. [2022-11-20 12:26:56,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7303921568627451 [2022-11-20 12:26:56,266 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2086 transitions. [2022-11-20 12:26:56,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2086 transitions. [2022-11-20 12:26:56,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:26:56,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2086 transitions. [2022-11-20 12:26:56,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 347.6666666666667) internal successors, (2086), 6 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:56,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:56,284 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:56,284 INFO L175 Difference]: Start difference. First operand has 405 places, 423 transitions, 910 flow. Second operand 6 states and 2086 transitions. [2022-11-20 12:26:56,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 439 transitions, 1226 flow [2022-11-20 12:26:56,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 439 transitions, 1198 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:26:56,296 INFO L231 Difference]: Finished difference. Result has 407 places, 427 transitions, 950 flow [2022-11-20 12:26:56,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=950, PETRI_PLACES=407, PETRI_TRANSITIONS=427} [2022-11-20 12:26:56,300 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, -12 predicate places. [2022-11-20 12:26:56,300 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 427 transitions, 950 flow [2022-11-20 12:26:56,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 341.2) internal successors, (1706), 5 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:56,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:26:56,302 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:56,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:26:56,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:26:56,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:56,304 INFO L85 PathProgramCache]: Analyzing trace with hash -101077004, now seen corresponding path program 1 times [2022-11-20 12:26:56,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:56,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911974751] [2022-11-20 12:26:56,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:56,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:26:56,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:56,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911974751] [2022-11-20 12:26:56,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911974751] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:26:56,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382793262] [2022-11-20 12:26:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:56,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:56,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:56,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:26:56,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:26:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:57,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:26:57,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:26:57,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:26:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:26:57,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382793262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:26:57,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:26:57,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 12:26:57,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296576338] [2022-11-20 12:26:57,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:26:57,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:26:57,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:57,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:26:57,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:26:57,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 476 [2022-11-20 12:26:57,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 427 transitions, 950 flow. Second operand has 15 states, 15 states have (on average 324.6666666666667) internal successors, (4870), 15 states have internal predecessors, (4870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:57,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:26:57,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 476 [2022-11-20 12:26:57,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:26:59,088 INFO L130 PetriNetUnfolder]: 103/672 cut-off events. [2022-11-20 12:26:59,089 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-20 12:26:59,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 672 events. 103/672 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1103 event pairs, 15 based on Foata normal form. 12/632 useless extension candidates. Maximal degree in co-relation 1019. Up to 150 conditions per place. [2022-11-20 12:26:59,093 INFO L137 encePairwiseOnDemand]: 410/476 looper letters, 120 selfloop transitions, 78 changer transitions 0/487 dead transitions. [2022-11-20 12:26:59,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 487 transitions, 1474 flow [2022-11-20 12:26:59,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:26:59,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-20 12:26:59,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 6214 transitions. [2022-11-20 12:26:59,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6870853604599735 [2022-11-20 12:26:59,108 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 6214 transitions. [2022-11-20 12:26:59,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 6214 transitions. [2022-11-20 12:26:59,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:26:59,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 6214 transitions. [2022-11-20 12:26:59,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 327.05263157894734) internal successors, (6214), 19 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:59,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 476.0) internal successors, (9520), 20 states have internal predecessors, (9520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:59,152 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 476.0) internal successors, (9520), 20 states have internal predecessors, (9520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:59,152 INFO L175 Difference]: Start difference. First operand has 407 places, 427 transitions, 950 flow. Second operand 19 states and 6214 transitions. [2022-11-20 12:26:59,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 487 transitions, 1474 flow [2022-11-20 12:26:59,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 487 transitions, 1446 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:26:59,172 INFO L231 Difference]: Finished difference. Result has 428 places, 463 transitions, 1317 flow [2022-11-20 12:26:59,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1317, PETRI_PLACES=428, PETRI_TRANSITIONS=463} [2022-11-20 12:26:59,174 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 9 predicate places. [2022-11-20 12:26:59,175 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 463 transitions, 1317 flow [2022-11-20 12:26:59,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 324.6666666666667) internal successors, (4870), 15 states have internal predecessors, (4870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:59,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:26:59,178 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:59,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:59,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:59,389 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:26:59,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:59,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1217041670, now seen corresponding path program 2 times [2022-11-20 12:26:59,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:59,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274348803] [2022-11-20 12:26:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:59,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-20 12:27:00,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:00,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274348803] [2022-11-20 12:27:00,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274348803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:00,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50111342] [2022-11-20 12:27:00,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:27:00,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:00,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:00,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:00,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:27:00,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:27:00,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:27:00,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 12:27:00,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:27:00,998 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:00,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2022-11-20 12:27:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-20 12:27:01,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:27:01,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50111342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:01,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:27:01,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-11-20 12:27:01,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646834612] [2022-11-20 12:27:01,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:01,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:27:01,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:01,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:27:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:27:01,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 476 [2022-11-20 12:27:01,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 463 transitions, 1317 flow. Second operand has 6 states, 6 states have (on average 330.6666666666667) internal successors, (1984), 6 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:01,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:27:01,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 476 [2022-11-20 12:27:01,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:27:02,168 INFO L130 PetriNetUnfolder]: 230/948 cut-off events. [2022-11-20 12:27:02,168 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-20 12:27:02,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 948 events. 230/948 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2831 event pairs, 45 based on Foata normal form. 1/848 useless extension candidates. Maximal degree in co-relation 1549. Up to 332 conditions per place. [2022-11-20 12:27:02,176 INFO L137 encePairwiseOnDemand]: 469/476 looper letters, 129 selfloop transitions, 2 changer transitions 9/489 dead transitions. [2022-11-20 12:27:02,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 489 transitions, 1653 flow [2022-11-20 12:27:02,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:27:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:27:02,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2031 transitions. [2022-11-20 12:27:02,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7111344537815126 [2022-11-20 12:27:02,183 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2031 transitions. [2022-11-20 12:27:02,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2031 transitions. [2022-11-20 12:27:02,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:27:02,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2031 transitions. [2022-11-20 12:27:02,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 338.5) internal successors, (2031), 6 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:02,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:02,207 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:02,207 INFO L175 Difference]: Start difference. First operand has 428 places, 463 transitions, 1317 flow. Second operand 6 states and 2031 transitions. [2022-11-20 12:27:02,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 489 transitions, 1653 flow [2022-11-20 12:27:02,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 489 transitions, 1592 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-11-20 12:27:02,224 INFO L231 Difference]: Finished difference. Result has 430 places, 463 transitions, 1272 flow [2022-11-20 12:27:02,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1272, PETRI_PLACES=430, PETRI_TRANSITIONS=463} [2022-11-20 12:27:02,225 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 11 predicate places. [2022-11-20 12:27:02,226 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 463 transitions, 1272 flow [2022-11-20 12:27:02,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 330.6666666666667) internal successors, (1984), 6 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:02,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:27:02,228 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:02,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:27:02,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:02,437 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:27:02,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:02,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1353517704, now seen corresponding path program 3 times [2022-11-20 12:27:02,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:02,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454822998] [2022-11-20 12:27:02,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:02,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-20 12:27:03,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:03,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454822998] [2022-11-20 12:27:03,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454822998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:03,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385680432] [2022-11-20 12:27:03,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:27:03,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:03,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:03,171 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:03,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:27:03,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 12:27:03,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:27:03,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 12:27:03,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:27:03,851 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:03,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2022-11-20 12:27:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-20 12:27:03,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:27:03,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385680432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:03,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:27:03,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-11-20 12:27:03,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987268830] [2022-11-20 12:27:03,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:03,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:27:03,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:03,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:27:03,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:27:03,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 476 [2022-11-20 12:27:03,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 463 transitions, 1272 flow. Second operand has 6 states, 6 states have (on average 330.6666666666667) internal successors, (1984), 6 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:03,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:27:03,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 476 [2022-11-20 12:27:03,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:27:04,982 INFO L130 PetriNetUnfolder]: 266/1029 cut-off events. [2022-11-20 12:27:04,982 INFO L131 PetriNetUnfolder]: For 152/163 co-relation queries the response was YES. [2022-11-20 12:27:04,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 1029 events. 266/1029 cut-off events. For 152/163 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3435 event pairs, 48 based on Foata normal form. 1/920 useless extension candidates. Maximal degree in co-relation 1719. Up to 362 conditions per place. [2022-11-20 12:27:04,991 INFO L137 encePairwiseOnDemand]: 468/476 looper letters, 130 selfloop transitions, 3 changer transitions 9/491 dead transitions. [2022-11-20 12:27:04,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 491 transitions, 1633 flow [2022-11-20 12:27:04,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:27:04,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:27:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2033 transitions. [2022-11-20 12:27:04,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7118347338935574 [2022-11-20 12:27:04,997 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2033 transitions. [2022-11-20 12:27:04,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2033 transitions. [2022-11-20 12:27:04,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:27:04,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2033 transitions. [2022-11-20 12:27:05,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 338.8333333333333) internal successors, (2033), 6 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:05,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:05,010 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:05,010 INFO L175 Difference]: Start difference. First operand has 430 places, 463 transitions, 1272 flow. Second operand 6 states and 2033 transitions. [2022-11-20 12:27:05,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 491 transitions, 1633 flow [2022-11-20 12:27:05,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 491 transitions, 1613 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-20 12:27:05,024 INFO L231 Difference]: Finished difference. Result has 432 places, 464 transitions, 1287 flow [2022-11-20 12:27:05,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1287, PETRI_PLACES=432, PETRI_TRANSITIONS=464} [2022-11-20 12:27:05,026 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 13 predicate places. [2022-11-20 12:27:05,026 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 464 transitions, 1287 flow [2022-11-20 12:27:05,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 330.6666666666667) internal successors, (1984), 6 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:05,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:27:05,028 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:05,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:27:05,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:05,236 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:27:05,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:05,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2087561892, now seen corresponding path program 4 times [2022-11-20 12:27:05,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:05,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19937585] [2022-11-20 12:27:05,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:05,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-20 12:27:05,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:05,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19937585] [2022-11-20 12:27:05,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19937585] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:05,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449427290] [2022-11-20 12:27:05,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:27:05,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:05,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:05,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:05,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:27:06,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:27:06,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:27:06,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:27:06,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:27:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-20 12:27:06,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:27:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-20 12:27:06,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449427290] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:27:06,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:27:06,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 12:27:06,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237932308] [2022-11-20 12:27:06,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:27:06,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:27:06,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:06,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:27:06,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:27:06,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 476 [2022-11-20 12:27:06,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 464 transitions, 1287 flow. Second operand has 22 states, 22 states have (on average 322.8181818181818) internal successors, (7102), 22 states have internal predecessors, (7102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:07,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:27:07,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 476 [2022-11-20 12:27:07,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:27:08,922 INFO L130 PetriNetUnfolder]: 124/933 cut-off events. [2022-11-20 12:27:08,923 INFO L131 PetriNetUnfolder]: For 264/273 co-relation queries the response was YES. [2022-11-20 12:27:08,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 933 events. 124/933 cut-off events. For 264/273 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2283 event pairs, 21 based on Foata normal form. 16/874 useless extension candidates. Maximal degree in co-relation 1677. Up to 188 conditions per place. [2022-11-20 12:27:08,929 INFO L137 encePairwiseOnDemand]: 410/476 looper letters, 152 selfloop transitions, 126 changer transitions 0/568 dead transitions. [2022-11-20 12:27:08,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 568 transitions, 2267 flow [2022-11-20 12:27:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 12:27:08,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 12:27:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 10090 transitions. [2022-11-20 12:27:08,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6837896448902141 [2022-11-20 12:27:08,990 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 10090 transitions. [2022-11-20 12:27:08,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 10090 transitions. [2022-11-20 12:27:09,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:27:09,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 10090 transitions. [2022-11-20 12:27:09,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 325.48387096774195) internal successors, (10090), 31 states have internal predecessors, (10090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:09,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 476.0) internal successors, (15232), 32 states have internal predecessors, (15232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:09,072 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 476.0) internal successors, (15232), 32 states have internal predecessors, (15232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:09,072 INFO L175 Difference]: Start difference. First operand has 432 places, 464 transitions, 1287 flow. Second operand 31 states and 10090 transitions. [2022-11-20 12:27:09,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 568 transitions, 2267 flow [2022-11-20 12:27:09,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 568 transitions, 2258 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-20 12:27:09,088 INFO L231 Difference]: Finished difference. Result has 461 places, 520 transitions, 1961 flow [2022-11-20 12:27:09,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1961, PETRI_PLACES=461, PETRI_TRANSITIONS=520} [2022-11-20 12:27:09,090 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 42 predicate places. [2022-11-20 12:27:09,090 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 520 transitions, 1961 flow [2022-11-20 12:27:09,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 322.8181818181818) internal successors, (7102), 22 states have internal predecessors, (7102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:27:09,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:27:09,094 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:09,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:27:09,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:09,306 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:27:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1755047524, now seen corresponding path program 5 times [2022-11-20 12:27:09,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:09,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257425652] [2022-11-20 12:27:09,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:09,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-20 12:27:10,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:10,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257425652] [2022-11-20 12:27:10,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257425652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773979922] [2022-11-20 12:27:10,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:27:10,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:10,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:10,378 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:10,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:28:04,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-20 12:28:04,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:28:04,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:28:04,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-20 12:28:04,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-20 12:28:05,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773979922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:28:05,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:28:05,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2022-11-20 12:28:05,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684235696] [2022-11-20 12:28:05,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:05,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-20 12:28:05,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:05,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-20 12:28:05,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1137, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 12:28:05,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 476 [2022-11-20 12:28:05,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 520 transitions, 1961 flow. Second operand has 39 states, 39 states have (on average 320.87179487179486) internal successors, (12514), 39 states have internal predecessors, (12514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:05,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:05,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 476 [2022-11-20 12:28:05,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:07,400 INFO L130 PetriNetUnfolder]: 124/1017 cut-off events. [2022-11-20 12:28:07,401 INFO L131 PetriNetUnfolder]: For 602/611 co-relation queries the response was YES. [2022-11-20 12:28:07,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 1017 events. 124/1017 cut-off events. For 602/611 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2307 event pairs, 21 based on Foata normal form. 12/954 useless extension candidates. Maximal degree in co-relation 2168. Up to 173 conditions per place. [2022-11-20 12:28:07,408 INFO L137 encePairwiseOnDemand]: 448/476 looper letters, 190 selfloop transitions, 114 changer transitions 0/594 dead transitions. [2022-11-20 12:28:07,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 594 transitions, 3025 flow [2022-11-20 12:28:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 12:28:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 12:28:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 11620 transitions. [2022-11-20 12:28:07,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6781045751633987 [2022-11-20 12:28:07,437 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 11620 transitions. [2022-11-20 12:28:07,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 11620 transitions. [2022-11-20 12:28:07,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:07,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 11620 transitions. [2022-11-20 12:28:07,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 322.77777777777777) internal successors, (11620), 36 states have internal predecessors, (11620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:07,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 476.0) internal successors, (17612), 37 states have internal predecessors, (17612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:07,506 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 476.0) internal successors, (17612), 37 states have internal predecessors, (17612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:07,506 INFO L175 Difference]: Start difference. First operand has 461 places, 520 transitions, 1961 flow. Second operand 36 states and 11620 transitions. [2022-11-20 12:28:07,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 594 transitions, 3025 flow [2022-11-20 12:28:07,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 594 transitions, 2812 flow, removed 52 selfloop flow, removed 16 redundant places. [2022-11-20 12:28:07,527 INFO L231 Difference]: Finished difference. Result has 487 places, 558 transitions, 2331 flow [2022-11-20 12:28:07,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2331, PETRI_PLACES=487, PETRI_TRANSITIONS=558} [2022-11-20 12:28:07,532 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 68 predicate places. [2022-11-20 12:28:07,532 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 558 transitions, 2331 flow [2022-11-20 12:28:07,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 320.87179487179486) internal successors, (12514), 39 states have internal predecessors, (12514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:07,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:07,539 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:07,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:07,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 12:28:07,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:28:07,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:07,755 INFO L85 PathProgramCache]: Analyzing trace with hash -434670962, now seen corresponding path program 6 times [2022-11-20 12:28:07,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:07,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138810389] [2022-11-20 12:28:07,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:07,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-20 12:28:09,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:09,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138810389] [2022-11-20 12:28:09,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138810389] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:09,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306737332] [2022-11-20 12:28:09,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:28:09,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:09,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:09,774 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:09,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:28:10,461 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-20 12:28:10,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:28:10,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 12:28:10,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:13,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,888 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:28:13,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2022-11-20 12:28:13,995 INFO L321 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-11-20 12:28:13,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 24 [2022-11-20 12:28:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2022-11-20 12:28:14,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:28:14,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306737332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:14,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:28:14,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [27] total 43 [2022-11-20 12:28:14,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746150630] [2022-11-20 12:28:14,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:14,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:28:14,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:14,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:28:14,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1593, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 12:28:14,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 476 [2022-11-20 12:28:14,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 558 transitions, 2331 flow. Second operand has 18 states, 18 states have (on average 259.6666666666667) internal successors, (4674), 18 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:14,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:14,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 476 [2022-11-20 12:28:14,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:17,206 INFO L130 PetriNetUnfolder]: 297/1342 cut-off events. [2022-11-20 12:28:17,206 INFO L131 PetriNetUnfolder]: For 714/742 co-relation queries the response was YES. [2022-11-20 12:28:17,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 1342 events. 297/1342 cut-off events. For 714/742 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4392 event pairs, 69 based on Foata normal form. 2/1214 useless extension candidates. Maximal degree in co-relation 2747. Up to 281 conditions per place. [2022-11-20 12:28:17,216 INFO L137 encePairwiseOnDemand]: 417/476 looper letters, 141 selfloop transitions, 55 changer transitions 8/585 dead transitions. [2022-11-20 12:28:17,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 585 transitions, 2806 flow [2022-11-20 12:28:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 12:28:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-20 12:28:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6480 transitions. [2022-11-20 12:28:17,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5445378151260504 [2022-11-20 12:28:17,228 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6480 transitions. [2022-11-20 12:28:17,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6480 transitions. [2022-11-20 12:28:17,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:17,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6480 transitions. [2022-11-20 12:28:17,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 259.2) internal successors, (6480), 25 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:17,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 476.0) internal successors, (12376), 26 states have internal predecessors, (12376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:17,265 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 476.0) internal successors, (12376), 26 states have internal predecessors, (12376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:17,265 INFO L175 Difference]: Start difference. First operand has 487 places, 558 transitions, 2331 flow. Second operand 25 states and 6480 transitions. [2022-11-20 12:28:17,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 585 transitions, 2806 flow [2022-11-20 12:28:17,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 585 transitions, 2681 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-11-20 12:28:17,286 INFO L231 Difference]: Finished difference. Result has 512 places, 558 transitions, 2326 flow [2022-11-20 12:28:17,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2326, PETRI_PLACES=512, PETRI_TRANSITIONS=558} [2022-11-20 12:28:17,288 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 93 predicate places. [2022-11-20 12:28:17,288 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 558 transitions, 2326 flow [2022-11-20 12:28:17,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 259.6666666666667) internal successors, (4674), 18 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:17,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:17,291 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:17,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:17,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:17,508 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:28:17,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1752722204, now seen corresponding path program 1 times [2022-11-20 12:28:17,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:17,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859213915] [2022-11-20 12:28:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:17,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-20 12:28:19,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:19,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859213915] [2022-11-20 12:28:19,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859213915] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:19,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525677944] [2022-11-20 12:28:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:19,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:19,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:19,338 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:19,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:28:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:20,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:28:20,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-20 12:28:20,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-20 12:28:21,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525677944] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:28:21,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:28:21,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2022-11-20 12:28:21,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556352252] [2022-11-20 12:28:21,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:21,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-20 12:28:21,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:21,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-20 12:28:21,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=2252, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 12:28:21,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 476 [2022-11-20 12:28:21,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 558 transitions, 2326 flow. Second operand has 54 states, 54 states have (on average 320.27777777777777) internal successors, (17295), 54 states have internal predecessors, (17295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:21,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:21,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 476 [2022-11-20 12:28:21,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:23,954 INFO L130 PetriNetUnfolder]: 139/1108 cut-off events. [2022-11-20 12:28:23,955 INFO L131 PetriNetUnfolder]: For 1125/1139 co-relation queries the response was YES. [2022-11-20 12:28:23,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 1108 events. 139/1108 cut-off events. For 1125/1139 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2723 event pairs, 30 based on Foata normal form. 4/1030 useless extension candidates. Maximal degree in co-relation 2450. Up to 200 conditions per place. [2022-11-20 12:28:23,964 INFO L137 encePairwiseOnDemand]: 448/476 looper letters, 198 selfloop transitions, 126 changer transitions 0/614 dead transitions. [2022-11-20 12:28:23,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 614 transitions, 3334 flow [2022-11-20 12:28:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 12:28:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-20 12:28:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 13528 transitions. [2022-11-20 12:28:23,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6766706682673069 [2022-11-20 12:28:23,986 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 13528 transitions. [2022-11-20 12:28:23,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 13528 transitions. [2022-11-20 12:28:23,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:23,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 13528 transitions. [2022-11-20 12:28:24,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 322.0952380952381) internal successors, (13528), 42 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:24,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 476.0) internal successors, (20468), 43 states have internal predecessors, (20468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:24,047 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 476.0) internal successors, (20468), 43 states have internal predecessors, (20468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:24,048 INFO L175 Difference]: Start difference. First operand has 512 places, 558 transitions, 2326 flow. Second operand 42 states and 13528 transitions. [2022-11-20 12:28:24,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 614 transitions, 3334 flow [2022-11-20 12:28:24,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 614 transitions, 3220 flow, removed 3 selfloop flow, removed 23 redundant places. [2022-11-20 12:28:24,074 INFO L231 Difference]: Finished difference. Result has 530 places, 572 transitions, 2635 flow [2022-11-20 12:28:24,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2635, PETRI_PLACES=530, PETRI_TRANSITIONS=572} [2022-11-20 12:28:24,077 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 111 predicate places. [2022-11-20 12:28:24,077 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 572 transitions, 2635 flow [2022-11-20 12:28:24,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 320.27777777777777) internal successors, (17295), 54 states have internal predecessors, (17295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:24,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:24,081 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:24,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:24,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:28:24,291 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:28:24,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:24,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1513203427, now seen corresponding path program 1 times [2022-11-20 12:28:24,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:24,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350441989] [2022-11-20 12:28:24,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:24,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-20 12:28:25,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:25,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350441989] [2022-11-20 12:28:25,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350441989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:25,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:25,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:28:25,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738773392] [2022-11-20 12:28:25,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:25,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:28:25,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:25,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:28:25,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:28:25,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 476 [2022-11-20 12:28:25,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 572 transitions, 2635 flow. Second operand has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:25,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:25,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 476 [2022-11-20 12:28:25,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:25,918 INFO L130 PetriNetUnfolder]: 151/1150 cut-off events. [2022-11-20 12:28:25,918 INFO L131 PetriNetUnfolder]: For 992/1006 co-relation queries the response was YES. [2022-11-20 12:28:25,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1150 events. 151/1150 cut-off events. For 992/1006 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3114 event pairs, 30 based on Foata normal form. 7/1075 useless extension candidates. Maximal degree in co-relation 2279. Up to 188 conditions per place. [2022-11-20 12:28:25,925 INFO L137 encePairwiseOnDemand]: 473/476 looper letters, 39 selfloop transitions, 2 changer transitions 0/585 dead transitions. [2022-11-20 12:28:25,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 585 transitions, 2754 flow [2022-11-20 12:28:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:28:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:28:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1296 transitions. [2022-11-20 12:28:25,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.907563025210084 [2022-11-20 12:28:25,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1296 transitions. [2022-11-20 12:28:25,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1296 transitions. [2022-11-20 12:28:25,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:25,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1296 transitions. [2022-11-20 12:28:25,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 432.0) internal successors, (1296), 3 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:25,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:25,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:25,934 INFO L175 Difference]: Start difference. First operand has 530 places, 572 transitions, 2635 flow. Second operand 3 states and 1296 transitions. [2022-11-20 12:28:25,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 585 transitions, 2754 flow [2022-11-20 12:28:25,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 585 transitions, 2525 flow, removed 8 selfloop flow, removed 33 redundant places. [2022-11-20 12:28:25,956 INFO L231 Difference]: Finished difference. Result has 500 places, 573 transitions, 2418 flow [2022-11-20 12:28:25,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2406, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2418, PETRI_PLACES=500, PETRI_TRANSITIONS=573} [2022-11-20 12:28:25,958 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 81 predicate places. [2022-11-20 12:28:25,958 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 573 transitions, 2418 flow [2022-11-20 12:28:25,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:25,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:25,959 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:25,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:28:25,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:28:25,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:25,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1636554750, now seen corresponding path program 2 times [2022-11-20 12:28:25,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:25,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323978233] [2022-11-20 12:28:25,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:25,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-20 12:28:26,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:26,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323978233] [2022-11-20 12:28:26,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323978233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:26,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:26,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:28:26,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980128596] [2022-11-20 12:28:26,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:26,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:28:26,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:28:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:28:26,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 476 [2022-11-20 12:28:26,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 573 transitions, 2418 flow. Second operand has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:26,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:26,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 476 [2022-11-20 12:28:26,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:27,559 INFO L130 PetriNetUnfolder]: 166/1215 cut-off events. [2022-11-20 12:28:27,559 INFO L131 PetriNetUnfolder]: For 927/941 co-relation queries the response was YES. [2022-11-20 12:28:27,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 1215 events. 166/1215 cut-off events. For 927/941 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3719 event pairs, 35 based on Foata normal form. 10/1129 useless extension candidates. Maximal degree in co-relation 2282. Up to 206 conditions per place. [2022-11-20 12:28:27,570 INFO L137 encePairwiseOnDemand]: 473/476 looper letters, 41 selfloop transitions, 2 changer transitions 0/587 dead transitions. [2022-11-20 12:28:27,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 587 transitions, 2555 flow [2022-11-20 12:28:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:28:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:28:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1296 transitions. [2022-11-20 12:28:27,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.907563025210084 [2022-11-20 12:28:27,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1296 transitions. [2022-11-20 12:28:27,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1296 transitions. [2022-11-20 12:28:27,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:27,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1296 transitions. [2022-11-20 12:28:27,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 432.0) internal successors, (1296), 3 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:27,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:27,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:27,579 INFO L175 Difference]: Start difference. First operand has 500 places, 573 transitions, 2418 flow. Second operand 3 states and 1296 transitions. [2022-11-20 12:28:27,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 587 transitions, 2555 flow [2022-11-20 12:28:27,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 587 transitions, 2551 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:28:27,602 INFO L231 Difference]: Finished difference. Result has 502 places, 574 transitions, 2428 flow [2022-11-20 12:28:27,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2428, PETRI_PLACES=502, PETRI_TRANSITIONS=574} [2022-11-20 12:28:27,604 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 83 predicate places. [2022-11-20 12:28:27,604 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 574 transitions, 2428 flow [2022-11-20 12:28:27,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:27,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:27,605 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:27,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:28:27,605 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:28:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:27,606 INFO L85 PathProgramCache]: Analyzing trace with hash -587258617, now seen corresponding path program 1 times [2022-11-20 12:28:27,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:27,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679505420] [2022-11-20 12:28:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:27,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2022-11-20 12:28:29,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:29,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679505420] [2022-11-20 12:28:29,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679505420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:29,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:29,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:28:29,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051558412] [2022-11-20 12:28:29,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:29,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:28:29,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:29,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:28:29,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:28:29,417 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 476 [2022-11-20 12:28:29,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 574 transitions, 2428 flow. Second operand has 3 states, 3 states have (on average 410.6666666666667) internal successors, (1232), 3 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:29,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:29,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 476 [2022-11-20 12:28:29,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:30,770 INFO L130 PetriNetUnfolder]: 380/1707 cut-off events. [2022-11-20 12:28:30,770 INFO L131 PetriNetUnfolder]: For 1213/1249 co-relation queries the response was YES. [2022-11-20 12:28:30,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 1707 events. 380/1707 cut-off events. For 1213/1249 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7598 event pairs, 124 based on Foata normal form. 28/1559 useless extension candidates. Maximal degree in co-relation 3358. Up to 523 conditions per place. [2022-11-20 12:28:30,785 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 59 selfloop transitions, 3 changer transitions 1/590 dead transitions. [2022-11-20 12:28:30,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 590 transitions, 2604 flow [2022-11-20 12:28:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:28:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:28:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1274 transitions. [2022-11-20 12:28:30,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8921568627450981 [2022-11-20 12:28:30,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1274 transitions. [2022-11-20 12:28:30,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1274 transitions. [2022-11-20 12:28:30,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:30,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1274 transitions. [2022-11-20 12:28:30,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:30,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:30,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:30,809 INFO L175 Difference]: Start difference. First operand has 502 places, 574 transitions, 2428 flow. Second operand 3 states and 1274 transitions. [2022-11-20 12:28:30,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 590 transitions, 2604 flow [2022-11-20 12:28:30,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 590 transitions, 2601 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:28:30,833 INFO L231 Difference]: Finished difference. Result has 504 places, 575 transitions, 2461 flow [2022-11-20 12:28:30,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2461, PETRI_PLACES=504, PETRI_TRANSITIONS=575} [2022-11-20 12:28:30,835 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 85 predicate places. [2022-11-20 12:28:30,835 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 575 transitions, 2461 flow [2022-11-20 12:28:30,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 410.6666666666667) internal successors, (1232), 3 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:30,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:30,836 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:30,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:28:30,837 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:28:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:30,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1195530161, now seen corresponding path program 2 times [2022-11-20 12:28:30,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:30,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073963829] [2022-11-20 12:28:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:30,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2022-11-20 12:28:32,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:32,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073963829] [2022-11-20 12:28:32,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073963829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:32,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:32,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:28:32,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628728835] [2022-11-20 12:28:32,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:32,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:28:32,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:28:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:28:32,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 476 [2022-11-20 12:28:32,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 575 transitions, 2461 flow. Second operand has 3 states, 3 states have (on average 410.6666666666667) internal successors, (1232), 3 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:32,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:32,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 476 [2022-11-20 12:28:32,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:33,906 INFO L130 PetriNetUnfolder]: 427/1828 cut-off events. [2022-11-20 12:28:33,906 INFO L131 PetriNetUnfolder]: For 1759/1911 co-relation queries the response was YES. [2022-11-20 12:28:33,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3778 conditions, 1828 events. 427/1828 cut-off events. For 1759/1911 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8445 event pairs, 47 based on Foata normal form. 18/1641 useless extension candidates. Maximal degree in co-relation 3745. Up to 509 conditions per place. [2022-11-20 12:28:33,925 INFO L137 encePairwiseOnDemand]: 461/476 looper letters, 57 selfloop transitions, 14 changer transitions 0/598 dead transitions. [2022-11-20 12:28:33,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 598 transitions, 2694 flow [2022-11-20 12:28:33,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:28:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:28:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1274 transitions. [2022-11-20 12:28:33,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8921568627450981 [2022-11-20 12:28:33,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1274 transitions. [2022-11-20 12:28:33,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1274 transitions. [2022-11-20 12:28:33,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:33,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1274 transitions. [2022-11-20 12:28:33,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:33,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:33,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:33,934 INFO L175 Difference]: Start difference. First operand has 504 places, 575 transitions, 2461 flow. Second operand 3 states and 1274 transitions. [2022-11-20 12:28:33,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 598 transitions, 2694 flow [2022-11-20 12:28:33,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 598 transitions, 2691 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:28:33,958 INFO L231 Difference]: Finished difference. Result has 507 places, 588 transitions, 2606 flow [2022-11-20 12:28:33,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2606, PETRI_PLACES=507, PETRI_TRANSITIONS=588} [2022-11-20 12:28:33,960 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 88 predicate places. [2022-11-20 12:28:33,961 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 588 transitions, 2606 flow [2022-11-20 12:28:33,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 410.6666666666667) internal successors, (1232), 3 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:33,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:33,962 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:33,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:28:33,962 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:28:33,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:33,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1809467881, now seen corresponding path program 3 times [2022-11-20 12:28:33,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:33,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508400657] [2022-11-20 12:28:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:33,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2022-11-20 12:28:37,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:37,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508400657] [2022-11-20 12:28:37,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508400657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:37,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:37,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 12:28:37,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420230551] [2022-11-20 12:28:37,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:37,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:28:37,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:37,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:28:37,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:28:37,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 476 [2022-11-20 12:28:37,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 588 transitions, 2606 flow. Second operand has 15 states, 15 states have (on average 340.06666666666666) internal successors, (5101), 15 states have internal predecessors, (5101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:37,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:37,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 476 [2022-11-20 12:28:37,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:39,465 INFO L130 PetriNetUnfolder]: 434/1800 cut-off events. [2022-11-20 12:28:39,465 INFO L131 PetriNetUnfolder]: For 2686/3192 co-relation queries the response was YES. [2022-11-20 12:28:39,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4246 conditions, 1800 events. 434/1800 cut-off events. For 2686/3192 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8115 event pairs, 69 based on Foata normal form. 25/1611 useless extension candidates. Maximal degree in co-relation 4212. Up to 567 conditions per place. [2022-11-20 12:28:39,485 INFO L137 encePairwiseOnDemand]: 410/476 looper letters, 70 selfloop transitions, 65 changer transitions 1/598 dead transitions. [2022-11-20 12:28:39,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 598 transitions, 2940 flow [2022-11-20 12:28:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:28:39,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 12:28:39,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7475 transitions. [2022-11-20 12:28:39,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7138082505729565 [2022-11-20 12:28:39,498 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7475 transitions. [2022-11-20 12:28:39,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7475 transitions. [2022-11-20 12:28:39,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:39,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7475 transitions. [2022-11-20 12:28:39,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 339.77272727272725) internal successors, (7475), 22 states have internal predecessors, (7475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:39,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 476.0) internal successors, (10948), 23 states have internal predecessors, (10948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:39,526 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 476.0) internal successors, (10948), 23 states have internal predecessors, (10948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:39,526 INFO L175 Difference]: Start difference. First operand has 507 places, 588 transitions, 2606 flow. Second operand 22 states and 7475 transitions. [2022-11-20 12:28:39,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 598 transitions, 2940 flow [2022-11-20 12:28:39,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 598 transitions, 2878 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-11-20 12:28:39,616 INFO L231 Difference]: Finished difference. Result has 527 places, 593 transitions, 2751 flow [2022-11-20 12:28:39,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2751, PETRI_PLACES=527, PETRI_TRANSITIONS=593} [2022-11-20 12:28:39,618 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 108 predicate places. [2022-11-20 12:28:39,619 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 593 transitions, 2751 flow [2022-11-20 12:28:39,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 340.06666666666666) internal successors, (5101), 15 states have internal predecessors, (5101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:39,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:39,620 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:39,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:28:39,621 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:28:39,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:39,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1863779739, now seen corresponding path program 1 times [2022-11-20 12:28:39,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:39,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714557308] [2022-11-20 12:28:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:39,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2022-11-20 12:28:43,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:43,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714557308] [2022-11-20 12:28:43,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714557308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:43,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:43,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-20 12:28:43,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598367239] [2022-11-20 12:28:43,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:43,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:28:43,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:43,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:28:43,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:28:43,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 476 [2022-11-20 12:28:43,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 593 transitions, 2751 flow. Second operand has 16 states, 16 states have (on average 339.6875) internal successors, (5435), 16 states have internal predecessors, (5435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:43,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:43,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 476 [2022-11-20 12:28:43,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:45,337 INFO L130 PetriNetUnfolder]: 409/1797 cut-off events. [2022-11-20 12:28:45,338 INFO L131 PetriNetUnfolder]: For 2342/2466 co-relation queries the response was YES. [2022-11-20 12:28:45,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 1797 events. 409/1797 cut-off events. For 2342/2466 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8124 event pairs, 98 based on Foata normal form. 15/1587 useless extension candidates. Maximal degree in co-relation 4061. Up to 561 conditions per place. [2022-11-20 12:28:45,352 INFO L137 encePairwiseOnDemand]: 416/476 looper letters, 76 selfloop transitions, 53 changer transitions 6/597 dead transitions. [2022-11-20 12:28:45,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 597 transitions, 3031 flow [2022-11-20 12:28:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:28:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 12:28:45,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7467 transitions. [2022-11-20 12:28:45,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.713044308632544 [2022-11-20 12:28:45,363 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7467 transitions. [2022-11-20 12:28:45,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7467 transitions. [2022-11-20 12:28:45,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:45,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7467 transitions. [2022-11-20 12:28:45,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 339.40909090909093) internal successors, (7467), 22 states have internal predecessors, (7467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:45,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 476.0) internal successors, (10948), 23 states have internal predecessors, (10948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:45,390 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 476.0) internal successors, (10948), 23 states have internal predecessors, (10948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:45,390 INFO L175 Difference]: Start difference. First operand has 527 places, 593 transitions, 2751 flow. Second operand 22 states and 7467 transitions. [2022-11-20 12:28:45,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 597 transitions, 3031 flow [2022-11-20 12:28:45,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 597 transitions, 2921 flow, removed 7 selfloop flow, removed 20 redundant places. [2022-11-20 12:28:45,417 INFO L231 Difference]: Finished difference. Result has 529 places, 591 transitions, 2744 flow [2022-11-20 12:28:45,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2641, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2744, PETRI_PLACES=529, PETRI_TRANSITIONS=591} [2022-11-20 12:28:45,418 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 110 predicate places. [2022-11-20 12:28:45,418 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 591 transitions, 2744 flow [2022-11-20 12:28:45,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 339.6875) internal successors, (5435), 16 states have internal predecessors, (5435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:45,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:45,420 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:45,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:28:45,420 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:28:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash -493282254, now seen corresponding path program 1 times [2022-11-20 12:28:45,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:45,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657311894] [2022-11-20 12:28:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:45,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2022-11-20 12:29:08,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:08,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657311894] [2022-11-20 12:29:08,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657311894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:29:08,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821113589] [2022-11-20 12:29:08,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:08,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:29:08,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:29:08,198 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:29:08,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:29:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:09,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 12:29:09,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:29:14,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:29:14,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 146 treesize of output 335 [2022-11-20 12:29:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-20 12:29:15,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:29:57,311 WARN L233 SmtUtils]: Spent 34.25s on a formula simplification. DAG size of input: 72 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:29:58,446 INFO L321 Elim1Store]: treesize reduction 15, result has 92.6 percent of original size [2022-11-20 12:29:58,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 703 treesize of output 683 [2022-11-20 12:30:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-20 12:30:01,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821113589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:30:01,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:30:01,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 15, 10] total 38 [2022-11-20 12:30:01,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618516660] [2022-11-20 12:30:01,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:30:01,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 12:30:01,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:01,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 12:30:01,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 12:30:01,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 476 [2022-11-20 12:30:01,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 591 transitions, 2744 flow. Second operand has 38 states, 38 states have (on average 193.89473684210526) internal successors, (7368), 38 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:01,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:01,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 476 [2022-11-20 12:30:01,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:10,586 INFO L130 PetriNetUnfolder]: 649/2557 cut-off events. [2022-11-20 12:30:10,586 INFO L131 PetriNetUnfolder]: For 2518/2597 co-relation queries the response was YES. [2022-11-20 12:30:10,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5929 conditions, 2557 events. 649/2557 cut-off events. For 2518/2597 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15221 event pairs, 75 based on Foata normal form. 5/2250 useless extension candidates. Maximal degree in co-relation 5894. Up to 458 conditions per place. [2022-11-20 12:30:10,609 INFO L137 encePairwiseOnDemand]: 370/476 looper letters, 427 selfloop transitions, 132 changer transitions 7/741 dead transitions. [2022-11-20 12:30:10,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 741 transitions, 4406 flow [2022-11-20 12:30:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 12:30:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 12:30:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 7619 transitions. [2022-11-20 12:30:10,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4104180133591898 [2022-11-20 12:30:10,621 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 7619 transitions. [2022-11-20 12:30:10,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 7619 transitions. [2022-11-20 12:30:10,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:10,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 7619 transitions. [2022-11-20 12:30:10,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 195.35897435897436) internal successors, (7619), 39 states have internal predecessors, (7619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:10,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 476.0) internal successors, (19040), 40 states have internal predecessors, (19040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:10,659 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 476.0) internal successors, (19040), 40 states have internal predecessors, (19040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:10,659 INFO L175 Difference]: Start difference. First operand has 529 places, 591 transitions, 2744 flow. Second operand 39 states and 7619 transitions. [2022-11-20 12:30:10,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 741 transitions, 4406 flow [2022-11-20 12:30:10,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 741 transitions, 4258 flow, removed 21 selfloop flow, removed 22 redundant places. [2022-11-20 12:30:10,691 INFO L231 Difference]: Finished difference. Result has 552 places, 627 transitions, 3101 flow [2022-11-20 12:30:10,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3101, PETRI_PLACES=552, PETRI_TRANSITIONS=627} [2022-11-20 12:30:10,693 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 133 predicate places. [2022-11-20 12:30:10,693 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 627 transitions, 3101 flow [2022-11-20 12:30:10,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 193.89473684210526) internal successors, (7368), 38 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:10,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:10,695 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:10,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:30:10,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:30:10,907 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:30:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:10,907 INFO L85 PathProgramCache]: Analyzing trace with hash 140572076, now seen corresponding path program 2 times [2022-11-20 12:30:10,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:10,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121232860] [2022-11-20 12:30:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:10,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-20 12:30:32,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:32,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121232860] [2022-11-20 12:30:32,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121232860] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:30:32,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143001681] [2022-11-20 12:30:32,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:30:32,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:32,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:30:32,393 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:30:32,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6008010-e6b2-4998-b346-8fcef093c741/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:30:33,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:30:33,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:30:33,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-20 12:30:33,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:30:40,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:30:40,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 60 [2022-11-20 12:30:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-20 12:30:41,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:31:07,774 WARN L233 SmtUtils]: Spent 22.23s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:31:46,341 WARN L233 SmtUtils]: Spent 36.54s on a formula simplification that was a NOOP. DAG size: 1432 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 12:31:46,343 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:31:46,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 0 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 1300 treesize of output 4354