./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-lamport.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_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/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_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/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_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/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 dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c --- 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 11:54:36,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:54:36,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:54:36,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:54:36,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:54:36,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:54:36,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:54:36,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:54:36,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:54:36,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:54:36,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:54:36,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:54:36,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:54:36,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:54:36,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:54:36,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:54:36,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:54:36,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:54:36,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:54:36,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:54:36,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:54:36,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:54:36,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:54:36,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:54:36,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:54:36,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:54:36,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:54:36,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:54:36,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:54:36,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:54:36,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:54:36,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:54:36,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:54:36,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:54:36,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:54:36,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:54:36,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:54:36,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:54:36,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:54:36,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:54:36,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:54:36,231 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:54:36,251 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:54:36,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:54:36,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:54:36,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:54:36,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:54:36,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:54:36,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:54:36,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:54:36,254 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:54:36,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:54:36,255 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:54:36,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:54:36,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:54:36,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:54:36,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:54:36,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:54:36,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:54:36,257 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:54:36,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:54:36,257 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:54:36,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:54:36,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:54:36,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:54:36,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:54:36,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:54:36,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:54:36,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:54:36,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:54:36,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:54:36,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:54:36,260 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:54:36,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:54:36,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:54:36,261 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_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c [2022-11-20 11:54:36,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:54:36,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:54:36,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:54:36,571 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:54:36,572 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:54:36,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-11-20 11:54:39,561 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:54:39,798 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:54:39,799 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-11-20 11:54:39,806 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/data/0e5455127/4de63e9867d64655b8d56c3c4ad11014/FLAG2b1841e37 [2022-11-20 11:54:39,821 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/data/0e5455127/4de63e9867d64655b8d56c3c4ad11014 [2022-11-20 11:54:39,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:54:39,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:54:39,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:54:39,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:54:39,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:54:39,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:39" (1/1) ... [2022-11-20 11:54:39,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@89dd3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:39, skipping insertion in model container [2022-11-20 11:54:39,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:39" (1/1) ... [2022-11-20 11:54:39,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:54:39,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:54:40,034 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_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-11-20 11:54:40,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:54:40,064 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:54:40,089 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_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-11-20 11:54:40,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:54:40,107 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:54:40,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40 WrapperNode [2022-11-20 11:54:40,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:54:40,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:54:40,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:54:40,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:54:40,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40" (1/1) ... [2022-11-20 11:54:40,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40" (1/1) ... [2022-11-20 11:54:40,178 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 235 [2022-11-20 11:54:40,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:54:40,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:54:40,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:54:40,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:54:40,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40" (1/1) ... [2022-11-20 11:54:40,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40" (1/1) ... [2022-11-20 11:54:40,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40" (1/1) ... [2022-11-20 11:54:40,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40" (1/1) ... [2022-11-20 11:54:40,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40" (1/1) ... [2022-11-20 11:54:40,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40" (1/1) ... [2022-11-20 11:54:40,205 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40" (1/1) ... [2022-11-20 11:54:40,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40" (1/1) ... [2022-11-20 11:54:40,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:54:40,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:54:40,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:54:40,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:54:40,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40" (1/1) ... [2022-11-20 11:54:40,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:54:40,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:40,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:54:40,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:54:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:54:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:54:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:54:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:54:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:54:40,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:54:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:54:40,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:54:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:54:40,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:54:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:54:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:54:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:54:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:54:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:54:40,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:54:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:54:40,320 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 11:54:40,450 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:54:40,452 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:54:40,827 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:54:41,019 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:54:41,028 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:54:41,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:41 BoogieIcfgContainer [2022-11-20 11:54:41,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:54:41,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:54:41,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:54:41,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:54:41,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:54:39" (1/3) ... [2022-11-20 11:54:41,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b183a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:41, skipping insertion in model container [2022-11-20 11:54:41,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:40" (2/3) ... [2022-11-20 11:54:41,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b183a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:41, skipping insertion in model container [2022-11-20 11:54:41,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:41" (3/3) ... [2022-11-20 11:54:41,048 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2022-11-20 11:54:41,059 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:54:41,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:54:41,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:54:41,068 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:54:41,173 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:54:41,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 186 transitions, 396 flow [2022-11-20 11:54:41,319 INFO L130 PetriNetUnfolder]: 7/183 cut-off events. [2022-11-20 11:54:41,326 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:54:41,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 7/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2022-11-20 11:54:41,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 186 transitions, 396 flow [2022-11-20 11:54:41,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 172 transitions, 362 flow [2022-11-20 11:54:41,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:54:41,364 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;@a6de180, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:54:41,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 11:54:41,410 INFO L130 PetriNetUnfolder]: 7/171 cut-off events. [2022-11-20 11:54:41,411 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:54:41,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:41,412 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] [2022-11-20 11:54:41,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:54:41,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:41,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1585459092, now seen corresponding path program 1 times [2022-11-20 11:54:41,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:41,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402491820] [2022-11-20 11:54:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:41,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:41,817 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 11:54:41,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:41,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402491820] [2022-11-20 11:54:41,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402491820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:41,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:41,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:54:41,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834622313] [2022-11-20 11:54:41,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:41,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:54:41,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:41,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:54:41,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:54:41,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 186 [2022-11-20 11:54:41,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 362 flow. Second operand has 2 states, 2 states have (on average 171.0) internal successors, (342), 2 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 11:54:41,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:41,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 186 [2022-11-20 11:54:41,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:42,111 INFO L130 PetriNetUnfolder]: 215/676 cut-off events. [2022-11-20 11:54:42,111 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2022-11-20 11:54:42,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 676 events. 215/676 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3340 event pairs, 214 based on Foata normal form. 6/667 useless extension candidates. Maximal degree in co-relation 948. Up to 370 conditions per place. [2022-11-20 11:54:42,119 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 17 selfloop transitions, 0 changer transitions 5/166 dead transitions. [2022-11-20 11:54:42,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 166 transitions, 384 flow [2022-11-20 11:54:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:54:42,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:54:42,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 347 transitions. [2022-11-20 11:54:42,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9327956989247311 [2022-11-20 11:54:42,134 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 347 transitions. [2022-11-20 11:54:42,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 347 transitions. [2022-11-20 11:54:42,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:42,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 347 transitions. [2022-11-20 11:54:42,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 11:54:42,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 11:54:42,148 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 11:54:42,150 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 362 flow. Second operand 2 states and 347 transitions. [2022-11-20 11:54:42,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 166 transitions, 384 flow [2022-11-20 11:54:42,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 166 transitions, 372 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:54:42,159 INFO L231 Difference]: Finished difference. Result has 170 places, 161 transitions, 328 flow [2022-11-20 11:54:42,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2022-11-20 11:54:42,165 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, -5 predicate places. [2022-11-20 11:54:42,165 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 328 flow [2022-11-20 11:54:42,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 171.0) internal successors, (342), 2 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 11:54:42,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:42,166 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] [2022-11-20 11:54:42,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:54:42,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:54:42,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:42,168 INFO L85 PathProgramCache]: Analyzing trace with hash -547621929, now seen corresponding path program 1 times [2022-11-20 11:54:42,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:42,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896085080] [2022-11-20 11:54:42,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:42,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:43,001 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 11:54:43,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:43,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896085080] [2022-11-20 11:54:43,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896085080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:43,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:43,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:54:43,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325673606] [2022-11-20 11:54:43,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:43,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:54:43,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:43,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:54:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:54:43,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 186 [2022-11-20 11:54:43,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 328 flow. Second operand has 8 states, 8 states have (on average 127.125) internal successors, (1017), 8 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:54:43,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:43,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 186 [2022-11-20 11:54:43,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:43,540 INFO L130 PetriNetUnfolder]: 312/872 cut-off events. [2022-11-20 11:54:43,540 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-20 11:54:43,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 872 events. 312/872 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4412 event pairs, 311 based on Foata normal form. 1/868 useless extension candidates. Maximal degree in co-relation 1487. Up to 554 conditions per place. [2022-11-20 11:54:43,550 INFO L137 encePairwiseOnDemand]: 176/186 looper letters, 51 selfloop transitions, 6 changer transitions 8/173 dead transitions. [2022-11-20 11:54:43,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 173 transitions, 482 flow [2022-11-20 11:54:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:54:43,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:54:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1155 transitions. [2022-11-20 11:54:43,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6899641577060932 [2022-11-20 11:54:43,560 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1155 transitions. [2022-11-20 11:54:43,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1155 transitions. [2022-11-20 11:54:43,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:43,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1155 transitions. [2022-11-20 11:54:43,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.33333333333334) internal successors, (1155), 9 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states 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 11:54:43,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 11:54:43,574 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 11:54:43,574 INFO L175 Difference]: Start difference. First operand has 170 places, 161 transitions, 328 flow. Second operand 9 states and 1155 transitions. [2022-11-20 11:54:43,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 173 transitions, 482 flow [2022-11-20 11:54:43,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:54:43,582 INFO L231 Difference]: Finished difference. Result has 177 places, 162 transitions, 354 flow [2022-11-20 11:54:43,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=354, PETRI_PLACES=177, PETRI_TRANSITIONS=162} [2022-11-20 11:54:43,584 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 2 predicate places. [2022-11-20 11:54:43,584 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 162 transitions, 354 flow [2022-11-20 11:54:43,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 127.125) internal successors, (1017), 8 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:54:43,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:43,586 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:43,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:54:43,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:54:43,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2104651227, now seen corresponding path program 1 times [2022-11-20 11:54:43,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:43,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081515479] [2022-11-20 11:54:43,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:43,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:45,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:45,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081515479] [2022-11-20 11:54:45,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081515479] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:45,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731487367] [2022-11-20 11:54:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:45,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:45,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:45,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:45,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:54:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:45,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 11:54:45,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:46,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 11:54:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:46,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:46,598 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-20 11:54:46,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 11:54:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:47,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731487367] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:47,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:47,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 15] total 39 [2022-11-20 11:54:47,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402784555] [2022-11-20 11:54:47,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:47,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-20 11:54:47,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:47,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-20 11:54:47,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 11:54:47,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 186 [2022-11-20 11:54:47,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 162 transitions, 354 flow. Second operand has 39 states, 39 states have (on average 101.12820512820512) internal successors, (3944), 39 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states 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 11:54:47,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:47,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 186 [2022-11-20 11:54:47,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:53,621 INFO L130 PetriNetUnfolder]: 2351/5367 cut-off events. [2022-11-20 11:54:53,621 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2022-11-20 11:54:53,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9414 conditions, 5367 events. 2351/5367 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 44338 event pairs, 958 based on Foata normal form. 4/5306 useless extension candidates. Maximal degree in co-relation 9406. Up to 1216 conditions per place. [2022-11-20 11:54:53,658 INFO L137 encePairwiseOnDemand]: 149/186 looper letters, 286 selfloop transitions, 117 changer transitions 70/557 dead transitions. [2022-11-20 11:54:53,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 557 transitions, 2170 flow [2022-11-20 11:54:53,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-20 11:54:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-11-20 11:54:53,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 6588 transitions. [2022-11-20 11:54:53,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5622119815668203 [2022-11-20 11:54:53,680 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 6588 transitions. [2022-11-20 11:54:53,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 6588 transitions. [2022-11-20 11:54:53,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:53,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 6588 transitions. [2022-11-20 11:54:53,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 104.57142857142857) internal successors, (6588), 63 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states 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 11:54:53,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 186.0) internal successors, (11904), 64 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states 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 11:54:53,729 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 186.0) internal successors, (11904), 64 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states 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 11:54:53,729 INFO L175 Difference]: Start difference. First operand has 177 places, 162 transitions, 354 flow. Second operand 63 states and 6588 transitions. [2022-11-20 11:54:53,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 557 transitions, 2170 flow [2022-11-20 11:54:53,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 557 transitions, 2148 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-11-20 11:54:53,741 INFO L231 Difference]: Finished difference. Result has 270 places, 289 transitions, 1148 flow [2022-11-20 11:54:53,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=1148, PETRI_PLACES=270, PETRI_TRANSITIONS=289} [2022-11-20 11:54:53,743 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 95 predicate places. [2022-11-20 11:54:53,743 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 289 transitions, 1148 flow [2022-11-20 11:54:53,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 101.12820512820512) internal successors, (3944), 39 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states 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 11:54:53,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:53,745 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:53,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:53,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:53,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:54:53,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:53,953 INFO L85 PathProgramCache]: Analyzing trace with hash -776263733, now seen corresponding path program 2 times [2022-11-20 11:54:53,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:53,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406669713] [2022-11-20 11:54:53,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:53,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:54:54,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:54,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406669713] [2022-11-20 11:54:54,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406669713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:54,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:54,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:54:54,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501277762] [2022-11-20 11:54:54,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:54,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:54:54,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:54,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:54:54,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:54:54,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 186 [2022-11-20 11:54:54,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 289 transitions, 1148 flow. Second operand has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states 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 11:54:54,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:54,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 186 [2022-11-20 11:54:54,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:56,513 INFO L130 PetriNetUnfolder]: 3685/8188 cut-off events. [2022-11-20 11:54:56,514 INFO L131 PetriNetUnfolder]: For 28985/29135 co-relation queries the response was YES. [2022-11-20 11:54:56,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23867 conditions, 8188 events. 3685/8188 cut-off events. For 28985/29135 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 72276 event pairs, 645 based on Foata normal form. 96/8111 useless extension candidates. Maximal degree in co-relation 23821. Up to 1996 conditions per place. [2022-11-20 11:54:56,605 INFO L137 encePairwiseOnDemand]: 176/186 looper letters, 447 selfloop transitions, 18 changer transitions 0/629 dead transitions. [2022-11-20 11:54:56,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 629 transitions, 3832 flow [2022-11-20 11:54:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:54:56,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:54:56,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1444 transitions. [2022-11-20 11:54:56,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8626045400238949 [2022-11-20 11:54:56,609 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1444 transitions. [2022-11-20 11:54:56,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1444 transitions. [2022-11-20 11:54:56,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:56,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1444 transitions. [2022-11-20 11:54:56,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 160.44444444444446) internal successors, (1444), 9 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states 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 11:54:56,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 11:54:56,618 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 11:54:56,618 INFO L175 Difference]: Start difference. First operand has 270 places, 289 transitions, 1148 flow. Second operand 9 states and 1444 transitions. [2022-11-20 11:54:56,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 629 transitions, 3832 flow [2022-11-20 11:54:56,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 629 transitions, 3741 flow, removed 35 selfloop flow, removed 22 redundant places. [2022-11-20 11:54:56,763 INFO L231 Difference]: Finished difference. Result has 248 places, 303 transitions, 1195 flow [2022-11-20 11:54:56,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1195, PETRI_PLACES=248, PETRI_TRANSITIONS=303} [2022-11-20 11:54:56,764 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 73 predicate places. [2022-11-20 11:54:56,764 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 303 transitions, 1195 flow [2022-11-20 11:54:56,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states 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 11:54:56,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:56,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:56,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:54:56,766 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:54:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2086577769, now seen corresponding path program 3 times [2022-11-20 11:54:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:56,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612833961] [2022-11-20 11:54:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:56,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:54:57,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:57,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612833961] [2022-11-20 11:54:57,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612833961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:57,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:57,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:57,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374895606] [2022-11-20 11:54:57,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:57,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:54:57,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:57,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:54:57,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:54:57,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 186 [2022-11-20 11:54:57,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 303 transitions, 1195 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states 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 11:54:57,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:57,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 186 [2022-11-20 11:54:57,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:58,072 INFO L130 PetriNetUnfolder]: 2384/6130 cut-off events. [2022-11-20 11:54:58,073 INFO L131 PetriNetUnfolder]: For 16197/16302 co-relation queries the response was YES. [2022-11-20 11:54:58,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17545 conditions, 6130 events. 2384/6130 cut-off events. For 16197/16302 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 56773 event pairs, 1131 based on Foata normal form. 35/5917 useless extension candidates. Maximal degree in co-relation 17506. Up to 3586 conditions per place. [2022-11-20 11:54:58,131 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 138 selfloop transitions, 2 changer transitions 0/328 dead transitions. [2022-11-20 11:54:58,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 328 transitions, 1619 flow [2022-11-20 11:54:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:54:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:54:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-11-20 11:54:58,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9032258064516129 [2022-11-20 11:54:58,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-11-20 11:54:58,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-11-20 11:54:58,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:58,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-11-20 11:54:58,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 11:54:58,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 11:54:58,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 11:54:58,141 INFO L175 Difference]: Start difference. First operand has 248 places, 303 transitions, 1195 flow. Second operand 3 states and 504 transitions. [2022-11-20 11:54:58,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 328 transitions, 1619 flow [2022-11-20 11:54:58,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 328 transitions, 1619 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:54:58,279 INFO L231 Difference]: Finished difference. Result has 251 places, 303 transitions, 1203 flow [2022-11-20 11:54:58,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1203, PETRI_PLACES=251, PETRI_TRANSITIONS=303} [2022-11-20 11:54:58,283 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 76 predicate places. [2022-11-20 11:54:58,284 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 303 transitions, 1203 flow [2022-11-20 11:54:58,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states 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 11:54:58,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:58,285 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:58,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:54:58,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:54:58,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:58,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1562097441, now seen corresponding path program 4 times [2022-11-20 11:54:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:58,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219099441] [2022-11-20 11:54:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:58,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:59,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:59,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219099441] [2022-11-20 11:54:59,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219099441] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:59,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148968316] [2022-11-20 11:54:59,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:54:59,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:59,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:59,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:59,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:54:59,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:54:59,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:54:59,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 11:54:59,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:00,807 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-20 11:55:00,808 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 34 treesize of output 13 [2022-11-20 11:55:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:01,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:55:01,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:55:01,793 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 62 treesize of output 66 [2022-11-20 11:55:02,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:02,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148968316] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:55:02,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:55:02,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 47 [2022-11-20 11:55:02,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527878013] [2022-11-20 11:55:02,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:55:02,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-20 11:55:02,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:55:02,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-20 11:55:02,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1896, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 11:55:02,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 186 [2022-11-20 11:55:02,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 303 transitions, 1203 flow. Second operand has 47 states, 47 states have (on average 100.68085106382979) internal successors, (4732), 47 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states 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 11:55:02,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:55:02,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 186 [2022-11-20 11:55:02,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:55:14,906 INFO L130 PetriNetUnfolder]: 9447/21839 cut-off events. [2022-11-20 11:55:14,907 INFO L131 PetriNetUnfolder]: For 55432/55620 co-relation queries the response was YES. [2022-11-20 11:55:15,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63397 conditions, 21839 events. 9447/21839 cut-off events. For 55432/55620 co-relation queries the response was YES. Maximal size of possible extension queue 1506. Compared 239874 event pairs, 2215 based on Foata normal form. 24/21339 useless extension candidates. Maximal degree in co-relation 63356. Up to 4000 conditions per place. [2022-11-20 11:55:15,091 INFO L137 encePairwiseOnDemand]: 139/186 looper letters, 487 selfloop transitions, 340 changer transitions 26/951 dead transitions. [2022-11-20 11:55:15,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 951 transitions, 6071 flow [2022-11-20 11:55:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-20 11:55:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2022-11-20 11:55:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 8493 transitions. [2022-11-20 11:55:15,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5568450039339103 [2022-11-20 11:55:15,109 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 8493 transitions. [2022-11-20 11:55:15,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 8493 transitions. [2022-11-20 11:55:15,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:55:15,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 8493 transitions. [2022-11-20 11:55:15,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 103.57317073170732) internal successors, (8493), 82 states have internal predecessors, (8493), 0 states have call successors, (0), 0 states 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 11:55:15,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 186.0) internal successors, (15438), 83 states have internal predecessors, (15438), 0 states have call successors, (0), 0 states 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 11:55:15,167 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 186.0) internal successors, (15438), 83 states have internal predecessors, (15438), 0 states have call successors, (0), 0 states 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 11:55:15,167 INFO L175 Difference]: Start difference. First operand has 251 places, 303 transitions, 1203 flow. Second operand 82 states and 8493 transitions. [2022-11-20 11:55:15,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 951 transitions, 6071 flow [2022-11-20 11:55:16,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 951 transitions, 6067 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:55:16,201 INFO L231 Difference]: Finished difference. Result has 360 places, 642 transitions, 4604 flow [2022-11-20 11:55:16,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=4604, PETRI_PLACES=360, PETRI_TRANSITIONS=642} [2022-11-20 11:55:16,203 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 185 predicate places. [2022-11-20 11:55:16,203 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 642 transitions, 4604 flow [2022-11-20 11:55:16,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 100.68085106382979) internal successors, (4732), 47 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states 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 11:55:16,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:55:16,206 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:16,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 11:55:16,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:55:16,411 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:55:16,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1319769829, now seen corresponding path program 5 times [2022-11-20 11:55:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:55:16,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155676657] [2022-11-20 11:55:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:55:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:18,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:55:18,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155676657] [2022-11-20 11:55:18,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155676657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:55:18,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617673627] [2022-11-20 11:55:18,083 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:55:18,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:55:18,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:55:18,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:55:18,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:55:18,219 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:55:18,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:55:18,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 11:55:18,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:19,390 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-20 11:55:19,390 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2022-11-20 11:55:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:19,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:55:19,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:55:19,848 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2022-11-20 11:55:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:20,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617673627] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:55:20,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:55:20,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 19] total 54 [2022-11-20 11:55:20,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22352188] [2022-11-20 11:55:20,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:55:20,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-20 11:55:20,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:55:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-20 11:55:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=2432, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 11:55:20,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 186 [2022-11-20 11:55:20,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 642 transitions, 4604 flow. Second operand has 54 states, 54 states have (on average 102.0925925925926) internal successors, (5513), 54 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states 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 11:55:20,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:55:20,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 186 [2022-11-20 11:55:20,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:55:40,712 INFO L130 PetriNetUnfolder]: 21555/52551 cut-off events. [2022-11-20 11:55:40,713 INFO L131 PetriNetUnfolder]: For 294324/295820 co-relation queries the response was YES. [2022-11-20 11:55:41,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224878 conditions, 52551 events. 21555/52551 cut-off events. For 294324/295820 co-relation queries the response was YES. Maximal size of possible extension queue 3606. Compared 674985 event pairs, 1707 based on Foata normal form. 358/52175 useless extension candidates. Maximal degree in co-relation 224807. Up to 12079 conditions per place. [2022-11-20 11:55:41,611 INFO L137 encePairwiseOnDemand]: 137/186 looper letters, 996 selfloop transitions, 1041 changer transitions 369/2506 dead transitions. [2022-11-20 11:55:41,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 2506 transitions, 26024 flow [2022-11-20 11:55:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-20 11:55:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2022-11-20 11:55:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 10072 transitions. [2022-11-20 11:55:41,637 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5760695493022192 [2022-11-20 11:55:41,637 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 10072 transitions. [2022-11-20 11:55:41,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 10072 transitions. [2022-11-20 11:55:41,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:55:41,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 10072 transitions. [2022-11-20 11:55:41,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 95 states, 94 states have (on average 107.14893617021276) internal successors, (10072), 94 states have internal predecessors, (10072), 0 states have call successors, (0), 0 states 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 11:55:41,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 95 states, 95 states have (on average 186.0) internal successors, (17670), 95 states have internal predecessors, (17670), 0 states have call successors, (0), 0 states 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 11:55:41,697 INFO L81 ComplementDD]: Finished complementDD. Result has 95 states, 95 states have (on average 186.0) internal successors, (17670), 95 states have internal predecessors, (17670), 0 states have call successors, (0), 0 states 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 11:55:41,697 INFO L175 Difference]: Start difference. First operand has 360 places, 642 transitions, 4604 flow. Second operand 94 states and 10072 transitions. [2022-11-20 11:55:41,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 2506 transitions, 26024 flow [2022-11-20 11:56:11,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 2506 transitions, 23447 flow, removed 1271 selfloop flow, removed 24 redundant places. [2022-11-20 11:56:11,238 INFO L231 Difference]: Finished difference. Result has 469 places, 1565 transitions, 15728 flow [2022-11-20 11:56:11,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=4011, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=94, PETRI_FLOW=15728, PETRI_PLACES=469, PETRI_TRANSITIONS=1565} [2022-11-20 11:56:11,239 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 294 predicate places. [2022-11-20 11:56:11,239 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 1565 transitions, 15728 flow [2022-11-20 11:56:11,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 102.0925925925926) internal successors, (5513), 54 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states 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 11:56:11,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:56:11,241 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:56:11,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:56:11,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:56:11,448 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:56:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1774833355, now seen corresponding path program 6 times [2022-11-20 11:56:11,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:11,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118089894] [2022-11-20 11:56:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:56:12,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:12,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118089894] [2022-11-20 11:56:12,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118089894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:56:12,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112481106] [2022-11-20 11:56:12,532 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:56:12,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:56:12,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:56:12,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:56:12,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7bec74-60fb-4210-82e3-ffe393b0fdfb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:56:12,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-20 11:56:12,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:56:12,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:56:12,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:56:13,009 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:56:13,010 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-11-20 11:56:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:56:13,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:56:13,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112481106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:13,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:56:13,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21] total 28 [2022-11-20 11:56:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772282188] [2022-11-20 11:56:13,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:13,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:56:13,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:13,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:56:13,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:56:13,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 186 [2022-11-20 11:56:13,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 1565 transitions, 15728 flow. Second operand has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states 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 11:56:13,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:56:13,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 186 [2022-11-20 11:56:13,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand