./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe026_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe026_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg --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 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:56:00,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:56:00,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:56:00,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:56:00,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:56:00,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:56:00,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:56:00,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:56:00,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:56:00,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:56:00,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:56:00,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:56:00,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:56:00,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:56:00,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:56:00,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:56:00,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:56:00,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:56:00,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:56:00,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:56:00,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:56:00,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:56:00,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:56:00,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:56:00,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:56:00,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:56:00,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:56:00,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:56:00,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:56:00,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:56:00,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:56:00,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:56:00,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:56:00,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:56:00,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:56:00,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:56:00,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:56:00,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:56:00,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:56:00,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:56:00,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:56:00,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:56:00,298 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:56:00,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:56:00,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:56:00,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:56:00,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:56:00,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:56:00,305 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:56:00,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:56:00,306 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:56:00,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:56:00,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:56:00,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:56:00,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:56:00,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:56:00,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:56:00,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:56:00,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:56:00,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:56:00,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:56:00,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:56:00,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:56:00,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:56:00,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:56:00,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:56:00,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:56:00,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:56:00,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:56:00,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:56:00,311 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:56:00,313 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:56:00,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:56:00,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:56:00,314 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_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d [2021-10-28 08:56:00,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:56:00,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:56:00,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:56:00,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:56:00,683 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:56:00,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/pthread-wmm/safe026_tso.i [2021-10-28 08:56:00,764 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/data/153e5e474/c16ad500f0794326a1c757c6d5d6c5f0/FLAG68051a34c [2021-10-28 08:56:01,394 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:56:01,395 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/sv-benchmarks/c/pthread-wmm/safe026_tso.i [2021-10-28 08:56:01,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/data/153e5e474/c16ad500f0794326a1c757c6d5d6c5f0/FLAG68051a34c [2021-10-28 08:56:01,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/data/153e5e474/c16ad500f0794326a1c757c6d5d6c5f0 [2021-10-28 08:56:01,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:56:01,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:56:01,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:56:01,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:56:01,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:56:01,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:56:01" (1/1) ... [2021-10-28 08:56:01,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd3fbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:01, skipping insertion in model container [2021-10-28 08:56:01,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:56:01" (1/1) ... [2021-10-28 08:56:01,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:56:01,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:56:01,907 WARN L228 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_34fddf8f-621b-406e-81c2-4a6012feb0ea/sv-benchmarks/c/pthread-wmm/safe026_tso.i[945,958] [2021-10-28 08:56:02,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:56:02,068 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:56:02,080 WARN L228 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_34fddf8f-621b-406e-81c2-4a6012feb0ea/sv-benchmarks/c/pthread-wmm/safe026_tso.i[945,958] [2021-10-28 08:56:02,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:56:02,185 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:56:02,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:02 WrapperNode [2021-10-28 08:56:02,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:56:02,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:56:02,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:56:02,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:56:02,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:02" (1/1) ... [2021-10-28 08:56:02,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:02" (1/1) ... [2021-10-28 08:56:02,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:56:02,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:56:02,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:56:02,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:56:02,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:02" (1/1) ... [2021-10-28 08:56:02,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:02" (1/1) ... [2021-10-28 08:56:02,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:02" (1/1) ... [2021-10-28 08:56:02,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:02" (1/1) ... [2021-10-28 08:56:02,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:02" (1/1) ... [2021-10-28 08:56:02,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:02" (1/1) ... [2021-10-28 08:56:02,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:02" (1/1) ... [2021-10-28 08:56:02,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:56:02,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:56:02,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:56:02,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:56:02,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:02" (1/1) ... [2021-10-28 08:56:02,337 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:56:02,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:56:02,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:56:02,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:56:02,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:56:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 08:56:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:56:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:56:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 08:56:02,401 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 08:56:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 08:56:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 08:56:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 08:56:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 08:56:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:56:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 08:56:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:56:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:56:02,405 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 08:56:02,777 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:56:02,777 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 08:56:02,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:56:02 BoogieIcfgContainer [2021-10-28 08:56:02,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:56:02,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:56:02,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:56:02,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:56:02,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:56:01" (1/3) ... [2021-10-28 08:56:02,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1442e1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:56:02, skipping insertion in model container [2021-10-28 08:56:02,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:56:02" (2/3) ... [2021-10-28 08:56:02,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1442e1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:56:02, skipping insertion in model container [2021-10-28 08:56:02,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:56:02" (3/3) ... [2021-10-28 08:56:02,791 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2021-10-28 08:56:02,796 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 08:56:02,796 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:56:02,796 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:56:02,797 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 08:56:02,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,852 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,856 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,857 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,858 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,858 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,858 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,860 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,860 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,862 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,863 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,863 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,863 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,864 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,876 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,877 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,877 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,899 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,900 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,900 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,903 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:56:02,908 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 08:56:02,975 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:56:02,983 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:56:02,984 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 08:56:03,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-10-28 08:56:03,081 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-10-28 08:56:03,082 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 08:56:03,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-28 08:56:03,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-10-28 08:56:03,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-10-28 08:56:03,145 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-10-28 08:56:03,145 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 08:56:03,145 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:56:03,146 INFO L254 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] [2021-10-28 08:56:03,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:56:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:56:03,152 INFO L85 PathProgramCache]: Analyzing trace with hash 895196563, now seen corresponding path program 1 times [2021-10-28 08:56:03,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:56:03,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106992301] [2021-10-28 08:56:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:56:03,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:56:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:56:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:56:03,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:56:03,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106992301] [2021-10-28 08:56:03,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106992301] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:56:03,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:56:03,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:56:03,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937789197] [2021-10-28 08:56:03,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:56:03,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:56:03,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:56:03,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:56:03,716 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-10-28 08:56:03,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:03,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:56:03,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-10-28 08:56:03,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:56:04,132 INFO L129 PetriNetUnfolder]: 173/508 cut-off events. [2021-10-28 08:56:04,135 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 08:56:04,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 508 events. 173/508 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2854 event pairs, 21 based on Foata normal form. 21/513 useless extension candidates. Maximal degree in co-relation 803. Up to 117 conditions per place. [2021-10-28 08:56:04,145 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 5 changer transitions 35/109 dead transitions. [2021-10-28 08:56:04,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 339 flow [2021-10-28 08:56:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:56:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 08:56:04,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 907 transitions. [2021-10-28 08:56:04,169 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.850844277673546 [2021-10-28 08:56:04,170 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 907 transitions. [2021-10-28 08:56:04,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 907 transitions. [2021-10-28 08:56:04,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:56:04,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 907 transitions. [2021-10-28 08:56:04,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.76923076923077) internal successors, (907), 13 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:04,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:04,204 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:04,206 INFO L186 Difference]: Start difference. First operand has 76 places, 67 transitions, 143 flow. Second operand 13 states and 907 transitions. [2021-10-28 08:56:04,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 339 flow [2021-10-28 08:56:04,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 08:56:04,216 INFO L242 Difference]: Finished difference. Result has 97 places, 69 transitions, 210 flow [2021-10-28 08:56:04,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=210, PETRI_PLACES=97, PETRI_TRANSITIONS=69} [2021-10-28 08:56:04,218 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2021-10-28 08:56:04,218 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 69 transitions, 210 flow [2021-10-28 08:56:04,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:04,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:56:04,219 INFO L254 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] [2021-10-28 08:56:04,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:56:04,220 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:56:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:56:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1942883596, now seen corresponding path program 1 times [2021-10-28 08:56:04,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:56:04,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770335020] [2021-10-28 08:56:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:56:04,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:56:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:56:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:56:04,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:56:04,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770335020] [2021-10-28 08:56:04,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770335020] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:56:04,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:56:04,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:56:04,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730169062] [2021-10-28 08:56:04,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:56:04,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:56:04,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:56:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:56:04,409 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-10-28 08:56:04,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 69 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:04,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:56:04,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-10-28 08:56:04,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:56:04,705 INFO L129 PetriNetUnfolder]: 94/373 cut-off events. [2021-10-28 08:56:04,706 INFO L130 PetriNetUnfolder]: For 741/873 co-relation queries the response was YES. [2021-10-28 08:56:04,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 373 events. 94/373 cut-off events. For 741/873 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1989 event pairs, 10 based on Foata normal form. 12/377 useless extension candidates. Maximal degree in co-relation 1068. Up to 93 conditions per place. [2021-10-28 08:56:04,710 INFO L132 encePairwiseOnDemand]: 71/82 looper letters, 15 selfloop transitions, 12 changer transitions 34/114 dead transitions. [2021-10-28 08:56:04,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 114 transitions, 668 flow [2021-10-28 08:56:04,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:56:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 08:56:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 906 transitions. [2021-10-28 08:56:04,715 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.849906191369606 [2021-10-28 08:56:04,715 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 906 transitions. [2021-10-28 08:56:04,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 906 transitions. [2021-10-28 08:56:04,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:56:04,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 906 transitions. [2021-10-28 08:56:04,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.6923076923077) internal successors, (906), 13 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:04,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:04,724 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:04,725 INFO L186 Difference]: Start difference. First operand has 97 places, 69 transitions, 210 flow. Second operand 13 states and 906 transitions. [2021-10-28 08:56:04,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 114 transitions, 668 flow [2021-10-28 08:56:04,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 114 transitions, 616 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-10-28 08:56:04,735 INFO L242 Difference]: Finished difference. Result has 107 places, 74 transitions, 299 flow [2021-10-28 08:56:04,735 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=299, PETRI_PLACES=107, PETRI_TRANSITIONS=74} [2021-10-28 08:56:04,736 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 31 predicate places. [2021-10-28 08:56:04,736 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 74 transitions, 299 flow [2021-10-28 08:56:04,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:04,737 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:56:04,737 INFO L254 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] [2021-10-28 08:56:04,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:56:04,738 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:56:04,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:56:04,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1723974385, now seen corresponding path program 1 times [2021-10-28 08:56:04,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:56:04,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062949446] [2021-10-28 08:56:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:56:04,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:56:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:56:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:56:04,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:56:04,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062949446] [2021-10-28 08:56:04,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062949446] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:56:04,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:56:04,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:56:04,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648976631] [2021-10-28 08:56:04,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:56:04,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:56:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:56:04,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:56:04,958 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2021-10-28 08:56:04,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 74 transitions, 299 flow. Second operand has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:04,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:56:04,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2021-10-28 08:56:04,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:56:05,115 INFO L129 PetriNetUnfolder]: 56/283 cut-off events. [2021-10-28 08:56:05,116 INFO L130 PetriNetUnfolder]: For 1029/1310 co-relation queries the response was YES. [2021-10-28 08:56:05,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 283 events. 56/283 cut-off events. For 1029/1310 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1463 event pairs, 24 based on Foata normal form. 11/284 useless extension candidates. Maximal degree in co-relation 904. Up to 67 conditions per place. [2021-10-28 08:56:05,120 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 10 selfloop transitions, 6 changer transitions 15/87 dead transitions. [2021-10-28 08:56:05,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 87 transitions, 482 flow [2021-10-28 08:56:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:56:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 08:56:05,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 496 transitions. [2021-10-28 08:56:05,123 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8641114982578397 [2021-10-28 08:56:05,123 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 496 transitions. [2021-10-28 08:56:05,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 496 transitions. [2021-10-28 08:56:05,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:56:05,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 496 transitions. [2021-10-28 08:56:05,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:05,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:05,128 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:05,128 INFO L186 Difference]: Start difference. First operand has 107 places, 74 transitions, 299 flow. Second operand 7 states and 496 transitions. [2021-10-28 08:56:05,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 87 transitions, 482 flow [2021-10-28 08:56:05,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 440 flow, removed 21 selfloop flow, removed 12 redundant places. [2021-10-28 08:56:05,140 INFO L242 Difference]: Finished difference. Result has 96 places, 72 transitions, 276 flow [2021-10-28 08:56:05,140 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=96, PETRI_TRANSITIONS=72} [2021-10-28 08:56:05,141 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2021-10-28 08:56:05,141 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 72 transitions, 276 flow [2021-10-28 08:56:05,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:05,141 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:56:05,143 INFO L254 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] [2021-10-28 08:56:05,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:56:05,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:56:05,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:56:05,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1609269557, now seen corresponding path program 2 times [2021-10-28 08:56:05,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:56:05,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769940682] [2021-10-28 08:56:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:56:05,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:56:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:56:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:56:05,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:56:05,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769940682] [2021-10-28 08:56:05,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769940682] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:56:05,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:56:05,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:56:05,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105448611] [2021-10-28 08:56:05,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:56:05,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:56:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:56:05,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:56:05,320 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-10-28 08:56:05,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 72 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:05,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:56:05,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-10-28 08:56:05,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:56:05,533 INFO L129 PetriNetUnfolder]: 350/864 cut-off events. [2021-10-28 08:56:05,533 INFO L130 PetriNetUnfolder]: For 573/595 co-relation queries the response was YES. [2021-10-28 08:56:05,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 864 events. 350/864 cut-off events. For 573/595 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6045 event pairs, 24 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 1834. Up to 232 conditions per place. [2021-10-28 08:56:05,546 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 24 selfloop transitions, 17 changer transitions 0/102 dead transitions. [2021-10-28 08:56:05,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 418 flow [2021-10-28 08:56:05,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:56:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 08:56:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 723 transitions. [2021-10-28 08:56:05,549 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8817073170731707 [2021-10-28 08:56:05,549 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 723 transitions. [2021-10-28 08:56:05,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 723 transitions. [2021-10-28 08:56:05,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:56:05,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 723 transitions. [2021-10-28 08:56:05,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.3) internal successors, (723), 10 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:05,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:05,555 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:05,555 INFO L186 Difference]: Start difference. First operand has 96 places, 72 transitions, 276 flow. Second operand 10 states and 723 transitions. [2021-10-28 08:56:05,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 418 flow [2021-10-28 08:56:05,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 383 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-10-28 08:56:05,564 INFO L242 Difference]: Finished difference. Result has 101 places, 87 transitions, 361 flow [2021-10-28 08:56:05,565 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2021-10-28 08:56:05,565 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2021-10-28 08:56:05,565 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 361 flow [2021-10-28 08:56:05,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:05,566 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:56:05,566 INFO L254 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] [2021-10-28 08:56:05,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:56:05,566 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:56:05,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:56:05,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1503586747, now seen corresponding path program 1 times [2021-10-28 08:56:05,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:56:05,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209134328] [2021-10-28 08:56:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:56:05,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:56:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:56:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:56:05,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:56:05,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209134328] [2021-10-28 08:56:05,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209134328] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:56:05,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:56:05,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:56:05,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550206109] [2021-10-28 08:56:05,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:56:05,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:56:05,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:56:05,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:56:05,722 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-10-28 08:56:05,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 361 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:05,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:56:05,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-10-28 08:56:05,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:56:06,017 INFO L129 PetriNetUnfolder]: 316/820 cut-off events. [2021-10-28 08:56:06,017 INFO L130 PetriNetUnfolder]: For 2007/2450 co-relation queries the response was YES. [2021-10-28 08:56:06,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2867 conditions, 820 events. 316/820 cut-off events. For 2007/2450 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 5920 event pairs, 4 based on Foata normal form. 87/846 useless extension candidates. Maximal degree in co-relation 2817. Up to 332 conditions per place. [2021-10-28 08:56:06,027 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 20 selfloop transitions, 32 changer transitions 9/122 dead transitions. [2021-10-28 08:56:06,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 122 transitions, 707 flow [2021-10-28 08:56:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:56:06,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 08:56:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 941 transitions. [2021-10-28 08:56:06,031 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8827392120075047 [2021-10-28 08:56:06,032 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 941 transitions. [2021-10-28 08:56:06,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 941 transitions. [2021-10-28 08:56:06,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:56:06,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 941 transitions. [2021-10-28 08:56:06,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,042 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,042 INFO L186 Difference]: Start difference. First operand has 101 places, 87 transitions, 361 flow. Second operand 13 states and 941 transitions. [2021-10-28 08:56:06,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 122 transitions, 707 flow [2021-10-28 08:56:06,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 122 transitions, 705 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 08:56:06,054 INFO L242 Difference]: Finished difference. Result has 116 places, 107 transitions, 602 flow [2021-10-28 08:56:06,054 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=602, PETRI_PLACES=116, PETRI_TRANSITIONS=107} [2021-10-28 08:56:06,054 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 40 predicate places. [2021-10-28 08:56:06,054 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 107 transitions, 602 flow [2021-10-28 08:56:06,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:56:06,056 INFO L254 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] [2021-10-28 08:56:06,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:56:06,056 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:56:06,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:56:06,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2118190118, now seen corresponding path program 1 times [2021-10-28 08:56:06,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:56:06,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739816101] [2021-10-28 08:56:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:56:06,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:56:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:56:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:56:06,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:56:06,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739816101] [2021-10-28 08:56:06,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739816101] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:56:06,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:56:06,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:56:06,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098041581] [2021-10-28 08:56:06,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:56:06,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:56:06,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:56:06,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:56:06,181 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-10-28 08:56:06,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 107 transitions, 602 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:56:06,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-10-28 08:56:06,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:56:06,509 INFO L129 PetriNetUnfolder]: 245/722 cut-off events. [2021-10-28 08:56:06,509 INFO L130 PetriNetUnfolder]: For 3089/3901 co-relation queries the response was YES. [2021-10-28 08:56:06,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3024 conditions, 722 events. 245/722 cut-off events. For 3089/3901 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 5464 event pairs, 0 based on Foata normal form. 105/767 useless extension candidates. Maximal degree in co-relation 2968. Up to 261 conditions per place. [2021-10-28 08:56:06,518 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 36 changer transitions 20/133 dead transitions. [2021-10-28 08:56:06,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 920 flow [2021-10-28 08:56:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 08:56:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 08:56:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1144 transitions. [2021-10-28 08:56:06,523 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2021-10-28 08:56:06,523 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1144 transitions. [2021-10-28 08:56:06,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1144 transitions. [2021-10-28 08:56:06,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:56:06,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1144 transitions. [2021-10-28 08:56:06,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.5) internal successors, (1144), 16 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,533 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,533 INFO L186 Difference]: Start difference. First operand has 116 places, 107 transitions, 602 flow. Second operand 16 states and 1144 transitions. [2021-10-28 08:56:06,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 920 flow [2021-10-28 08:56:06,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 133 transitions, 757 flow, removed 67 selfloop flow, removed 7 redundant places. [2021-10-28 08:56:06,559 INFO L242 Difference]: Finished difference. Result has 131 places, 107 transitions, 589 flow [2021-10-28 08:56:06,560 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=589, PETRI_PLACES=131, PETRI_TRANSITIONS=107} [2021-10-28 08:56:06,560 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 55 predicate places. [2021-10-28 08:56:06,560 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 107 transitions, 589 flow [2021-10-28 08:56:06,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,561 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:56:06,561 INFO L254 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] [2021-10-28 08:56:06,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:56:06,562 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:56:06,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:56:06,562 INFO L85 PathProgramCache]: Analyzing trace with hash -598373660, now seen corresponding path program 1 times [2021-10-28 08:56:06,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:56:06,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648716247] [2021-10-28 08:56:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:56:06,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:56:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:56:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:56:06,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:56:06,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648716247] [2021-10-28 08:56:06,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648716247] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:56:06,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:56:06,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:56:06,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150248161] [2021-10-28 08:56:06,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:56:06,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:56:06,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:56:06,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:56:06,745 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2021-10-28 08:56:06,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 107 transitions, 589 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:56:06,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2021-10-28 08:56:06,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:56:06,947 INFO L129 PetriNetUnfolder]: 180/743 cut-off events. [2021-10-28 08:56:06,947 INFO L130 PetriNetUnfolder]: For 1675/1776 co-relation queries the response was YES. [2021-10-28 08:56:06,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 743 events. 180/743 cut-off events. For 1675/1776 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6179 event pairs, 0 based on Foata normal form. 7/701 useless extension candidates. Maximal degree in co-relation 2212. Up to 99 conditions per place. [2021-10-28 08:56:06,954 INFO L132 encePairwiseOnDemand]: 70/82 looper letters, 8 selfloop transitions, 7 changer transitions 46/117 dead transitions. [2021-10-28 08:56:06,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 117 transitions, 706 flow [2021-10-28 08:56:06,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:56:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 08:56:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 532 transitions. [2021-10-28 08:56:06,957 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8109756097560976 [2021-10-28 08:56:06,957 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 532 transitions. [2021-10-28 08:56:06,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 532 transitions. [2021-10-28 08:56:06,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:56:06,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 532 transitions. [2021-10-28 08:56:06,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.5) internal successors, (532), 8 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,962 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,962 INFO L186 Difference]: Start difference. First operand has 131 places, 107 transitions, 589 flow. Second operand 8 states and 532 transitions. [2021-10-28 08:56:06,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 117 transitions, 706 flow [2021-10-28 08:56:06,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 117 transitions, 625 flow, removed 16 selfloop flow, removed 14 redundant places. [2021-10-28 08:56:06,982 INFO L242 Difference]: Finished difference. Result has 125 places, 71 transitions, 282 flow [2021-10-28 08:56:06,982 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=282, PETRI_PLACES=125, PETRI_TRANSITIONS=71} [2021-10-28 08:56:06,983 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 49 predicate places. [2021-10-28 08:56:06,983 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 71 transitions, 282 flow [2021-10-28 08:56:06,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:06,984 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:56:06,984 INFO L254 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] [2021-10-28 08:56:06,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:56:06,984 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:56:06,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:56:06,985 INFO L85 PathProgramCache]: Analyzing trace with hash 118950330, now seen corresponding path program 2 times [2021-10-28 08:56:06,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:56:06,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704705853] [2021-10-28 08:56:06,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:56:06,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:56:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:56:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:56:07,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:56:07,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704705853] [2021-10-28 08:56:07,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704705853] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:56:07,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:56:07,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:56:07,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802005913] [2021-10-28 08:56:07,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:56:07,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:56:07,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:56:07,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:56:07,093 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2021-10-28 08:56:07,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 71 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 64.875) internal successors, (519), 8 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:07,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:56:07,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2021-10-28 08:56:07,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:56:07,169 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2021-10-28 08:56:07,169 INFO L130 PetriNetUnfolder]: For 75/77 co-relation queries the response was YES. [2021-10-28 08:56:07,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 80 events. 5/80 cut-off events. For 75/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 2/81 useless extension candidates. Maximal degree in co-relation 171. Up to 9 conditions per place. [2021-10-28 08:56:07,170 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-10-28 08:56:07,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 69 transitions, 304 flow [2021-10-28 08:56:07,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:56:07,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 08:56:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 582 transitions. [2021-10-28 08:56:07,173 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7886178861788617 [2021-10-28 08:56:07,173 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 582 transitions. [2021-10-28 08:56:07,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 582 transitions. [2021-10-28 08:56:07,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:56:07,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 582 transitions. [2021-10-28 08:56:07,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.66666666666667) internal successors, (582), 9 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:07,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:07,178 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:07,178 INFO L186 Difference]: Start difference. First operand has 125 places, 71 transitions, 282 flow. Second operand 9 states and 582 transitions. [2021-10-28 08:56:07,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 69 transitions, 304 flow [2021-10-28 08:56:07,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 69 transitions, 206 flow, removed 17 selfloop flow, removed 28 redundant places. [2021-10-28 08:56:07,181 INFO L242 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2021-10-28 08:56:07,181 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2021-10-28 08:56:07,181 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2021-10-28 08:56:07,182 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2021-10-28 08:56:07,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 64.875) internal successors, (519), 8 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:56:07,184 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:56:07,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 08:56:07,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 08:56:07,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 08:56:07,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 08:56:07,189 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2021-10-28 08:56:07,191 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 08:56:07,191 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:56:07,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:56:07 BasicIcfg [2021-10-28 08:56:07,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:56:07,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:56:07,194 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:56:07,194 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:56:07,195 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:56:02" (3/4) ... [2021-10-28 08:56:07,197 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:56:07,203 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 08:56:07,203 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 08:56:07,204 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 08:56:07,208 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 08:56:07,208 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 08:56:07,208 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:56:07,208 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:56:07,242 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:56:07,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:56:07,243 INFO L168 Benchmark]: Toolchain (without parser) took 5577.42 ms. Allocated memory was 88.1 MB in the beginning and 140.5 MB in the end (delta: 52.4 MB). Free memory was 53.6 MB in the beginning and 92.9 MB in the end (delta: -39.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:56:07,244 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory was 68.1 MB in the beginning and 68.0 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:56:07,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.01 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 53.3 MB in the beginning and 76.0 MB in the end (delta: -22.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:56:07,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.65 ms. Allocated memory is still 109.1 MB. Free memory was 76.0 MB in the beginning and 74.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:56:07,246 INFO L168 Benchmark]: Boogie Preprocessor took 54.04 ms. Allocated memory is still 109.1 MB. Free memory was 74.4 MB in the beginning and 73.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:56:07,246 INFO L168 Benchmark]: RCFGBuilder took 460.27 ms. Allocated memory is still 109.1 MB. Free memory was 73.0 MB in the beginning and 60.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:56:07,247 INFO L168 Benchmark]: TraceAbstraction took 4412.33 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 60.3 MB in the beginning and 95.0 MB in the end (delta: -34.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:56:07,247 INFO L168 Benchmark]: Witness Printer took 48.11 ms. Allocated memory is still 140.5 MB. Free memory was 95.0 MB in the beginning and 92.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:56:07,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory was 68.1 MB in the beginning and 68.0 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 521.01 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 53.3 MB in the beginning and 76.0 MB in the end (delta: -22.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.65 ms. Allocated memory is still 109.1 MB. Free memory was 76.0 MB in the beginning and 74.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.04 ms. Allocated memory is still 109.1 MB. Free memory was 74.4 MB in the beginning and 73.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 460.27 ms. Allocated memory is still 109.1 MB. Free memory was 73.0 MB in the beginning and 60.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4412.33 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 60.3 MB in the beginning and 95.0 MB in the end (delta: -34.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 48.11 ms. Allocated memory is still 140.5 MB. Free memory was 95.0 MB in the beginning and 92.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 274 SDslu, 299 SDs, 0 SdLazy, 356 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=602occurred in iteration=5, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 1704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 08:56:07,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fddf8f-621b-406e-81c2-4a6012feb0ea/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...