./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c --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_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/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_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/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_5086f819-7c5f-420c-a5c3-917a736787a0/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 7c615a04683f0f8050243ec529c03e20511a5c93f5e823175650f11e9fefc562 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:51:01,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:51:01,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:51:01,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:51:01,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:51:01,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:51:01,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:51:01,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:51:01,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:51:01,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:51:01,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:51:01,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:51:01,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:51:01,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:51:01,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:51:01,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:51:01,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:51:01,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:51:01,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:51:01,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:51:01,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:51:01,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:51:01,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:51:01,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:51:01,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:51:01,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:51:01,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:51:01,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:51:01,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:51:01,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:51:01,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:51:01,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:51:01,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:51:01,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:51:01,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:51:01,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:51:01,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:51:01,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:51:01,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:51:01,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:51:01,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:51:01,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:51:01,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:51:01,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:51:01,636 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:51:01,636 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:51:01,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:51:01,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:51:01,640 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:51:01,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:51:01,640 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:51:01,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:51:01,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:51:01,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:51:01,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:51:01,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:51:01,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:51:01,644 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:51:01,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:51:01,644 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:51:01,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:51:01,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:51:01,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:51:01,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:51:01,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:51:01,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:51:01,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:51:01,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:51:01,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:51:01,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:51:01,647 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:51:01,650 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:51:01,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:51:01,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:51:01,651 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_5086f819-7c5f-420c-a5c3-917a736787a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c615a04683f0f8050243ec529c03e20511a5c93f5e823175650f11e9fefc562 [2021-10-28 08:51:02,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:51:02,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:51:02,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:51:02,053 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:51:02,053 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:51:02,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2021-10-28 08:51:02,119 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/data/3c453ec48/ed3eded0a7ca49d48add0c09d32b6a37/FLAG181e027d2 [2021-10-28 08:51:02,735 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:51:02,736 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2021-10-28 08:51:02,751 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/data/3c453ec48/ed3eded0a7ca49d48add0c09d32b6a37/FLAG181e027d2 [2021-10-28 08:51:03,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/data/3c453ec48/ed3eded0a7ca49d48add0c09d32b6a37 [2021-10-28 08:51:03,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:51:03,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:51:03,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:51:03,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:51:03,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:51:03,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:51:03" (1/1) ... [2021-10-28 08:51:03,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b7f1007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03, skipping insertion in model container [2021-10-28 08:51:03,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:51:03" (1/1) ... [2021-10-28 08:51:03,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:51:03,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:51:03,314 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_5086f819-7c5f-420c-a5c3-917a736787a0/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c[2271,2284] [2021-10-28 08:51:03,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:51:03,337 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:51:03,362 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_5086f819-7c5f-420c-a5c3-917a736787a0/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c[2271,2284] [2021-10-28 08:51:03,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:51:03,387 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:51:03,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03 WrapperNode [2021-10-28 08:51:03,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:51:03,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:51:03,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:51:03,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:51:03,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03" (1/1) ... [2021-10-28 08:51:03,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03" (1/1) ... [2021-10-28 08:51:03,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:51:03,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:51:03,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:51:03,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:51:03,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03" (1/1) ... [2021-10-28 08:51:03,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03" (1/1) ... [2021-10-28 08:51:03,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03" (1/1) ... [2021-10-28 08:51:03,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03" (1/1) ... [2021-10-28 08:51:03,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03" (1/1) ... [2021-10-28 08:51:03,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03" (1/1) ... [2021-10-28 08:51:03,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03" (1/1) ... [2021-10-28 08:51:03,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:51:03,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:51:03,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:51:03,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:51:03,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03" (1/1) ... [2021-10-28 08:51:03,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:51:03,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:51:03,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:51:03,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:51:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:51:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:51:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:51:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 08:51:03,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 08:51:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 08:51:03,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 08:51:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:51:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 08:51:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 08:51:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:51:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:51:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:51:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:51:03,626 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 08:51:04,570 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:51:04,571 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-28 08:51:04,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:51:04 BoogieIcfgContainer [2021-10-28 08:51:04,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:51:04,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:51:04,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:51:04,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:51:04,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:51:03" (1/3) ... [2021-10-28 08:51:04,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed4142c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:51:04, skipping insertion in model container [2021-10-28 08:51:04,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:51:03" (2/3) ... [2021-10-28 08:51:04,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed4142c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:51:04, skipping insertion in model container [2021-10-28 08:51:04,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:51:04" (3/3) ... [2021-10-28 08:51:04,585 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2021-10-28 08:51:04,591 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 08:51:04,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:51:04,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:51:04,592 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 08:51:04,667 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,668 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,668 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,668 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,669 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,669 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,669 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,669 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,669 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,670 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,679 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,679 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,679 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,680 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,680 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,680 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,680 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,680 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,681 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,681 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,681 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,682 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,682 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,682 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,682 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,683 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,683 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,683 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,684 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,685 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,686 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,686 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,687 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,687 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,689 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,689 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,689 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,690 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,690 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,690 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,690 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,690 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,691 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,691 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,691 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,691 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,692 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,692 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,692 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,692 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,692 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,693 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,693 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,693 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,694 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,694 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,694 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,696 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,697 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,698 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,699 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,699 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,707 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,708 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,710 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,714 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,714 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,715 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,715 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,715 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,716 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,719 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,720 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,720 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,728 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,728 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,728 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,729 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,729 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,729 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,729 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,730 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,730 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,730 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:51:04,738 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-28 08:51:04,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:51:04,834 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 08:51:04,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 08:51:04,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 226 flow [2021-10-28 08:51:04,941 INFO L129 PetriNetUnfolder]: 9/103 cut-off events. [2021-10-28 08:51:04,941 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 08:51:04,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 103 events. 9/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2021-10-28 08:51:04,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 105 transitions, 226 flow [2021-10-28 08:51:04,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 95 transitions, 202 flow [2021-10-28 08:51:04,993 INFO L129 PetriNetUnfolder]: 9/94 cut-off events. [2021-10-28 08:51:04,994 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 08:51:04,994 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:51:04,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:51:04,995 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:51:05,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:51:05,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1428906712, now seen corresponding path program 1 times [2021-10-28 08:51:05,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:51:05,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178572390] [2021-10-28 08:51:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:51:05,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:51:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:51:05,303 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 08:51:05,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:51:05,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178572390] [2021-10-28 08:51:05,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178572390] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:51:05,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:51:05,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:51:05,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479696662] [2021-10-28 08:51:05,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:51:05,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:51:05,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:51:05,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:51:05,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 105 [2021-10-28 08:51:05,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 95 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 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 08:51:05,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:51:05,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 105 [2021-10-28 08:51:05,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:51:05,408 INFO L129 PetriNetUnfolder]: 3/89 cut-off events. [2021-10-28 08:51:05,409 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 08:51:05,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 3/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 6/89 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2021-10-28 08:51:05,412 INFO L132 encePairwiseOnDemand]: 99/105 looper letters, 0 selfloop transitions, 0 changer transitions 3/89 dead transitions. [2021-10-28 08:51:05,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 190 flow [2021-10-28 08:51:05,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:51:05,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-28 08:51:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 202 transitions. [2021-10-28 08:51:05,428 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9619047619047619 [2021-10-28 08:51:05,429 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 202 transitions. [2021-10-28 08:51:05,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 202 transitions. [2021-10-28 08:51:05,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:51:05,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 202 transitions. [2021-10-28 08:51:05,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 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 08:51:05,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 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 08:51:05,455 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 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 08:51:05,459 INFO L186 Difference]: Start difference. First operand has 93 places, 95 transitions, 202 flow. Second operand 2 states and 202 transitions. [2021-10-28 08:51:05,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 190 flow [2021-10-28 08:51:05,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 182 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 08:51:05,476 INFO L242 Difference]: Finished difference. Result has 90 places, 86 transitions, 176 flow [2021-10-28 08:51:05,479 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=176, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2021-10-28 08:51:05,480 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, -3 predicate places. [2021-10-28 08:51:05,480 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 176 flow [2021-10-28 08:51:05,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 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 08:51:05,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:51:05,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:51:05,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:51:05,482 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:51:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:51:05,485 INFO L85 PathProgramCache]: Analyzing trace with hash 112569318, now seen corresponding path program 1 times [2021-10-28 08:51:05,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:51:05,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247279317] [2021-10-28 08:51:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:51:05,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:51:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:51:05,833 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 08:51:05,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:51:05,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247279317] [2021-10-28 08:51:05,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247279317] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:51:05,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:51:05,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:51:05,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754660087] [2021-10-28 08:51:05,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:51:05,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:51:05,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:51:05,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:51:05,839 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 105 [2021-10-28 08:51:05,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 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 08:51:05,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:51:05,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 105 [2021-10-28 08:51:05,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:51:05,919 INFO L129 PetriNetUnfolder]: 8/117 cut-off events. [2021-10-28 08:51:05,920 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 08:51:05,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 117 events. 8/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 159 event pairs, 0 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 143. Up to 13 conditions per place. [2021-10-28 08:51:05,922 INFO L132 encePairwiseOnDemand]: 99/105 looper letters, 14 selfloop transitions, 3 changer transitions 3/91 dead transitions. [2021-10-28 08:51:05,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 226 flow [2021-10-28 08:51:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:51:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 08:51:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2021-10-28 08:51:05,927 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8019047619047619 [2021-10-28 08:51:05,927 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2021-10-28 08:51:05,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2021-10-28 08:51:05,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:51:05,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2021-10-28 08:51:05,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 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 08:51:05,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:51:05,934 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:51:05,935 INFO L186 Difference]: Start difference. First operand has 90 places, 86 transitions, 176 flow. Second operand 5 states and 421 transitions. [2021-10-28 08:51:05,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 226 flow [2021-10-28 08:51:05,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 08:51:05,940 INFO L242 Difference]: Finished difference. Result has 94 places, 88 transitions, 199 flow [2021-10-28 08:51:05,940 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2021-10-28 08:51:05,941 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 1 predicate places. [2021-10-28 08:51:05,941 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 199 flow [2021-10-28 08:51:05,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 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 08:51:05,942 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:51:05,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:51:05,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:51:05,943 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:51:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:51:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2101046264, now seen corresponding path program 1 times [2021-10-28 08:51:05,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:51:05,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680459559] [2021-10-28 08:51:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:51:05,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:51:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:51:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:51:06,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:51:06,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680459559] [2021-10-28 08:51:06,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680459559] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:51:06,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:51:06,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:51:06,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757822621] [2021-10-28 08:51:06,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:51:06,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:51:06,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:51:06,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:51:06,099 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2021-10-28 08:51:06,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 199 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 0 states have call successors, (0), 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 08:51:06,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:51:06,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2021-10-28 08:51:06,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:51:06,346 INFO L129 PetriNetUnfolder]: 51/287 cut-off events. [2021-10-28 08:51:06,346 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-28 08:51:06,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 287 events. 51/287 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1166 event pairs, 20 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 433. Up to 82 conditions per place. [2021-10-28 08:51:06,352 INFO L132 encePairwiseOnDemand]: 96/105 looper letters, 28 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2021-10-28 08:51:06,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 100 transitions, 296 flow [2021-10-28 08:51:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:51:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 08:51:06,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 636 transitions. [2021-10-28 08:51:06,357 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2021-10-28 08:51:06,357 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 636 transitions. [2021-10-28 08:51:06,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 636 transitions. [2021-10-28 08:51:06,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:51:06,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 636 transitions. [2021-10-28 08:51:06,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.5) internal successors, (636), 8 states have internal predecessors, (636), 0 states have call successors, (0), 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 08:51:06,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 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 08:51:06,366 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 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 08:51:06,366 INFO L186 Difference]: Start difference. First operand has 94 places, 88 transitions, 199 flow. Second operand 8 states and 636 transitions. [2021-10-28 08:51:06,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 100 transitions, 296 flow [2021-10-28 08:51:06,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 100 transitions, 289 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-28 08:51:06,375 INFO L242 Difference]: Finished difference. Result has 99 places, 91 transitions, 228 flow [2021-10-28 08:51:06,376 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=228, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2021-10-28 08:51:06,376 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 6 predicate places. [2021-10-28 08:51:06,376 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 228 flow [2021-10-28 08:51:06,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 0 states have call successors, (0), 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 08:51:06,377 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:51:06,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:51:06,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:51:06,378 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:51:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:51:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1112933770, now seen corresponding path program 1 times [2021-10-28 08:51:06,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:51:06,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293166307] [2021-10-28 08:51:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:51:06,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:51:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:51:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:51:06,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:51:06,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293166307] [2021-10-28 08:51:06,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293166307] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:51:06,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:51:06,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:51:06,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599300448] [2021-10-28 08:51:06,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:51:06,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:51:06,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:51:06,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:51:06,587 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2021-10-28 08:51:06,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 0 states have call successors, (0), 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 08:51:06,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:51:06,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2021-10-28 08:51:06,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:51:06,775 INFO L129 PetriNetUnfolder]: 49/237 cut-off events. [2021-10-28 08:51:06,775 INFO L130 PetriNetUnfolder]: For 28/31 co-relation queries the response was YES. [2021-10-28 08:51:06,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 237 events. 49/237 cut-off events. For 28/31 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 749 event pairs, 23 based on Foata normal form. 3/224 useless extension candidates. Maximal degree in co-relation 404. Up to 90 conditions per place. [2021-10-28 08:51:06,779 INFO L132 encePairwiseOnDemand]: 96/105 looper letters, 22 selfloop transitions, 6 changer transitions 7/99 dead transitions. [2021-10-28 08:51:06,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 99 transitions, 313 flow [2021-10-28 08:51:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:51:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 08:51:06,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 634 transitions. [2021-10-28 08:51:06,783 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7547619047619047 [2021-10-28 08:51:06,783 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 634 transitions. [2021-10-28 08:51:06,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 634 transitions. [2021-10-28 08:51:06,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:51:06,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 634 transitions. [2021-10-28 08:51:06,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 0 states have call successors, (0), 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 08:51:06,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 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 08:51:06,793 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 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 08:51:06,793 INFO L186 Difference]: Start difference. First operand has 99 places, 91 transitions, 228 flow. Second operand 8 states and 634 transitions. [2021-10-28 08:51:06,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 99 transitions, 313 flow [2021-10-28 08:51:06,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 303 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 08:51:06,800 INFO L242 Difference]: Finished difference. Result has 104 places, 89 transitions, 222 flow [2021-10-28 08:51:06,800 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=222, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2021-10-28 08:51:06,801 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 11 predicate places. [2021-10-28 08:51:06,801 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 222 flow [2021-10-28 08:51:06,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 0 states have call successors, (0), 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 08:51:06,802 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:51:06,802 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, 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 08:51:06,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:51:06,802 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:51:06,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:51:06,803 INFO L85 PathProgramCache]: Analyzing trace with hash 176132479, now seen corresponding path program 1 times [2021-10-28 08:51:06,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:51:06,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491434451] [2021-10-28 08:51:06,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:51:06,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:51:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:51:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:51:06,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:51:06,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491434451] [2021-10-28 08:51:06,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491434451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:51:06,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760106538] [2021-10-28 08:51:06,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:51:06,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:51:06,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:51:06,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:51:07,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 08:51:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:51:07,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:51:07,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:51:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:51:07,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760106538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:51:07,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:51:07,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-10-28 08:51:07,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496053048] [2021-10-28 08:51:07,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:51:07,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:51:07,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:51:07,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:51:07,509 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2021-10-28 08:51:07,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 222 flow. Second operand has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 0 states have call successors, (0), 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 08:51:07,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:51:07,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2021-10-28 08:51:07,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:51:07,681 INFO L129 PetriNetUnfolder]: 51/202 cut-off events. [2021-10-28 08:51:07,682 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-10-28 08:51:07,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 202 events. 51/202 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 563 event pairs, 14 based on Foata normal form. 5/203 useless extension candidates. Maximal degree in co-relation 384. Up to 63 conditions per place. [2021-10-28 08:51:07,685 INFO L132 encePairwiseOnDemand]: 97/105 looper letters, 27 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2021-10-28 08:51:07,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 314 flow [2021-10-28 08:51:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:51:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 08:51:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 634 transitions. [2021-10-28 08:51:07,689 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7547619047619047 [2021-10-28 08:51:07,689 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 634 transitions. [2021-10-28 08:51:07,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 634 transitions. [2021-10-28 08:51:07,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:51:07,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 634 transitions. [2021-10-28 08:51:07,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 0 states have call successors, (0), 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 08:51:07,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 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 08:51:07,696 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 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 08:51:07,696 INFO L186 Difference]: Start difference. First operand has 104 places, 89 transitions, 222 flow. Second operand 8 states and 634 transitions. [2021-10-28 08:51:07,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 314 flow [2021-10-28 08:51:07,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 288 flow, removed 7 selfloop flow, removed 9 redundant places. [2021-10-28 08:51:07,705 INFO L242 Difference]: Finished difference. Result has 100 places, 91 transitions, 228 flow [2021-10-28 08:51:07,705 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=228, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2021-10-28 08:51:07,706 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 7 predicate places. [2021-10-28 08:51:07,706 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 228 flow [2021-10-28 08:51:07,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 0 states have call successors, (0), 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 08:51:07,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:51:07,707 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, 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 08:51:07,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:51:07,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:51:07,933 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:51:07,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:51:07,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1549635063, now seen corresponding path program 1 times [2021-10-28 08:51:07,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:51:07,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510601661] [2021-10-28 08:51:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:51:07,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:51:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:51:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:51:08,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:51:08,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510601661] [2021-10-28 08:51:08,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510601661] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:51:08,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520775646] [2021-10-28 08:51:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:51:08,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:51:08,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:51:08,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:51:08,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 08:51:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:51:08,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:51:08,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:51:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:51:08,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520775646] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:51:08,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:51:08,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-10-28 08:51:08,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979085794] [2021-10-28 08:51:08,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:51:08,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:51:08,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:51:08,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:51:08,506 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2021-10-28 08:51:08,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 228 flow. Second operand has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 0 states have call successors, (0), 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 08:51:08,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:51:08,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2021-10-28 08:51:08,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:51:08,659 INFO L129 PetriNetUnfolder]: 45/207 cut-off events. [2021-10-28 08:51:08,660 INFO L130 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2021-10-28 08:51:08,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 207 events. 45/207 cut-off events. For 24/26 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 637 event pairs, 17 based on Foata normal form. 2/182 useless extension candidates. Maximal degree in co-relation 363. Up to 57 conditions per place. [2021-10-28 08:51:08,662 INFO L132 encePairwiseOnDemand]: 97/105 looper letters, 27 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2021-10-28 08:51:08,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 99 transitions, 316 flow [2021-10-28 08:51:08,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:51:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 08:51:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 634 transitions. [2021-10-28 08:51:08,666 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7547619047619047 [2021-10-28 08:51:08,666 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 634 transitions. [2021-10-28 08:51:08,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 634 transitions. [2021-10-28 08:51:08,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:51:08,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 634 transitions. [2021-10-28 08:51:08,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 0 states have call successors, (0), 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 08:51:08,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 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 08:51:08,672 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 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 08:51:08,672 INFO L186 Difference]: Start difference. First operand has 100 places, 91 transitions, 228 flow. Second operand 8 states and 634 transitions. [2021-10-28 08:51:08,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 99 transitions, 316 flow [2021-10-28 08:51:08,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 306 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-28 08:51:08,676 INFO L242 Difference]: Finished difference. Result has 103 places, 92 transitions, 240 flow [2021-10-28 08:51:08,677 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=240, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2021-10-28 08:51:08,677 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 10 predicate places. [2021-10-28 08:51:08,677 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 240 flow [2021-10-28 08:51:08,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 0 states have call successors, (0), 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 08:51:08,678 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:51:08,679 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, 1, 1, 1, 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 08:51:08,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:51:08,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 08:51:08,905 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:51:08,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:51:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2073614047, now seen corresponding path program 1 times [2021-10-28 08:51:08,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:51:08,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572888626] [2021-10-28 08:51:08,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:51:08,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:51:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:51:09,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 08:51:09,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:51:09,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572888626] [2021-10-28 08:51:09,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572888626] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:51:09,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:51:09,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 08:51:09,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068311267] [2021-10-28 08:51:09,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:51:09,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:51:09,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:51:09,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:51:09,111 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 105 [2021-10-28 08:51:09,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 240 flow. Second operand has 9 states, 9 states have (on average 69.22222222222223) internal successors, (623), 9 states have internal predecessors, (623), 0 states have call successors, (0), 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 08:51:09,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:51:09,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 105 [2021-10-28 08:51:09,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:51:09,317 INFO L129 PetriNetUnfolder]: 9/102 cut-off events. [2021-10-28 08:51:09,318 INFO L130 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2021-10-28 08:51:09,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 102 events. 9/102 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 126 event pairs, 3 based on Foata normal form. 6/107 useless extension candidates. Maximal degree in co-relation 172. Up to 15 conditions per place. [2021-10-28 08:51:09,319 INFO L132 encePairwiseOnDemand]: 96/105 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2021-10-28 08:51:09,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 77 transitions, 247 flow [2021-10-28 08:51:09,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:51:09,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 08:51:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 617 transitions. [2021-10-28 08:51:09,323 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6529100529100529 [2021-10-28 08:51:09,323 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 617 transitions. [2021-10-28 08:51:09,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 617 transitions. [2021-10-28 08:51:09,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:51:09,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 617 transitions. [2021-10-28 08:51:09,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.55555555555556) internal successors, (617), 9 states have internal predecessors, (617), 0 states have call successors, (0), 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 08:51:09,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 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 08:51:09,332 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 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 08:51:09,332 INFO L186 Difference]: Start difference. First operand has 103 places, 92 transitions, 240 flow. Second operand 9 states and 617 transitions. [2021-10-28 08:51:09,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 77 transitions, 247 flow [2021-10-28 08:51:09,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 77 transitions, 234 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-10-28 08:51:09,336 INFO L242 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2021-10-28 08:51:09,337 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2021-10-28 08:51:09,337 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, -3 predicate places. [2021-10-28 08:51:09,338 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2021-10-28 08:51:09,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 69.22222222222223) internal successors, (623), 9 states have internal predecessors, (623), 0 states have call successors, (0), 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 08:51:09,342 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:51:09,343 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 08:51:09,343 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 08:51:09,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:51:09,348 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:51:09,351 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 08:51:09,352 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:51:09,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:51:09 BasicIcfg [2021-10-28 08:51:09,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:51:09,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:51:09,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:51:09,360 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:51:09,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:51:04" (3/4) ... [2021-10-28 08:51:09,364 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:51:09,373 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 08:51:09,373 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 08:51:09,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-28 08:51:09,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 08:51:09,384 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:51:09,384 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:51:09,452 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:51:09,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:51:09,455 INFO L168 Benchmark]: Toolchain (without parser) took 6393.56 ms. Allocated memory was 104.9 MB in the beginning and 169.9 MB in the end (delta: 65.0 MB). Free memory was 75.9 MB in the beginning and 133.6 MB in the end (delta: -57.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:51:09,455 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 104.9 MB. Free memory is still 59.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:51:09,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.27 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 77.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:51:09,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.02 ms. Allocated memory is still 104.9 MB. Free memory was 77.1 MB in the beginning and 75.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:51:09,460 INFO L168 Benchmark]: Boogie Preprocessor took 52.61 ms. Allocated memory is still 104.9 MB. Free memory was 75.3 MB in the beginning and 73.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:51:09,460 INFO L168 Benchmark]: RCFGBuilder took 1072.78 ms. Allocated memory is still 104.9 MB. Free memory was 73.8 MB in the beginning and 51.0 MB in the end (delta: 22.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:51:09,461 INFO L168 Benchmark]: TraceAbstraction took 4782.43 ms. Allocated memory was 104.9 MB in the beginning and 169.9 MB in the end (delta: 65.0 MB). Free memory was 50.7 MB in the beginning and 136.7 MB in the end (delta: -86.0 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:51:09,461 INFO L168 Benchmark]: Witness Printer took 93.75 ms. Allocated memory is still 169.9 MB. Free memory was 136.7 MB in the beginning and 133.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:51:09,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 104.9 MB. Free memory is still 59.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.27 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 77.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.02 ms. Allocated memory is still 104.9 MB. Free memory was 77.1 MB in the beginning and 75.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.61 ms. Allocated memory is still 104.9 MB. Free memory was 75.3 MB in the beginning and 73.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1072.78 ms. Allocated memory is still 104.9 MB. Free memory was 73.8 MB in the beginning and 51.0 MB in the end (delta: 22.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4782.43 ms. Allocated memory was 104.9 MB in the beginning and 169.9 MB in the end (delta: 65.0 MB). Free memory was 50.7 MB in the beginning and 136.7 MB in the end (delta: -86.0 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. * Witness Printer took 93.75 ms. Allocated memory is still 169.9 MB. Free memory was 136.7 MB in the beginning and 133.6 MB in the end (delta: 3.1 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: 81]: 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 5 procedures, 117 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 320 SDslu, 71 SDs, 0 SdLazy, 383 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 171 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=6, InterpolantAutomatonStates: 48, 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, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 696 NumberOfCodeBlocks, 696 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 687 ConstructedInterpolants, 0 QuantifiedInterpolants, 1577 SizeOfPredicates, 10 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 9/13 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 08:51:09,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086f819-7c5f-420c-a5c3-917a736787a0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...