./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a --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 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 09:02:37,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:02:37,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:02:37,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:02:37,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:02:37,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:02:37,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:02:37,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:02:37,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:02:37,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:02:37,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:02:37,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:02:37,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:02:37,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:02:37,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:02:37,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:02:37,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:02:37,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:02:37,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:02:37,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:02:37,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:02:37,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:02:37,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:02:37,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:02:37,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:02:37,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:02:37,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:02:37,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:02:37,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:02:37,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:02:37,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:02:37,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:02:37,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:02:37,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:02:37,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:02:37,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:02:37,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:02:37,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:02:37,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:02:37,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:02:37,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:02:37,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 09:02:37,692 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:02:37,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:02:37,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:02:37,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:02:37,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:02:37,693 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:02:37,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:02:37,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:02:37,695 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:02:37,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:02:37,696 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:02:37,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:02:37,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:02:37,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:02:37,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:02:37,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:02:37,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:02:37,698 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:02:37,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:02:37,699 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:02:37,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:02:37,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:02:37,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:02:37,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:02:37,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:02:37,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:02:37,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:02:37,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:02:37,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:02:37,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:02:37,703 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:02:37,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:02:37,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:02:37,704 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_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 [2022-11-21 09:02:38,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:02:38,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:02:38,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:02:38,132 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:02:38,132 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:02:38,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-wmm/safe004_tso.i [2022-11-21 09:02:41,511 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:02:41,877 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:02:41,880 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/sv-benchmarks/c/pthread-wmm/safe004_tso.i [2022-11-21 09:02:41,907 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/data/3519bc7fd/ea0133932c0f4c15be85bb826ca706b4/FLAG995945efd [2022-11-21 09:02:41,930 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/data/3519bc7fd/ea0133932c0f4c15be85bb826ca706b4 [2022-11-21 09:02:41,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:02:41,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:02:41,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:02:41,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:02:41,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:02:41,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:41" (1/1) ... [2022-11-21 09:02:41,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25fc83bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:41, skipping insertion in model container [2022-11-21 09:02:41,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:41" (1/1) ... [2022-11-21 09:02:41,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:02:42,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:02:42,279 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/sv-benchmarks/c/pthread-wmm/safe004_tso.i[945,958] [2022-11-21 09:02:42,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:02:42,507 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:02:42,530 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/sv-benchmarks/c/pthread-wmm/safe004_tso.i[945,958] [2022-11-21 09:02:42,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:02:42,646 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:02:42,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42 WrapperNode [2022-11-21 09:02:42,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:02:42,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:02:42,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:02:42,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:02:42,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42" (1/1) ... [2022-11-21 09:02:42,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42" (1/1) ... [2022-11-21 09:02:42,731 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-21 09:02:42,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:02:42,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:02:42,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:02:42,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:02:42,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42" (1/1) ... [2022-11-21 09:02:42,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42" (1/1) ... [2022-11-21 09:02:42,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42" (1/1) ... [2022-11-21 09:02:42,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42" (1/1) ... [2022-11-21 09:02:42,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42" (1/1) ... [2022-11-21 09:02:42,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42" (1/1) ... [2022-11-21 09:02:42,771 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42" (1/1) ... [2022-11-21 09:02:42,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42" (1/1) ... [2022-11-21 09:02:42,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:02:42,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:02:42,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:02:42,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:02:42,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42" (1/1) ... [2022-11-21 09:02:42,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:02:42,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:42,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:42,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:02:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:02:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 09:02:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:02:42,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:02:42,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:02:42,887 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-21 09:02:42,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-21 09:02:42,887 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-21 09:02:42,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-21 09:02:42,887 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-21 09:02:42,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-21 09:02:42,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:02:42,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 09:02:42,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:02:42,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:02:42,890 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 09:02:43,069 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:02:43,072 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:02:43,300 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:02:43,318 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:02:43,318 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 09:02:43,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:43 BoogieIcfgContainer [2022-11-21 09:02:43,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:02:43,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:02:43,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:02:43,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:02:43,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:02:41" (1/3) ... [2022-11-21 09:02:43,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d1ef4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:43, skipping insertion in model container [2022-11-21 09:02:43,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:42" (2/3) ... [2022-11-21 09:02:43,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d1ef4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:43, skipping insertion in model container [2022-11-21 09:02:43,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:43" (3/3) ... [2022-11-21 09:02:43,348 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2022-11-21 09:02:43,378 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 09:02:43,408 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:02:43,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 09:02:43,408 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 09:02:43,542 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 09:02:43,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-11-21 09:02:43,699 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2022-11-21 09:02:43,699 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 09:02:43,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-21 09:02:43,705 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-11-21 09:02:43,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-11-21 09:02:43,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:02:43,745 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@344594a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:02:43,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 09:02:43,804 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2022-11-21 09:02:43,805 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 09:02:43,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:43,806 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:43,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 09:02:43,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:43,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1258848663, now seen corresponding path program 1 times [2022-11-21 09:02:43,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:43,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257257249] [2022-11-21 09:02:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:43,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:44,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:44,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257257249] [2022-11-21 09:02:44,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257257249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:44,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:44,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:02:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138174288] [2022-11-21 09:02:44,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:44,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:02:44,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:44,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:02:44,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:02:44,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 91 [2022-11-21 09:02:44,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:44,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:44,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 91 [2022-11-21 09:02:44,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:45,007 INFO L130 PetriNetUnfolder]: 3/89 cut-off events. [2022-11-21 09:02:45,007 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 09:02:45,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 89 events. 3/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 88. Up to 7 conditions per place. [2022-11-21 09:02:45,009 INFO L137 encePairwiseOnDemand]: 84/91 looper letters, 9 selfloop transitions, 2 changer transitions 11/83 dead transitions. [2022-11-21 09:02:45,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 217 flow [2022-11-21 09:02:45,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:02:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:02:45,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 709 transitions. [2022-11-21 09:02:45,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8656898656898657 [2022-11-21 09:02:45,036 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 709 transitions. [2022-11-21 09:02:45,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 709 transitions. [2022-11-21 09:02:45,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:45,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 709 transitions. [2022-11-21 09:02:45,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.77777777777777) internal successors, (709), 9 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:45,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:45,071 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:45,077 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 9 states and 709 transitions. [2022-11-21 09:02:45,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 217 flow [2022-11-21 09:02:45,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 09:02:45,085 INFO L231 Difference]: Finished difference. Result has 95 places, 72 transitions, 170 flow [2022-11-21 09:02:45,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=95, PETRI_TRANSITIONS=72} [2022-11-21 09:02:45,091 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2022-11-21 09:02:45,092 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 170 flow [2022-11-21 09:02:45,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:45,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:45,093 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:45,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:02:45,094 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 09:02:45,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:45,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1824939960, now seen corresponding path program 1 times [2022-11-21 09:02:45,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:45,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283477146] [2022-11-21 09:02:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:45,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:45,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:45,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283477146] [2022-11-21 09:02:45,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283477146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:45,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:45,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:02:45,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093187104] [2022-11-21 09:02:45,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:45,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:02:45,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:45,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:02:45,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:02:45,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-11-21 09:02:45,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 72 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:45,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:45,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-11-21 09:02:45,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:46,247 INFO L130 PetriNetUnfolder]: 382/821 cut-off events. [2022-11-21 09:02:46,247 INFO L131 PetriNetUnfolder]: For 260/345 co-relation queries the response was YES. [2022-11-21 09:02:46,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 821 events. 382/821 cut-off events. For 260/345 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4004 event pairs, 13 based on Foata normal form. 26/812 useless extension candidates. Maximal degree in co-relation 1711. Up to 234 conditions per place. [2022-11-21 09:02:46,262 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 27 selfloop transitions, 10 changer transitions 50/140 dead transitions. [2022-11-21 09:02:46,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 140 transitions, 534 flow [2022-11-21 09:02:46,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 09:02:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 09:02:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 974 transitions. [2022-11-21 09:02:46,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8233305156382079 [2022-11-21 09:02:46,270 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 974 transitions. [2022-11-21 09:02:46,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 974 transitions. [2022-11-21 09:02:46,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:46,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 974 transitions. [2022-11-21 09:02:46,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.92307692307692) internal successors, (974), 13 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:46,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:46,284 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:46,284 INFO L175 Difference]: Start difference. First operand has 95 places, 72 transitions, 170 flow. Second operand 13 states and 974 transitions. [2022-11-21 09:02:46,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 140 transitions, 534 flow [2022-11-21 09:02:46,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 478 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-11-21 09:02:46,305 INFO L231 Difference]: Finished difference. Result has 104 places, 79 transitions, 259 flow [2022-11-21 09:02:46,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=259, PETRI_PLACES=104, PETRI_TRANSITIONS=79} [2022-11-21 09:02:46,307 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2022-11-21 09:02:46,307 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 79 transitions, 259 flow [2022-11-21 09:02:46,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:46,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:46,308 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:46,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:02:46,309 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 09:02:46,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1926818389, now seen corresponding path program 1 times [2022-11-21 09:02:46,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:46,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152269833] [2022-11-21 09:02:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:46,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:46,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:46,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152269833] [2022-11-21 09:02:46,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152269833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:46,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:46,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 09:02:46,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249244093] [2022-11-21 09:02:46,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:46,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:02:46,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:46,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:02:46,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:02:46,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-11-21 09:02:46,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 79 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:46,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:46,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-11-21 09:02:46,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:47,105 INFO L130 PetriNetUnfolder]: 267/771 cut-off events. [2022-11-21 09:02:47,106 INFO L131 PetriNetUnfolder]: For 1556/2685 co-relation queries the response was YES. [2022-11-21 09:02:47,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 771 events. 267/771 cut-off events. For 1556/2685 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4398 event pairs, 13 based on Foata normal form. 20/766 useless extension candidates. Maximal degree in co-relation 2366. Up to 247 conditions per place. [2022-11-21 09:02:47,116 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 22 selfloop transitions, 11 changer transitions 38/124 dead transitions. [2022-11-21 09:02:47,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 124 transitions, 714 flow [2022-11-21 09:02:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 09:02:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 09:02:47,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 599 transitions. [2022-11-21 09:02:47,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8228021978021978 [2022-11-21 09:02:47,121 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 599 transitions. [2022-11-21 09:02:47,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 599 transitions. [2022-11-21 09:02:47,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:47,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 599 transitions. [2022-11-21 09:02:47,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.875) internal successors, (599), 8 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:47,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:47,129 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:47,129 INFO L175 Difference]: Start difference. First operand has 104 places, 79 transitions, 259 flow. Second operand 8 states and 599 transitions. [2022-11-21 09:02:47,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 124 transitions, 714 flow [2022-11-21 09:02:47,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 124 transitions, 688 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-11-21 09:02:47,146 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 301 flow [2022-11-21 09:02:47,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=301, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2022-11-21 09:02:47,149 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2022-11-21 09:02:47,149 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 301 flow [2022-11-21 09:02:47,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:47,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:47,151 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:47,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:02:47,151 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 09:02:47,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash -819910710, now seen corresponding path program 1 times [2022-11-21 09:02:47,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:47,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421383509] [2022-11-21 09:02:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:47,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:47,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421383509] [2022-11-21 09:02:47,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421383509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:47,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:47,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:02:47,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891517605] [2022-11-21 09:02:47,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:47,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:02:47,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:47,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:02:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:02:47,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-11-21 09:02:47,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 301 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:47,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:47,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-11-21 09:02:47,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:47,814 INFO L130 PetriNetUnfolder]: 115/364 cut-off events. [2022-11-21 09:02:47,814 INFO L131 PetriNetUnfolder]: For 927/1259 co-relation queries the response was YES. [2022-11-21 09:02:47,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 364 events. 115/364 cut-off events. For 927/1259 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1497 event pairs, 12 based on Foata normal form. 11/358 useless extension candidates. Maximal degree in co-relation 1242. Up to 113 conditions per place. [2022-11-21 09:02:47,819 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 24 selfloop transitions, 7 changer transitions 37/121 dead transitions. [2022-11-21 09:02:47,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 121 transitions, 754 flow [2022-11-21 09:02:47,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:02:47,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:02:47,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 733 transitions. [2022-11-21 09:02:47,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8054945054945055 [2022-11-21 09:02:47,823 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 733 transitions. [2022-11-21 09:02:47,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 733 transitions. [2022-11-21 09:02:47,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:47,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 733 transitions. [2022-11-21 09:02:47,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:47,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:47,830 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:47,830 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 301 flow. Second operand 10 states and 733 transitions. [2022-11-21 09:02:47,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 121 transitions, 754 flow [2022-11-21 09:02:47,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 121 transitions, 690 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-11-21 09:02:47,838 INFO L231 Difference]: Finished difference. Result has 108 places, 79 transitions, 290 flow [2022-11-21 09:02:47,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=108, PETRI_TRANSITIONS=79} [2022-11-21 09:02:47,839 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 25 predicate places. [2022-11-21 09:02:47,840 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 79 transitions, 290 flow [2022-11-21 09:02:47,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:47,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:47,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:47,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:02:47,841 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 09:02:47,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2127193616, now seen corresponding path program 1 times [2022-11-21 09:02:47,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:47,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616129352] [2022-11-21 09:02:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:47,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:48,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:48,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616129352] [2022-11-21 09:02:48,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616129352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:48,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:48,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 09:02:48,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855232330] [2022-11-21 09:02:48,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:48,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:02:48,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:48,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:02:48,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:02:48,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-11-21 09:02:48,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 79 transitions, 290 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:48,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:48,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-11-21 09:02:48,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:48,482 INFO L130 PetriNetUnfolder]: 43/288 cut-off events. [2022-11-21 09:02:48,482 INFO L131 PetriNetUnfolder]: For 479/532 co-relation queries the response was YES. [2022-11-21 09:02:48,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 288 events. 43/288 cut-off events. For 479/532 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1248 event pairs, 1 based on Foata normal form. 15/300 useless extension candidates. Maximal degree in co-relation 741. Up to 51 conditions per place. [2022-11-21 09:02:48,485 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 19 selfloop transitions, 5 changer transitions 39/116 dead transitions. [2022-11-21 09:02:48,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 689 flow [2022-11-21 09:02:48,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 09:02:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 09:02:48,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 942 transitions. [2022-11-21 09:02:48,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7962806424344886 [2022-11-21 09:02:48,489 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 942 transitions. [2022-11-21 09:02:48,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 942 transitions. [2022-11-21 09:02:48,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:48,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 942 transitions. [2022-11-21 09:02:48,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.46153846153847) internal successors, (942), 13 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:48,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:48,502 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:48,502 INFO L175 Difference]: Start difference. First operand has 108 places, 79 transitions, 290 flow. Second operand 13 states and 942 transitions. [2022-11-21 09:02:48,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 689 flow [2022-11-21 09:02:48,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 116 transitions, 634 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-11-21 09:02:48,508 INFO L231 Difference]: Finished difference. Result has 114 places, 72 transitions, 241 flow [2022-11-21 09:02:48,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=241, PETRI_PLACES=114, PETRI_TRANSITIONS=72} [2022-11-21 09:02:48,511 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 31 predicate places. [2022-11-21 09:02:48,512 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 72 transitions, 241 flow [2022-11-21 09:02:48,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:48,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:48,513 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:48,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:02:48,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 09:02:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:48,515 INFO L85 PathProgramCache]: Analyzing trace with hash -228516212, now seen corresponding path program 1 times [2022-11-21 09:02:48,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:48,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429538643] [2022-11-21 09:02:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:48,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:48,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:48,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429538643] [2022-11-21 09:02:48,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429538643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:48,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:48,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:02:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828018075] [2022-11-21 09:02:48,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:48,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:02:48,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:02:48,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:02:48,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-11-21 09:02:48,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 72 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:48,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:48,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-11-21 09:02:48,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:48,972 INFO L130 PetriNetUnfolder]: 94/315 cut-off events. [2022-11-21 09:02:48,972 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-11-21 09:02:48,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 315 events. 94/315 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1470 event pairs, 2 based on Foata normal form. 8/317 useless extension candidates. Maximal degree in co-relation 595. Up to 86 conditions per place. [2022-11-21 09:02:48,975 INFO L137 encePairwiseOnDemand]: 82/91 looper letters, 13 selfloop transitions, 5 changer transitions 21/98 dead transitions. [2022-11-21 09:02:48,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 98 transitions, 373 flow [2022-11-21 09:02:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:02:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:02:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2022-11-21 09:02:48,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8632478632478633 [2022-11-21 09:02:48,979 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2022-11-21 09:02:48,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2022-11-21 09:02:48,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:48,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2022-11-21 09:02:48,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:48,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:48,986 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:48,986 INFO L175 Difference]: Start difference. First operand has 114 places, 72 transitions, 241 flow. Second operand 9 states and 707 transitions. [2022-11-21 09:02:48,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 98 transitions, 373 flow [2022-11-21 09:02:48,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 314 flow, removed 17 selfloop flow, removed 19 redundant places. [2022-11-21 09:02:48,990 INFO L231 Difference]: Finished difference. Result has 101 places, 74 transitions, 232 flow [2022-11-21 09:02:48,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=101, PETRI_TRANSITIONS=74} [2022-11-21 09:02:48,994 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 18 predicate places. [2022-11-21 09:02:48,995 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 74 transitions, 232 flow [2022-11-21 09:02:48,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:48,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:48,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:48,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 09:02:48,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 09:02:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash 103065487, now seen corresponding path program 1 times [2022-11-21 09:02:48,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:48,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746106083] [2022-11-21 09:02:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:48,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:49,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:49,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746106083] [2022-11-21 09:02:49,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746106083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:49,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:49,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:02:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105347161] [2022-11-21 09:02:49,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:49,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:02:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:02:49,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:02:49,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-11-21 09:02:49,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 74 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:49,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:49,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-11-21 09:02:49,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:49,463 INFO L130 PetriNetUnfolder]: 43/199 cut-off events. [2022-11-21 09:02:49,463 INFO L131 PetriNetUnfolder]: For 260/277 co-relation queries the response was YES. [2022-11-21 09:02:49,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 199 events. 43/199 cut-off events. For 260/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 693 event pairs, 0 based on Foata normal form. 7/205 useless extension candidates. Maximal degree in co-relation 521. Up to 65 conditions per place. [2022-11-21 09:02:49,465 INFO L137 encePairwiseOnDemand]: 82/91 looper letters, 9 selfloop transitions, 7 changer transitions 25/100 dead transitions. [2022-11-21 09:02:49,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 100 transitions, 495 flow [2022-11-21 09:02:49,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:02:49,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:02:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 783 transitions. [2022-11-21 09:02:49,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8604395604395605 [2022-11-21 09:02:49,469 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 783 transitions. [2022-11-21 09:02:49,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 783 transitions. [2022-11-21 09:02:49,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:49,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 783 transitions. [2022-11-21 09:02:49,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.3) internal successors, (783), 10 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:49,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:49,476 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:49,476 INFO L175 Difference]: Start difference. First operand has 101 places, 74 transitions, 232 flow. Second operand 10 states and 783 transitions. [2022-11-21 09:02:49,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 100 transitions, 495 flow [2022-11-21 09:02:49,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 464 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-21 09:02:49,481 INFO L231 Difference]: Finished difference. Result has 105 places, 74 transitions, 250 flow [2022-11-21 09:02:49,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=250, PETRI_PLACES=105, PETRI_TRANSITIONS=74} [2022-11-21 09:02:49,482 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 22 predicate places. [2022-11-21 09:02:49,482 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 74 transitions, 250 flow [2022-11-21 09:02:49,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:49,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:49,483 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:49,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 09:02:49,484 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 09:02:49,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:49,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1675532424, now seen corresponding path program 1 times [2022-11-21 09:02:49,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:49,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378234781] [2022-11-21 09:02:49,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:49,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:49,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:49,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378234781] [2022-11-21 09:02:49,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378234781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:49,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:49,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 09:02:49,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666908434] [2022-11-21 09:02:49,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:49,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:02:49,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:49,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:02:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:02:49,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-11-21 09:02:49,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 74 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:49,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:49,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-11-21 09:02:49,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:49,929 INFO L130 PetriNetUnfolder]: 5/87 cut-off events. [2022-11-21 09:02:49,929 INFO L131 PetriNetUnfolder]: For 196/219 co-relation queries the response was YES. [2022-11-21 09:02:49,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 87 events. 5/87 cut-off events. For 196/219 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 6/93 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2022-11-21 09:02:49,930 INFO L137 encePairwiseOnDemand]: 82/91 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2022-11-21 09:02:49,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 77 transitions, 358 flow [2022-11-21 09:02:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 09:02:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 09:02:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 841 transitions. [2022-11-21 09:02:49,934 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8401598401598401 [2022-11-21 09:02:49,934 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 841 transitions. [2022-11-21 09:02:49,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 841 transitions. [2022-11-21 09:02:49,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:49,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 841 transitions. [2022-11-21 09:02:49,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.45454545454545) internal successors, (841), 11 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:49,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:49,941 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:49,941 INFO L175 Difference]: Start difference. First operand has 105 places, 74 transitions, 250 flow. Second operand 11 states and 841 transitions. [2022-11-21 09:02:49,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 77 transitions, 358 flow [2022-11-21 09:02:49,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 77 transitions, 291 flow, removed 23 selfloop flow, removed 10 redundant places. [2022-11-21 09:02:49,945 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2022-11-21 09:02:49,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2022-11-21 09:02:49,948 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2022-11-21 09:02:49,949 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2022-11-21 09:02:49,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:49,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-21 09:02:49,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-21 09:02:49,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-21 09:02:49,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-21 09:02:49,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 09:02:49,954 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:49,970 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 09:02:49,970 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 09:02:49,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:02:49 BasicIcfg [2022-11-21 09:02:49,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 09:02:49,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 09:02:49,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 09:02:49,980 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 09:02:49,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:43" (3/4) ... [2022-11-21 09:02:49,985 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 09:02:49,995 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-21 09:02:49,995 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-21 09:02:49,995 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-21 09:02:50,004 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-21 09:02:50,005 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 09:02:50,005 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 09:02:50,005 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 09:02:50,060 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 09:02:50,060 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 09:02:50,061 INFO L158 Benchmark]: Toolchain (without parser) took 8126.01ms. Allocated memory was 153.1MB in the beginning and 241.2MB in the end (delta: 88.1MB). Free memory was 111.6MB in the beginning and 90.3MB in the end (delta: 21.4MB). Peak memory consumption was 111.1MB. Max. memory is 16.1GB. [2022-11-21 09:02:50,061 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:02:50,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 706.63ms. Allocated memory is still 153.1MB. Free memory was 111.6MB in the beginning and 91.5MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-21 09:02:50,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.90ms. Allocated memory is still 153.1MB. Free memory was 91.5MB in the beginning and 89.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:02:50,062 INFO L158 Benchmark]: Boogie Preprocessor took 43.84ms. Allocated memory is still 153.1MB. Free memory was 89.4MB in the beginning and 87.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:02:50,063 INFO L158 Benchmark]: RCFGBuilder took 544.11ms. Allocated memory is still 153.1MB. Free memory was 87.9MB in the beginning and 74.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-21 09:02:50,063 INFO L158 Benchmark]: TraceAbstraction took 6655.24ms. Allocated memory was 153.1MB in the beginning and 241.2MB in the end (delta: 88.1MB). Free memory was 73.9MB in the beginning and 92.4MB in the end (delta: -18.5MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2022-11-21 09:02:50,063 INFO L158 Benchmark]: Witness Printer took 80.36ms. Allocated memory is still 241.2MB. Free memory was 92.4MB in the beginning and 90.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:02:50,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 706.63ms. Allocated memory is still 153.1MB. Free memory was 111.6MB in the beginning and 91.5MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.90ms. Allocated memory is still 153.1MB. Free memory was 91.5MB in the beginning and 89.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.84ms. Allocated memory is still 153.1MB. Free memory was 89.4MB in the beginning and 87.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 544.11ms. Allocated memory is still 153.1MB. Free memory was 87.9MB in the beginning and 74.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6655.24ms. Allocated memory was 153.1MB in the beginning and 241.2MB in the end (delta: 88.1MB). Free memory was 73.9MB in the beginning and 92.4MB in the end (delta: -18.5MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. * Witness Printer took 80.36ms. Allocated memory is still 241.2MB. Free memory was 92.4MB in the beginning and 90.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 328 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 328 mSDsluCounter, 507 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 389 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 118 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=301occurred in iteration=3, InterpolantAutomatonStates: 83, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 478 NumberOfCodeBlocks, 478 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 470 ConstructedInterpolants, 0 QuantifiedInterpolants, 1646 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 09:02:50,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c542c76b-5bbd-45cc-bd4e-fc859606c987/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE