./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ --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 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 --- 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-dbf71c6-m [2022-10-17 11:04:31,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:04:31,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:04:31,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:04:31,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:04:31,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:04:31,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:04:31,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:04:31,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:04:31,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:04:31,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:04:31,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:04:31,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:04:31,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:04:31,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:04:31,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:04:31,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:04:31,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:04:31,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:04:31,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:04:31,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:04:31,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:04:31,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:04:31,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:04:31,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:04:31,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:04:31,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:04:31,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:04:31,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:04:31,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:04:31,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:04:31,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:04:31,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:04:31,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:04:31,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:04:31,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:04:31,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:04:31,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:04:31,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:04:31,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:04:31,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:04:31,820 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:04:31,863 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:04:31,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:04:31,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:04:31,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:04:31,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:04:31,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:04:31,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:04:31,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:04:31,867 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:04:31,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:04:31,868 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:04:31,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:04:31,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:04:31,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:04:31,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:04:31,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:04:31,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:04:31,870 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:04:31,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:04:31,870 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:04:31,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:04:31,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:04:31,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:04:31,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:04:31,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:04:31,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:04:31,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:04:31,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:04:31,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:04:31,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:04:31,874 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:04:31,874 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:04:31,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:04:31,875 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_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 [2022-10-17 11:04:32,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:04:32,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:04:32,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:04:32,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:04:32,203 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:04:32,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-10-17 11:04:32,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/data/04a6ea618/511ac32259e74ae3adb8524a557d001d/FLAG8d5c9e2a5 [2022-10-17 11:04:32,775 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:04:32,776 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-10-17 11:04:32,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/data/04a6ea618/511ac32259e74ae3adb8524a557d001d/FLAG8d5c9e2a5 [2022-10-17 11:04:33,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/data/04a6ea618/511ac32259e74ae3adb8524a557d001d [2022-10-17 11:04:33,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:04:33,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:04:33,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:04:33,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:04:33,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:04:33,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4ebe60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33, skipping insertion in model container [2022-10-17 11:04:33,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:04:33,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:04:33,409 WARN L230 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_49825184-906c-487e-ac02-7f8904be6263/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2022-10-17 11:04:33,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:04:33,578 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:04:33,590 WARN L230 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_49825184-906c-487e-ac02-7f8904be6263/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2022-10-17 11:04:33,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:04:33,656 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:04:33,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33 WrapperNode [2022-10-17 11:04:33,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:04:33,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:04:33,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:04:33,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:04:33,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,707 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2022-10-17 11:04:33,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:04:33,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:04:33,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:04:33,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:04:33,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,731 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:04:33,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:04:33,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:04:33,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:04:33,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:04:33,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:04:33,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:04:33,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:04:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:04:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-10-17 11:04:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:04:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:04:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-10-17 11:04:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-10-17 11:04:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:04:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:04:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:04:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:04:33,849 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 11:04:33,969 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:04:33,971 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:04:34,272 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:04:34,283 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:04:34,283 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 11:04:34,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:04:34 BoogieIcfgContainer [2022-10-17 11:04:34,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:04:34,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:04:34,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:04:34,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:04:34,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:04:33" (1/3) ... [2022-10-17 11:04:34,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155784d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:04:34, skipping insertion in model container [2022-10-17 11:04:34,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (2/3) ... [2022-10-17 11:04:34,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155784d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:04:34, skipping insertion in model container [2022-10-17 11:04:34,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:04:34" (3/3) ... [2022-10-17 11:04:34,319 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-10-17 11:04:34,336 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 11:04:34,346 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:04:34,359 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-10-17 11:04:34,359 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 11:04:34,547 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 11:04:34,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 183 transitions, 371 flow [2022-10-17 11:04:34,719 INFO L130 PetriNetUnfolder]: 8/186 cut-off events. [2022-10-17 11:04:34,719 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 11:04:34,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 186 events. 8/186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 163 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2022-10-17 11:04:34,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 183 transitions, 371 flow [2022-10-17 11:04:34,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 181 transitions, 365 flow [2022-10-17 11:04:34,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:04:34,763 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;@473d82e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:04:34,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 11:04:34,807 INFO L130 PetriNetUnfolder]: 2/99 cut-off events. [2022-10-17 11:04:34,808 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 11:04:34,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:34,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:34,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:04:34,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:34,815 INFO L85 PathProgramCache]: Analyzing trace with hash -930805020, now seen corresponding path program 1 times [2022-10-17 11:04:34,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:34,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860632079] [2022-10-17 11:04:34,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:34,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:35,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:35,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860632079] [2022-10-17 11:04:35,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860632079] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:35,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:35,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 11:04:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883394469] [2022-10-17 11:04:35,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:35,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 11:04:35,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:35,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 11:04:35,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:04:35,725 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 183 [2022-10-17 11:04:35,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 181 transitions, 365 flow. Second operand has 8 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 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) [2022-10-17 11:04:35,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:35,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 183 [2022-10-17 11:04:35,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:36,326 INFO L130 PetriNetUnfolder]: 95/1143 cut-off events. [2022-10-17 11:04:36,326 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-10-17 11:04:36,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 1143 events. 95/1143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7391 event pairs, 25 based on Foata normal form. 93/1163 useless extension candidates. Maximal degree in co-relation 1332. Up to 89 conditions per place. [2022-10-17 11:04:36,341 INFO L137 encePairwiseOnDemand]: 161/183 looper letters, 52 selfloop transitions, 38 changer transitions 11/239 dead transitions. [2022-10-17 11:04:36,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 239 transitions, 673 flow [2022-10-17 11:04:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-17 11:04:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-10-17 11:04:36,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2885 transitions. [2022-10-17 11:04:36,374 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8297382801265458 [2022-10-17 11:04:36,376 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2885 transitions. [2022-10-17 11:04:36,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2885 transitions. [2022-10-17 11:04:36,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:36,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2885 transitions. [2022-10-17 11:04:36,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 151.8421052631579) internal successors, (2885), 19 states have internal predecessors, (2885), 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) [2022-10-17 11:04:36,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 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) [2022-10-17 11:04:36,420 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 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) [2022-10-17 11:04:36,422 INFO L175 Difference]: Start difference. First operand has 177 places, 181 transitions, 365 flow. Second operand 19 states and 2885 transitions. [2022-10-17 11:04:36,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 239 transitions, 673 flow [2022-10-17 11:04:36,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 239 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 11:04:36,437 INFO L231 Difference]: Finished difference. Result has 196 places, 197 transitions, 514 flow [2022-10-17 11:04:36,439 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=514, PETRI_PLACES=196, PETRI_TRANSITIONS=197} [2022-10-17 11:04:36,444 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 19 predicate places. [2022-10-17 11:04:36,444 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 197 transitions, 514 flow [2022-10-17 11:04:36,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 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) [2022-10-17 11:04:36,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:36,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:36,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:04:36,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:04:36,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:36,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1095711902, now seen corresponding path program 1 times [2022-10-17 11:04:36,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:36,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905583955] [2022-10-17 11:04:36,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:36,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:36,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:36,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905583955] [2022-10-17 11:04:36,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905583955] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:36,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:36,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:04:36,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874018009] [2022-10-17 11:04:36,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:36,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:04:36,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:36,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:04:36,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:04:36,858 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 183 [2022-10-17 11:04:36,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 197 transitions, 514 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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) [2022-10-17 11:04:36,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:36,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 183 [2022-10-17 11:04:36,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:37,067 INFO L130 PetriNetUnfolder]: 27/508 cut-off events. [2022-10-17 11:04:37,067 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-10-17 11:04:37,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 508 events. 27/508 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2033 event pairs, 11 based on Foata normal form. 6/499 useless extension candidates. Maximal degree in co-relation 683. Up to 60 conditions per place. [2022-10-17 11:04:37,076 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 23 selfloop transitions, 9 changer transitions 2/186 dead transitions. [2022-10-17 11:04:37,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 186 transitions, 511 flow [2022-10-17 11:04:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:04:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 11:04:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 765 transitions. [2022-10-17 11:04:37,079 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8360655737704918 [2022-10-17 11:04:37,080 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 765 transitions. [2022-10-17 11:04:37,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 765 transitions. [2022-10-17 11:04:37,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:37,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 765 transitions. [2022-10-17 11:04:37,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 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) [2022-10-17 11:04:37,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 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) [2022-10-17 11:04:37,088 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 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) [2022-10-17 11:04:37,088 INFO L175 Difference]: Start difference. First operand has 196 places, 197 transitions, 514 flow. Second operand 5 states and 765 transitions. [2022-10-17 11:04:37,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 186 transitions, 511 flow [2022-10-17 11:04:37,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 186 transitions, 505 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-10-17 11:04:37,099 INFO L231 Difference]: Finished difference. Result has 187 places, 179 transitions, 456 flow [2022-10-17 11:04:37,099 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=456, PETRI_PLACES=187, PETRI_TRANSITIONS=179} [2022-10-17 11:04:37,100 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 10 predicate places. [2022-10-17 11:04:37,100 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 179 transitions, 456 flow [2022-10-17 11:04:37,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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) [2022-10-17 11:04:37,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:37,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:37,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:04:37,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:04:37,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:37,104 INFO L85 PathProgramCache]: Analyzing trace with hash 621951114, now seen corresponding path program 1 times [2022-10-17 11:04:37,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:37,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382341680] [2022-10-17 11:04:37,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:37,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:37,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382341680] [2022-10-17 11:04:37,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382341680] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:37,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:37,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 11:04:37,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464024013] [2022-10-17 11:04:37,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:37,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 11:04:37,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:37,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 11:04:37,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:04:37,469 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 183 [2022-10-17 11:04:37,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 179 transitions, 456 flow. Second operand has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 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) [2022-10-17 11:04:37,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:37,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 183 [2022-10-17 11:04:37,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:37,769 INFO L130 PetriNetUnfolder]: 33/679 cut-off events. [2022-10-17 11:04:37,769 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-10-17 11:04:37,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 679 events. 33/679 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3055 event pairs, 6 based on Foata normal form. 1/664 useless extension candidates. Maximal degree in co-relation 919. Up to 59 conditions per place. [2022-10-17 11:04:37,774 INFO L137 encePairwiseOnDemand]: 168/183 looper letters, 39 selfloop transitions, 25 changer transitions 0/202 dead transitions. [2022-10-17 11:04:37,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 202 transitions, 634 flow [2022-10-17 11:04:37,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 11:04:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 11:04:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2385 transitions. [2022-10-17 11:04:37,782 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8145491803278688 [2022-10-17 11:04:37,782 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2385 transitions. [2022-10-17 11:04:37,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2385 transitions. [2022-10-17 11:04:37,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:37,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2385 transitions. [2022-10-17 11:04:37,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 149.0625) internal successors, (2385), 16 states have internal predecessors, (2385), 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) [2022-10-17 11:04:37,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 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) [2022-10-17 11:04:37,803 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 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) [2022-10-17 11:04:37,803 INFO L175 Difference]: Start difference. First operand has 187 places, 179 transitions, 456 flow. Second operand 16 states and 2385 transitions. [2022-10-17 11:04:37,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 202 transitions, 634 flow [2022-10-17 11:04:37,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 202 transitions, 631 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 11:04:37,817 INFO L231 Difference]: Finished difference. Result has 200 places, 185 transitions, 534 flow [2022-10-17 11:04:37,817 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=534, PETRI_PLACES=200, PETRI_TRANSITIONS=185} [2022-10-17 11:04:37,820 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 23 predicate places. [2022-10-17 11:04:37,820 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 185 transitions, 534 flow [2022-10-17 11:04:37,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 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) [2022-10-17 11:04:37,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:37,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:37,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:04:37,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:04:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:37,823 INFO L85 PathProgramCache]: Analyzing trace with hash 280756634, now seen corresponding path program 1 times [2022-10-17 11:04:37,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:37,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47701443] [2022-10-17 11:04:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:37,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:38,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:38,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:38,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47701443] [2022-10-17 11:04:38,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47701443] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:38,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:38,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-10-17 11:04:38,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771132625] [2022-10-17 11:04:38,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:38,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 11:04:38,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 11:04:38,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-10-17 11:04:38,226 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 183 [2022-10-17 11:04:38,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 185 transitions, 534 flow. Second operand has 13 states, 13 states have (on average 132.15384615384616) internal successors, (1718), 13 states have internal predecessors, (1718), 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) [2022-10-17 11:04:38,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:38,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 183 [2022-10-17 11:04:38,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:39,252 INFO L130 PetriNetUnfolder]: 119/847 cut-off events. [2022-10-17 11:04:39,252 INFO L131 PetriNetUnfolder]: For 137/146 co-relation queries the response was YES. [2022-10-17 11:04:39,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 847 events. 119/847 cut-off events. For 137/146 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4391 event pairs, 1 based on Foata normal form. 6/825 useless extension candidates. Maximal degree in co-relation 1376. Up to 47 conditions per place. [2022-10-17 11:04:39,261 INFO L137 encePairwiseOnDemand]: 164/183 looper letters, 109 selfloop transitions, 50 changer transitions 0/283 dead transitions. [2022-10-17 11:04:39,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 283 transitions, 1133 flow [2022-10-17 11:04:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-17 11:04:39,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-10-17 11:04:39,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3532 transitions. [2022-10-17 11:04:39,274 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7423287095418243 [2022-10-17 11:04:39,274 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3532 transitions. [2022-10-17 11:04:39,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3532 transitions. [2022-10-17 11:04:39,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:39,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3532 transitions. [2022-10-17 11:04:39,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 135.84615384615384) internal successors, (3532), 26 states have internal predecessors, (3532), 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) [2022-10-17 11:04:39,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 183.0) internal successors, (4941), 27 states have internal predecessors, (4941), 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) [2022-10-17 11:04:39,305 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 183.0) internal successors, (4941), 27 states have internal predecessors, (4941), 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) [2022-10-17 11:04:39,306 INFO L175 Difference]: Start difference. First operand has 200 places, 185 transitions, 534 flow. Second operand 26 states and 3532 transitions. [2022-10-17 11:04:39,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 283 transitions, 1133 flow [2022-10-17 11:04:39,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 283 transitions, 1092 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-10-17 11:04:39,320 INFO L231 Difference]: Finished difference. Result has 224 places, 211 transitions, 747 flow [2022-10-17 11:04:39,320 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=747, PETRI_PLACES=224, PETRI_TRANSITIONS=211} [2022-10-17 11:04:39,322 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 47 predicate places. [2022-10-17 11:04:39,322 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 211 transitions, 747 flow [2022-10-17 11:04:39,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 132.15384615384616) internal successors, (1718), 13 states have internal predecessors, (1718), 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) [2022-10-17 11:04:39,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:39,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:39,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:04:39,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:04:39,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash 979637833, now seen corresponding path program 1 times [2022-10-17 11:04:39,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:39,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467418104] [2022-10-17 11:04:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:39,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:39,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:39,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467418104] [2022-10-17 11:04:39,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467418104] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:39,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:39,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 11:04:39,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85512478] [2022-10-17 11:04:39,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:39,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 11:04:39,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:39,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 11:04:39,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:04:39,583 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-10-17 11:04:39,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 211 transitions, 747 flow. Second operand has 8 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 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) [2022-10-17 11:04:39,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:39,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-10-17 11:04:39,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:39,948 INFO L130 PetriNetUnfolder]: 44/730 cut-off events. [2022-10-17 11:04:39,948 INFO L131 PetriNetUnfolder]: For 259/262 co-relation queries the response was YES. [2022-10-17 11:04:39,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 730 events. 44/730 cut-off events. For 259/262 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3269 event pairs, 6 based on Foata normal form. 4/709 useless extension candidates. Maximal degree in co-relation 1182. Up to 55 conditions per place. [2022-10-17 11:04:39,954 INFO L137 encePairwiseOnDemand]: 171/183 looper letters, 59 selfloop transitions, 34 changer transitions 0/231 dead transitions. [2022-10-17 11:04:39,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 231 transitions, 979 flow [2022-10-17 11:04:39,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 11:04:39,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-10-17 11:04:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1756 transitions. [2022-10-17 11:04:39,960 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7996357012750456 [2022-10-17 11:04:39,961 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1756 transitions. [2022-10-17 11:04:39,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1756 transitions. [2022-10-17 11:04:39,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:39,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1756 transitions. [2022-10-17 11:04:39,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.33333333333334) internal successors, (1756), 12 states have internal predecessors, (1756), 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) [2022-10-17 11:04:39,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-10-17 11:04:39,975 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-10-17 11:04:39,975 INFO L175 Difference]: Start difference. First operand has 224 places, 211 transitions, 747 flow. Second operand 12 states and 1756 transitions. [2022-10-17 11:04:39,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 231 transitions, 979 flow [2022-10-17 11:04:39,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 231 transitions, 953 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-10-17 11:04:39,986 INFO L231 Difference]: Finished difference. Result has 229 places, 209 transitions, 781 flow [2022-10-17 11:04:39,987 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=781, PETRI_PLACES=229, PETRI_TRANSITIONS=209} [2022-10-17 11:04:39,989 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 52 predicate places. [2022-10-17 11:04:39,989 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 209 transitions, 781 flow [2022-10-17 11:04:39,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 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) [2022-10-17 11:04:39,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:39,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:39,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:04:39,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:04:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash -590826818, now seen corresponding path program 1 times [2022-10-17 11:04:39,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:39,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732459894] [2022-10-17 11:04:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:39,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:40,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:40,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732459894] [2022-10-17 11:04:40,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732459894] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:40,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:40,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-10-17 11:04:40,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010181425] [2022-10-17 11:04:40,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:40,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 11:04:40,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:40,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 11:04:40,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-10-17 11:04:40,469 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 183 [2022-10-17 11:04:40,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 209 transitions, 781 flow. Second operand has 13 states, 13 states have (on average 136.46153846153845) internal successors, (1774), 13 states have internal predecessors, (1774), 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) [2022-10-17 11:04:40,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:40,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 183 [2022-10-17 11:04:40,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:41,546 INFO L130 PetriNetUnfolder]: 159/1446 cut-off events. [2022-10-17 11:04:41,546 INFO L131 PetriNetUnfolder]: For 632/662 co-relation queries the response was YES. [2022-10-17 11:04:41,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 1446 events. 159/1446 cut-off events. For 632/662 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9702 event pairs, 41 based on Foata normal form. 29/1421 useless extension candidates. Maximal degree in co-relation 2563. Up to 107 conditions per place. [2022-10-17 11:04:41,559 INFO L137 encePairwiseOnDemand]: 163/183 looper letters, 71 selfloop transitions, 55 changer transitions 53/319 dead transitions. [2022-10-17 11:04:41,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 319 transitions, 1610 flow [2022-10-17 11:04:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-10-17 11:04:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-10-17 11:04:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4834 transitions. [2022-10-17 11:04:41,575 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7547228727556596 [2022-10-17 11:04:41,575 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4834 transitions. [2022-10-17 11:04:41,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4834 transitions. [2022-10-17 11:04:41,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:41,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4834 transitions. [2022-10-17 11:04:41,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 138.11428571428573) internal successors, (4834), 35 states have internal predecessors, (4834), 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) [2022-10-17 11:04:41,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 183.0) internal successors, (6588), 36 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:41,627 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 183.0) internal successors, (6588), 36 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:41,628 INFO L175 Difference]: Start difference. First operand has 229 places, 209 transitions, 781 flow. Second operand 35 states and 4834 transitions. [2022-10-17 11:04:41,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 319 transitions, 1610 flow [2022-10-17 11:04:41,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 319 transitions, 1491 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-10-17 11:04:41,646 INFO L231 Difference]: Finished difference. Result has 269 places, 236 transitions, 989 flow [2022-10-17 11:04:41,647 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=989, PETRI_PLACES=269, PETRI_TRANSITIONS=236} [2022-10-17 11:04:41,649 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 92 predicate places. [2022-10-17 11:04:41,650 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 236 transitions, 989 flow [2022-10-17 11:04:41,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 136.46153846153845) internal successors, (1774), 13 states have internal predecessors, (1774), 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) [2022-10-17 11:04:41,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:41,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:41,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:04:41,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:04:41,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:41,652 INFO L85 PathProgramCache]: Analyzing trace with hash 485021160, now seen corresponding path program 1 times [2022-10-17 11:04:41,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:41,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21684144] [2022-10-17 11:04:41,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:41,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:42,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:42,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21684144] [2022-10-17 11:04:42,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21684144] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:42,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:42,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 11:04:42,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356096910] [2022-10-17 11:04:42,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:42,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 11:04:42,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:42,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 11:04:42,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:04:42,230 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-10-17 11:04:42,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 236 transitions, 989 flow. Second operand has 8 states, 8 states have (on average 143.125) internal successors, (1145), 8 states have internal predecessors, (1145), 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) [2022-10-17 11:04:42,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:42,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-10-17 11:04:42,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:42,468 INFO L130 PetriNetUnfolder]: 51/751 cut-off events. [2022-10-17 11:04:42,468 INFO L131 PetriNetUnfolder]: For 589/592 co-relation queries the response was YES. [2022-10-17 11:04:42,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 751 events. 51/751 cut-off events. For 589/592 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3754 event pairs, 10 based on Foata normal form. 4/725 useless extension candidates. Maximal degree in co-relation 1460. Up to 57 conditions per place. [2022-10-17 11:04:42,476 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 28 selfloop transitions, 9 changer transitions 5/233 dead transitions. [2022-10-17 11:04:42,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 233 transitions, 1012 flow [2022-10-17 11:04:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:04:42,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 11:04:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 877 transitions. [2022-10-17 11:04:42,482 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7987249544626593 [2022-10-17 11:04:42,482 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 877 transitions. [2022-10-17 11:04:42,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 877 transitions. [2022-10-17 11:04:42,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:42,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 877 transitions. [2022-10-17 11:04:42,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.16666666666666) internal successors, (877), 6 states have internal predecessors, (877), 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) [2022-10-17 11:04:42,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-10-17 11:04:42,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-10-17 11:04:42,492 INFO L175 Difference]: Start difference. First operand has 269 places, 236 transitions, 989 flow. Second operand 6 states and 877 transitions. [2022-10-17 11:04:42,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 233 transitions, 1012 flow [2022-10-17 11:04:42,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 233 transitions, 959 flow, removed 15 selfloop flow, removed 13 redundant places. [2022-10-17 11:04:42,505 INFO L231 Difference]: Finished difference. Result has 246 places, 224 transitions, 869 flow [2022-10-17 11:04:42,506 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=869, PETRI_PLACES=246, PETRI_TRANSITIONS=224} [2022-10-17 11:04:42,507 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 69 predicate places. [2022-10-17 11:04:42,507 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 224 transitions, 869 flow [2022-10-17 11:04:42,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.125) internal successors, (1145), 8 states have internal predecessors, (1145), 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) [2022-10-17 11:04:42,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:42,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:42,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 11:04:42,508 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:04:42,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:42,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1898754036, now seen corresponding path program 1 times [2022-10-17 11:04:42,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:42,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169740130] [2022-10-17 11:04:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:42,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:42,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:42,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169740130] [2022-10-17 11:04:42,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169740130] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:42,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:42,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 11:04:42,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321948025] [2022-10-17 11:04:42,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:42,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 11:04:42,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:42,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 11:04:42,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:04:42,779 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-10-17 11:04:42,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 224 transitions, 869 flow. Second operand has 8 states, 8 states have (on average 142.875) internal successors, (1143), 8 states have internal predecessors, (1143), 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) [2022-10-17 11:04:42,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:42,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-10-17 11:04:42,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:43,122 INFO L130 PetriNetUnfolder]: 57/786 cut-off events. [2022-10-17 11:04:43,123 INFO L131 PetriNetUnfolder]: For 528/540 co-relation queries the response was YES. [2022-10-17 11:04:43,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 786 events. 57/786 cut-off events. For 528/540 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3793 event pairs, 8 based on Foata normal form. 4/757 useless extension candidates. Maximal degree in co-relation 1460. Up to 44 conditions per place. [2022-10-17 11:04:43,130 INFO L137 encePairwiseOnDemand]: 170/183 looper letters, 48 selfloop transitions, 34 changer transitions 0/237 dead transitions. [2022-10-17 11:04:43,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 237 transitions, 1075 flow [2022-10-17 11:04:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 11:04:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-10-17 11:04:43,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1744 transitions. [2022-10-17 11:04:43,134 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7941712204007286 [2022-10-17 11:04:43,134 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1744 transitions. [2022-10-17 11:04:43,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1744 transitions. [2022-10-17 11:04:43,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:43,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1744 transitions. [2022-10-17 11:04:43,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 145.33333333333334) internal successors, (1744), 12 states have internal predecessors, (1744), 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) [2022-10-17 11:04:43,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-10-17 11:04:43,147 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-10-17 11:04:43,148 INFO L175 Difference]: Start difference. First operand has 246 places, 224 transitions, 869 flow. Second operand 12 states and 1744 transitions. [2022-10-17 11:04:43,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 237 transitions, 1075 flow [2022-10-17 11:04:43,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 237 transitions, 1032 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-10-17 11:04:43,162 INFO L231 Difference]: Finished difference. Result has 244 places, 222 transitions, 888 flow [2022-10-17 11:04:43,163 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=888, PETRI_PLACES=244, PETRI_TRANSITIONS=222} [2022-10-17 11:04:43,165 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 67 predicate places. [2022-10-17 11:04:43,165 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 222 transitions, 888 flow [2022-10-17 11:04:43,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.875) internal successors, (1143), 8 states have internal predecessors, (1143), 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) [2022-10-17 11:04:43,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:43,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:43,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 11:04:43,167 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:04:43,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:43,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1681707266, now seen corresponding path program 1 times [2022-10-17 11:04:43,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:43,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538311478] [2022-10-17 11:04:43,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:43,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:43,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:43,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538311478] [2022-10-17 11:04:43,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538311478] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:43,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:43,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:04:43,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576975825] [2022-10-17 11:04:43,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:43,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:04:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:04:43,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:04:43,545 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 183 [2022-10-17 11:04:43,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 222 transitions, 888 flow. Second operand has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:43,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:43,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 183 [2022-10-17 11:04:43,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:43,686 INFO L130 PetriNetUnfolder]: 22/434 cut-off events. [2022-10-17 11:04:43,686 INFO L131 PetriNetUnfolder]: For 220/221 co-relation queries the response was YES. [2022-10-17 11:04:43,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813 conditions, 434 events. 22/434 cut-off events. For 220/221 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1322 event pairs, 6 based on Foata normal form. 1/427 useless extension candidates. Maximal degree in co-relation 737. Up to 37 conditions per place. [2022-10-17 11:04:43,690 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 25 selfloop transitions, 8 changer transitions 19/183 dead transitions. [2022-10-17 11:04:43,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 183 transitions, 653 flow [2022-10-17 11:04:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:04:43,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 11:04:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 763 transitions. [2022-10-17 11:04:43,693 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.833879781420765 [2022-10-17 11:04:43,693 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 763 transitions. [2022-10-17 11:04:43,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 763 transitions. [2022-10-17 11:04:43,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:43,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 763 transitions. [2022-10-17 11:04:43,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.6) internal successors, (763), 5 states have internal predecessors, (763), 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) [2022-10-17 11:04:43,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 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) [2022-10-17 11:04:43,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 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) [2022-10-17 11:04:43,698 INFO L175 Difference]: Start difference. First operand has 244 places, 222 transitions, 888 flow. Second operand 5 states and 763 transitions. [2022-10-17 11:04:43,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 183 transitions, 653 flow [2022-10-17 11:04:43,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 183 transitions, 595 flow, removed 7 selfloop flow, removed 18 redundant places. [2022-10-17 11:04:43,706 INFO L231 Difference]: Finished difference. Result has 203 places, 159 transitions, 454 flow [2022-10-17 11:04:43,707 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=454, PETRI_PLACES=203, PETRI_TRANSITIONS=159} [2022-10-17 11:04:43,708 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 26 predicate places. [2022-10-17 11:04:43,708 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 159 transitions, 454 flow [2022-10-17 11:04:43,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:43,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:43,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:43,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 11:04:43,709 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:04:43,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:43,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1709526936, now seen corresponding path program 1 times [2022-10-17 11:04:43,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:43,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824373832] [2022-10-17 11:04:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:43,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:44,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:44,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824373832] [2022-10-17 11:04:44,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824373832] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:44,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:44,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:04:44,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368554275] [2022-10-17 11:04:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:44,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:04:44,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:44,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:04:44,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:04:44,044 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 183 [2022-10-17 11:04:44,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 159 transitions, 454 flow. Second operand has 11 states, 11 states have (on average 138.9090909090909) internal successors, (1528), 11 states have internal predecessors, (1528), 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) [2022-10-17 11:04:44,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:44,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 183 [2022-10-17 11:04:44,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:44,441 INFO L130 PetriNetUnfolder]: 40/395 cut-off events. [2022-10-17 11:04:44,441 INFO L131 PetriNetUnfolder]: For 365/365 co-relation queries the response was YES. [2022-10-17 11:04:44,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 395 events. 40/395 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1222 event pairs, 18 based on Foata normal form. 4/393 useless extension candidates. Maximal degree in co-relation 821. Up to 63 conditions per place. [2022-10-17 11:04:44,444 INFO L137 encePairwiseOnDemand]: 167/183 looper letters, 22 selfloop transitions, 14 changer transitions 17/178 dead transitions. [2022-10-17 11:04:44,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 178 transitions, 688 flow [2022-10-17 11:04:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 11:04:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-10-17 11:04:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2366 transitions. [2022-10-17 11:04:44,449 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7605271616843459 [2022-10-17 11:04:44,450 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2366 transitions. [2022-10-17 11:04:44,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2366 transitions. [2022-10-17 11:04:44,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:44,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2366 transitions. [2022-10-17 11:04:44,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 139.1764705882353) internal successors, (2366), 17 states have internal predecessors, (2366), 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) [2022-10-17 11:04:44,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 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) [2022-10-17 11:04:44,462 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 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) [2022-10-17 11:04:44,463 INFO L175 Difference]: Start difference. First operand has 203 places, 159 transitions, 454 flow. Second operand 17 states and 2366 transitions. [2022-10-17 11:04:44,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 178 transitions, 688 flow [2022-10-17 11:04:44,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 178 transitions, 578 flow, removed 23 selfloop flow, removed 15 redundant places. [2022-10-17 11:04:44,471 INFO L231 Difference]: Finished difference. Result has 193 places, 161 transitions, 442 flow [2022-10-17 11:04:44,472 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=442, PETRI_PLACES=193, PETRI_TRANSITIONS=161} [2022-10-17 11:04:44,473 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 16 predicate places. [2022-10-17 11:04:44,473 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 161 transitions, 442 flow [2022-10-17 11:04:44,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.9090909090909) internal successors, (1528), 11 states have internal predecessors, (1528), 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) [2022-10-17 11:04:44,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:44,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:44,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 11:04:44,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:04:44,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:44,475 INFO L85 PathProgramCache]: Analyzing trace with hash -413924542, now seen corresponding path program 1 times [2022-10-17 11:04:44,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:44,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236425445] [2022-10-17 11:04:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:44,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:44,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:44,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236425445] [2022-10-17 11:04:44,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236425445] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:44,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:44,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 11:04:44,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102729005] [2022-10-17 11:04:44,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:44,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 11:04:44,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:44,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 11:04:44,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:04:44,943 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-10-17 11:04:44,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 161 transitions, 442 flow. Second operand has 8 states, 8 states have (on average 143.75) internal successors, (1150), 8 states have internal predecessors, (1150), 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) [2022-10-17 11:04:44,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:44,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-10-17 11:04:44,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:45,063 INFO L130 PetriNetUnfolder]: 8/186 cut-off events. [2022-10-17 11:04:45,063 INFO L131 PetriNetUnfolder]: For 100/101 co-relation queries the response was YES. [2022-10-17 11:04:45,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 186 events. 8/186 cut-off events. For 100/101 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 168 event pairs, 0 based on Foata normal form. 7/191 useless extension candidates. Maximal degree in co-relation 301. Up to 25 conditions per place. [2022-10-17 11:04:45,064 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 0 selfloop transitions, 0 changer transitions 149/149 dead transitions. [2022-10-17 11:04:45,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 149 transitions, 476 flow [2022-10-17 11:04:45,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:04:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 11:04:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 878 transitions. [2022-10-17 11:04:45,067 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7996357012750456 [2022-10-17 11:04:45,067 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 878 transitions. [2022-10-17 11:04:45,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 878 transitions. [2022-10-17 11:04:45,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:45,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 878 transitions. [2022-10-17 11:04:45,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 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) [2022-10-17 11:04:45,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-10-17 11:04:45,072 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-10-17 11:04:45,072 INFO L175 Difference]: Start difference. First operand has 193 places, 161 transitions, 442 flow. Second operand 6 states and 878 transitions. [2022-10-17 11:04:45,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 149 transitions, 476 flow [2022-10-17 11:04:45,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 149 transitions, 438 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-10-17 11:04:45,076 INFO L231 Difference]: Finished difference. Result has 165 places, 0 transitions, 0 flow [2022-10-17 11:04:45,076 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=165, PETRI_TRANSITIONS=0} [2022-10-17 11:04:45,077 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, -12 predicate places. [2022-10-17 11:04:45,077 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 0 transitions, 0 flow [2022-10-17 11:04:45,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.75) internal successors, (1150), 8 states have internal predecessors, (1150), 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) [2022-10-17 11:04:45,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-10-17 11:04:45,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-10-17 11:04:45,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-10-17 11:04:45,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-10-17 11:04:45,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-10-17 11:04:45,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-10-17 11:04:45,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-10-17 11:04:45,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 11:04:45,085 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:45,090 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-10-17 11:04:45,090 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 11:04:45,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 11:04:45 BasicIcfg [2022-10-17 11:04:45,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 11:04:45,096 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 11:04:45,096 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 11:04:45,096 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 11:04:45,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:04:34" (3/4) ... [2022-10-17 11:04:45,099 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 11:04:45,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-10-17 11:04:45,113 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-10-17 11:04:45,113 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-10-17 11:04:45,114 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-10-17 11:04:45,114 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 11:04:45,165 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 11:04:45,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 11:04:45,166 INFO L158 Benchmark]: Toolchain (without parser) took 12051.90ms. Allocated memory was 104.9MB in the beginning and 188.7MB in the end (delta: 83.9MB). Free memory was 63.5MB in the beginning and 145.1MB in the end (delta: -81.6MB). Peak memory consumption was 589.1kB. Max. memory is 16.1GB. [2022-10-17 11:04:45,166 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 104.9MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:04:45,166 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.11ms. Allocated memory is still 104.9MB. Free memory was 63.4MB in the beginning and 70.5MB in the end (delta: -7.2MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-10-17 11:04:45,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.29ms. Allocated memory is still 104.9MB. Free memory was 70.5MB in the beginning and 68.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:04:45,167 INFO L158 Benchmark]: Boogie Preprocessor took 28.92ms. Allocated memory is still 104.9MB. Free memory was 68.2MB in the beginning and 66.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:04:45,168 INFO L158 Benchmark]: RCFGBuilder took 560.31ms. Allocated memory is still 104.9MB. Free memory was 66.3MB in the beginning and 48.9MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-10-17 11:04:45,168 INFO L158 Benchmark]: TraceAbstraction took 10795.72ms. Allocated memory was 104.9MB in the beginning and 188.7MB in the end (delta: 83.9MB). Free memory was 48.0MB in the beginning and 148.3MB in the end (delta: -100.2MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. [2022-10-17 11:04:45,169 INFO L158 Benchmark]: Witness Printer took 68.84ms. Allocated memory is still 188.7MB. Free memory was 148.3MB in the beginning and 145.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:04:45,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 104.9MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 539.11ms. Allocated memory is still 104.9MB. Free memory was 63.4MB in the beginning and 70.5MB in the end (delta: -7.2MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.29ms. Allocated memory is still 104.9MB. Free memory was 70.5MB in the beginning and 68.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.92ms. Allocated memory is still 104.9MB. Free memory was 68.2MB in the beginning and 66.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 560.31ms. Allocated memory is still 104.9MB. Free memory was 66.3MB in the beginning and 48.9MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10795.72ms. Allocated memory was 104.9MB in the beginning and 188.7MB in the end (delta: 83.9MB). Free memory was 48.0MB in the beginning and 148.3MB in the end (delta: -100.2MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. * Witness Printer took 68.84ms. Allocated memory is still 188.7MB. Free memory was 148.3MB in the beginning and 145.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 3 procedures, 255 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.5s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1213 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1213 mSDsluCounter, 1880 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1552 mSDsCounter, 173 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1380 IncrementalHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 173 mSolverCounterUnsat, 344 mSDtfsCounter, 1380 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=989occurred in iteration=6, InterpolantAutomatonStates: 159, 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, 0.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1167 NumberOfCodeBlocks, 1167 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1156 ConstructedInterpolants, 0 QuantifiedInterpolants, 5544 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-17 11:04:45,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49825184-906c-487e-ac02-7f8904be6263/bin/uautomizer-J5u9QxTXDZ/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