./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro --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 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa --- 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-8393723 [2022-11-18 20:40:32,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:40:32,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:40:32,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:40:32,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:40:32,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:40:32,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:40:32,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:40:32,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:40:32,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:40:32,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:40:32,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:40:32,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:40:32,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:40:32,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:40:32,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:40:32,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:40:32,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:40:32,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:40:32,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:40:32,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:40:32,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:40:32,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:40:32,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:40:32,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:40:32,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:40:32,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:40:32,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:40:32,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:40:32,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:40:32,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:40:32,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:40:32,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:40:32,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:40:32,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:40:32,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:40:32,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:40:32,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:40:32,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:40:32,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:40:32,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:40:32,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:40:32,160 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:40:32,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:40:32,161 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:40:32,161 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:40:32,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:40:32,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:40:32,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:40:32,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:40:32,164 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:40:32,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:40:32,166 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:40:32,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:40:32,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:40:32,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:40:32,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:40:32,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:40:32,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:40:32,167 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:40:32,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:40:32,167 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:40:32,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:40:32,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:40:32,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:40:32,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:40:32,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:40:32,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:40:32,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:40:32,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:40:32,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:40:32,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:40:32,169 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:40:32,169 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:40:32,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:40:32,170 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_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa [2022-11-18 20:40:32,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:40:32,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:40:32,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:40:32,485 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:40:32,486 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:40:32,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-11-18 20:40:32,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/data/72451a294/c56f5e84f7bf464aacf1434190c5c270/FLAG7c4dfa69c [2022-11-18 20:40:33,224 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:40:33,224 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-11-18 20:40:33,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/data/72451a294/c56f5e84f7bf464aacf1434190c5c270/FLAG7c4dfa69c [2022-11-18 20:40:33,580 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/data/72451a294/c56f5e84f7bf464aacf1434190c5c270 [2022-11-18 20:40:33,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:40:33,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:40:33,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:40:33,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:40:33,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:40:33,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:33,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e8dc8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33, skipping insertion in model container [2022-11-18 20:40:33,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:33,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:40:33,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:40:33,858 WARN L234 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_33672e36-dc4a-49fa-b63f-72267e3af32b/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-11-18 20:40:33,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:40:33,877 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:40:33,910 WARN L234 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_33672e36-dc4a-49fa-b63f-72267e3af32b/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-11-18 20:40:33,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:40:33,928 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:40:33,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33 WrapperNode [2022-11-18 20:40:33,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:40:33,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:40:33,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:40:33,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:40:33,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:33,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:33,982 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 206 [2022-11-18 20:40:33,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:40:33,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:40:33,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:40:33,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:40:33,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:33,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:34,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:34,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:34,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:34,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:34,015 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:34,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:34,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:40:34,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:40:34,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:40:34,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:40:34,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33" (1/1) ... [2022-11-18 20:40:34,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:40:34,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:34,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:40:34,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33672e36-dc4a-49fa-b63f-72267e3af32b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:40:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:40:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:40:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:40:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:40:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:40:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:40:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:40:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:40:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:40:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:40:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:40:34,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:40:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:40:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:40:34,124 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:40:34,245 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:40:34,247 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:40:34,793 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:40:34,805 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:40:34,805 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:40:34,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:40:34 BoogieIcfgContainer [2022-11-18 20:40:34,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:40:34,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:40:34,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:40:34,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:40:34,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:40:33" (1/3) ... [2022-11-18 20:40:34,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc316e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:40:34, skipping insertion in model container [2022-11-18 20:40:34,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:33" (2/3) ... [2022-11-18 20:40:34,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc316e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:40:34, skipping insertion in model container [2022-11-18 20:40:34,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:40:34" (3/3) ... [2022-11-18 20:40:34,830 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2022-11-18 20:40:34,840 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:40:34,850 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:40:34,850 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:40:34,850 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:40:34,986 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:40:35,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 289 transitions, 602 flow [2022-11-18 20:40:35,232 INFO L130 PetriNetUnfolder]: 14/286 cut-off events. [2022-11-18 20:40:35,232 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:40:35,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 286 events. 14/286 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 409 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-11-18 20:40:35,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 285 places, 289 transitions, 602 flow [2022-11-18 20:40:35,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 275 transitions, 568 flow [2022-11-18 20:40:35,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:40:35,271 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;@1b6b6945, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:40:35,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 20:40:35,347 INFO L130 PetriNetUnfolder]: 14/274 cut-off events. [2022-11-18 20:40:35,348 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:40:35,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:35,349 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:35,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:40:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash 419350744, now seen corresponding path program 1 times [2022-11-18 20:40:35,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:35,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937856242] [2022-11-18 20:40:35,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:35,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:50,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:50,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937856242] [2022-11-18 20:40:50,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937856242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:50,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:50,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-18 20:40:50,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363682080] [2022-11-18 20:40:50,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:50,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:40:50,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:50,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:40:50,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:40:50,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 289 [2022-11-18 20:40:50,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 275 transitions, 568 flow. Second operand has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:50,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:50,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 289 [2022-11-18 20:40:50,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:42:23,772 INFO L130 PetriNetUnfolder]: 36422/79014 cut-off events. [2022-11-18 20:42:23,772 INFO L131 PetriNetUnfolder]: For 2977/2977 co-relation queries the response was YES. [2022-11-18 20:42:24,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137366 conditions, 79014 events. 36422/79014 cut-off events. For 2977/2977 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 842322 event pairs, 1975 based on Foata normal form. 8638/84279 useless extension candidates. Maximal degree in co-relation 136839. Up to 6165 conditions per place. [2022-11-18 20:42:24,430 INFO L137 encePairwiseOnDemand]: 216/289 looper letters, 1419 selfloop transitions, 34 changer transitions 57/1659 dead transitions. [2022-11-18 20:42:24,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1659 transitions, 6524 flow [2022-11-18 20:42:24,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 20:42:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-11-18 20:42:24,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 11623 transitions. [2022-11-18 20:42:24,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6593113619604062 [2022-11-18 20:42:24,484 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 11623 transitions. [2022-11-18 20:42:24,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 11623 transitions. [2022-11-18 20:42:24,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:42:24,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 11623 transitions. [2022-11-18 20:42:24,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 190.54098360655738) internal successors, (11623), 61 states have internal predecessors, (11623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:24,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 289.0) internal successors, (17918), 62 states have internal predecessors, (17918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:24,596 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 289.0) internal successors, (17918), 62 states have internal predecessors, (17918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:24,598 INFO L175 Difference]: Start difference. First operand has 271 places, 275 transitions, 568 flow. Second operand 61 states and 11623 transitions. [2022-11-18 20:42:24,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 1659 transitions, 6524 flow [2022-11-18 20:42:24,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1659 transitions, 6400 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:42:24,667 INFO L231 Difference]: Finished difference. Result has 365 places, 276 transitions, 741 flow [2022-11-18 20:42:24,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=741, PETRI_PLACES=365, PETRI_TRANSITIONS=276} [2022-11-18 20:42:24,677 INFO L288 CegarLoopForPetriNet]: 271 programPoint places, 94 predicate places. [2022-11-18 20:42:24,677 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 276 transitions, 741 flow [2022-11-18 20:42:24,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:24,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:42:24,683 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:42:24,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:42:24,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:42:24,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:24,686 INFO L85 PathProgramCache]: Analyzing trace with hash 357940874, now seen corresponding path program 2 times [2022-11-18 20:42:24,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:24,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749346903] [2022-11-18 20:42:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:24,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:33,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:33,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749346903] [2022-11-18 20:42:33,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749346903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:42:33,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:42:33,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-18 20:42:33,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026135036] [2022-11-18 20:42:33,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:42:33,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:42:33,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:33,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:42:33,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:42:33,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 289 [2022-11-18 20:42:33,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 276 transitions, 741 flow. Second operand has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:33,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:42:33,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 289 [2022-11-18 20:42:33,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:43:52,808 INFO L130 PetriNetUnfolder]: 72412/155800 cut-off events. [2022-11-18 20:43:52,808 INFO L131 PetriNetUnfolder]: For 59126/59126 co-relation queries the response was YES. [2022-11-18 20:43:54,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346385 conditions, 155800 events. 72412/155800 cut-off events. For 59126/59126 co-relation queries the response was YES. Maximal size of possible extension queue 2175. Compared 1798542 event pairs, 20262 based on Foata normal form. 1/149819 useless extension candidates. Maximal degree in co-relation 346282. Up to 26971 conditions per place. [2022-11-18 20:43:55,246 INFO L137 encePairwiseOnDemand]: 232/289 looper letters, 2050 selfloop transitions, 133 changer transitions 68/2400 dead transitions. [2022-11-18 20:43:55,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 2400 transitions, 12748 flow [2022-11-18 20:43:55,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-18 20:43:55,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-11-18 20:43:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 14754 transitions. [2022-11-18 20:43:55,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6545115783870109 [2022-11-18 20:43:55,290 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 14754 transitions. [2022-11-18 20:43:55,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 14754 transitions. [2022-11-18 20:43:55,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:43:55,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 14754 transitions. [2022-11-18 20:43:55,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 189.15384615384616) internal successors, (14754), 78 states have internal predecessors, (14754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:55,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 289.0) internal successors, (22831), 79 states have internal predecessors, (22831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:55,411 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 289.0) internal successors, (22831), 79 states have internal predecessors, (22831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:55,411 INFO L175 Difference]: Start difference. First operand has 365 places, 276 transitions, 741 flow. Second operand 78 states and 14754 transitions. [2022-11-18 20:43:55,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 2400 transitions, 12748 flow [2022-11-18 20:44:02,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 2400 transitions, 10362 flow, removed 270 selfloop flow, removed 39 redundant places. [2022-11-18 20:44:02,081 INFO L231 Difference]: Finished difference. Result has 443 places, 401 transitions, 1807 flow [2022-11-18 20:44:02,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=1807, PETRI_PLACES=443, PETRI_TRANSITIONS=401} [2022-11-18 20:44:02,082 INFO L288 CegarLoopForPetriNet]: 271 programPoint places, 172 predicate places. [2022-11-18 20:44:02,083 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 401 transitions, 1807 flow [2022-11-18 20:44:02,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:02,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:44:02,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:02,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:44:02,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:44:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1975653952, now seen corresponding path program 3 times [2022-11-18 20:44:02,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:02,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583141469] [2022-11-18 20:44:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:02,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:08,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:08,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583141469] [2022-11-18 20:44:08,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583141469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:08,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:08,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-18 20:44:08,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294542664] [2022-11-18 20:44:08,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:08,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:44:08,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:08,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:44:08,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:44:08,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 289 [2022-11-18 20:44:08,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 401 transitions, 1807 flow. Second operand has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:08,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:44:08,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 289 [2022-11-18 20:44:08,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand