./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/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_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 --- 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 18:42:56,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:42:56,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:42:57,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:42:57,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:42:57,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:42:57,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:42:57,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:42:57,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:42:57,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:42:57,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:42:57,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:42:57,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:42:57,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:42:57,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:42:57,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:42:57,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:42:57,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:42:57,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:42:57,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:42:57,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:42:57,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:42:57,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:42:57,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:42:57,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:42:57,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:42:57,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:42:57,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:42:57,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:42:57,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:42:57,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:42:57,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:42:57,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:42:57,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:42:57,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:42:57,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:42:57,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:42:57,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:42:57,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:42:57,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:42:57,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:42:57,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:42:57,162 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:42:57,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:42:57,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:42:57,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:42:57,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:42:57,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:42:57,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:42:57,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:42:57,168 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:42:57,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:42:57,170 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:42:57,170 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:42:57,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:42:57,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:42:57,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:42:57,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:42:57,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:42:57,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:42:57,172 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:42:57,172 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:42:57,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:42:57,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:42:57,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:42:57,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:42:57,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:42:57,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:42:57,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:42:57,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:42:57,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:42:57,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:42:57,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:42:57,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:42:57,177 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:42:57,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:42:57,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:42:57,178 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_ec0c0ec9-194b-4b69-b213-33df28623a9b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 [2022-11-18 18:42:57,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:42:57,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:42:57,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:42:57,633 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:42:57,635 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:42:57,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2022-11-18 18:42:57,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/data/7e5a31145/aac23248916c4695aa006b3f17aa1bf5/FLAGe03a89caa [2022-11-18 18:42:58,401 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:42:58,402 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2022-11-18 18:42:58,415 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/data/7e5a31145/aac23248916c4695aa006b3f17aa1bf5/FLAGe03a89caa [2022-11-18 18:42:58,736 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/data/7e5a31145/aac23248916c4695aa006b3f17aa1bf5 [2022-11-18 18:42:58,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:42:58,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:42:58,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:42:58,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:42:58,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:42:58,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:42:58" (1/1) ... [2022-11-18 18:42:58,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a3e3de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:58, skipping insertion in model container [2022-11-18 18:42:58,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:42:58" (1/1) ... [2022-11-18 18:42:58,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:42:58,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:42:59,136 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_ec0c0ec9-194b-4b69-b213-33df28623a9b/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3947,3960] [2022-11-18 18:42:59,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:42:59,154 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:42:59,193 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_ec0c0ec9-194b-4b69-b213-33df28623a9b/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3947,3960] [2022-11-18 18:42:59,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:42:59,220 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:42:59,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59 WrapperNode [2022-11-18 18:42:59,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:42:59,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:42:59,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:42:59,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:42:59,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59" (1/1) ... [2022-11-18 18:42:59,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59" (1/1) ... [2022-11-18 18:42:59,281 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 347 [2022-11-18 18:42:59,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:42:59,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:42:59,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:42:59,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:42:59,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59" (1/1) ... [2022-11-18 18:42:59,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59" (1/1) ... [2022-11-18 18:42:59,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59" (1/1) ... [2022-11-18 18:42:59,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59" (1/1) ... [2022-11-18 18:42:59,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59" (1/1) ... [2022-11-18 18:42:59,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59" (1/1) ... [2022-11-18 18:42:59,322 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59" (1/1) ... [2022-11-18 18:42:59,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59" (1/1) ... [2022-11-18 18:42:59,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:42:59,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:42:59,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:42:59,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:42:59,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59" (1/1) ... [2022-11-18 18:42:59,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:42:59,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:59,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:42:59,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:42:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:42:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:42:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:42:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:42:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:42:59,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:42:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:42:59,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:42:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:42:59,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:42:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:42:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:42:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:42:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:42:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:42:59,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:42:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:42:59,459 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 18:42:59,669 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:42:59,672 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:43:00,693 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:43:01,111 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:43:01,111 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 18:43:01,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:43:01 BoogieIcfgContainer [2022-11-18 18:43:01,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:43:01,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:43:01,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:43:01,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:43:01,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:42:58" (1/3) ... [2022-11-18 18:43:01,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4371933c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:43:01, skipping insertion in model container [2022-11-18 18:43:01,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:59" (2/3) ... [2022-11-18 18:43:01,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4371933c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:43:01, skipping insertion in model container [2022-11-18 18:43:01,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:43:01" (3/3) ... [2022-11-18 18:43:01,130 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2022-11-18 18:43:01,143 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:43:01,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:43:01,158 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-18 18:43:01,158 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:43:01,381 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:43:01,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 312 transitions, 648 flow [2022-11-18 18:43:01,689 INFO L130 PetriNetUnfolder]: 22/309 cut-off events. [2022-11-18 18:43:01,690 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:43:01,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 309 events. 22/309 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 349 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2022-11-18 18:43:01,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 312 transitions, 648 flow [2022-11-18 18:43:01,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 288 transitions, 591 flow [2022-11-18 18:43:01,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:43:01,746 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;@1c22227c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:43:01,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-18 18:43:01,777 INFO L130 PetriNetUnfolder]: 3/78 cut-off events. [2022-11-18 18:43:01,778 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:43:01,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:01,780 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] [2022-11-18 18:43:01,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 18:43:01,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:01,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1380485192, now seen corresponding path program 1 times [2022-11-18 18:43:01,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:01,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714034901] [2022-11-18 18:43:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:01,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:02,384 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 18:43:02,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:02,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714034901] [2022-11-18 18:43:02,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714034901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:02,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:02,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:43:02,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964805797] [2022-11-18 18:43:02,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:02,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:43:02,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:02,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:43:02,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:43:02,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 312 [2022-11-18 18:43:02,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 288 transitions, 591 flow. Second operand has 4 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 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 18:43:02,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:02,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 312 [2022-11-18 18:43:02,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:05,177 INFO L130 PetriNetUnfolder]: 2371/5576 cut-off events. [2022-11-18 18:43:05,178 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2022-11-18 18:43:05,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9253 conditions, 5576 events. 2371/5576 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 45924 event pairs, 1440 based on Foata normal form. 546/3442 useless extension candidates. Maximal degree in co-relation 4348. Up to 1674 conditions per place. [2022-11-18 18:43:05,252 INFO L137 encePairwiseOnDemand]: 270/312 looper letters, 94 selfloop transitions, 14 changer transitions 7/315 dead transitions. [2022-11-18 18:43:05,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 315 transitions, 876 flow [2022-11-18 18:43:05,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:43:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:43:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1292 transitions. [2022-11-18 18:43:05,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8282051282051283 [2022-11-18 18:43:05,275 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1292 transitions. [2022-11-18 18:43:05,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1292 transitions. [2022-11-18 18:43:05,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:05,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1292 transitions. [2022-11-18 18:43:05,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 258.4) internal successors, (1292), 5 states have internal predecessors, (1292), 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 18:43:05,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 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 18:43:05,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 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 18:43:05,344 INFO L175 Difference]: Start difference. First operand has 277 places, 288 transitions, 591 flow. Second operand 5 states and 1292 transitions. [2022-11-18 18:43:05,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 315 transitions, 876 flow [2022-11-18 18:43:05,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 315 transitions, 858 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:43:05,357 INFO L231 Difference]: Finished difference. Result has 272 places, 270 transitions, 628 flow [2022-11-18 18:43:05,360 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=628, PETRI_PLACES=272, PETRI_TRANSITIONS=270} [2022-11-18 18:43:05,364 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, -5 predicate places. [2022-11-18 18:43:05,364 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 270 transitions, 628 flow [2022-11-18 18:43:05,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 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 18:43:05,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:05,366 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:43:05,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:43:05,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 18:43:05,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:05,367 INFO L85 PathProgramCache]: Analyzing trace with hash 32794271, now seen corresponding path program 1 times [2022-11-18 18:43:05,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:05,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021506581] [2022-11-18 18:43:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:05,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:05,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:05,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:05,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021506581] [2022-11-18 18:43:05,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021506581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:05,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104551742] [2022-11-18 18:43:05,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:05,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:05,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:05,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:05,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:43:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:05,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:43:05,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:05,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:06,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104551742] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:06,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:06,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 18:43:06,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107798258] [2022-11-18 18:43:06,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:06,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:43:06,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:06,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:43:06,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:43:06,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 312 [2022-11-18 18:43:06,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 270 transitions, 628 flow. Second operand has 12 states, 12 states have (on average 230.66666666666666) internal successors, (2768), 12 states have internal predecessors, (2768), 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 18:43:06,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:06,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 312 [2022-11-18 18:43:06,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:10,821 INFO L130 PetriNetUnfolder]: 5926/13773 cut-off events. [2022-11-18 18:43:10,821 INFO L131 PetriNetUnfolder]: For 323/323 co-relation queries the response was YES. [2022-11-18 18:43:10,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22711 conditions, 13773 events. 5926/13773 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 124631 event pairs, 3600 based on Foata normal form. 9/7117 useless extension candidates. Maximal degree in co-relation 17800. Up to 1665 conditions per place. [2022-11-18 18:43:10,988 INFO L137 encePairwiseOnDemand]: 289/312 looper letters, 199 selfloop transitions, 62 changer transitions 0/461 dead transitions. [2022-11-18 18:43:10,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 461 transitions, 1634 flow [2022-11-18 18:43:10,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:43:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:43:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4374 transitions. [2022-11-18 18:43:11,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7788461538461539 [2022-11-18 18:43:11,002 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4374 transitions. [2022-11-18 18:43:11,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4374 transitions. [2022-11-18 18:43:11,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:11,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4374 transitions. [2022-11-18 18:43:11,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 243.0) internal successors, (4374), 18 states have internal predecessors, (4374), 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 18:43:11,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 312.0) internal successors, (5928), 19 states have internal predecessors, (5928), 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 18:43:11,036 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 312.0) internal successors, (5928), 19 states have internal predecessors, (5928), 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 18:43:11,037 INFO L175 Difference]: Start difference. First operand has 272 places, 270 transitions, 628 flow. Second operand 18 states and 4374 transitions. [2022-11-18 18:43:11,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 461 transitions, 1634 flow [2022-11-18 18:43:11,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 461 transitions, 1626 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:43:11,055 INFO L231 Difference]: Finished difference. Result has 285 places, 312 transitions, 990 flow [2022-11-18 18:43:11,056 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=990, PETRI_PLACES=285, PETRI_TRANSITIONS=312} [2022-11-18 18:43:11,057 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 8 predicate places. [2022-11-18 18:43:11,057 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 312 transitions, 990 flow [2022-11-18 18:43:11,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 230.66666666666666) internal successors, (2768), 12 states have internal predecessors, (2768), 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 18:43:11,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:11,061 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:43:11,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:11,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:11,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 18:43:11,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:11,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1016623460, now seen corresponding path program 1 times [2022-11-18 18:43:11,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:11,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760420874] [2022-11-18 18:43:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:11,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:11,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:11,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760420874] [2022-11-18 18:43:11,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760420874] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:11,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763509222] [2022-11-18 18:43:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:11,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:11,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:11,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:11,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:43:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:11,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:43:11,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:11,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:11,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763509222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:11,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:43:11,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:43:11,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039836747] [2022-11-18 18:43:11,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:11,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:43:11,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:11,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:43:11,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:43:11,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 312 [2022-11-18 18:43:11,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 312 transitions, 990 flow. Second operand has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 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 18:43:11,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:11,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 312 [2022-11-18 18:43:11,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:15,924 INFO L130 PetriNetUnfolder]: 5926/13761 cut-off events. [2022-11-18 18:43:15,924 INFO L131 PetriNetUnfolder]: For 475/475 co-relation queries the response was YES. [2022-11-18 18:43:15,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22767 conditions, 13761 events. 5926/13761 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 125003 event pairs, 3600 based on Foata normal form. 12/7108 useless extension candidates. Maximal degree in co-relation 18170. Up to 6588 conditions per place. [2022-11-18 18:43:16,072 INFO L137 encePairwiseOnDemand]: 295/312 looper letters, 95 selfloop transitions, 43 changer transitions 0/338 dead transitions. [2022-11-18 18:43:16,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 338 transitions, 1273 flow [2022-11-18 18:43:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:43:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:43:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1704 transitions. [2022-11-18 18:43:16,079 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7802197802197802 [2022-11-18 18:43:16,079 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1704 transitions. [2022-11-18 18:43:16,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1704 transitions. [2022-11-18 18:43:16,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:16,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1704 transitions. [2022-11-18 18:43:16,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 243.42857142857142) internal successors, (1704), 7 states have internal predecessors, (1704), 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 18:43:16,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 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 18:43:16,242 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 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 18:43:16,242 INFO L175 Difference]: Start difference. First operand has 285 places, 312 transitions, 990 flow. Second operand 7 states and 1704 transitions. [2022-11-18 18:43:16,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 338 transitions, 1273 flow [2022-11-18 18:43:16,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 338 transitions, 1157 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 18:43:16,253 INFO L231 Difference]: Finished difference. Result has 279 places, 300 transitions, 879 flow [2022-11-18 18:43:16,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=879, PETRI_PLACES=279, PETRI_TRANSITIONS=300} [2022-11-18 18:43:16,255 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 2 predicate places. [2022-11-18 18:43:16,256 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 300 transitions, 879 flow [2022-11-18 18:43:16,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 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 18:43:16,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:16,257 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:43:16,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:16,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:16,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 18:43:16,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1362244616, now seen corresponding path program 2 times [2022-11-18 18:43:16,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:16,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471556792] [2022-11-18 18:43:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:16,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:16,867 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:16,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:16,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471556792] [2022-11-18 18:43:16,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471556792] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:16,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202934051] [2022-11-18 18:43:16,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:43:16,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:16,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:16,878 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:16,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:43:17,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:43:17,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:17,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:43:17,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 18:43:17,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 18:43:17,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202934051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:17,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:17,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 18:43:17,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451085396] [2022-11-18 18:43:17,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:17,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:43:17,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:17,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:43:17,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:43:17,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 312 [2022-11-18 18:43:17,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 300 transitions, 879 flow. Second operand has 18 states, 18 states have (on average 211.61111111111111) internal successors, (3809), 18 states have internal predecessors, (3809), 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 18:43:17,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:17,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 312 [2022-11-18 18:43:17,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:22,241 INFO L130 PetriNetUnfolder]: 4642/12366 cut-off events. [2022-11-18 18:43:22,242 INFO L131 PetriNetUnfolder]: For 574/574 co-relation queries the response was YES. [2022-11-18 18:43:22,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19896 conditions, 12366 events. 4642/12366 cut-off events. For 574/574 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 112008 event pairs, 3108 based on Foata normal form. 6/7388 useless extension candidates. Maximal degree in co-relation 16494. Up to 990 conditions per place. [2022-11-18 18:43:22,350 INFO L137 encePairwiseOnDemand]: 281/312 looper letters, 255 selfloop transitions, 97 changer transitions 0/532 dead transitions. [2022-11-18 18:43:22,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 532 transitions, 2184 flow [2022-11-18 18:43:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 18:43:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 18:43:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10571 transitions. [2022-11-18 18:43:22,376 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6914573521716378 [2022-11-18 18:43:22,377 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10571 transitions. [2022-11-18 18:43:22,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10571 transitions. [2022-11-18 18:43:22,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:22,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10571 transitions. [2022-11-18 18:43:22,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 215.73469387755102) internal successors, (10571), 49 states have internal predecessors, (10571), 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 18:43:22,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 312.0) internal successors, (15600), 50 states have internal predecessors, (15600), 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 18:43:22,448 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 312.0) internal successors, (15600), 50 states have internal predecessors, (15600), 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 18:43:22,449 INFO L175 Difference]: Start difference. First operand has 279 places, 300 transitions, 879 flow. Second operand 49 states and 10571 transitions. [2022-11-18 18:43:22,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 532 transitions, 2184 flow [2022-11-18 18:43:22,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 532 transitions, 2115 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:43:22,461 INFO L231 Difference]: Finished difference. Result has 322 places, 337 transitions, 1216 flow [2022-11-18 18:43:22,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1216, PETRI_PLACES=322, PETRI_TRANSITIONS=337} [2022-11-18 18:43:22,463 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 45 predicate places. [2022-11-18 18:43:22,463 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 337 transitions, 1216 flow [2022-11-18 18:43:22,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 211.61111111111111) internal successors, (3809), 18 states have internal predecessors, (3809), 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 18:43:22,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:22,471 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:43:22,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:22,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:22,678 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 18:43:22,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:22,678 INFO L85 PathProgramCache]: Analyzing trace with hash -249847238, now seen corresponding path program 1 times [2022-11-18 18:43:22,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:22,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71978050] [2022-11-18 18:43:22,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:22,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:23,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:23,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71978050] [2022-11-18 18:43:23,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71978050] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:23,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955073124] [2022-11-18 18:43:23,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:23,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:23,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:23,247 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:23,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:43:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:23,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:43:23,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:23,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:23,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955073124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:23,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:23,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 18:43:23,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092004853] [2022-11-18 18:43:23,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:23,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:43:23,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:43:23,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:43:23,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 312 [2022-11-18 18:43:23,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 337 transitions, 1216 flow. Second operand has 32 states, 32 states have (on average 231.28125) internal successors, (7401), 32 states have internal predecessors, (7401), 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 18:43:23,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:23,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 312 [2022-11-18 18:43:23,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:32,645 INFO L130 PetriNetUnfolder]: 9946/26405 cut-off events. [2022-11-18 18:43:32,645 INFO L131 PetriNetUnfolder]: For 1705/1705 co-relation queries the response was YES. [2022-11-18 18:43:32,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42689 conditions, 26405 events. 9946/26405 cut-off events. For 1705/1705 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 249298 event pairs, 6660 based on Foata normal form. 16/15786 useless extension candidates. Maximal degree in co-relation 41989. Up to 1455 conditions per place. [2022-11-18 18:43:32,825 INFO L137 encePairwiseOnDemand]: 293/312 looper letters, 533 selfloop transitions, 160 changer transitions 0/899 dead transitions. [2022-11-18 18:43:32,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 899 transitions, 4511 flow [2022-11-18 18:43:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 18:43:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 18:43:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10741 transitions. [2022-11-18 18:43:32,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7824155011655012 [2022-11-18 18:43:32,851 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10741 transitions. [2022-11-18 18:43:32,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10741 transitions. [2022-11-18 18:43:32,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:32,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10741 transitions. [2022-11-18 18:43:32,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 244.11363636363637) internal successors, (10741), 44 states have internal predecessors, (10741), 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 18:43:33,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 312.0) internal successors, (14040), 45 states have internal predecessors, (14040), 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 18:43:33,073 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 312.0) internal successors, (14040), 45 states have internal predecessors, (14040), 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 18:43:33,073 INFO L175 Difference]: Start difference. First operand has 322 places, 337 transitions, 1216 flow. Second operand 44 states and 10741 transitions. [2022-11-18 18:43:33,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 899 transitions, 4511 flow [2022-11-18 18:43:33,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 899 transitions, 4257 flow, removed 73 selfloop flow, removed 15 redundant places. [2022-11-18 18:43:33,102 INFO L231 Difference]: Finished difference. Result has 359 places, 430 transitions, 2103 flow [2022-11-18 18:43:33,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2103, PETRI_PLACES=359, PETRI_TRANSITIONS=430} [2022-11-18 18:43:33,105 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 82 predicate places. [2022-11-18 18:43:33,106 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 430 transitions, 2103 flow [2022-11-18 18:43:33,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 231.28125) internal successors, (7401), 32 states have internal predecessors, (7401), 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 18:43:33,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:33,109 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] [2022-11-18 18:43:33,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 18:43:33,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0c0ec9-194b-4b69-b213-33df28623a9b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:33,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 18:43:33,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:33,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2002558662, now seen corresponding path program 1 times [2022-11-18 18:43:33,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:33,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473600960] [2022-11-18 18:43:33,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:33,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:33,550 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 18:43:33,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:33,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473600960] [2022-11-18 18:43:33,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473600960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:33,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:33,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:43:33,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585497909] [2022-11-18 18:43:33,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:33,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:43:33,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:33,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:43:33,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:43:33,555 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 312 [2022-11-18 18:43:33,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 430 transitions, 2103 flow. Second operand has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 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 18:43:33,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:33,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 312 [2022-11-18 18:43:33,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:40,945 INFO L130 PetriNetUnfolder]: 11506/29045 cut-off events. [2022-11-18 18:43:40,946 INFO L131 PetriNetUnfolder]: For 2156/2156 co-relation queries the response was YES. [2022-11-18 18:43:41,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47795 conditions, 29045 events. 11506/29045 cut-off events. For 2156/2156 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 278916 event pairs, 4485 based on Foata normal form. 645/18305 useless extension candidates. Maximal degree in co-relation 47187. Up to 10848 conditions per place. [2022-11-18 18:43:41,200 INFO L137 encePairwiseOnDemand]: 306/312 looper letters, 38 selfloop transitions, 4 changer transitions 0/445 dead transitions. [2022-11-18 18:43:41,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 445 transitions, 2219 flow [2022-11-18 18:43:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:43:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:43:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 815 transitions. [2022-11-18 18:43:41,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8707264957264957 [2022-11-18 18:43:41,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 815 transitions. [2022-11-18 18:43:41,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 815 transitions. [2022-11-18 18:43:41,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:41,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 815 transitions. [2022-11-18 18:43:41,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 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 18:43:41,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 18:43:41,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 18:43:41,209 INFO L175 Difference]: Start difference. First operand has 359 places, 430 transitions, 2103 flow. Second operand 3 states and 815 transitions. [2022-11-18 18:43:41,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 445 transitions, 2219 flow [2022-11-18 18:43:41,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 445 transitions, 2117 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-18 18:43:41,233 INFO L231 Difference]: Finished difference. Result has 347 places, 431 transitions, 2021 flow [2022-11-18 18:43:41,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2021, PETRI_PLACES=347, PETRI_TRANSITIONS=431} [2022-11-18 18:43:41,235 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 70 predicate places. [2022-11-18 18:43:41,235 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 431 transitions, 2021 flow [2022-11-18 18:43:41,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 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 18:43:41,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:41,236 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] [2022-11-18 18:43:41,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:43:41,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 18:43:41,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2058255941, now seen corresponding path program 1 times [2022-11-18 18:43:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:41,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671942055] [2022-11-18 18:43:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:41,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:41,452 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 18:43:41,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:41,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671942055] [2022-11-18 18:43:41,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671942055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:41,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:41,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:43:41,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048383162] [2022-11-18 18:43:41,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:41,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:43:41,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:41,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:43:41,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:43:41,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 312 [2022-11-18 18:43:41,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 431 transitions, 2021 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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 18:43:41,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:41,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 312 [2022-11-18 18:43:41,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:47,897 INFO L130 PetriNetUnfolder]: 8386/29390 cut-off events. [2022-11-18 18:43:47,897 INFO L131 PetriNetUnfolder]: For 3085/3085 co-relation queries the response was YES. [2022-11-18 18:43:48,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46027 conditions, 29390 events. 8386/29390 cut-off events. For 3085/3085 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 320351 event pairs, 1800 based on Foata normal form. 195/19775 useless extension candidates. Maximal degree in co-relation 45432. Up to 13068 conditions per place. [2022-11-18 18:43:48,147 INFO L137 encePairwiseOnDemand]: 308/312 looper letters, 33 selfloop transitions, 3 changer transitions 0/442 dead transitions. [2022-11-18 18:43:48,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 442 transitions, 2123 flow [2022-11-18 18:43:48,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:43:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:43:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 815 transitions. [2022-11-18 18:43:48,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8707264957264957 [2022-11-18 18:43:48,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 815 transitions. [2022-11-18 18:43:48,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 815 transitions. [2022-11-18 18:43:48,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:48,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 815 transitions. [2022-11-18 18:43:48,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 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 18:43:48,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 18:43:48,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 18:43:48,155 INFO L175 Difference]: Start difference. First operand has 347 places, 431 transitions, 2021 flow. Second operand 3 states and 815 transitions. [2022-11-18 18:43:48,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 442 transitions, 2123 flow [2022-11-18 18:43:48,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 442 transitions, 2118 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:43:48,178 INFO L231 Difference]: Finished difference. Result has 349 places, 433 transitions, 2036 flow [2022-11-18 18:43:48,178 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2036, PETRI_PLACES=349, PETRI_TRANSITIONS=433} [2022-11-18 18:43:48,179 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 72 predicate places. [2022-11-18 18:43:48,179 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 433 transitions, 2036 flow [2022-11-18 18:43:48,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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 18:43:48,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:48,180 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] [2022-11-18 18:43:48,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:43:48,181 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 18:43:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash -873291914, now seen corresponding path program 1 times [2022-11-18 18:43:48,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:48,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697375582] [2022-11-18 18:43:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:48,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:48,739 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 18:43:48,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:48,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697375582] [2022-11-18 18:43:48,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697375582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:48,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:48,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:43:48,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656914567] [2022-11-18 18:43:48,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:48,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:43:48,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:48,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:43:48,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:48,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 312 [2022-11-18 18:43:48,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 433 transitions, 2036 flow. Second operand has 6 states, 6 states have (on average 231.16666666666666) internal successors, (1387), 6 states have internal predecessors, (1387), 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 18:43:48,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:48,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 312 [2022-11-18 18:43:48,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand