./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN --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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- 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-6b4ec56 [2022-11-20 12:43:38,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:43:38,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:43:38,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:43:38,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:43:38,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:43:38,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:43:38,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:43:38,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:43:38,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:43:38,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:43:38,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:43:38,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:43:38,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:43:38,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:43:38,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:43:38,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:43:38,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:43:38,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:43:38,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:43:38,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:43:38,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:43:38,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:43:38,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:43:38,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:43:38,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:43:38,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:43:38,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:43:38,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:43:38,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:43:38,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:43:38,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:43:38,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:43:38,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:43:38,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:43:38,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:43:38,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:43:38,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:43:38,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:43:38,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:43:38,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:43:38,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:43:38,230 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:43:38,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:43:38,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:43:38,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:43:38,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:43:38,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:43:38,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:43:38,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:43:38,233 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:43:38,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:43:38,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:43:38,234 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:43:38,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:43:38,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:43:38,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:43:38,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:43:38,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:43:38,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:43:38,236 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:43:38,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:43:38,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:43:38,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:43:38,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:43:38,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:43:38,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:43:38,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:43:38,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:43:38,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:43:38,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:43:38,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:43:38,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:43:38,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:43:38,239 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:43:38,239 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:43:38,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:43:38,239 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_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-11-20 12:43:38,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:43:38,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:43:38,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:43:38,547 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:43:38,547 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:43:38,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-20 12:43:41,658 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:43:41,941 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:43:41,942 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-20 12:43:41,949 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/data/7ce3e7973/d4b9e6f17f0f4bb48b8f5f5d782cec5f/FLAG3fa33704b [2022-11-20 12:43:42,251 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/data/7ce3e7973/d4b9e6f17f0f4bb48b8f5f5d782cec5f [2022-11-20 12:43:42,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:43:42,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:43:42,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:43:42,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:43:42,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:43:42,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1390b6fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42, skipping insertion in model container [2022-11-20 12:43:42,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:43:42,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:43:42,486 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-20 12:43:42,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:43:42,509 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:43:42,543 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-20 12:43:42,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:43:42,574 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:43:42,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42 WrapperNode [2022-11-20 12:43:42,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:43:42,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:43:42,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:43:42,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:43:42,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,644 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 479 [2022-11-20 12:43:42,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:43:42,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:43:42,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:43:42,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:43:42,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,695 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:43:42,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:43:42,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:43:42,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:43:42,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42" (1/1) ... [2022-11-20 12:43:42,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:43:42,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:42,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:43:42,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:43:42,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:43:42,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:43:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:43:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:43:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:43:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:43:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:43:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:43:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:43:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:43:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:43:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:43:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:43:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:43:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:43:42,854 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:43:43,070 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:43:43,072 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:43:44,036 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:43:44,056 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:43:44,056 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 12:43:44,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:43:44 BoogieIcfgContainer [2022-11-20 12:43:44,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:43:44,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:43:44,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:43:44,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:43:44,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:43:42" (1/3) ... [2022-11-20 12:43:44,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5234bfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:43:44, skipping insertion in model container [2022-11-20 12:43:44,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:43:42" (2/3) ... [2022-11-20 12:43:44,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5234bfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:43:44, skipping insertion in model container [2022-11-20 12:43:44,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:43:44" (3/3) ... [2022-11-20 12:43:44,071 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-11-20 12:43:44,081 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:43:44,093 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:43:44,093 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-20 12:43:44,093 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:43:44,338 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:43:44,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 620 places, 657 transitions, 1338 flow [2022-11-20 12:43:44,713 INFO L130 PetriNetUnfolder]: 47/654 cut-off events. [2022-11-20 12:43:44,713 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:43:44,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 654 events. 47/654 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1082 event pairs, 0 based on Foata normal form. 0/565 useless extension candidates. Maximal degree in co-relation 551. Up to 2 conditions per place. [2022-11-20 12:43:44,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 620 places, 657 transitions, 1338 flow [2022-11-20 12:43:44,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 597 places, 633 transitions, 1281 flow [2022-11-20 12:43:44,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:43:44,771 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;@18f01a88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:43:44,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2022-11-20 12:43:44,792 INFO L130 PetriNetUnfolder]: 4/101 cut-off events. [2022-11-20 12:43:44,792 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:43:44,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:44,794 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] [2022-11-20 12:43:44,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:43:44,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:44,802 INFO L85 PathProgramCache]: Analyzing trace with hash 653945936, now seen corresponding path program 1 times [2022-11-20 12:43:44,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:44,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463502906] [2022-11-20 12:43:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:44,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:45,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:45,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463502906] [2022-11-20 12:43:45,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463502906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:45,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:45,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:43:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45601018] [2022-11-20 12:43:45,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:45,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:43:45,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:43:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:43:45,595 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 657 [2022-11-20 12:43:45,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 633 transitions, 1281 flow. Second operand has 5 states, 5 states have (on average 521.8) internal successors, (2609), 5 states have internal predecessors, (2609), 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) [2022-11-20 12:43:45,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:45,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 657 [2022-11-20 12:43:45,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:46,188 INFO L130 PetriNetUnfolder]: 97/1382 cut-off events. [2022-11-20 12:43:46,188 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-20 12:43:46,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 1382 events. 97/1382 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7312 event pairs, 39 based on Foata normal form. 54/1225 useless extension candidates. Maximal degree in co-relation 1050. Up to 150 conditions per place. [2022-11-20 12:43:46,212 INFO L137 encePairwiseOnDemand]: 619/657 looper letters, 80 selfloop transitions, 5 changer transitions 16/603 dead transitions. [2022-11-20 12:43:46,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 603 transitions, 1423 flow [2022-11-20 12:43:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:43:46,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:43:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3239 transitions. [2022-11-20 12:43:46,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.821664129883308 [2022-11-20 12:43:46,241 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3239 transitions. [2022-11-20 12:43:46,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3239 transitions. [2022-11-20 12:43:46,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:46,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3239 transitions. [2022-11-20 12:43:46,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 539.8333333333334) internal successors, (3239), 6 states have internal predecessors, (3239), 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) [2022-11-20 12:43:46,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 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) [2022-11-20 12:43:46,281 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 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) [2022-11-20 12:43:46,283 INFO L175 Difference]: Start difference. First operand has 597 places, 633 transitions, 1281 flow. Second operand 6 states and 3239 transitions. [2022-11-20 12:43:46,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 603 transitions, 1423 flow [2022-11-20 12:43:46,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 603 transitions, 1414 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:43:46,308 INFO L231 Difference]: Finished difference. Result has 595 places, 587 transitions, 1190 flow [2022-11-20 12:43:46,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1190, PETRI_PLACES=595, PETRI_TRANSITIONS=587} [2022-11-20 12:43:46,317 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -2 predicate places. [2022-11-20 12:43:46,318 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 587 transitions, 1190 flow [2022-11-20 12:43:46,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 521.8) internal successors, (2609), 5 states have internal predecessors, (2609), 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) [2022-11-20 12:43:46,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:46,320 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] [2022-11-20 12:43:46,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:43:46,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:43:46,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:46,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1202511444, now seen corresponding path program 1 times [2022-11-20 12:43:46,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:46,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181866937] [2022-11-20 12:43:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:46,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:46,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:46,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181866937] [2022-11-20 12:43:46,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181866937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:46,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:46,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:43:46,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21538258] [2022-11-20 12:43:46,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:46,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:43:46,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:43:46,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:43:46,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 598 out of 657 [2022-11-20 12:43:46,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 587 transitions, 1190 flow. Second operand has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 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) [2022-11-20 12:43:46,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:46,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 598 of 657 [2022-11-20 12:43:46,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:46,970 INFO L130 PetriNetUnfolder]: 97/1364 cut-off events. [2022-11-20 12:43:46,971 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 12:43:46,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 1364 events. 97/1364 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7286 event pairs, 39 based on Foata normal form. 0/1171 useless extension candidates. Maximal degree in co-relation 1395. Up to 91 conditions per place. [2022-11-20 12:43:46,992 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 21 selfloop transitions, 3 changer transitions 0/585 dead transitions. [2022-11-20 12:43:46,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 585 transitions, 1234 flow [2022-11-20 12:43:46,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:43:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:43:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2418 transitions. [2022-11-20 12:43:46,999 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200913242009132 [2022-11-20 12:43:47,000 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2418 transitions. [2022-11-20 12:43:47,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2418 transitions. [2022-11-20 12:43:47,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:47,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2418 transitions. [2022-11-20 12:43:47,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 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) [2022-11-20 12:43:47,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 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) [2022-11-20 12:43:47,015 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 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) [2022-11-20 12:43:47,015 INFO L175 Difference]: Start difference. First operand has 595 places, 587 transitions, 1190 flow. Second operand 4 states and 2418 transitions. [2022-11-20 12:43:47,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 585 transitions, 1234 flow [2022-11-20 12:43:47,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 585 transitions, 1224 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:43:47,026 INFO L231 Difference]: Finished difference. Result has 575 places, 585 transitions, 1182 flow [2022-11-20 12:43:47,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1182, PETRI_PLACES=575, PETRI_TRANSITIONS=585} [2022-11-20 12:43:47,028 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -22 predicate places. [2022-11-20 12:43:47,028 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 585 transitions, 1182 flow [2022-11-20 12:43:47,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 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) [2022-11-20 12:43:47,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:47,031 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] [2022-11-20 12:43:47,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:43:47,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:43:47,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash 856476910, now seen corresponding path program 1 times [2022-11-20 12:43:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:47,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187779982] [2022-11-20 12:43:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:47,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:47,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:47,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187779982] [2022-11-20 12:43:47,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187779982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:47,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:47,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:43:47,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447775292] [2022-11-20 12:43:47,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:47,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:43:47,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:47,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:43:47,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:43:47,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-20 12:43:47,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 585 transitions, 1182 flow. Second operand has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 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) [2022-11-20 12:43:47,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:47,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-20 12:43:47,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:47,629 INFO L130 PetriNetUnfolder]: 35/1014 cut-off events. [2022-11-20 12:43:47,629 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2022-11-20 12:43:47,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 1014 events. 35/1014 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3379 event pairs, 0 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 1058. Up to 44 conditions per place. [2022-11-20 12:43:47,646 INFO L137 encePairwiseOnDemand]: 637/657 looper letters, 58 selfloop transitions, 14 changer transitions 0/616 dead transitions. [2022-11-20 12:43:47,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 616 transitions, 1394 flow [2022-11-20 12:43:47,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:43:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:43:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3003 transitions. [2022-11-20 12:43:47,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9141552511415525 [2022-11-20 12:43:47,654 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3003 transitions. [2022-11-20 12:43:47,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3003 transitions. [2022-11-20 12:43:47,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:47,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3003 transitions. [2022-11-20 12:43:47,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 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) [2022-11-20 12:43:47,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 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) [2022-11-20 12:43:47,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 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) [2022-11-20 12:43:47,674 INFO L175 Difference]: Start difference. First operand has 575 places, 585 transitions, 1182 flow. Second operand 5 states and 3003 transitions. [2022-11-20 12:43:47,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 616 transitions, 1394 flow [2022-11-20 12:43:47,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 616 transitions, 1388 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:43:47,694 INFO L231 Difference]: Finished difference. Result has 579 places, 596 transitions, 1280 flow [2022-11-20 12:43:47,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=579, PETRI_TRANSITIONS=596} [2022-11-20 12:43:47,698 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -18 predicate places. [2022-11-20 12:43:47,698 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 596 transitions, 1280 flow [2022-11-20 12:43:47,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 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) [2022-11-20 12:43:47,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:47,700 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] [2022-11-20 12:43:47,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:43:47,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:43:47,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash 337973736, now seen corresponding path program 1 times [2022-11-20 12:43:47,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:47,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91055136] [2022-11-20 12:43:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:47,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:48,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:48,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91055136] [2022-11-20 12:43:48,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91055136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:48,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:48,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:43:48,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282487941] [2022-11-20 12:43:48,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:48,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:43:48,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:48,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:43:48,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:43:48,016 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 657 [2022-11-20 12:43:48,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 596 transitions, 1280 flow. Second operand has 8 states, 8 states have (on average 493.25) internal successors, (3946), 8 states have internal predecessors, (3946), 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) [2022-11-20 12:43:48,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:48,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 657 [2022-11-20 12:43:48,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:48,909 INFO L130 PetriNetUnfolder]: 192/2558 cut-off events. [2022-11-20 12:43:48,909 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-20 12:43:48,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2982 conditions, 2558 events. 192/2558 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 18459 event pairs, 78 based on Foata normal form. 0/2187 useless extension candidates. Maximal degree in co-relation 1435. Up to 277 conditions per place. [2022-11-20 12:43:48,943 INFO L137 encePairwiseOnDemand]: 645/657 looper letters, 110 selfloop transitions, 11 changer transitions 0/597 dead transitions. [2022-11-20 12:43:48,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 597 transitions, 1521 flow [2022-11-20 12:43:48,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:43:48,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:43:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4518 transitions. [2022-11-20 12:43:48,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640791476407914 [2022-11-20 12:43:48,955 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4518 transitions. [2022-11-20 12:43:48,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4518 transitions. [2022-11-20 12:43:48,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:48,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4518 transitions. [2022-11-20 12:43:48,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 502.0) internal successors, (4518), 9 states have internal predecessors, (4518), 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) [2022-11-20 12:43:48,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 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) [2022-11-20 12:43:48,986 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 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) [2022-11-20 12:43:48,986 INFO L175 Difference]: Start difference. First operand has 579 places, 596 transitions, 1280 flow. Second operand 9 states and 4518 transitions. [2022-11-20 12:43:48,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 597 transitions, 1521 flow [2022-11-20 12:43:48,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 597 transitions, 1512 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-20 12:43:48,999 INFO L231 Difference]: Finished difference. Result has 587 places, 595 transitions, 1292 flow [2022-11-20 12:43:49,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1292, PETRI_PLACES=587, PETRI_TRANSITIONS=595} [2022-11-20 12:43:49,001 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -10 predicate places. [2022-11-20 12:43:49,001 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 595 transitions, 1292 flow [2022-11-20 12:43:49,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 493.25) internal successors, (3946), 8 states have internal predecessors, (3946), 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) [2022-11-20 12:43:49,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:49,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:49,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:43:49,005 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:43:49,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:49,005 INFO L85 PathProgramCache]: Analyzing trace with hash -854353282, now seen corresponding path program 1 times [2022-11-20 12:43:49,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:49,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625940564] [2022-11-20 12:43:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:49,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:49,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:49,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625940564] [2022-11-20 12:43:49,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625940564] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:49,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23813576] [2022-11-20 12:43:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:49,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:49,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:49,139 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:49,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:43:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:49,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:43:49,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:49,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:49,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:49,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23813576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:49,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:43:49,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:43:49,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357422214] [2022-11-20 12:43:49,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:49,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:43:49,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:49,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:43:49,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:43:49,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-20 12:43:49,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 595 transitions, 1292 flow. Second operand has 12 states, 12 states have (on average 587.6666666666666) internal successors, (7052), 12 states have internal predecessors, (7052), 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) [2022-11-20 12:43:49,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:49,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-20 12:43:49,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:50,518 INFO L130 PetriNetUnfolder]: 85/2293 cut-off events. [2022-11-20 12:43:50,518 INFO L131 PetriNetUnfolder]: For 53/63 co-relation queries the response was YES. [2022-11-20 12:43:50,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2582 conditions, 2293 events. 85/2293 cut-off events. For 53/63 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 12864 event pairs, 0 based on Foata normal form. 9/2029 useless extension candidates. Maximal degree in co-relation 2277. Up to 34 conditions per place. [2022-11-20 12:43:50,553 INFO L137 encePairwiseOnDemand]: 634/657 looper letters, 108 selfloop transitions, 61 changer transitions 0/713 dead transitions. [2022-11-20 12:43:50,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 713 transitions, 1974 flow [2022-11-20 12:43:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:43:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:43:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 10708 transitions. [2022-11-20 12:43:50,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9054625401657365 [2022-11-20 12:43:50,573 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 10708 transitions. [2022-11-20 12:43:50,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 10708 transitions. [2022-11-20 12:43:50,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:50,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 10708 transitions. [2022-11-20 12:43:50,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 594.8888888888889) internal successors, (10708), 18 states have internal predecessors, (10708), 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) [2022-11-20 12:43:50,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 657.0) internal successors, (12483), 19 states have internal predecessors, (12483), 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) [2022-11-20 12:43:50,707 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 657.0) internal successors, (12483), 19 states have internal predecessors, (12483), 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) [2022-11-20 12:43:50,707 INFO L175 Difference]: Start difference. First operand has 587 places, 595 transitions, 1292 flow. Second operand 18 states and 10708 transitions. [2022-11-20 12:43:50,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 713 transitions, 1974 flow [2022-11-20 12:43:50,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 713 transitions, 1948 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:43:50,727 INFO L231 Difference]: Finished difference. Result has 601 places, 637 transitions, 1633 flow [2022-11-20 12:43:50,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1633, PETRI_PLACES=601, PETRI_TRANSITIONS=637} [2022-11-20 12:43:50,731 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 4 predicate places. [2022-11-20 12:43:50,731 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 637 transitions, 1633 flow [2022-11-20 12:43:50,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 587.6666666666666) internal successors, (7052), 12 states have internal predecessors, (7052), 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) [2022-11-20 12:43:50,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:50,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:50,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:50,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:50,946 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:43:50,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash -715146487, now seen corresponding path program 1 times [2022-11-20 12:43:50,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:50,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16615360] [2022-11-20 12:43:50,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:51,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:51,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16615360] [2022-11-20 12:43:51,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16615360] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:51,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56752756] [2022-11-20 12:43:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:51,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:51,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:51,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:51,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:43:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:51,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:43:51,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:51,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:51,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:51,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56752756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:51,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:43:51,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:43:51,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139054044] [2022-11-20 12:43:51,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:51,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:43:51,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:51,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:43:51,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:43:51,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-20 12:43:51,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 637 transitions, 1633 flow. Second operand has 6 states, 6 states have (on average 587.3333333333334) internal successors, (3524), 6 states have internal predecessors, (3524), 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) [2022-11-20 12:43:51,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:51,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-20 12:43:51,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:52,267 INFO L130 PetriNetUnfolder]: 85/2281 cut-off events. [2022-11-20 12:43:52,268 INFO L131 PetriNetUnfolder]: For 194/204 co-relation queries the response was YES. [2022-11-20 12:43:52,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2626 conditions, 2281 events. 85/2281 cut-off events. For 194/204 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 12805 event pairs, 0 based on Foata normal form. 12/2020 useless extension candidates. Maximal degree in co-relation 2313. Up to 68 conditions per place. [2022-11-20 12:43:52,306 INFO L137 encePairwiseOnDemand]: 640/657 looper letters, 58 selfloop transitions, 42 changer transitions 0/644 dead transitions. [2022-11-20 12:43:52,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 644 transitions, 1802 flow [2022-11-20 12:43:52,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:43:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:43:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4165 transitions. [2022-11-20 12:43:52,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9056316590563166 [2022-11-20 12:43:52,315 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4165 transitions. [2022-11-20 12:43:52,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4165 transitions. [2022-11-20 12:43:52,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:52,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4165 transitions. [2022-11-20 12:43:52,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 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) [2022-11-20 12:43:52,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 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) [2022-11-20 12:43:52,335 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 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) [2022-11-20 12:43:52,335 INFO L175 Difference]: Start difference. First operand has 601 places, 637 transitions, 1633 flow. Second operand 7 states and 4165 transitions. [2022-11-20 12:43:52,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 644 transitions, 1802 flow [2022-11-20 12:43:52,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 644 transitions, 1696 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-11-20 12:43:52,353 INFO L231 Difference]: Finished difference. Result has 595 places, 625 transitions, 1530 flow [2022-11-20 12:43:52,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1530, PETRI_PLACES=595, PETRI_TRANSITIONS=625} [2022-11-20 12:43:52,357 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -2 predicate places. [2022-11-20 12:43:52,358 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 625 transitions, 1530 flow [2022-11-20 12:43:52,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 587.3333333333334) internal successors, (3524), 6 states have internal predecessors, (3524), 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) [2022-11-20 12:43:52,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:52,359 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] [2022-11-20 12:43:52,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:52,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:43:52,565 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:43:52,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:52,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1158154664, now seen corresponding path program 1 times [2022-11-20 12:43:52,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:52,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592289259] [2022-11-20 12:43:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:52,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:43:52,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:52,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592289259] [2022-11-20 12:43:52,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592289259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:52,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:52,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:43:52,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46855588] [2022-11-20 12:43:52,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:52,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:43:52,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:52,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:43:52,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:43:52,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 657 [2022-11-20 12:43:52,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 625 transitions, 1530 flow. Second operand has 5 states, 5 states have (on average 523.4) internal successors, (2617), 5 states have internal predecessors, (2617), 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) [2022-11-20 12:43:52,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:52,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 657 [2022-11-20 12:43:52,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:54,416 INFO L130 PetriNetUnfolder]: 330/4937 cut-off events. [2022-11-20 12:43:54,416 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-11-20 12:43:54,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5621 conditions, 4937 events. 330/4937 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 41234 event pairs, 105 based on Foata normal form. 0/4213 useless extension candidates. Maximal degree in co-relation 5320. Up to 451 conditions per place. [2022-11-20 12:43:54,509 INFO L137 encePairwiseOnDemand]: 650/657 looper letters, 80 selfloop transitions, 5 changer transitions 0/623 dead transitions. [2022-11-20 12:43:54,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 623 transitions, 1696 flow [2022-11-20 12:43:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:43:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:43:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2677 transitions. [2022-11-20 12:43:54,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8149162861491629 [2022-11-20 12:43:54,517 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2677 transitions. [2022-11-20 12:43:54,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2677 transitions. [2022-11-20 12:43:54,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:54,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2677 transitions. [2022-11-20 12:43:54,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 535.4) internal successors, (2677), 5 states have internal predecessors, (2677), 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) [2022-11-20 12:43:54,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 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) [2022-11-20 12:43:54,533 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 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) [2022-11-20 12:43:54,533 INFO L175 Difference]: Start difference. First operand has 595 places, 625 transitions, 1530 flow. Second operand 5 states and 2677 transitions. [2022-11-20 12:43:54,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 623 transitions, 1696 flow [2022-11-20 12:43:54,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 623 transitions, 1644 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:43:54,549 INFO L231 Difference]: Finished difference. Result has 592 places, 623 transitions, 1484 flow [2022-11-20 12:43:54,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1484, PETRI_PLACES=592, PETRI_TRANSITIONS=623} [2022-11-20 12:43:54,551 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -5 predicate places. [2022-11-20 12:43:54,551 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 623 transitions, 1484 flow [2022-11-20 12:43:54,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 523.4) internal successors, (2617), 5 states have internal predecessors, (2617), 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) [2022-11-20 12:43:54,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:54,552 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] [2022-11-20 12:43:54,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:43:54,553 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:43:54,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:54,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1543055238, now seen corresponding path program 1 times [2022-11-20 12:43:54,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:54,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453163050] [2022-11-20 12:43:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:54,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:43:54,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:54,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453163050] [2022-11-20 12:43:54,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453163050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:54,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:54,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:43:54,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802081821] [2022-11-20 12:43:54,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:54,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:43:54,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:43:54,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:43:54,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 598 out of 657 [2022-11-20 12:43:54,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 623 transitions, 1484 flow. Second operand has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 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) [2022-11-20 12:43:54,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:54,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 598 of 657 [2022-11-20 12:43:54,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:56,339 INFO L130 PetriNetUnfolder]: 330/4928 cut-off events. [2022-11-20 12:43:56,340 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-20 12:43:56,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5423 conditions, 4928 events. 330/4928 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 41063 event pairs, 105 based on Foata normal form. 0/4213 useless extension candidates. Maximal degree in co-relation 5310. Up to 297 conditions per place. [2022-11-20 12:43:56,409 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 21 selfloop transitions, 3 changer transitions 0/621 dead transitions. [2022-11-20 12:43:56,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 621 transitions, 1528 flow [2022-11-20 12:43:56,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:43:56,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:43:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2418 transitions. [2022-11-20 12:43:56,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200913242009132 [2022-11-20 12:43:56,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2418 transitions. [2022-11-20 12:43:56,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2418 transitions. [2022-11-20 12:43:56,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:56,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2418 transitions. [2022-11-20 12:43:56,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 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) [2022-11-20 12:43:56,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 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) [2022-11-20 12:43:56,426 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 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) [2022-11-20 12:43:56,426 INFO L175 Difference]: Start difference. First operand has 592 places, 623 transitions, 1484 flow. Second operand 4 states and 2418 transitions. [2022-11-20 12:43:56,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 621 transitions, 1528 flow [2022-11-20 12:43:56,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 621 transitions, 1518 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:43:56,438 INFO L231 Difference]: Finished difference. Result has 589 places, 621 transitions, 1476 flow [2022-11-20 12:43:56,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1476, PETRI_PLACES=589, PETRI_TRANSITIONS=621} [2022-11-20 12:43:56,440 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -8 predicate places. [2022-11-20 12:43:56,440 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 621 transitions, 1476 flow [2022-11-20 12:43:56,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 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) [2022-11-20 12:43:56,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:56,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:56,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:43:56,442 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:43:56,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:56,443 INFO L85 PathProgramCache]: Analyzing trace with hash 34394350, now seen corresponding path program 2 times [2022-11-20 12:43:56,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:56,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840231638] [2022-11-20 12:43:56,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:56,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:56,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:56,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840231638] [2022-11-20 12:43:56,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840231638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:56,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232536080] [2022-11-20 12:43:56,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:43:56,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:56,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:56,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:56,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:43:56,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:43:56,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:43:56,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:43:56,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:43:57,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:43:57,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232536080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:57,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:43:57,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2022-11-20 12:43:57,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288875795] [2022-11-20 12:43:57,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:57,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:43:57,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:57,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:43:57,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:43:57,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 657 [2022-11-20 12:43:57,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 621 transitions, 1476 flow. Second operand has 17 states, 17 states have (on average 554.8235294117648) internal successors, (9432), 17 states have internal predecessors, (9432), 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) [2022-11-20 12:43:57,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:57,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 657 [2022-11-20 12:43:57,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:44:01,307 INFO L130 PetriNetUnfolder]: 672/8558 cut-off events. [2022-11-20 12:44:01,307 INFO L131 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2022-11-20 12:44:01,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9771 conditions, 8558 events. 672/8558 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 84983 event pairs, 273 based on Foata normal form. 6/7290 useless extension candidates. Maximal degree in co-relation 9711. Up to 126 conditions per place. [2022-11-20 12:44:01,412 INFO L137 encePairwiseOnDemand]: 629/657 looper letters, 213 selfloop transitions, 95 changer transitions 0/818 dead transitions. [2022-11-20 12:44:01,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 818 transitions, 2618 flow [2022-11-20 12:44:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 12:44:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-20 12:44:01,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 26762 transitions. [2022-11-20 12:44:01,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8486174530695079 [2022-11-20 12:44:01,470 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 26762 transitions. [2022-11-20 12:44:01,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 26762 transitions. [2022-11-20 12:44:01,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:44:01,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 26762 transitions. [2022-11-20 12:44:01,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 557.5416666666666) internal successors, (26762), 48 states have internal predecessors, (26762), 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) [2022-11-20 12:44:01,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 657.0) internal successors, (32193), 49 states have internal predecessors, (32193), 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) [2022-11-20 12:44:01,593 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 657.0) internal successors, (32193), 49 states have internal predecessors, (32193), 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) [2022-11-20 12:44:01,594 INFO L175 Difference]: Start difference. First operand has 589 places, 621 transitions, 1476 flow. Second operand 48 states and 26762 transitions. [2022-11-20 12:44:01,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 818 transitions, 2618 flow [2022-11-20 12:44:01,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 818 transitions, 2612 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:44:01,612 INFO L231 Difference]: Finished difference. Result has 636 places, 660 transitions, 1860 flow [2022-11-20 12:44:01,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1860, PETRI_PLACES=636, PETRI_TRANSITIONS=660} [2022-11-20 12:44:01,614 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 39 predicate places. [2022-11-20 12:44:01,615 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 660 transitions, 1860 flow [2022-11-20 12:44:01,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 554.8235294117648) internal successors, (9432), 17 states have internal predecessors, (9432), 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) [2022-11-20 12:44:01,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:44:01,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:01,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:01,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:44:01,824 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:44:01,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:01,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1814690640, now seen corresponding path program 1 times [2022-11-20 12:44:01,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:01,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18001402] [2022-11-20 12:44:01,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:01,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:02,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:02,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18001402] [2022-11-20 12:44:02,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18001402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:02,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:02,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:44:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804883062] [2022-11-20 12:44:02,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:02,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:44:02,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:02,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:44:02,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:44:02,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 657 [2022-11-20 12:44:02,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 660 transitions, 1860 flow. Second operand has 8 states, 8 states have (on average 495.5) internal successors, (3964), 8 states have internal predecessors, (3964), 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) [2022-11-20 12:44:02,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:44:02,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 657 [2022-11-20 12:44:02,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:44:04,109 INFO L130 PetriNetUnfolder]: 461/6822 cut-off events. [2022-11-20 12:44:04,109 INFO L131 PetriNetUnfolder]: For 503/503 co-relation queries the response was YES. [2022-11-20 12:44:04,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7952 conditions, 6822 events. 461/6822 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 61752 event pairs, 147 based on Foata normal form. 1/5838 useless extension candidates. Maximal degree in co-relation 7552. Up to 682 conditions per place. [2022-11-20 12:44:04,181 INFO L137 encePairwiseOnDemand]: 645/657 looper letters, 154 selfloop transitions, 21 changer transitions 0/660 dead transitions. [2022-11-20 12:44:04,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 660 transitions, 2202 flow [2022-11-20 12:44:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:44:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:44:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4518 transitions. [2022-11-20 12:44:04,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640791476407914 [2022-11-20 12:44:04,196 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4518 transitions. [2022-11-20 12:44:04,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4518 transitions. [2022-11-20 12:44:04,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:44:04,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4518 transitions. [2022-11-20 12:44:04,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 502.0) internal successors, (4518), 9 states have internal predecessors, (4518), 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) [2022-11-20 12:44:04,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 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) [2022-11-20 12:44:04,231 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 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) [2022-11-20 12:44:04,232 INFO L175 Difference]: Start difference. First operand has 636 places, 660 transitions, 1860 flow. Second operand 9 states and 4518 transitions. [2022-11-20 12:44:04,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 660 transitions, 2202 flow [2022-11-20 12:44:04,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 660 transitions, 2079 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-20 12:44:04,249 INFO L231 Difference]: Finished difference. Result has 629 places, 658 transitions, 1767 flow [2022-11-20 12:44:04,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1767, PETRI_PLACES=629, PETRI_TRANSITIONS=658} [2022-11-20 12:44:04,252 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 32 predicate places. [2022-11-20 12:44:04,252 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 658 transitions, 1767 flow [2022-11-20 12:44:04,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 495.5) internal successors, (3964), 8 states have internal predecessors, (3964), 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) [2022-11-20 12:44:04,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:44:04,254 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:04,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:44:04,255 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:44:04,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:04,255 INFO L85 PathProgramCache]: Analyzing trace with hash 887061443, now seen corresponding path program 1 times [2022-11-20 12:44:04,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:04,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537837764] [2022-11-20 12:44:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:04,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:44:04,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:04,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537837764] [2022-11-20 12:44:04,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537837764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:04,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:04,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:44:04,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731167457] [2022-11-20 12:44:04,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:04,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:44:04,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:04,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:44:04,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:44:04,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 657 [2022-11-20 12:44:04,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 658 transitions, 1767 flow. Second operand has 5 states, 5 states have (on average 525.0) internal successors, (2625), 5 states have internal predecessors, (2625), 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) [2022-11-20 12:44:04,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:44:04,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 657 [2022-11-20 12:44:04,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:44:07,192 INFO L130 PetriNetUnfolder]: 671/8321 cut-off events. [2022-11-20 12:44:07,192 INFO L131 PetriNetUnfolder]: For 322/357 co-relation queries the response was YES. [2022-11-20 12:44:07,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9471 conditions, 8321 events. 671/8321 cut-off events. For 322/357 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 82555 event pairs, 273 based on Foata normal form. 0/7076 useless extension candidates. Maximal degree in co-relation 9134. Up to 814 conditions per place. [2022-11-20 12:44:07,284 INFO L137 encePairwiseOnDemand]: 650/657 looper letters, 80 selfloop transitions, 5 changer transitions 0/656 dead transitions. [2022-11-20 12:44:07,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 656 transitions, 1933 flow [2022-11-20 12:44:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:44:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:44:07,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2677 transitions. [2022-11-20 12:44:07,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8149162861491629 [2022-11-20 12:44:07,289 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2677 transitions. [2022-11-20 12:44:07,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2677 transitions. [2022-11-20 12:44:07,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:44:07,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2677 transitions. [2022-11-20 12:44:07,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 535.4) internal successors, (2677), 5 states have internal predecessors, (2677), 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) [2022-11-20 12:44:07,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 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) [2022-11-20 12:44:07,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 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) [2022-11-20 12:44:07,301 INFO L175 Difference]: Start difference. First operand has 629 places, 658 transitions, 1767 flow. Second operand 5 states and 2677 transitions. [2022-11-20 12:44:07,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 656 transitions, 1933 flow [2022-11-20 12:44:07,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 656 transitions, 1893 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:44:07,315 INFO L231 Difference]: Finished difference. Result has 624 places, 656 transitions, 1733 flow [2022-11-20 12:44:07,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1733, PETRI_PLACES=624, PETRI_TRANSITIONS=656} [2022-11-20 12:44:07,317 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 27 predicate places. [2022-11-20 12:44:07,317 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 656 transitions, 1733 flow [2022-11-20 12:44:07,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 525.0) internal successors, (2625), 5 states have internal predecessors, (2625), 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) [2022-11-20 12:44:07,318 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:44:07,318 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:07,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:44:07,319 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:44:07,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:07,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1729101961, now seen corresponding path program 1 times [2022-11-20 12:44:07,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:07,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479874799] [2022-11-20 12:44:07,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:07,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:44:07,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:07,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479874799] [2022-11-20 12:44:07,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479874799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:07,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:07,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:44:07,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760980456] [2022-11-20 12:44:07,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:07,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:44:07,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:07,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:44:07,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:44:07,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 598 out of 657 [2022-11-20 12:44:07,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 656 transitions, 1733 flow. Second operand has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 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) [2022-11-20 12:44:07,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:44:07,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 598 of 657 [2022-11-20 12:44:07,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:44:09,641 INFO L130 PetriNetUnfolder]: 671/8308 cut-off events. [2022-11-20 12:44:09,641 INFO L131 PetriNetUnfolder]: For 289/324 co-relation queries the response was YES. [2022-11-20 12:44:09,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9222 conditions, 8308 events. 671/8308 cut-off events. For 289/324 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 82443 event pairs, 273 based on Foata normal form. 0/7076 useless extension candidates. Maximal degree in co-relation 9103. Up to 604 conditions per place. [2022-11-20 12:44:09,750 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 21 selfloop transitions, 3 changer transitions 0/654 dead transitions. [2022-11-20 12:44:09,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 654 transitions, 1777 flow [2022-11-20 12:44:09,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:44:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:44:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2418 transitions. [2022-11-20 12:44:09,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200913242009132 [2022-11-20 12:44:09,756 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2418 transitions. [2022-11-20 12:44:09,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2418 transitions. [2022-11-20 12:44:09,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:44:09,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2418 transitions. [2022-11-20 12:44:09,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 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) [2022-11-20 12:44:09,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 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) [2022-11-20 12:44:09,769 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 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) [2022-11-20 12:44:09,769 INFO L175 Difference]: Start difference. First operand has 624 places, 656 transitions, 1733 flow. Second operand 4 states and 2418 transitions. [2022-11-20 12:44:09,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 654 transitions, 1777 flow [2022-11-20 12:44:09,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 654 transitions, 1767 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:44:09,786 INFO L231 Difference]: Finished difference. Result has 621 places, 654 transitions, 1725 flow [2022-11-20 12:44:09,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1725, PETRI_PLACES=621, PETRI_TRANSITIONS=654} [2022-11-20 12:44:09,789 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 24 predicate places. [2022-11-20 12:44:09,789 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 654 transitions, 1725 flow [2022-11-20 12:44:09,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 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) [2022-11-20 12:44:09,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:44:09,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:09,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:44:09,791 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:44:09,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:09,792 INFO L85 PathProgramCache]: Analyzing trace with hash -991433626, now seen corresponding path program 1 times [2022-11-20 12:44:09,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:09,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768223528] [2022-11-20 12:44:09,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:09,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:10,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:10,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768223528] [2022-11-20 12:44:10,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768223528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:44:10,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486755039] [2022-11-20 12:44:10,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:10,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:44:10,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:44:10,500 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:44:10,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:44:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:10,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:44:10,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:10,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:11,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486755039] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:44:11,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:44:11,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-20 12:44:11,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777955874] [2022-11-20 12:44:11,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:11,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:44:11,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:44:11,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:44:11,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-20 12:44:11,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 654 transitions, 1725 flow. Second operand has 32 states, 32 states have (on average 588.5) internal successors, (18832), 32 states have internal predecessors, (18832), 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) [2022-11-20 12:44:11,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:44:11,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-20 12:44:11,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:44:14,149 INFO L130 PetriNetUnfolder]: 254/6440 cut-off events. [2022-11-20 12:44:14,149 INFO L131 PetriNetUnfolder]: For 730/760 co-relation queries the response was YES. [2022-11-20 12:44:14,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7476 conditions, 6440 events. 254/6440 cut-off events. For 730/760 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 50678 event pairs, 0 based on Foata normal form. 16/5781 useless extension candidates. Maximal degree in co-relation 7404. Up to 84 conditions per place. [2022-11-20 12:44:14,203 INFO L137 encePairwiseOnDemand]: 638/657 looper letters, 306 selfloop transitions, 158 changer transitions 0/1005 dead transitions. [2022-11-20 12:44:14,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 1005 transitions, 4035 flow [2022-11-20 12:44:14,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 12:44:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 12:44:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 26220 transitions. [2022-11-20 12:44:14,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070153590701536 [2022-11-20 12:44:14,233 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 26220 transitions. [2022-11-20 12:44:14,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 26220 transitions. [2022-11-20 12:44:14,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:44:14,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 26220 transitions. [2022-11-20 12:44:14,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 595.9090909090909) internal successors, (26220), 44 states have internal predecessors, (26220), 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) [2022-11-20 12:44:14,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 657.0) internal successors, (29565), 45 states have internal predecessors, (29565), 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) [2022-11-20 12:44:14,305 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 657.0) internal successors, (29565), 45 states have internal predecessors, (29565), 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) [2022-11-20 12:44:14,305 INFO L175 Difference]: Start difference. First operand has 621 places, 654 transitions, 1725 flow. Second operand 44 states and 26220 transitions. [2022-11-20 12:44:14,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 1005 transitions, 4035 flow [2022-11-20 12:44:14,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 1005 transitions, 4029 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:44:14,326 INFO L231 Difference]: Finished difference. Result has 670 places, 747 transitions, 2723 flow [2022-11-20 12:44:14,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2723, PETRI_PLACES=670, PETRI_TRANSITIONS=747} [2022-11-20 12:44:14,328 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 73 predicate places. [2022-11-20 12:44:14,329 INFO L495 AbstractCegarLoop]: Abstraction has has 670 places, 747 transitions, 2723 flow [2022-11-20 12:44:14,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 588.5) internal successors, (18832), 32 states have internal predecessors, (18832), 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) [2022-11-20 12:44:14,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:44:14,332 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:14,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:14,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:44:14,539 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:44:14,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:14,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1970647165, now seen corresponding path program 1 times [2022-11-20 12:44:14,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:14,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063398519] [2022-11-20 12:44:14,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:14,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:44:14,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:14,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063398519] [2022-11-20 12:44:14,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063398519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:14,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:14,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:44:14,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872411726] [2022-11-20 12:44:14,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:14,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:44:14,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:14,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:44:14,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:44:14,696 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-20 12:44:14,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 747 transitions, 2723 flow. Second operand has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 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) [2022-11-20 12:44:14,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:44:14,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-20 12:44:14,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:44:18,193 INFO L130 PetriNetUnfolder]: 464/10955 cut-off events. [2022-11-20 12:44:18,193 INFO L131 PetriNetUnfolder]: For 941/1001 co-relation queries the response was YES. [2022-11-20 12:44:18,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12910 conditions, 10955 events. 464/10955 cut-off events. For 941/1001 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 105622 event pairs, 0 based on Foata normal form. 0/9695 useless extension candidates. Maximal degree in co-relation 12242. Up to 646 conditions per place. [2022-11-20 12:44:18,298 INFO L137 encePairwiseOnDemand]: 637/657 looper letters, 58 selfloop transitions, 14 changer transitions 0/778 dead transitions. [2022-11-20 12:44:18,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 778 transitions, 2935 flow [2022-11-20 12:44:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:44:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:44:18,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3003 transitions. [2022-11-20 12:44:18,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9141552511415525 [2022-11-20 12:44:18,303 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3003 transitions. [2022-11-20 12:44:18,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3003 transitions. [2022-11-20 12:44:18,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:44:18,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3003 transitions. [2022-11-20 12:44:18,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 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) [2022-11-20 12:44:18,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 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) [2022-11-20 12:44:18,312 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 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) [2022-11-20 12:44:18,312 INFO L175 Difference]: Start difference. First operand has 670 places, 747 transitions, 2723 flow. Second operand 5 states and 3003 transitions. [2022-11-20 12:44:18,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 778 transitions, 2935 flow [2022-11-20 12:44:18,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 659 places, 778 transitions, 2835 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-20 12:44:18,336 INFO L231 Difference]: Finished difference. Result has 662 places, 758 transitions, 2727 flow [2022-11-20 12:44:18,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=733, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2727, PETRI_PLACES=662, PETRI_TRANSITIONS=758} [2022-11-20 12:44:18,337 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 65 predicate places. [2022-11-20 12:44:18,338 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 758 transitions, 2727 flow [2022-11-20 12:44:18,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 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) [2022-11-20 12:44:18,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:44:18,339 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:18,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:44:18,339 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-20 12:44:18,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash 945320687, now seen corresponding path program 1 times [2022-11-20 12:44:18,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:18,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427391126] [2022-11-20 12:44:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:18,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:44:18,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:18,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427391126] [2022-11-20 12:44:18,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427391126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:44:18,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748285772] [2022-11-20 12:44:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:18,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:44:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:44:18,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:44:18,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7323904-b225-44d8-81df-0317c430c637/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:44:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:18,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:44:18,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:19,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:19,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:19,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748285772] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:44:19,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:44:19,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 25 [2022-11-20 12:44:19,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341194729] [2022-11-20 12:44:19,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:19,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 12:44:19,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:19,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 12:44:19,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:44:19,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 504 out of 657 [2022-11-20 12:44:19,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 758 transitions, 2727 flow. Second operand has 25 states, 25 states have (on average 509.76) internal successors, (12744), 25 states have internal predecessors, (12744), 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) [2022-11-20 12:44:19,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:44:19,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 504 of 657 [2022-11-20 12:44:19,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand