./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:44:14,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:44:14,474 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:44:14,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:44:14,484 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:44:14,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:44:14,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:44:14,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:44:14,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:44:14,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:44:14,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:44:14,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:44:14,540 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:44:14,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:44:14,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:44:14,542 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:44:14,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:44:14,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:44:14,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:44:14,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:44:14,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:44:14,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:44:14,555 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:44:14,558 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:44:14,559 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:44:14,560 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:44:14,560 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:44:14,561 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:44:14,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:44:14,562 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:44:14,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:14,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:44:14,565 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:44:14,565 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:44:14,565 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:44:14,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:44:14,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:44:14,566 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:44:14,566 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:44:14,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:44:14,567 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:44:14,567 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2023-11-19 07:44:14,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:44:15,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:44:15,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:44:15,012 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:44:15,012 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:44:15,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-19 07:44:18,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:44:18,711 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:44:18,711 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-19 07:44:18,721 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/data/eb33e27cb/1b8eeb20f1184828b02d4295d22bf15a/FLAG3faf44ed5 [2023-11-19 07:44:18,739 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/data/eb33e27cb/1b8eeb20f1184828b02d4295d22bf15a [2023-11-19 07:44:18,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:44:18,744 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:44:18,746 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:18,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:44:18,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:44:18,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:18" (1/1) ... [2023-11-19 07:44:18,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a8f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:18, skipping insertion in model container [2023-11-19 07:44:18,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:18" (1/1) ... [2023-11-19 07:44:18,788 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:44:19,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:19,031 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:44:19,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:19,101 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:44:19,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19 WrapperNode [2023-11-19 07:44:19,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:19,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:19,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:44:19,104 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:44:19,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19" (1/1) ... [2023-11-19 07:44:19,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19" (1/1) ... [2023-11-19 07:44:19,173 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 191 [2023-11-19 07:44:19,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:19,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:44:19,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:44:19,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:44:19,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19" (1/1) ... [2023-11-19 07:44:19,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19" (1/1) ... [2023-11-19 07:44:19,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19" (1/1) ... [2023-11-19 07:44:19,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19" (1/1) ... [2023-11-19 07:44:19,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19" (1/1) ... [2023-11-19 07:44:19,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19" (1/1) ... [2023-11-19 07:44:19,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19" (1/1) ... [2023-11-19 07:44:19,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19" (1/1) ... [2023-11-19 07:44:19,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:44:19,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:44:19,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:44:19,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:44:19,235 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19" (1/1) ... [2023-11-19 07:44:19,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:19,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:19,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:44:19,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:44:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:44:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:44:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:44:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:44:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:44:19,324 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:44:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:44:19,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:44:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:44:19,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:44:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:44:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:44:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:44:19,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:44:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:44:19,328 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:44:19,489 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:44:19,492 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:44:20,095 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:44:20,114 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:44:20,114 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 07:44:20,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:20 BoogieIcfgContainer [2023-11-19 07:44:20,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:44:20,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:44:20,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:44:20,129 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:44:20,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:44:18" (1/3) ... [2023-11-19 07:44:20,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68950be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:20, skipping insertion in model container [2023-11-19 07:44:20,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:19" (2/3) ... [2023-11-19 07:44:20,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68950be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:20, skipping insertion in model container [2023-11-19 07:44:20,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:20" (3/3) ... [2023-11-19 07:44:20,132 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-11-19 07:44:20,144 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:44:20,158 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:44:20,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-19 07:44:20,161 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:44:20,359 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:44:20,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 354 transitions, 729 flow [2023-11-19 07:44:20,612 INFO L124 PetriNetUnfolderBase]: 28/351 cut-off events. [2023-11-19 07:44:20,612 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:44:20,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 351 events. 28/351 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 569 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 281. Up to 3 conditions per place. [2023-11-19 07:44:20,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 354 transitions, 729 flow [2023-11-19 07:44:20,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 327 transitions, 669 flow [2023-11-19 07:44:20,652 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:44:20,676 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 327 transitions, 669 flow [2023-11-19 07:44:20,682 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 327 transitions, 669 flow [2023-11-19 07:44:20,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 327 transitions, 669 flow [2023-11-19 07:44:20,811 INFO L124 PetriNetUnfolderBase]: 27/327 cut-off events. [2023-11-19 07:44:20,811 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:44:20,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 327 events. 27/327 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 567 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 281. Up to 3 conditions per place. [2023-11-19 07:44:20,829 INFO L119 LiptonReduction]: Number of co-enabled transitions 12480 [2023-11-19 07:44:34,204 INFO L134 LiptonReduction]: Checked pairs total: 18043 [2023-11-19 07:44:34,204 INFO L136 LiptonReduction]: Total number of compositions: 361 [2023-11-19 07:44:34,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:34,228 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=LoopHeads, 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;@7add6924, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:34,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-19 07:44:34,232 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:34,232 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:44:34,232 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:34,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:34,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:44:34,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 07:44:34,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:34,240 INFO L85 PathProgramCache]: Analyzing trace with hash 42901, now seen corresponding path program 1 times [2023-11-19 07:44:34,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:34,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820688028] [2023-11-19 07:44:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:34,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:34,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:34,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820688028] [2023-11-19 07:44:34,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820688028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:34,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:34,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:34,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934766816] [2023-11-19 07:44:34,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:34,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:34,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:34,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:34,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 715 [2023-11-19 07:44:34,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 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) [2023-11-19 07:44:34,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:34,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 715 [2023-11-19 07:44:34,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:35,838 INFO L124 PetriNetUnfolderBase]: 5112/6981 cut-off events. [2023-11-19 07:44:35,839 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-11-19 07:44:35,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14178 conditions, 6981 events. 5112/6981 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 32373 event pairs, 3657 based on Foata normal form. 0/3204 useless extension candidates. Maximal degree in co-relation 13076. Up to 6885 conditions per place. [2023-11-19 07:44:35,915 INFO L140 encePairwiseOnDemand]: 710/715 looper letters, 50 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-19 07:44:35,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 227 flow [2023-11-19 07:44:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1012 transitions. [2023-11-19 07:44:35,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2023-11-19 07:44:35,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1012 transitions. [2023-11-19 07:44:35,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1012 transitions. [2023-11-19 07:44:35,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:35,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1012 transitions. [2023-11-19 07:44:35,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 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) [2023-11-19 07:44:35,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 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) [2023-11-19 07:44:35,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 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) [2023-11-19 07:44:35,991 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1012 transitions. [2023-11-19 07:44:35,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 227 flow [2023-11-19 07:44:36,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 218 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:44:36,004 INFO L231 Difference]: Finished difference. Result has 50 places, 54 transitions, 118 flow [2023-11-19 07:44:36,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=54} [2023-11-19 07:44:36,012 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-11-19 07:44:36,012 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 54 transitions, 118 flow [2023-11-19 07:44:36,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 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) [2023-11-19 07:44:36,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:36,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:44:36,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:44:36,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 07:44:36,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:36,016 INFO L85 PathProgramCache]: Analyzing trace with hash 42903, now seen corresponding path program 1 times [2023-11-19 07:44:36,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:36,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198941685] [2023-11-19 07:44:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:36,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:36,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:36,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198941685] [2023-11-19 07:44:36,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198941685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:36,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:36,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:36,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561275511] [2023-11-19 07:44:36,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:36,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:36,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:36,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:36,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:36,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 715 [2023-11-19 07:44:36,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 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) [2023-11-19 07:44:36,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:36,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 715 [2023-11-19 07:44:36,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:37,261 INFO L124 PetriNetUnfolderBase]: 5115/6987 cut-off events. [2023-11-19 07:44:37,262 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-19 07:44:37,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14103 conditions, 6987 events. 5115/6987 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 32397 event pairs, 3657 based on Foata normal form. 0/3209 useless extension candidates. Maximal degree in co-relation 14065. Up to 6895 conditions per place. [2023-11-19 07:44:37,343 INFO L140 encePairwiseOnDemand]: 705/715 looper letters, 51 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2023-11-19 07:44:37,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 248 flow [2023-11-19 07:44:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:37,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1018 transitions. [2023-11-19 07:44:37,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745920745920746 [2023-11-19 07:44:37,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1018 transitions. [2023-11-19 07:44:37,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1018 transitions. [2023-11-19 07:44:37,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:37,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1018 transitions. [2023-11-19 07:44:37,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.3333333333333) internal successors, (1018), 3 states have internal predecessors, (1018), 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) [2023-11-19 07:44:37,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 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) [2023-11-19 07:44:37,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 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) [2023-11-19 07:44:37,376 INFO L175 Difference]: Start difference. First operand has 50 places, 54 transitions, 118 flow. Second operand 3 states and 1018 transitions. [2023-11-19 07:44:37,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 248 flow [2023-11-19 07:44:37,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:37,381 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 172 flow [2023-11-19 07:44:37,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2023-11-19 07:44:37,384 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-11-19 07:44:37,385 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 172 flow [2023-11-19 07:44:37,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 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) [2023-11-19 07:44:37,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:37,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:44:37,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:44:37,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 07:44:37,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:37,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1331232, now seen corresponding path program 1 times [2023-11-19 07:44:37,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:37,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472187106] [2023-11-19 07:44:37,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:37,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:37,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:37,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472187106] [2023-11-19 07:44:37,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472187106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:37,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539656799] [2023-11-19 07:44:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:37,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:37,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:37,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:37,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:44:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:37,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:44:37,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:37,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:37,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539656799] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:37,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:37,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-19 07:44:37,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208256070] [2023-11-19 07:44:37,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:37,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:44:37,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:37,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:44:37,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:44:37,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 715 [2023-11-19 07:44:37,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 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) [2023-11-19 07:44:37,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:37,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 715 [2023-11-19 07:44:37,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:38,746 INFO L124 PetriNetUnfolderBase]: 5124/7005 cut-off events. [2023-11-19 07:44:38,747 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-19 07:44:38,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14184 conditions, 7005 events. 5124/7005 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 32470 event pairs, 3657 based on Foata normal form. 0/3226 useless extension candidates. Maximal degree in co-relation 14065. Up to 6898 conditions per place. [2023-11-19 07:44:38,791 INFO L140 encePairwiseOnDemand]: 705/715 looper letters, 51 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2023-11-19 07:44:38,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 408 flow [2023-11-19 07:44:38,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:44:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:44:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1999 transitions. [2023-11-19 07:44:38,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465967365967366 [2023-11-19 07:44:38,799 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1999 transitions. [2023-11-19 07:44:38,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1999 transitions. [2023-11-19 07:44:38,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:38,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1999 transitions. [2023-11-19 07:44:38,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 333.1666666666667) internal successors, (1999), 6 states have internal predecessors, (1999), 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) [2023-11-19 07:44:38,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 715.0) internal successors, (5005), 7 states have internal predecessors, (5005), 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) [2023-11-19 07:44:38,822 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 715.0) internal successors, (5005), 7 states have internal predecessors, (5005), 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) [2023-11-19 07:44:38,823 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 172 flow. Second operand 6 states and 1999 transitions. [2023-11-19 07:44:38,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 408 flow [2023-11-19 07:44:38,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:38,827 INFO L231 Difference]: Finished difference. Result has 58 places, 78 transitions, 333 flow [2023-11-19 07:44:38,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=58, PETRI_TRANSITIONS=78} [2023-11-19 07:44:38,828 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-11-19 07:44:38,829 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 78 transitions, 333 flow [2023-11-19 07:44:38,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 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) [2023-11-19 07:44:38,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:38,831 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:44:38,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:39,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:39,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 07:44:39,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:39,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1005257175, now seen corresponding path program 2 times [2023-11-19 07:44:39,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:39,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638080360] [2023-11-19 07:44:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:39,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:39,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:39,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638080360] [2023-11-19 07:44:39,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638080360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:39,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224523157] [2023-11-19 07:44:39,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:44:39,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:39,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:39,222 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:39,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:44:39,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:44:39,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:44:39,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:44:39,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:44:39,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:39,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224523157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:39,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:44:39,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 07:44:39,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443931182] [2023-11-19 07:44:39,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:39,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:39,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:39,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:39,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:44:39,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 715 [2023-11-19 07:44:39,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 78 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 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) [2023-11-19 07:44:39,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:39,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 715 [2023-11-19 07:44:39,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:40,381 INFO L124 PetriNetUnfolderBase]: 5124/7004 cut-off events. [2023-11-19 07:44:40,381 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-19 07:44:40,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14224 conditions, 7004 events. 5124/7004 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 32464 event pairs, 3657 based on Foata normal form. 1/3228 useless extension candidates. Maximal degree in co-relation 14136. Up to 6911 conditions per place. [2023-11-19 07:44:40,425 INFO L140 encePairwiseOnDemand]: 712/715 looper letters, 69 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-11-19 07:44:40,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 473 flow [2023-11-19 07:44:40,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1027 transitions. [2023-11-19 07:44:40,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2023-11-19 07:44:40,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1027 transitions. [2023-11-19 07:44:40,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1027 transitions. [2023-11-19 07:44:40,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:40,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1027 transitions. [2023-11-19 07:44:40,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 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) [2023-11-19 07:44:40,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 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) [2023-11-19 07:44:40,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 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) [2023-11-19 07:44:40,445 INFO L175 Difference]: Start difference. First operand has 58 places, 78 transitions, 333 flow. Second operand 3 states and 1027 transitions. [2023-11-19 07:44:40,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 473 flow [2023-11-19 07:44:40,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 436 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:40,451 INFO L231 Difference]: Finished difference. Result has 58 places, 77 transitions, 298 flow [2023-11-19 07:44:40,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=58, PETRI_TRANSITIONS=77} [2023-11-19 07:44:40,452 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-11-19 07:44:40,453 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 77 transitions, 298 flow [2023-11-19 07:44:40,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 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) [2023-11-19 07:44:40,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:40,454 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-19 07:44:40,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:40,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:40,675 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 07:44:40,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2063959274, now seen corresponding path program 1 times [2023-11-19 07:44:40,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:40,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493156626] [2023-11-19 07:44:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:40,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:40,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:40,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493156626] [2023-11-19 07:44:40,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493156626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:40,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340097252] [2023-11-19 07:44:40,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:40,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:40,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:40,844 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:40,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:44:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:40,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:44:40,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:40,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:41,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340097252] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:41,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:41,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:44:41,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408333098] [2023-11-19 07:44:41,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:41,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:44:41,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:41,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:44:41,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:44:41,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 715 [2023-11-19 07:44:41,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 77 transitions, 298 flow. Second operand has 13 states, 13 states have (on average 320.15384615384613) internal successors, (4162), 13 states have internal predecessors, (4162), 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) [2023-11-19 07:44:41,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:41,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 715 [2023-11-19 07:44:41,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:42,273 INFO L124 PetriNetUnfolderBase]: 5142/7040 cut-off events. [2023-11-19 07:44:42,273 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-19 07:44:42,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14348 conditions, 7040 events. 5142/7040 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 32699 event pairs, 3657 based on Foata normal form. 12/3266 useless extension candidates. Maximal degree in co-relation 14245. Up to 6903 conditions per place. [2023-11-19 07:44:42,377 INFO L140 encePairwiseOnDemand]: 706/715 looper letters, 50 selfloop transitions, 61 changer transitions 0/113 dead transitions. [2023-11-19 07:44:42,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 736 flow [2023-11-19 07:44:42,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:44:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:44:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3951 transitions. [2023-11-19 07:44:42,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604895104895105 [2023-11-19 07:44:42,392 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3951 transitions. [2023-11-19 07:44:42,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3951 transitions. [2023-11-19 07:44:42,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:42,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3951 transitions. [2023-11-19 07:44:42,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 329.25) internal successors, (3951), 12 states have internal predecessors, (3951), 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) [2023-11-19 07:44:42,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 715.0) internal successors, (9295), 13 states have internal predecessors, (9295), 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) [2023-11-19 07:44:42,427 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 715.0) internal successors, (9295), 13 states have internal predecessors, (9295), 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) [2023-11-19 07:44:42,428 INFO L175 Difference]: Start difference. First operand has 58 places, 77 transitions, 298 flow. Second operand 12 states and 3951 transitions. [2023-11-19 07:44:42,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 736 flow [2023-11-19 07:44:42,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:42,434 INFO L231 Difference]: Finished difference. Result has 73 places, 113 transitions, 698 flow [2023-11-19 07:44:42,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=698, PETRI_PLACES=73, PETRI_TRANSITIONS=113} [2023-11-19 07:44:42,435 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2023-11-19 07:44:42,435 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 113 transitions, 698 flow [2023-11-19 07:44:42,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 320.15384615384613) internal successors, (4162), 13 states have internal predecessors, (4162), 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) [2023-11-19 07:44:42,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:42,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:42,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:42,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:42,658 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 07:44:42,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash 107544841, now seen corresponding path program 1 times [2023-11-19 07:44:42,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:42,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78774444] [2023-11-19 07:44:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:42,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:42,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:42,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78774444] [2023-11-19 07:44:42,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78774444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:42,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:42,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:42,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106008526] [2023-11-19 07:44:42,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:42,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:44:42,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:42,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:44:42,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:44:43,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 715 [2023-11-19 07:44:43,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 113 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:43,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:43,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 715 [2023-11-19 07:44:43,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:45,080 INFO L124 PetriNetUnfolderBase]: 9547/12993 cut-off events. [2023-11-19 07:44:45,081 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2023-11-19 07:44:45,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26631 conditions, 12993 events. 9547/12993 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 64533 event pairs, 6602 based on Foata normal form. 0/6162 useless extension candidates. Maximal degree in co-relation 26435. Up to 6486 conditions per place. [2023-11-19 07:44:45,162 INFO L140 encePairwiseOnDemand]: 707/715 looper letters, 193 selfloop transitions, 7 changer transitions 0/202 dead transitions. [2023-11-19 07:44:45,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 202 transitions, 1616 flow [2023-11-19 07:44:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:44:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:44:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1655 transitions. [2023-11-19 07:44:45,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46293706293706294 [2023-11-19 07:44:45,169 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1655 transitions. [2023-11-19 07:44:45,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1655 transitions. [2023-11-19 07:44:45,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:45,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1655 transitions. [2023-11-19 07:44:45,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 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) [2023-11-19 07:44:45,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 715.0) internal successors, (4290), 6 states have internal predecessors, (4290), 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) [2023-11-19 07:44:45,186 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 715.0) internal successors, (4290), 6 states have internal predecessors, (4290), 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) [2023-11-19 07:44:45,186 INFO L175 Difference]: Start difference. First operand has 73 places, 113 transitions, 698 flow. Second operand 5 states and 1655 transitions. [2023-11-19 07:44:45,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 202 transitions, 1616 flow [2023-11-19 07:44:45,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 202 transitions, 1312 flow, removed 91 selfloop flow, removed 5 redundant places. [2023-11-19 07:44:45,198 INFO L231 Difference]: Finished difference. Result has 75 places, 117 transitions, 574 flow [2023-11-19 07:44:45,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=574, PETRI_PLACES=75, PETRI_TRANSITIONS=117} [2023-11-19 07:44:45,203 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-11-19 07:44:45,203 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 117 transitions, 574 flow [2023-11-19 07:44:45,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:45,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:45,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:45,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:44:45,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 07:44:45,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash 107544774, now seen corresponding path program 1 times [2023-11-19 07:44:45,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:45,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45612873] [2023-11-19 07:44:45,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:45,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:45,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:45,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45612873] [2023-11-19 07:44:45,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45612873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:45,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:45,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:44:45,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534415946] [2023-11-19 07:44:45,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:45,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:44:45,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:45,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:44:45,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:44:45,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 715 [2023-11-19 07:44:45,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 117 transitions, 574 flow. Second operand has 5 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 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) [2023-11-19 07:44:45,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:45,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 715 [2023-11-19 07:44:45,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:48,512 INFO L124 PetriNetUnfolderBase]: 18170/24685 cut-off events. [2023-11-19 07:44:48,512 INFO L125 PetriNetUnfolderBase]: For 2038/2038 co-relation queries the response was YES. [2023-11-19 07:44:48,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50990 conditions, 24685 events. 18170/24685 cut-off events. For 2038/2038 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 133220 event pairs, 12492 based on Foata normal form. 324/12800 useless extension candidates. Maximal degree in co-relation 50765. Up to 12212 conditions per place. [2023-11-19 07:44:48,711 INFO L140 encePairwiseOnDemand]: 707/715 looper letters, 159 selfloop transitions, 20 changer transitions 0/181 dead transitions. [2023-11-19 07:44:48,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 181 transitions, 1169 flow [2023-11-19 07:44:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:44:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:44:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1960 transitions. [2023-11-19 07:44:48,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568764568764569 [2023-11-19 07:44:48,723 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1960 transitions. [2023-11-19 07:44:48,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1960 transitions. [2023-11-19 07:44:48,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:48,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1960 transitions. [2023-11-19 07:44:48,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 326.6666666666667) internal successors, (1960), 6 states have internal predecessors, (1960), 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) [2023-11-19 07:44:48,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 715.0) internal successors, (5005), 7 states have internal predecessors, (5005), 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) [2023-11-19 07:44:48,748 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 715.0) internal successors, (5005), 7 states have internal predecessors, (5005), 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) [2023-11-19 07:44:48,748 INFO L175 Difference]: Start difference. First operand has 75 places, 117 transitions, 574 flow. Second operand 6 states and 1960 transitions. [2023-11-19 07:44:48,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 181 transitions, 1169 flow [2023-11-19 07:44:48,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 181 transitions, 1165 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:48,762 INFO L231 Difference]: Finished difference. Result has 83 places, 120 transitions, 664 flow [2023-11-19 07:44:48,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=664, PETRI_PLACES=83, PETRI_TRANSITIONS=120} [2023-11-19 07:44:48,764 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2023-11-19 07:44:48,764 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 120 transitions, 664 flow [2023-11-19 07:44:48,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 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) [2023-11-19 07:44:48,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:48,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:48,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:44:48,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 07:44:48,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:48,768 INFO L85 PathProgramCache]: Analyzing trace with hash 107544572, now seen corresponding path program 1 times [2023-11-19 07:44:48,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:48,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698358130] [2023-11-19 07:44:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:48,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:48,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698358130] [2023-11-19 07:44:48,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698358130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:48,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:48,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:48,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556327048] [2023-11-19 07:44:48,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:48,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:48,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:48,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:48,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:48,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 715 [2023-11-19 07:44:48,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 120 transitions, 664 flow. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:48,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:48,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 715 [2023-11-19 07:44:48,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:52,931 INFO L124 PetriNetUnfolderBase]: 24794/34101 cut-off events. [2023-11-19 07:44:52,931 INFO L125 PetriNetUnfolderBase]: For 3364/3364 co-relation queries the response was YES. [2023-11-19 07:44:53,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70077 conditions, 34101 events. 24794/34101 cut-off events. For 3364/3364 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 201898 event pairs, 12492 based on Foata normal form. 0/17691 useless extension candidates. Maximal degree in co-relation 69844. Up to 25678 conditions per place. [2023-11-19 07:44:53,181 INFO L140 encePairwiseOnDemand]: 709/715 looper letters, 144 selfloop transitions, 4 changer transitions 0/150 dead transitions. [2023-11-19 07:44:53,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 150 transitions, 1023 flow [2023-11-19 07:44:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1076 transitions. [2023-11-19 07:44:53,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016317016317017 [2023-11-19 07:44:53,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1076 transitions. [2023-11-19 07:44:53,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1076 transitions. [2023-11-19 07:44:53,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:53,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1076 transitions. [2023-11-19 07:44:53,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 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) [2023-11-19 07:44:53,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 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) [2023-11-19 07:44:53,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 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) [2023-11-19 07:44:53,198 INFO L175 Difference]: Start difference. First operand has 83 places, 120 transitions, 664 flow. Second operand 3 states and 1076 transitions. [2023-11-19 07:44:53,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 150 transitions, 1023 flow [2023-11-19 07:44:53,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 150 transitions, 1012 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:53,210 INFO L231 Difference]: Finished difference. Result has 85 places, 123 transitions, 681 flow [2023-11-19 07:44:53,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=681, PETRI_PLACES=85, PETRI_TRANSITIONS=123} [2023-11-19 07:44:53,214 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2023-11-19 07:44:53,215 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 123 transitions, 681 flow [2023-11-19 07:44:53,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:53,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:53,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:53,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:44:53,218 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 07:44:53,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:53,219 INFO L85 PathProgramCache]: Analyzing trace with hash -766222638, now seen corresponding path program 1 times [2023-11-19 07:44:53,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:53,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015062551] [2023-11-19 07:44:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:53,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:53,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:53,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015062551] [2023-11-19 07:44:53,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015062551] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:53,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100216724] [2023-11-19 07:44:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:53,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:53,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:53,373 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:53,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:44:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:53,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:44:53,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:44:53,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100216724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:53,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:44:53,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-19 07:44:53,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022083983] [2023-11-19 07:44:53,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:53,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:44:53,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:53,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:44:53,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:44:53,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 715 [2023-11-19 07:44:53,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 123 transitions, 681 flow. Second operand has 4 states, 4 states have (on average 331.25) internal successors, (1325), 4 states have internal predecessors, (1325), 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) [2023-11-19 07:44:53,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:53,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 715 [2023-11-19 07:44:53,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:57,019 INFO L124 PetriNetUnfolderBase]: 21234/28599 cut-off events. [2023-11-19 07:44:57,020 INFO L125 PetriNetUnfolderBase]: For 7989/7989 co-relation queries the response was YES. [2023-11-19 07:44:57,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65745 conditions, 28599 events. 21234/28599 cut-off events. For 7989/7989 co-relation queries the response was YES. Maximal size of possible extension queue 1212. Compared 152535 event pairs, 14168 based on Foata normal form. 284/17709 useless extension candidates. Maximal degree in co-relation 65511. Up to 28227 conditions per place. [2023-11-19 07:44:57,256 INFO L140 encePairwiseOnDemand]: 711/715 looper letters, 106 selfloop transitions, 12 changer transitions 0/120 dead transitions. [2023-11-19 07:44:57,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 120 transitions, 901 flow [2023-11-19 07:44:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:44:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:44:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1367 transitions. [2023-11-19 07:44:57,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477972027972028 [2023-11-19 07:44:57,272 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1367 transitions. [2023-11-19 07:44:57,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1367 transitions. [2023-11-19 07:44:57,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:57,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1367 transitions. [2023-11-19 07:44:57,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 341.75) internal successors, (1367), 4 states have internal predecessors, (1367), 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) [2023-11-19 07:44:57,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 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) [2023-11-19 07:44:57,293 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 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) [2023-11-19 07:44:57,294 INFO L175 Difference]: Start difference. First operand has 85 places, 123 transitions, 681 flow. Second operand 4 states and 1367 transitions. [2023-11-19 07:44:57,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 120 transitions, 901 flow [2023-11-19 07:44:57,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 120 transitions, 865 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:44:57,309 INFO L231 Difference]: Finished difference. Result has 82 places, 120 transitions, 653 flow [2023-11-19 07:44:57,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=653, PETRI_PLACES=82, PETRI_TRANSITIONS=120} [2023-11-19 07:44:57,311 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2023-11-19 07:44:57,311 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 120 transitions, 653 flow [2023-11-19 07:44:57,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 331.25) internal successors, (1325), 4 states have internal predecessors, (1325), 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) [2023-11-19 07:44:57,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:57,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:57,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:57,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:44:57,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 07:44:57,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:57,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1577650470, now seen corresponding path program 1 times [2023-11-19 07:44:57,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:57,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865816163] [2023-11-19 07:44:57,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:57,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:57,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865816163] [2023-11-19 07:44:57,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865816163] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:57,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624283708] [2023-11-19 07:44:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:57,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:57,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:57,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:57,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:44:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:57,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:44:57,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:44:58,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:44:58,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624283708] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:58,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:44:58,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 2] total 9 [2023-11-19 07:44:58,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754102416] [2023-11-19 07:44:58,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:58,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:44:58,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:58,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:44:58,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:44:58,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 715 [2023-11-19 07:44:58,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 120 transitions, 653 flow. Second operand has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 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) [2023-11-19 07:44:58,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:58,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 715 [2023-11-19 07:44:58,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:01,674 INFO L124 PetriNetUnfolderBase]: 20702/27917 cut-off events. [2023-11-19 07:45:01,674 INFO L125 PetriNetUnfolderBase]: For 5162/5162 co-relation queries the response was YES. [2023-11-19 07:45:01,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61950 conditions, 27917 events. 20702/27917 cut-off events. For 5162/5162 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 148582 event pairs, 13860 based on Foata normal form. 284/17231 useless extension candidates. Maximal degree in co-relation 61718. Up to 27565 conditions per place. [2023-11-19 07:45:01,862 INFO L140 encePairwiseOnDemand]: 713/715 looper letters, 115 selfloop transitions, 1 changer transitions 0/118 dead transitions. [2023-11-19 07:45:01,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 118 transitions, 872 flow [2023-11-19 07:45:01,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 958 transitions. [2023-11-19 07:45:01,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4466200466200466 [2023-11-19 07:45:01,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 958 transitions. [2023-11-19 07:45:01,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 958 transitions. [2023-11-19 07:45:01,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:01,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 958 transitions. [2023-11-19 07:45:01,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 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) [2023-11-19 07:45:01,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 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) [2023-11-19 07:45:01,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 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) [2023-11-19 07:45:01,878 INFO L175 Difference]: Start difference. First operand has 82 places, 120 transitions, 653 flow. Second operand 3 states and 958 transitions. [2023-11-19 07:45:01,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 118 transitions, 872 flow [2023-11-19 07:45:01,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 851 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:45:01,889 INFO L231 Difference]: Finished difference. Result has 78 places, 118 transitions, 621 flow [2023-11-19 07:45:01,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=621, PETRI_PLACES=78, PETRI_TRANSITIONS=118} [2023-11-19 07:45:01,890 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2023-11-19 07:45:01,890 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 118 transitions, 621 flow [2023-11-19 07:45:01,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 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) [2023-11-19 07:45:01,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:01,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:01,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:02,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af94a52c-dac0-4bac-96ba-98b49fc15525/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:45:02,106 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 07:45:02,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:02,106 INFO L85 PathProgramCache]: Analyzing trace with hash 275093441, now seen corresponding path program 1 times [2023-11-19 07:45:02,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:02,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369006498] [2023-11-19 07:45:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:02,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:02,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:02,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369006498] [2023-11-19 07:45:02,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369006498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:02,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:02,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249624381] [2023-11-19 07:45:02,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:02,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:02,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:02,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:02,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:02,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 715 [2023-11-19 07:45:02,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 118 transitions, 621 flow. Second operand has 3 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 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) [2023-11-19 07:45:02,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:02,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 715 [2023-11-19 07:45:02,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand