./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/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_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/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_7acfbb67-7207-4335-85b4-ce14e8feaa42/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 58f1358e24877c92a149b6121e272e93974801203e91da3c444aa78d712ada40 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:19,617 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:19,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:06:19,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:19,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:19,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:19,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:19,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:19,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:19,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:19,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:19,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:19,759 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:19,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:19,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:06:19,761 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:19,762 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:19,762 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:19,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:19,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:06:19,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:19,765 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:06:19,766 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:06:19,766 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:06:19,767 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:19,767 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:19,768 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:19,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:19,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:19,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:19,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:19,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:19,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:19,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:06:19,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:19,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:19,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:19,774 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:06:19,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:19,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:19,775 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:19,775 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_7acfbb67-7207-4335-85b4-ce14e8feaa42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58f1358e24877c92a149b6121e272e93974801203e91da3c444aa78d712ada40 [2023-11-19 08:06:20,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:20,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:20,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:20,051 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:20,051 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:20,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2023-11-19 08:06:23,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:23,403 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:23,403 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2023-11-19 08:06:23,415 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/data/af105db47/52adf1436b554512abde28ea9c9b22a3/FLAG9645e85e5 [2023-11-19 08:06:23,432 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/data/af105db47/52adf1436b554512abde28ea9c9b22a3 [2023-11-19 08:06:23,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:23,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:23,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:23,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:23,451 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:23,452 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,453 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e27189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23, skipping insertion in model container [2023-11-19 08:06:23,453 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,486 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:23,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:23,693 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:23,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:23,743 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:23,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23 WrapperNode [2023-11-19 08:06:23,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:23,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:23,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:23,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:23,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,801 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 219 [2023-11-19 08:06:23,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:23,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:23,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:23,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:23,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:23,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:23,837 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:23,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:23,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23" (1/1) ... [2023-11-19 08:06:23,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:23,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:23,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:23,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 08:06:23,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 08:06:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 08:06:23,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 08:06:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 08:06:23,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 08:06:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:06:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:06:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:23,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:06:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:06:23,926 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 08:06:24,042 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:24,044 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:24,539 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:24,554 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:24,554 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:06:24,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:24 BoogieIcfgContainer [2023-11-19 08:06:24,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:24,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:24,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:24,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:24,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:23" (1/3) ... [2023-11-19 08:06:24,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f881328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:24, skipping insertion in model container [2023-11-19 08:06:24,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:23" (2/3) ... [2023-11-19 08:06:24,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f881328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:24, skipping insertion in model container [2023-11-19 08:06:24,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:24" (3/3) ... [2023-11-19 08:06:24,580 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2023-11-19 08:06:24,590 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:06:24,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:24,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-19 08:06:24,603 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:06:24,745 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 08:06:24,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 293 transitions, 607 flow [2023-11-19 08:06:24,959 INFO L124 PetriNetUnfolderBase]: 20/290 cut-off events. [2023-11-19 08:06:24,959 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 08:06:24,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 290 events. 20/290 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 765 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 208. Up to 2 conditions per place. [2023-11-19 08:06:24,977 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 293 transitions, 607 flow [2023-11-19 08:06:24,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 258 transitions, 531 flow [2023-11-19 08:06:24,998 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:25,014 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 258 transitions, 531 flow [2023-11-19 08:06:25,017 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 258 transitions, 531 flow [2023-11-19 08:06:25,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 531 flow [2023-11-19 08:06:25,108 INFO L124 PetriNetUnfolderBase]: 18/258 cut-off events. [2023-11-19 08:06:25,108 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:06:25,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 258 events. 18/258 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 755 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 208. Up to 2 conditions per place. [2023-11-19 08:06:25,136 INFO L119 LiptonReduction]: Number of co-enabled transitions 28350 [2023-11-19 08:06:42,706 INFO L134 LiptonReduction]: Checked pairs total: 27520 [2023-11-19 08:06:42,707 INFO L136 LiptonReduction]: Total number of compositions: 344 [2023-11-19 08:06:42,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:42,731 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;@3655a992, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:42,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-19 08:06:42,735 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:42,735 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-19 08:06:42,735 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:42,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:42,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:06:42,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 08:06:42,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:42,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1200173, now seen corresponding path program 1 times [2023-11-19 08:06:42,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:42,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071148430] [2023-11-19 08:06:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:42,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:43,036 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 08:06:43,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:43,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071148430] [2023-11-19 08:06:43,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071148430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:43,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:43,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:43,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601388919] [2023-11-19 08:06:43,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:43,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:43,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:43,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:43,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:43,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 637 [2023-11-19 08:06:43,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 79 flow. Second operand has 2 states, 2 states have (on average 279.5) internal successors, (559), 2 states have internal predecessors, (559), 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 08:06:43,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:43,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 637 [2023-11-19 08:06:43,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:43,649 INFO L124 PetriNetUnfolderBase]: 1125/1726 cut-off events. [2023-11-19 08:06:43,650 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-11-19 08:06:43,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 1726 events. 1125/1726 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 8130 event pairs, 1125 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 3104. Up to 1727 conditions per place. [2023-11-19 08:06:43,667 INFO L140 encePairwiseOnDemand]: 631/637 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-11-19 08:06:43,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 119 flow [2023-11-19 08:06:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:43,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:06:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 588 transitions. [2023-11-19 08:06:43,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2023-11-19 08:06:43,694 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 588 transitions. [2023-11-19 08:06:43,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 588 transitions. [2023-11-19 08:06:43,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:43,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 588 transitions. [2023-11-19 08:06:43,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 294.0) internal successors, (588), 2 states have internal predecessors, (588), 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 08:06:43,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 637.0) internal successors, (1911), 3 states have internal predecessors, (1911), 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 08:06:43,723 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 637.0) internal successors, (1911), 3 states have internal predecessors, (1911), 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 08:06:43,725 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 79 flow. Second operand 2 states and 588 transitions. [2023-11-19 08:06:43,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 119 flow [2023-11-19 08:06:43,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 08:06:43,738 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 58 flow [2023-11-19 08:06:43,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-11-19 08:06:43,748 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2023-11-19 08:06:43,748 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 58 flow [2023-11-19 08:06:43,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 279.5) internal successors, (559), 2 states have internal predecessors, (559), 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 08:06:43,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:43,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:06:43,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:06:43,752 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 08:06:43,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:43,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1200210, now seen corresponding path program 1 times [2023-11-19 08:06:43,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:43,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787660473] [2023-11-19 08:06:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:43,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:43,965 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 08:06:43,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:43,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787660473] [2023-11-19 08:06:43,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787660473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:43,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:43,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:43,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467681315] [2023-11-19 08:06:43,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:43,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:43,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:43,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:43,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:43,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 637 [2023-11-19 08:06:43,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 08:06:43,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:43,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 637 [2023-11-19 08:06:43,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:44,289 INFO L124 PetriNetUnfolderBase]: 793/1234 cut-off events. [2023-11-19 08:06:44,290 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-19 08:06:44,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2537 conditions, 1234 events. 793/1234 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 5444 event pairs, 793 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 2534. Up to 1234 conditions per place. [2023-11-19 08:06:44,300 INFO L140 encePairwiseOnDemand]: 634/637 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-19 08:06:44,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 102 flow [2023-11-19 08:06:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:44,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 854 transitions. [2023-11-19 08:06:44,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468864468864469 [2023-11-19 08:06:44,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 854 transitions. [2023-11-19 08:06:44,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 854 transitions. [2023-11-19 08:06:44,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:44,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 854 transitions. [2023-11-19 08:06:44,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 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 08:06:44,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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 08:06:44,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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 08:06:44,316 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 58 flow. Second operand 3 states and 854 transitions. [2023-11-19 08:06:44,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 102 flow [2023-11-19 08:06:44,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:44,318 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 56 flow [2023-11-19 08:06:44,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-11-19 08:06:44,319 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2023-11-19 08:06:44,319 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 56 flow [2023-11-19 08:06:44,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 08:06:44,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:44,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:06:44,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:06:44,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 08:06:44,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:44,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1200209, now seen corresponding path program 1 times [2023-11-19 08:06:44,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:44,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700194089] [2023-11-19 08:06:44,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:44,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:44,395 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 08:06:44,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:44,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700194089] [2023-11-19 08:06:44,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700194089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:44,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:44,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:44,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338643822] [2023-11-19 08:06:44,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:44,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:44,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:44,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:44,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:44,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 637 [2023-11-19 08:06:44,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 08:06:44,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:44,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 637 [2023-11-19 08:06:44,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:44,629 INFO L124 PetriNetUnfolderBase]: 527/836 cut-off events. [2023-11-19 08:06:44,629 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-19 08:06:44,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1722 conditions, 836 events. 527/836 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 3452 event pairs, 527 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 1718. Up to 836 conditions per place. [2023-11-19 08:06:44,637 INFO L140 encePairwiseOnDemand]: 634/637 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-11-19 08:06:44,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 96 flow [2023-11-19 08:06:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:44,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 852 transitions. [2023-11-19 08:06:44,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583987441130296 [2023-11-19 08:06:44,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 852 transitions. [2023-11-19 08:06:44,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 852 transitions. [2023-11-19 08:06:44,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:44,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 852 transitions. [2023-11-19 08:06:44,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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 08:06:44,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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 08:06:44,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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 08:06:44,656 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 56 flow. Second operand 3 states and 852 transitions. [2023-11-19 08:06:44,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 96 flow [2023-11-19 08:06:44,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:44,658 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 53 flow [2023-11-19 08:06:44,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-11-19 08:06:44,659 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-11-19 08:06:44,659 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 53 flow [2023-11-19 08:06:44,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 08:06:44,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:44,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:06:44,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:06:44,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 08:06:44,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:44,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1200212, now seen corresponding path program 1 times [2023-11-19 08:06:44,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:44,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046704141] [2023-11-19 08:06:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:44,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:44,745 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 08:06:44,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:44,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046704141] [2023-11-19 08:06:44,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046704141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:44,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:44,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:44,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221212783] [2023-11-19 08:06:44,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:44,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:44,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:44,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:44,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:44,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 637 [2023-11-19 08:06:44,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 08:06:44,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:44,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 637 [2023-11-19 08:06:44,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:44,911 INFO L124 PetriNetUnfolderBase]: 315/516 cut-off events. [2023-11-19 08:06:44,911 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:44,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 516 events. 315/516 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1929 event pairs, 315 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 1062. Up to 516 conditions per place. [2023-11-19 08:06:44,915 INFO L140 encePairwiseOnDemand]: 634/637 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-11-19 08:06:44,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 20 transitions, 89 flow [2023-11-19 08:06:44,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 850 transitions. [2023-11-19 08:06:44,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44479330193615907 [2023-11-19 08:06:44,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 850 transitions. [2023-11-19 08:06:44,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 850 transitions. [2023-11-19 08:06:44,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:44,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 850 transitions. [2023-11-19 08:06:44,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 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 08:06:44,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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 08:06:44,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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 08:06:44,932 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 53 flow. Second operand 3 states and 850 transitions. [2023-11-19 08:06:44,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 20 transitions, 89 flow [2023-11-19 08:06:44,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:44,934 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 50 flow [2023-11-19 08:06:44,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-11-19 08:06:44,935 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -12 predicate places. [2023-11-19 08:06:44,935 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 50 flow [2023-11-19 08:06:44,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 08:06:44,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:44,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:06:44,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:06:44,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 08:06:44,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:44,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1200176, now seen corresponding path program 1 times [2023-11-19 08:06:44,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:44,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870291485] [2023-11-19 08:06:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:44,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:44,988 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 08:06:44,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:44,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870291485] [2023-11-19 08:06:44,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870291485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:44,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:44,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:44,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355152359] [2023-11-19 08:06:44,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:44,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:44,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:44,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:44,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:44,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 637 [2023-11-19 08:06:45,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 08:06:45,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:45,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 637 [2023-11-19 08:06:45,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:45,102 INFO L124 PetriNetUnfolderBase]: 173/298 cut-off events. [2023-11-19 08:06:45,103 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:45,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 298 events. 173/298 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 988 event pairs, 173 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 618. Up to 298 conditions per place. [2023-11-19 08:06:45,105 INFO L140 encePairwiseOnDemand]: 634/637 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-11-19 08:06:45,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 82 flow [2023-11-19 08:06:45,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:45,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 848 transitions. [2023-11-19 08:06:45,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4437467294610152 [2023-11-19 08:06:45,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 848 transitions. [2023-11-19 08:06:45,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 848 transitions. [2023-11-19 08:06:45,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:45,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 848 transitions. [2023-11-19 08:06:45,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 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 08:06:45,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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 08:06:45,121 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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 08:06:45,122 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 50 flow. Second operand 3 states and 848 transitions. [2023-11-19 08:06:45,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 82 flow [2023-11-19 08:06:45,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:45,123 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 47 flow [2023-11-19 08:06:45,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2023-11-19 08:06:45,124 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -13 predicate places. [2023-11-19 08:06:45,124 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 47 flow [2023-11-19 08:06:45,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 08:06:45,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:45,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:06:45,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:06:45,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 08:06:45,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:45,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1153322995, now seen corresponding path program 1 times [2023-11-19 08:06:45,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:45,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445697666] [2023-11-19 08:06:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:45,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:45,167 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 08:06:45,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:45,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445697666] [2023-11-19 08:06:45,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445697666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:45,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:45,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:45,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756341553] [2023-11-19 08:06:45,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:45,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:45,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:45,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 637 [2023-11-19 08:06:45,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 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 08:06:45,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:45,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 637 [2023-11-19 08:06:45,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:45,270 INFO L124 PetriNetUnfolderBase]: 93/170 cut-off events. [2023-11-19 08:06:45,271 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:45,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 170 events. 93/170 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 463 event pairs, 93 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 359. Up to 170 conditions per place. [2023-11-19 08:06:45,272 INFO L140 encePairwiseOnDemand]: 634/637 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-11-19 08:06:45,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 75 flow [2023-11-19 08:06:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:45,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2023-11-19 08:06:45,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427001569858713 [2023-11-19 08:06:45,277 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2023-11-19 08:06:45,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2023-11-19 08:06:45,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:45,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2023-11-19 08:06:45,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 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 08:06:45,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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 08:06:45,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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 08:06:45,289 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 47 flow. Second operand 3 states and 846 transitions. [2023-11-19 08:06:45,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 75 flow [2023-11-19 08:06:45,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:45,290 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 44 flow [2023-11-19 08:06:45,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-11-19 08:06:45,291 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -14 predicate places. [2023-11-19 08:06:45,291 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 44 flow [2023-11-19 08:06:45,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 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 08:06:45,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:45,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:06:45,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:06:45,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 08:06:45,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:45,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1153322959, now seen corresponding path program 1 times [2023-11-19 08:06:45,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:45,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55665322] [2023-11-19 08:06:45,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:45,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:45,333 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 08:06:45,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:45,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55665322] [2023-11-19 08:06:45,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55665322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:45,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:45,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:45,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581754915] [2023-11-19 08:06:45,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:45,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:45,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:45,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:45,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:45,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 637 [2023-11-19 08:06:45,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 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 08:06:45,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:45,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 637 [2023-11-19 08:06:45,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:45,401 INFO L124 PetriNetUnfolderBase]: 37/78 cut-off events. [2023-11-19 08:06:45,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:45,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 78 events. 37/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 37 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 172. Up to 78 conditions per place. [2023-11-19 08:06:45,402 INFO L140 encePairwiseOnDemand]: 634/637 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-11-19 08:06:45,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 14 transitions, 68 flow [2023-11-19 08:06:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:45,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 844 transitions. [2023-11-19 08:06:45,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4416535845107274 [2023-11-19 08:06:45,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 844 transitions. [2023-11-19 08:06:45,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 844 transitions. [2023-11-19 08:06:45,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:45,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 844 transitions. [2023-11-19 08:06:45,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 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 08:06:45,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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 08:06:45,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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 08:06:45,418 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 44 flow. Second operand 3 states and 844 transitions. [2023-11-19 08:06:45,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 14 transitions, 68 flow [2023-11-19 08:06:45,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 14 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:45,419 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-11-19 08:06:45,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-11-19 08:06:45,420 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -15 predicate places. [2023-11-19 08:06:45,420 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-11-19 08:06:45,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 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 08:06:45,424 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2023-11-19 08:06:45,424 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2023-11-19 08:06:45,425 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2023-11-19 08:06:45,425 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2023-11-19 08:06:45,425 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2023-11-19 08:06:45,425 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2023-11-19 08:06:45,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2023-11-19 08:06:45,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2023-11-19 08:06:45,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2023-11-19 08:06:45,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2023-11-19 08:06:45,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2023-11-19 08:06:45,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2023-11-19 08:06:45,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2023-11-19 08:06:45,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2023-11-19 08:06:45,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2023-11-19 08:06:45,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2023-11-19 08:06:45,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2023-11-19 08:06:45,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2023-11-19 08:06:45,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2023-11-19 08:06:45,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2023-11-19 08:06:45,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2023-11-19 08:06:45,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2023-11-19 08:06:45,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2023-11-19 08:06:45,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2023-11-19 08:06:45,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2023-11-19 08:06:45,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2023-11-19 08:06:45,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2023-11-19 08:06:45,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2023-11-19 08:06:45,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2023-11-19 08:06:45,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2023-11-19 08:06:45,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2023-11-19 08:06:45,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2023-11-19 08:06:45,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2023-11-19 08:06:45,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2023-11-19 08:06:45,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2023-11-19 08:06:45,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2023-11-19 08:06:45,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2023-11-19 08:06:45,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2023-11-19 08:06:45,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2023-11-19 08:06:45,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:06:45,434 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:45,440 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 08:06:45,440 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:06:45,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:06:45 BasicIcfg [2023-11-19 08:06:45,444 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:06:45,445 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:06:45,445 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:06:45,445 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:06:45,446 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:24" (3/4) ... [2023-11-19 08:06:45,447 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:06:45,451 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 08:06:45,452 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 08:06:45,452 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-19 08:06:45,457 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-19 08:06:45,458 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 08:06:45,458 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 08:06:45,458 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:06:45,546 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:06:45,546 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:06:45,547 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:06:45,547 INFO L158 Benchmark]: Toolchain (without parser) took 22107.63ms. Allocated memory was 157.3MB in the beginning and 226.5MB in the end (delta: 69.2MB). Free memory was 111.7MB in the beginning and 109.3MB in the end (delta: 2.4MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2023-11-19 08:06:45,548 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:06:45,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.37ms. Allocated memory is still 157.3MB. Free memory was 111.5MB in the beginning and 100.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 08:06:45,549 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.49ms. Allocated memory is still 157.3MB. Free memory was 100.0MB in the beginning and 97.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:06:45,549 INFO L158 Benchmark]: Boogie Preprocessor took 34.30ms. Allocated memory is still 157.3MB. Free memory was 97.5MB in the beginning and 95.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:06:45,549 INFO L158 Benchmark]: RCFGBuilder took 722.84ms. Allocated memory is still 157.3MB. Free memory was 95.9MB in the beginning and 112.7MB in the end (delta: -16.9MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2023-11-19 08:06:45,550 INFO L158 Benchmark]: TraceAbstraction took 20875.28ms. Allocated memory was 157.3MB in the beginning and 226.5MB in the end (delta: 69.2MB). Free memory was 112.7MB in the beginning and 114.5MB in the end (delta: -1.8MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2023-11-19 08:06:45,550 INFO L158 Benchmark]: Witness Printer took 101.99ms. Allocated memory is still 226.5MB. Free memory was 114.5MB in the beginning and 109.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 08:06:45,553 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.37ms. Allocated memory is still 157.3MB. Free memory was 111.5MB in the beginning and 100.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.49ms. Allocated memory is still 157.3MB. Free memory was 100.0MB in the beginning and 97.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.30ms. Allocated memory is still 157.3MB. Free memory was 97.5MB in the beginning and 95.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 722.84ms. Allocated memory is still 157.3MB. Free memory was 95.9MB in the beginning and 112.7MB in the end (delta: -16.9MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * TraceAbstraction took 20875.28ms. Allocated memory was 157.3MB in the beginning and 226.5MB in the end (delta: 69.2MB). Free memory was 112.7MB in the beginning and 114.5MB in the end (delta: -1.8MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. * Witness Printer took 101.99ms. Allocated memory is still 226.5MB. Free memory was 114.5MB in the beginning and 109.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.7s, 250 PlacesBefore, 42 PlacesAfterwards, 258 TransitionsBefore, 32 TransitionsAfterwards, 28350 CoEnabledTransitionPairs, 7 FixpointIterations, 46 TrivialSequentialCompositions, 218 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 62 ConcurrentYvCompositions, 18 ChoiceCompositions, 344 TotalNumberOfCompositions, 27520 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27520, independent: 27520, independent conditional: 0, independent unconditional: 27520, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 17298, independent: 17298, independent conditional: 0, independent unconditional: 17298, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 27520, independent: 10222, independent conditional: 0, independent unconditional: 10222, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 17298, unknown conditional: 0, unknown unconditional: 17298] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 451 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 175 IncrementalHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 9 mSDtfsCounter, 175 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 08:06:45,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acfbb67-7207-4335-85b4-ce14e8feaa42/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE