./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:47:50,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:47:50,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:47:50,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:47:50,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:47:50,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:47:50,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:47:50,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:47:50,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:47:50,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:47:50,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:47:50,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:47:50,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:47:50,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:47:50,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:47:50,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:47:50,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:47:50,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:47:50,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:47:50,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:47:50,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:47:50,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:47:50,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:47:50,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:47:50,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:47:50,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:47:50,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:47:50,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:47:50,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:47:50,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:47:50,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:47:50,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:47:50,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:47:50,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:47:50,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:47:50,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:47:50,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:47:50,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:47:50,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:47:50,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:47:50,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:47:50,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:47:50,944 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:47:50,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:47:50,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:47:50,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:47:50,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:47:50,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:47:50,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:47:50,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:47:50,950 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:47:50,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:47:50,951 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:47:50,952 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:47:50,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:47:50,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:47:50,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:47:50,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:47:50,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:47:50,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:47:50,954 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:47:50,954 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:47:50,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:47:50,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:47:50,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:47:50,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:47:50,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:47:50,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:47:50,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:47:50,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:47:50,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:47:50,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:47:50,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:47:50,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:47:50,960 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:47:50,960 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:47:50,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:47:50,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f [2022-11-16 11:47:51,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:47:51,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:47:51,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:47:51,289 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:47:51,290 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:47:51,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-16 11:47:51,373 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/data/4ec8f5ba2/82b5de7ffcad4cabab517f1debd57836/FLAG0baa09ec9 [2022-11-16 11:47:51,861 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:47:51,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-16 11:47:51,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/data/4ec8f5ba2/82b5de7ffcad4cabab517f1debd57836/FLAG0baa09ec9 [2022-11-16 11:47:52,233 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/data/4ec8f5ba2/82b5de7ffcad4cabab517f1debd57836 [2022-11-16 11:47:52,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:47:52,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:47:52,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:47:52,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:47:52,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:47:52,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f46ace8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52, skipping insertion in model container [2022-11-16 11:47:52,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:47:52,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:47:52,489 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-16 11:47:52,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:47:52,510 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:47:52,538 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-16 11:47:52,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:47:52,561 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:47:52,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52 WrapperNode [2022-11-16 11:47:52,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:47:52,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:47:52,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:47:52,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:47:52,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,619 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 303 [2022-11-16 11:47:52,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:47:52,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:47:52,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:47:52,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:47:52,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,656 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:47:52,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:47:52,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:47:52,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:47:52,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:47:52,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:52,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:47:52,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:47:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:47:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:47:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:47:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:47:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:47:52,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:47:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:47:52,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:47:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:47:52,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:47:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:47:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:47:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:47:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:47:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:47:52,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:47:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:47:52,786 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:47:52,925 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:47:52,927 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:47:53,632 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:47:54,518 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:47:54,518 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:47:54,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:47:54 BoogieIcfgContainer [2022-11-16 11:47:54,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:47:54,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:47:54,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:47:54,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:47:54,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:47:52" (1/3) ... [2022-11-16 11:47:54,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397361c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:47:54, skipping insertion in model container [2022-11-16 11:47:54,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52" (2/3) ... [2022-11-16 11:47:54,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397361c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:47:54, skipping insertion in model container [2022-11-16 11:47:54,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:47:54" (3/3) ... [2022-11-16 11:47:54,536 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2022-11-16 11:47:54,551 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:47:54,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:47:54,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-16 11:47:54,564 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:47:54,952 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:47:54,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 321 transitions, 666 flow [2022-11-16 11:47:55,152 INFO L130 PetriNetUnfolder]: 23/318 cut-off events. [2022-11-16 11:47:55,152 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:47:55,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 23/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 790 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2022-11-16 11:47:55,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 321 transitions, 666 flow [2022-11-16 11:47:55,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 294 transitions, 606 flow [2022-11-16 11:47:55,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:47:55,190 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e728d13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:47:55,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-11-16 11:47:55,203 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-16 11:47:55,203 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:47:55,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:55,204 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:55,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-16 11:47:55,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:55,210 INFO L85 PathProgramCache]: Analyzing trace with hash 519815807, now seen corresponding path program 1 times [2022-11-16 11:47:55,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:55,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472872715] [2022-11-16 11:47:55,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:55,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:55,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:55,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472872715] [2022-11-16 11:47:55,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472872715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:55,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:55,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:47:55,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135879612] [2022-11-16 11:47:55,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:55,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:47:55,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:55,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:47:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:47:55,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-16 11:47:55,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 294 transitions, 606 flow. Second operand has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:55,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:55,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-16 11:47:55,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:56,363 INFO L130 PetriNetUnfolder]: 77/627 cut-off events. [2022-11-16 11:47:56,364 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-16 11:47:56,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 627 events. 77/627 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3124 event pairs, 28 based on Foata normal form. 90/547 useless extension candidates. Maximal degree in co-relation 451. Up to 69 conditions per place. [2022-11-16 11:47:56,384 INFO L137 encePairwiseOnDemand]: 296/321 looper letters, 42 selfloop transitions, 4 changer transitions 3/296 dead transitions. [2022-11-16 11:47:56,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 296 transitions, 720 flow [2022-11-16 11:47:56,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:47:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:47:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1459 transitions. [2022-11-16 11:47:56,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9090342679127725 [2022-11-16 11:47:56,413 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1459 transitions. [2022-11-16 11:47:56,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1459 transitions. [2022-11-16 11:47:56,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:56,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1459 transitions. [2022-11-16 11:47:56,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.8) internal successors, (1459), 5 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:56,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:56,443 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:56,445 INFO L175 Difference]: Start difference. First operand has 283 places, 294 transitions, 606 flow. Second operand 5 states and 1459 transitions. [2022-11-16 11:47:56,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 296 transitions, 720 flow [2022-11-16 11:47:56,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 296 transitions, 696 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:47:56,482 INFO L231 Difference]: Finished difference. Result has 276 places, 275 transitions, 580 flow [2022-11-16 11:47:56,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=580, PETRI_PLACES=276, PETRI_TRANSITIONS=275} [2022-11-16 11:47:56,490 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, -7 predicate places. [2022-11-16 11:47:56,491 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 275 transitions, 580 flow [2022-11-16 11:47:56,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:56,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:56,494 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:56,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:47:56,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-16 11:47:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:56,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1358057142, now seen corresponding path program 1 times [2022-11-16 11:47:56,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:56,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553448631] [2022-11-16 11:47:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:56,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:56,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:56,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553448631] [2022-11-16 11:47:56,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553448631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:56,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199744509] [2022-11-16 11:47:56,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:56,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:56,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:56,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:56,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:47:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:57,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:47:57,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:57,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:57,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199744509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:47:57,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:47:57,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:47:57,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773764617] [2022-11-16 11:47:57,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:57,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:47:57,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:47:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:47:57,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-16 11:47:57,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 275 transitions, 580 flow. Second operand has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:57,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:57,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-16 11:47:57,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:47:58,781 INFO L130 PetriNetUnfolder]: 191/1483 cut-off events. [2022-11-16 11:47:58,781 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2022-11-16 11:47:58,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 1483 events. 191/1483 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10266 event pairs, 70 based on Foata normal form. 3/1076 useless extension candidates. Maximal degree in co-relation 1436. Up to 64 conditions per place. [2022-11-16 11:47:58,812 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 93 selfloop transitions, 18 changer transitions 0/358 dead transitions. [2022-11-16 11:47:58,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 358 transitions, 1014 flow [2022-11-16 11:47:58,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:47:58,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:47:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5064 transitions. [2022-11-16 11:47:58,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8764278296988577 [2022-11-16 11:47:58,823 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5064 transitions. [2022-11-16 11:47:58,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5064 transitions. [2022-11-16 11:47:58,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:47:58,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5064 transitions. [2022-11-16 11:47:58,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 281.3333333333333) internal successors, (5064), 18 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:58,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:58,854 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:58,854 INFO L175 Difference]: Start difference. First operand has 276 places, 275 transitions, 580 flow. Second operand 18 states and 5064 transitions. [2022-11-16 11:47:58,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 358 transitions, 1014 flow [2022-11-16 11:47:58,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 358 transitions, 1012 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:47:58,862 INFO L231 Difference]: Finished difference. Result has 293 places, 287 transitions, 684 flow [2022-11-16 11:47:58,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=684, PETRI_PLACES=293, PETRI_TRANSITIONS=287} [2022-11-16 11:47:58,864 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 10 predicate places. [2022-11-16 11:47:58,864 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 287 transitions, 684 flow [2022-11-16 11:47:58,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:58,866 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:58,866 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:58,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:59,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 11:47:59,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-16 11:47:59,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:59,073 INFO L85 PathProgramCache]: Analyzing trace with hash 849902484, now seen corresponding path program 1 times [2022-11-16 11:47:59,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:59,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002674559] [2022-11-16 11:47:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:59,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:59,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:59,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002674559] [2022-11-16 11:47:59,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002674559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:59,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455773461] [2022-11-16 11:47:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:59,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:59,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:59,202 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:59,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:47:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:59,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:47:59,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:59,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:47:59,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455773461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:59,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:47:59,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:47:59,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501428083] [2022-11-16 11:47:59,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:59,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:47:59,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:59,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:47:59,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:47:59,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-16 11:47:59,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 287 transitions, 684 flow. Second operand has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:59,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:59,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-16 11:47:59,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:00,518 INFO L130 PetriNetUnfolder]: 191/1479 cut-off events. [2022-11-16 11:48:00,519 INFO L131 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2022-11-16 11:48:00,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1479 events. 191/1479 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10111 event pairs, 70 based on Foata normal form. 4/1073 useless extension candidates. Maximal degree in co-relation 1481. Up to 240 conditions per place. [2022-11-16 11:48:00,561 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 43 selfloop transitions, 11 changer transitions 0/301 dead transitions. [2022-11-16 11:48:00,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 301 transitions, 809 flow [2022-11-16 11:48:00,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:48:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:48:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1971 transitions. [2022-11-16 11:48:00,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.87716955941255 [2022-11-16 11:48:00,567 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1971 transitions. [2022-11-16 11:48:00,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1971 transitions. [2022-11-16 11:48:00,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:00,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1971 transitions. [2022-11-16 11:48:00,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.57142857142856) internal successors, (1971), 7 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:00,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:00,584 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:00,584 INFO L175 Difference]: Start difference. First operand has 293 places, 287 transitions, 684 flow. Second operand 7 states and 1971 transitions. [2022-11-16 11:48:00,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 301 transitions, 809 flow [2022-11-16 11:48:00,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 301 transitions, 777 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:48:00,595 INFO L231 Difference]: Finished difference. Result has 289 places, 283 transitions, 647 flow [2022-11-16 11:48:00,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=647, PETRI_PLACES=289, PETRI_TRANSITIONS=283} [2022-11-16 11:48:00,599 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 6 predicate places. [2022-11-16 11:48:00,599 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 283 transitions, 647 flow [2022-11-16 11:48:00,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:00,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:00,600 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:00,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:00,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:00,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-16 11:48:00,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:00,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1121272946, now seen corresponding path program 1 times [2022-11-16 11:48:00,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:00,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029796983] [2022-11-16 11:48:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:00,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:01,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:01,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029796983] [2022-11-16 11:48:01,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029796983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:01,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:48:01,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:48:01,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681714911] [2022-11-16 11:48:01,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:01,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:48:01,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:01,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:48:01,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:48:01,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 321 [2022-11-16 11:48:01,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 283 transitions, 647 flow. Second operand has 7 states, 7 states have (on average 265.14285714285717) internal successors, (1856), 7 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:01,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:01,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 321 [2022-11-16 11:48:01,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:02,854 INFO L130 PetriNetUnfolder]: 609/3471 cut-off events. [2022-11-16 11:48:02,854 INFO L131 PetriNetUnfolder]: For 149/161 co-relation queries the response was YES. [2022-11-16 11:48:02,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 3471 events. 609/3471 cut-off events. For 149/161 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 29055 event pairs, 409 based on Foata normal form. 0/2370 useless extension candidates. Maximal degree in co-relation 4096. Up to 949 conditions per place. [2022-11-16 11:48:03,021 INFO L137 encePairwiseOnDemand]: 312/321 looper letters, 69 selfloop transitions, 8 changer transitions 0/315 dead transitions. [2022-11-16 11:48:03,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 315 transitions, 873 flow [2022-11-16 11:48:03,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:48:03,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:48:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2176 transitions. [2022-11-16 11:48:03,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8473520249221184 [2022-11-16 11:48:03,029 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2176 transitions. [2022-11-16 11:48:03,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2176 transitions. [2022-11-16 11:48:03,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:03,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2176 transitions. [2022-11-16 11:48:03,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:03,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:03,046 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:03,046 INFO L175 Difference]: Start difference. First operand has 289 places, 283 transitions, 647 flow. Second operand 8 states and 2176 transitions. [2022-11-16 11:48:03,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 315 transitions, 873 flow [2022-11-16 11:48:03,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 315 transitions, 859 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:48:03,060 INFO L231 Difference]: Finished difference. Result has 294 places, 285 transitions, 665 flow [2022-11-16 11:48:03,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=665, PETRI_PLACES=294, PETRI_TRANSITIONS=285} [2022-11-16 11:48:03,063 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 11 predicate places. [2022-11-16 11:48:03,063 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 285 transitions, 665 flow [2022-11-16 11:48:03,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 265.14285714285717) internal successors, (1856), 7 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:03,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:03,065 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:03,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:48:03,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-16 11:48:03,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:03,068 INFO L85 PathProgramCache]: Analyzing trace with hash 456301925, now seen corresponding path program 1 times [2022-11-16 11:48:03,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:03,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901361494] [2022-11-16 11:48:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:03,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:03,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:03,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901361494] [2022-11-16 11:48:03,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901361494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:03,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:48:03,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:48:03,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848794363] [2022-11-16 11:48:03,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:03,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:48:03,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:48:03,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:48:03,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 321 [2022-11-16 11:48:03,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 285 transitions, 665 flow. Second operand has 10 states, 10 states have (on average 246.8) internal successors, (2468), 10 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:03,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:03,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 321 [2022-11-16 11:48:03,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:06,034 INFO L130 PetriNetUnfolder]: 1946/6302 cut-off events. [2022-11-16 11:48:06,035 INFO L131 PetriNetUnfolder]: For 615/627 co-relation queries the response was YES. [2022-11-16 11:48:06,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9348 conditions, 6302 events. 1946/6302 cut-off events. For 615/627 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 53986 event pairs, 884 based on Foata normal form. 12/4194 useless extension candidates. Maximal degree in co-relation 8685. Up to 2287 conditions per place. [2022-11-16 11:48:06,182 INFO L137 encePairwiseOnDemand]: 308/321 looper letters, 73 selfloop transitions, 12 changer transitions 0/313 dead transitions. [2022-11-16 11:48:06,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 313 transitions, 903 flow [2022-11-16 11:48:06,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:48:06,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:48:06,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3008 transitions. [2022-11-16 11:48:06,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7808930425752856 [2022-11-16 11:48:06,195 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3008 transitions. [2022-11-16 11:48:06,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3008 transitions. [2022-11-16 11:48:06,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:06,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3008 transitions. [2022-11-16 11:48:06,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 250.66666666666666) internal successors, (3008), 12 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:06,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 321.0) internal successors, (4173), 13 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:06,229 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 321.0) internal successors, (4173), 13 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:06,236 INFO L175 Difference]: Start difference. First operand has 294 places, 285 transitions, 665 flow. Second operand 12 states and 3008 transitions. [2022-11-16 11:48:06,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 313 transitions, 903 flow [2022-11-16 11:48:06,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 313 transitions, 893 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:48:06,248 INFO L231 Difference]: Finished difference. Result has 307 places, 290 transitions, 714 flow [2022-11-16 11:48:06,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=714, PETRI_PLACES=307, PETRI_TRANSITIONS=290} [2022-11-16 11:48:06,251 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 24 predicate places. [2022-11-16 11:48:06,253 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 290 transitions, 714 flow [2022-11-16 11:48:06,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 246.8) internal successors, (2468), 10 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:06,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:06,257 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:06,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:48:06,257 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-16 11:48:06,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:06,258 INFO L85 PathProgramCache]: Analyzing trace with hash 601016725, now seen corresponding path program 1 times [2022-11-16 11:48:06,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:06,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752099565] [2022-11-16 11:48:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:06,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:06,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:06,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752099565] [2022-11-16 11:48:06,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752099565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:06,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:48:06,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:48:06,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056183508] [2022-11-16 11:48:06,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:06,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:48:06,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:06,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:48:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:48:06,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 321 [2022-11-16 11:48:06,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 290 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 243.7) internal successors, (2437), 10 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:06,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:06,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 321 [2022-11-16 11:48:06,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:10,059 INFO L130 PetriNetUnfolder]: 3451/8987 cut-off events. [2022-11-16 11:48:10,060 INFO L131 PetriNetUnfolder]: For 1415/1427 co-relation queries the response was YES. [2022-11-16 11:48:10,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15360 conditions, 8987 events. 3451/8987 cut-off events. For 1415/1427 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 76805 event pairs, 2366 based on Foata normal form. 12/6114 useless extension candidates. Maximal degree in co-relation 14956. Up to 4739 conditions per place. [2022-11-16 11:48:10,234 INFO L137 encePairwiseOnDemand]: 309/321 looper letters, 71 selfloop transitions, 11 changer transitions 0/307 dead transitions. [2022-11-16 11:48:10,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 307 transitions, 926 flow [2022-11-16 11:48:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:48:10,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:48:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2487 transitions. [2022-11-16 11:48:10,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7747663551401869 [2022-11-16 11:48:10,246 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2487 transitions. [2022-11-16 11:48:10,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2487 transitions. [2022-11-16 11:48:10,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:10,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2487 transitions. [2022-11-16 11:48:10,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 248.7) internal successors, (2487), 10 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:10,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 321.0) internal successors, (3531), 11 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:10,269 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 321.0) internal successors, (3531), 11 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:10,269 INFO L175 Difference]: Start difference. First operand has 307 places, 290 transitions, 714 flow. Second operand 10 states and 2487 transitions. [2022-11-16 11:48:10,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 307 transitions, 926 flow [2022-11-16 11:48:10,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 307 transitions, 916 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:48:10,285 INFO L231 Difference]: Finished difference. Result has 314 places, 291 transitions, 735 flow [2022-11-16 11:48:10,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=735, PETRI_PLACES=314, PETRI_TRANSITIONS=291} [2022-11-16 11:48:10,290 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 31 predicate places. [2022-11-16 11:48:10,290 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 291 transitions, 735 flow [2022-11-16 11:48:10,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 243.7) internal successors, (2437), 10 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:10,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:10,292 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:10,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:48:10,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-16 11:48:10,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:10,293 INFO L85 PathProgramCache]: Analyzing trace with hash -235587331, now seen corresponding path program 1 times [2022-11-16 11:48:10,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:10,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656971907] [2022-11-16 11:48:10,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:10,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:11,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:11,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656971907] [2022-11-16 11:48:11,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656971907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:11,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764098584] [2022-11-16 11:48:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:11,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:11,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:11,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:11,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef71b2fe-e005-4ba8-a21d-373f58b780fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:48:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:11,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 11:48:11,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:11,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:48:12,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:48:12,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:48:12,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 11:48:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:12,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:12,385 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_121 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_121) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-16 11:48:12,529 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_121 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_121) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456))) is different from false [2022-11-16 11:48:12,538 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_121 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_121) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-11-16 11:48:12,586 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:48:12,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-16 11:48:12,599 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:48:12,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-11-16 11:48:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-16 11:48:12,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764098584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:12,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:12,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 40 [2022-11-16 11:48:12,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822774338] [2022-11-16 11:48:12,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:12,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-16 11:48:12,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:12,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-16 11:48:12,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1279, Unknown=6, NotChecked=222, Total=1640 [2022-11-16 11:48:12,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 321 [2022-11-16 11:48:12,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 291 transitions, 735 flow. Second operand has 41 states, 41 states have (on average 226.0731707317073) internal successors, (9269), 41 states have internal predecessors, (9269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:12,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:12,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 321 [2022-11-16 11:48:12,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand