./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:36:51,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:36:51,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:36:51,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:36:51,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:36:51,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:36:51,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:36:51,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:36:51,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:36:51,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:36:51,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:36:51,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:36:51,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:36:51,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:36:51,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:36:51,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:36:51,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:36:51,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:36:51,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:36:51,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:36:51,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:36:51,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:36:51,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:36:51,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:36:51,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:36:51,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:36:51,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:36:51,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:36:51,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:36:51,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:36:51,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:36:51,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:36:51,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:36:51,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:36:51,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:36:51,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:36:51,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:36:51,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:36:51,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:36:51,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:36:51,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:36:51,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:36:51,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:36:51,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:36:51,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:36:51,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:36:51,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:36:51,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:36:51,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:36:51,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:36:51,997 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:36:51,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:36:51,998 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:36:51,999 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:36:51,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:36:51,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:36:51,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:36:52,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:36:52,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:36:52,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:36:52,001 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:36:52,002 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:36:52,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:36:52,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:36:52,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:36:52,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:36:52,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:36:52,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:36:52,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:36:52,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:36:52,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:36:52,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:36:52,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:36:52,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:36:52,005 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:36:52,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:36:52,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:36:52,006 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_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 [2022-11-20 11:36:52,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:36:52,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:36:52,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:36:52,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:36:52,388 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:36:52,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-20 11:36:56,222 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:36:56,496 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:36:56,496 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-20 11:36:56,506 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/data/4663cda29/2afe7834b57a44f890671391b9966c16/FLAG97deb3dfd [2022-11-20 11:36:56,525 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/data/4663cda29/2afe7834b57a44f890671391b9966c16 [2022-11-20 11:36:56,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:36:56,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:36:56,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:36:56,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:36:56,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:36:56,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:56,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c4f2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56, skipping insertion in model container [2022-11-20 11:36:56,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:56,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:36:56,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:36:56,816 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-20 11:36:56,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:36:56,854 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:36:56,887 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-20 11:36:56,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:36:56,909 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:36:56,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56 WrapperNode [2022-11-20 11:36:56,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:36:56,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:36:56,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:36:56,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:36:56,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:56,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:57,001 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 395 [2022-11-20 11:36:57,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:36:57,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:36:57,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:36:57,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:36:57,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:57,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:57,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:57,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:57,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:57,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:57,045 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:57,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:57,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:36:57,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:36:57,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:36:57,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:36:57,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56" (1/1) ... [2022-11-20 11:36:57,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:36:57,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:57,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:36:57,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:36:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:36:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:36:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:36:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:36:57,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:36:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:36:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:36:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:36:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:36:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:36:57,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:36:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:36:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:36:57,167 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:36:57,379 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:36:57,381 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:36:58,434 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:36:58,455 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:36:58,455 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:36:58,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:58 BoogieIcfgContainer [2022-11-20 11:36:58,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:36:58,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:36:58,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:36:58,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:36:58,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:36:56" (1/3) ... [2022-11-20 11:36:58,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0758c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:58, skipping insertion in model container [2022-11-20 11:36:58,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:56" (2/3) ... [2022-11-20 11:36:58,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0758c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:58, skipping insertion in model container [2022-11-20 11:36:58,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:58" (3/3) ... [2022-11-20 11:36:58,471 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-11-20 11:36:58,487 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:36:58,503 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:36:58,503 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2022-11-20 11:36:58,503 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:36:58,798 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:36:58,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 583 transitions, 1182 flow [2022-11-20 11:36:59,400 INFO L130 PetriNetUnfolder]: 44/581 cut-off events. [2022-11-20 11:36:59,400 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:36:59,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 581 events. 44/581 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1853 event pairs, 0 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2022-11-20 11:36:59,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 583 transitions, 1182 flow [2022-11-20 11:36:59,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 526 places, 562 transitions, 1133 flow [2022-11-20 11:36:59,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:36:59,484 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;@285d35d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:36:59,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2022-11-20 11:36:59,499 INFO L130 PetriNetUnfolder]: 3/87 cut-off events. [2022-11-20 11:36:59,499 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:36:59,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:36:59,501 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] [2022-11-20 11:36:59,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-20 11:36:59,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:59,512 INFO L85 PathProgramCache]: Analyzing trace with hash 25266818, now seen corresponding path program 1 times [2022-11-20 11:36:59,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:59,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30295657] [2022-11-20 11:36:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:59,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:00,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:00,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30295657] [2022-11-20 11:37:00,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30295657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:00,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:00,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:37:00,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147384404] [2022-11-20 11:37:00,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:00,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:37:00,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:00,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:37:00,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:37:00,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-11-20 11:37:00,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 562 transitions, 1133 flow. Second operand has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:00,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:00,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-11-20 11:37:00,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:00,869 INFO L130 PetriNetUnfolder]: 41/1004 cut-off events. [2022-11-20 11:37:00,870 INFO L131 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2022-11-20 11:37:00,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 1004 events. 41/1004 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5137 event pairs, 0 based on Foata normal form. 52/872 useless extension candidates. Maximal degree in co-relation 590. Up to 16 conditions per place. [2022-11-20 11:37:00,914 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 22 selfloop transitions, 4 changer transitions 3/551 dead transitions. [2022-11-20 11:37:00,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 551 transitions, 1172 flow [2022-11-20 11:37:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:37:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:37:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2785 transitions. [2022-11-20 11:37:00,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9554030874785592 [2022-11-20 11:37:00,951 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2785 transitions. [2022-11-20 11:37:00,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2785 transitions. [2022-11-20 11:37:00,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:00,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2785 transitions. [2022-11-20 11:37:00,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 557.0) internal successors, (2785), 5 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:01,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:01,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:01,055 INFO L175 Difference]: Start difference. First operand has 526 places, 562 transitions, 1133 flow. Second operand 5 states and 2785 transitions. [2022-11-20 11:37:01,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 551 transitions, 1172 flow [2022-11-20 11:37:01,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 551 transitions, 1162 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:37:01,090 INFO L231 Difference]: Finished difference. Result has 530 places, 540 transitions, 1108 flow [2022-11-20 11:37:01,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1108, PETRI_PLACES=530, PETRI_TRANSITIONS=540} [2022-11-20 11:37:01,100 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 4 predicate places. [2022-11-20 11:37:01,101 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 540 transitions, 1108 flow [2022-11-20 11:37:01,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:01,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:01,104 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:01,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:37:01,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-20 11:37:01,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:01,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2120409065, now seen corresponding path program 1 times [2022-11-20 11:37:01,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:01,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608197713] [2022-11-20 11:37:01,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:01,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:01,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:01,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608197713] [2022-11-20 11:37:01,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608197713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:01,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373445509] [2022-11-20 11:37:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:01,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:01,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:01,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:01,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:37:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:01,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:37:01,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:01,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:01,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:01,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373445509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:01,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:37:01,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:37:01,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554654734] [2022-11-20 11:37:01,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:01,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:37:01,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:01,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:37:01,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:37:01,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-11-20 11:37:01,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 540 transitions, 1108 flow. Second operand has 12 states, 12 states have (on average 545.6666666666666) internal successors, (6548), 12 states have internal predecessors, (6548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:01,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:01,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-11-20 11:37:01,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:03,443 INFO L130 PetriNetUnfolder]: 101/2391 cut-off events. [2022-11-20 11:37:03,443 INFO L131 PetriNetUnfolder]: For 16/21 co-relation queries the response was YES. [2022-11-20 11:37:03,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 2391 events. 101/2391 cut-off events. For 16/21 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 17697 event pairs, 0 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 1932. Up to 11 conditions per place. [2022-11-20 11:37:03,530 INFO L137 encePairwiseOnDemand]: 576/583 looper letters, 43 selfloop transitions, 18 changer transitions 0/583 dead transitions. [2022-11-20 11:37:03,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 583 transitions, 1354 flow [2022-11-20 11:37:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:37:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:37:03,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 9838 transitions. [2022-11-20 11:37:03,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9374880884314847 [2022-11-20 11:37:03,556 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 9838 transitions. [2022-11-20 11:37:03,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 9838 transitions. [2022-11-20 11:37:03,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:03,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 9838 transitions. [2022-11-20 11:37:03,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 546.5555555555555) internal successors, (9838), 18 states have internal predecessors, (9838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:03,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 583.0) internal successors, (11077), 19 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:03,623 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 583.0) internal successors, (11077), 19 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:03,623 INFO L175 Difference]: Start difference. First operand has 530 places, 540 transitions, 1108 flow. Second operand 18 states and 9838 transitions. [2022-11-20 11:37:03,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 583 transitions, 1354 flow [2022-11-20 11:37:03,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 583 transitions, 1352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:37:03,638 INFO L231 Difference]: Finished difference. Result has 547 places, 552 transitions, 1212 flow [2022-11-20 11:37:03,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1212, PETRI_PLACES=547, PETRI_TRANSITIONS=552} [2022-11-20 11:37:03,640 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 21 predicate places. [2022-11-20 11:37:03,640 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 552 transitions, 1212 flow [2022-11-20 11:37:03,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 545.6666666666666) internal successors, (6548), 12 states have internal predecessors, (6548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:03,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:03,646 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:03,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:03,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:03,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-20 11:37:03,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:03,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1308172820, now seen corresponding path program 1 times [2022-11-20 11:37:03,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:03,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744493296] [2022-11-20 11:37:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:03,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:04,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:04,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744493296] [2022-11-20 11:37:04,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744493296] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:04,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864682736] [2022-11-20 11:37:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:04,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:04,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:04,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:04,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:37:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:04,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:37:04,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:04,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:04,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864682736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:04,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:37:04,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:37:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777914796] [2022-11-20 11:37:04,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:04,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:37:04,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:04,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:37:04,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:37:04,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-11-20 11:37:04,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 552 transitions, 1212 flow. Second operand has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:04,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:04,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-11-20 11:37:04,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:05,411 INFO L130 PetriNetUnfolder]: 101/2387 cut-off events. [2022-11-20 11:37:05,411 INFO L131 PetriNetUnfolder]: For 52/57 co-relation queries the response was YES. [2022-11-20 11:37:05,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 2387 events. 101/2387 cut-off events. For 52/57 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 17688 event pairs, 0 based on Foata normal form. 4/1946 useless extension candidates. Maximal degree in co-relation 2000. Up to 28 conditions per place. [2022-11-20 11:37:05,608 INFO L137 encePairwiseOnDemand]: 578/583 looper letters, 23 selfloop transitions, 11 changer transitions 0/556 dead transitions. [2022-11-20 11:37:05,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 556 transitions, 1275 flow [2022-11-20 11:37:05,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:37:05,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:37:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3827 transitions. [2022-11-20 11:37:05,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9377603528546925 [2022-11-20 11:37:05,623 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3827 transitions. [2022-11-20 11:37:05,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3827 transitions. [2022-11-20 11:37:05,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:05,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3827 transitions. [2022-11-20 11:37:05,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 546.7142857142857) internal successors, (3827), 7 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:05,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:05,675 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:05,675 INFO L175 Difference]: Start difference. First operand has 547 places, 552 transitions, 1212 flow. Second operand 7 states and 3827 transitions. [2022-11-20 11:37:05,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 556 transitions, 1275 flow [2022-11-20 11:37:05,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 556 transitions, 1243 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 11:37:05,702 INFO L231 Difference]: Finished difference. Result has 543 places, 548 transitions, 1175 flow [2022-11-20 11:37:05,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1175, PETRI_PLACES=543, PETRI_TRANSITIONS=548} [2022-11-20 11:37:05,706 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 17 predicate places. [2022-11-20 11:37:05,707 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 548 transitions, 1175 flow [2022-11-20 11:37:05,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:05,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:05,709 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:05,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:05,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efc0df6e-4971-43ae-b5aa-503312126cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:05,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-20 11:37:05,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:05,917 INFO L85 PathProgramCache]: Analyzing trace with hash 955751352, now seen corresponding path program 1 times [2022-11-20 11:37:05,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:05,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682791019] [2022-11-20 11:37:05,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:05,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:06,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:06,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682791019] [2022-11-20 11:37:06,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682791019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:06,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:06,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:37:06,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132413945] [2022-11-20 11:37:06,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:06,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:37:06,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:06,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:37:06,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:37:06,145 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 583 [2022-11-20 11:37:06,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 548 transitions, 1175 flow. Second operand has 6 states, 6 states have (on average 469.0) internal successors, (2814), 6 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:06,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:06,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 583 [2022-11-20 11:37:06,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:10,779 INFO L130 PetriNetUnfolder]: 1216/8132 cut-off events. [2022-11-20 11:37:10,780 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-20 11:37:10,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13156 conditions, 8132 events. 1216/8132 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 81154 event pairs, 140 based on Foata normal form. 0/6807 useless extension candidates. Maximal degree in co-relation 10521. Up to 966 conditions per place. [2022-11-20 11:37:11,042 INFO L137 encePairwiseOnDemand]: 559/583 looper letters, 195 selfloop transitions, 31 changer transitions 0/683 dead transitions. [2022-11-20 11:37:11,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 683 transitions, 1911 flow [2022-11-20 11:37:11,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:37:11,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:37:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4431 transitions. [2022-11-20 11:37:11,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8444825614636935 [2022-11-20 11:37:11,162 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4431 transitions. [2022-11-20 11:37:11,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4431 transitions. [2022-11-20 11:37:11,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:11,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4431 transitions. [2022-11-20 11:37:11,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 492.3333333333333) internal successors, (4431), 9 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:11,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:11,188 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:11,188 INFO L175 Difference]: Start difference. First operand has 543 places, 548 transitions, 1175 flow. Second operand 9 states and 4431 transitions. [2022-11-20 11:37:11,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 683 transitions, 1911 flow [2022-11-20 11:37:11,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 683 transitions, 1897 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:37:11,204 INFO L231 Difference]: Finished difference. Result has 553 places, 572 transitions, 1375 flow [2022-11-20 11:37:11,205 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=553, PETRI_TRANSITIONS=572} [2022-11-20 11:37:11,206 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 27 predicate places. [2022-11-20 11:37:11,206 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 572 transitions, 1375 flow [2022-11-20 11:37:11,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 469.0) internal successors, (2814), 6 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:11,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:11,208 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:11,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:37:11,208 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-20 11:37:11,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:11,209 INFO L85 PathProgramCache]: Analyzing trace with hash -436477753, now seen corresponding path program 1 times [2022-11-20 11:37:11,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:11,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445978571] [2022-11-20 11:37:11,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:11,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:11,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:11,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445978571] [2022-11-20 11:37:11,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445978571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:11,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:11,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:37:11,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516892242] [2022-11-20 11:37:11,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:11,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:37:11,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:11,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:37:11,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:37:11,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 463 out of 583 [2022-11-20 11:37:11,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 572 transitions, 1375 flow. Second operand has 4 states, 4 states have (on average 464.75) internal successors, (1859), 4 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:11,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:11,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 463 of 583 [2022-11-20 11:37:11,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:17,411 INFO L130 PetriNetUnfolder]: 1701/11567 cut-off events. [2022-11-20 11:37:17,411 INFO L131 PetriNetUnfolder]: For 1339/1339 co-relation queries the response was YES. [2022-11-20 11:37:17,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19655 conditions, 11567 events. 1701/11567 cut-off events. For 1339/1339 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 125370 event pairs, 660 based on Foata normal form. 160/10107 useless extension candidates. Maximal degree in co-relation 15716. Up to 2166 conditions per place. [2022-11-20 11:37:17,795 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 126 selfloop transitions, 22 changer transitions 0/609 dead transitions. [2022-11-20 11:37:17,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 609 transitions, 1742 flow [2022-11-20 11:37:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:37:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:37:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1994 transitions. [2022-11-20 11:37:17,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8550600343053173 [2022-11-20 11:37:17,802 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1994 transitions. [2022-11-20 11:37:17,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1994 transitions. [2022-11-20 11:37:17,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:17,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1994 transitions. [2022-11-20 11:37:17,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 498.5) internal successors, (1994), 4 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:17,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:17,816 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:17,817 INFO L175 Difference]: Start difference. First operand has 553 places, 572 transitions, 1375 flow. Second operand 4 states and 1994 transitions. [2022-11-20 11:37:17,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 609 transitions, 1742 flow [2022-11-20 11:37:17,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 609 transitions, 1740 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:37:17,845 INFO L231 Difference]: Finished difference. Result has 554 places, 578 transitions, 1509 flow [2022-11-20 11:37:17,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1509, PETRI_PLACES=554, PETRI_TRANSITIONS=578} [2022-11-20 11:37:17,847 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 28 predicate places. [2022-11-20 11:37:17,848 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 578 transitions, 1509 flow [2022-11-20 11:37:17,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 464.75) internal successors, (1859), 4 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:17,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:17,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:17,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:37:17,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-20 11:37:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:17,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1577499575, now seen corresponding path program 1 times [2022-11-20 11:37:17,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:17,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172969788] [2022-11-20 11:37:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:17,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:18,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:18,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172969788] [2022-11-20 11:37:18,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172969788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:18,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:18,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:37:18,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968690664] [2022-11-20 11:37:18,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:18,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:37:18,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:18,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:37:18,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:37:18,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 583 [2022-11-20 11:37:18,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 578 transitions, 1509 flow. Second operand has 9 states, 9 states have (on average 514.7777777777778) internal successors, (4633), 9 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:18,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:18,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 583 [2022-11-20 11:37:18,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:29,018 INFO L130 PetriNetUnfolder]: 2588/46589 cut-off events. [2022-11-20 11:37:29,018 INFO L131 PetriNetUnfolder]: For 1081/1101 co-relation queries the response was YES. [2022-11-20 11:37:29,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49880 conditions, 46589 events. 2588/46589 cut-off events. For 1081/1101 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 666319 event pairs, 443 based on Foata normal form. 0/37201 useless extension candidates. Maximal degree in co-relation 48628. Up to 987 conditions per place. [2022-11-20 11:37:29,790 INFO L137 encePairwiseOnDemand]: 571/583 looper letters, 51 selfloop transitions, 11 changer transitions 0/594 dead transitions. [2022-11-20 11:37:29,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 594 transitions, 1671 flow [2022-11-20 11:37:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:37:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:37:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5689 transitions. [2022-11-20 11:37:29,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8871043193513176 [2022-11-20 11:37:29,813 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5689 transitions. [2022-11-20 11:37:29,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5689 transitions. [2022-11-20 11:37:29,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:29,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5689 transitions. [2022-11-20 11:37:29,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 517.1818181818181) internal successors, (5689), 11 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:29,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 583.0) internal successors, (6996), 12 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:29,855 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 583.0) internal successors, (6996), 12 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:29,855 INFO L175 Difference]: Start difference. First operand has 554 places, 578 transitions, 1509 flow. Second operand 11 states and 5689 transitions. [2022-11-20 11:37:29,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 594 transitions, 1671 flow [2022-11-20 11:37:29,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 594 transitions, 1671 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:37:29,888 INFO L231 Difference]: Finished difference. Result has 570 places, 583 transitions, 1567 flow [2022-11-20 11:37:29,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1567, PETRI_PLACES=570, PETRI_TRANSITIONS=583} [2022-11-20 11:37:29,893 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 44 predicate places. [2022-11-20 11:37:29,893 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 583 transitions, 1567 flow [2022-11-20 11:37:29,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 514.7777777777778) internal successors, (4633), 9 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:29,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:29,896 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:29,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:37:29,897 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-20 11:37:29,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:29,898 INFO L85 PathProgramCache]: Analyzing trace with hash -994600474, now seen corresponding path program 1 times [2022-11-20 11:37:29,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:29,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278143695] [2022-11-20 11:37:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:29,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:30,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:30,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278143695] [2022-11-20 11:37:30,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278143695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:30,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:30,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:37:30,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941403887] [2022-11-20 11:37:30,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:30,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:37:30,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:37:30,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:37:30,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 583 [2022-11-20 11:37:30,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 583 transitions, 1567 flow. Second operand has 6 states, 6 states have (on average 469.1666666666667) internal successors, (2815), 6 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:30,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:30,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 583 [2022-11-20 11:37:30,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:41,834 INFO L130 PetriNetUnfolder]: 4883/23819 cut-off events. [2022-11-20 11:37:41,835 INFO L131 PetriNetUnfolder]: For 4764/4786 co-relation queries the response was YES. [2022-11-20 11:37:42,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34762 conditions, 23819 events. 4883/23819 cut-off events. For 4764/4786 co-relation queries the response was YES. Maximal size of possible extension queue 2497. Compared 354139 event pairs, 616 based on Foata normal form. 0/17065 useless extension candidates. Maximal degree in co-relation 31352. Up to 4180 conditions per place. [2022-11-20 11:37:42,604 INFO L137 encePairwiseOnDemand]: 559/583 looper letters, 194 selfloop transitions, 31 changer transitions 0/716 dead transitions. [2022-11-20 11:37:42,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 716 transitions, 2289 flow [2022-11-20 11:37:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:37:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:37:42,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4429 transitions. [2022-11-20 11:37:42,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441013912712025 [2022-11-20 11:37:42,624 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4429 transitions. [2022-11-20 11:37:42,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4429 transitions. [2022-11-20 11:37:42,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:42,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4429 transitions. [2022-11-20 11:37:42,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 492.1111111111111) internal successors, (4429), 9 states have internal predecessors, (4429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:42,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:42,661 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:42,662 INFO L175 Difference]: Start difference. First operand has 570 places, 583 transitions, 1567 flow. Second operand 9 states and 4429 transitions. [2022-11-20 11:37:42,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 716 transitions, 2289 flow [2022-11-20 11:37:42,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 716 transitions, 2282 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:37:42,685 INFO L231 Difference]: Finished difference. Result has 582 places, 607 transitions, 1774 flow [2022-11-20 11:37:42,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1774, PETRI_PLACES=582, PETRI_TRANSITIONS=607} [2022-11-20 11:37:42,689 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 56 predicate places. [2022-11-20 11:37:42,689 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 607 transitions, 1774 flow [2022-11-20 11:37:42,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 469.1666666666667) internal successors, (2815), 6 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:42,690 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:42,691 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:42,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:37:42,691 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-20 11:37:42,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:42,692 INFO L85 PathProgramCache]: Analyzing trace with hash -767841993, now seen corresponding path program 1 times [2022-11-20 11:37:42,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:42,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779417634] [2022-11-20 11:37:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:42,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:42,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:42,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779417634] [2022-11-20 11:37:42,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779417634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:42,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:42,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:37:42,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279981603] [2022-11-20 11:37:42,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:42,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:37:42,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:42,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:37:42,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:37:42,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 463 out of 583 [2022-11-20 11:37:42,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 607 transitions, 1774 flow. Second operand has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:42,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:42,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 463 of 583 [2022-11-20 11:37:42,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:00,672 INFO L130 PetriNetUnfolder]: 6847/33721 cut-off events. [2022-11-20 11:38:00,672 INFO L131 PetriNetUnfolder]: For 9941/9963 co-relation queries the response was YES. [2022-11-20 11:38:01,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51474 conditions, 33721 events. 6847/33721 cut-off events. For 9941/9963 co-relation queries the response was YES. Maximal size of possible extension queue 3520. Compared 524528 event pairs, 572 based on Foata normal form. 432/25152 useless extension candidates. Maximal degree in co-relation 46272. Up to 6933 conditions per place. [2022-11-20 11:38:01,812 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 125 selfloop transitions, 22 changer transitions 0/643 dead transitions. [2022-11-20 11:38:01,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 643 transitions, 2134 flow [2022-11-20 11:38:01,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:38:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:38:01,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1993 transitions. [2022-11-20 11:38:01,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8546312178387651 [2022-11-20 11:38:01,819 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1993 transitions. [2022-11-20 11:38:01,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1993 transitions. [2022-11-20 11:38:01,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:01,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1993 transitions. [2022-11-20 11:38:01,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 498.25) internal successors, (1993), 4 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:01,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:01,832 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:01,832 INFO L175 Difference]: Start difference. First operand has 582 places, 607 transitions, 1774 flow. Second operand 4 states and 1993 transitions. [2022-11-20 11:38:01,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 643 transitions, 2134 flow [2022-11-20 11:38:01,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 643 transitions, 2132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:38:01,892 INFO L231 Difference]: Finished difference. Result has 583 places, 613 transitions, 1908 flow [2022-11-20 11:38:01,894 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1908, PETRI_PLACES=583, PETRI_TRANSITIONS=613} [2022-11-20 11:38:01,894 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 57 predicate places. [2022-11-20 11:38:01,895 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 613 transitions, 1908 flow [2022-11-20 11:38:01,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:01,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:01,896 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:01,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:38:01,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-20 11:38:01,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1908863815, now seen corresponding path program 1 times [2022-11-20 11:38:01,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:01,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522094773] [2022-11-20 11:38:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:01,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:02,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:02,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522094773] [2022-11-20 11:38:02,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522094773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:02,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:02,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:38:02,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486028647] [2022-11-20 11:38:02,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:02,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:38:02,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:02,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:38:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:38:02,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 583 [2022-11-20 11:38:02,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 613 transitions, 1908 flow. Second operand has 9 states, 9 states have (on average 514.8888888888889) internal successors, (4634), 9 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:02,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:02,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 583 [2022-11-20 11:38:02,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand