./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro --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 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 --- 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-8393723 [2022-11-18 20:15:55,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:15:55,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:15:55,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:15:55,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:15:55,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:15:55,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:15:55,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:15:55,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:15:55,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:15:55,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:15:55,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:15:55,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:15:55,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:15:55,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:15:55,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:15:55,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:15:55,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:15:55,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:15:55,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:15:55,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:15:55,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:15:55,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:15:55,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:15:55,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:15:55,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:15:55,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:15:55,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:15:55,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:15:55,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:15:55,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:15:55,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:15:55,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:15:55,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:15:55,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:15:55,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:15:55,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:15:55,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:15:55,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:15:55,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:15:55,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:15:55,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:15:55,667 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:15:55,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:15:55,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:15:55,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:15:55,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:15:55,668 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:15:55,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:15:55,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:15:55,669 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:15:55,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:15:55,670 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:15:55,670 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:15:55,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:15:55,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:15:55,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:15:55,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:15:55,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:15:55,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:15:55,672 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:15:55,672 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:15:55,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:15:55,672 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:15:55,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:15:55,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:15:55,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:15:55,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:15:55,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:15:55,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:15:55,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:15:55,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:15:55,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:15:55,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:15:55,675 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:15:55,675 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:15:55,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:15:55,675 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_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 [2022-11-18 20:15:55,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:15:55,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:15:55,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:15:55,948 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:15:55,949 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:15:55,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2022-11-18 20:15:56,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/data/ae95505a2/b6de4bc3eb594e6bb1b2ccc6dc25c982/FLAGa3d187e49 [2022-11-18 20:15:56,509 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:15:56,510 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2022-11-18 20:15:56,544 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/data/ae95505a2/b6de4bc3eb594e6bb1b2ccc6dc25c982/FLAGa3d187e49 [2022-11-18 20:15:56,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/data/ae95505a2/b6de4bc3eb594e6bb1b2ccc6dc25c982 [2022-11-18 20:15:56,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:15:56,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:15:56,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:15:56,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:15:56,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:15:56,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:15:56" (1/1) ... [2022-11-18 20:15:56,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8961043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:56, skipping insertion in model container [2022-11-18 20:15:56,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:15:56" (1/1) ... [2022-11-18 20:15:56,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:15:56,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:15:57,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:15:57,254 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:15:57,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:15:57,377 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:15:57,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57 WrapperNode [2022-11-18 20:15:57,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:15:57,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:15:57,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:15:57,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:15:57,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57" (1/1) ... [2022-11-18 20:15:57,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57" (1/1) ... [2022-11-18 20:15:57,420 INFO L138 Inliner]: procedures = 161, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-11-18 20:15:57,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:15:57,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:15:57,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:15:57,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:15:57,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57" (1/1) ... [2022-11-18 20:15:57,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57" (1/1) ... [2022-11-18 20:15:57,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57" (1/1) ... [2022-11-18 20:15:57,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57" (1/1) ... [2022-11-18 20:15:57,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57" (1/1) ... [2022-11-18 20:15:57,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57" (1/1) ... [2022-11-18 20:15:57,459 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57" (1/1) ... [2022-11-18 20:15:57,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57" (1/1) ... [2022-11-18 20:15:57,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:15:57,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:15:57,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:15:57,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:15:57,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57" (1/1) ... [2022-11-18 20:15:57,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:15:57,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:57,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:15:57,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:15:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:15:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:15:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:15:57,546 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:15:57,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:15:57,548 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:15:57,679 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:15:57,681 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:15:57,845 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:15:57,863 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:15:57,863 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:15:57,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:15:57 BoogieIcfgContainer [2022-11-18 20:15:57,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:15:57,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:15:57,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:15:57,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:15:57,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:15:56" (1/3) ... [2022-11-18 20:15:57,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605035e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:15:57, skipping insertion in model container [2022-11-18 20:15:57,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:57" (2/3) ... [2022-11-18 20:15:57,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605035e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:15:57, skipping insertion in model container [2022-11-18 20:15:57,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:15:57" (3/3) ... [2022-11-18 20:15:57,885 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_23-idxsense_nr.i [2022-11-18 20:15:57,894 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:15:57,921 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:15:57,921 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 20:15:57,921 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:15:58,007 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:15:58,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 163 flow [2022-11-18 20:15:58,085 INFO L130 PetriNetUnfolder]: 2/78 cut-off events. [2022-11-18 20:15:58,085 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:15:58,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2022-11-18 20:15:58,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 79 transitions, 163 flow [2022-11-18 20:15:58,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 78 transitions, 159 flow [2022-11-18 20:15:58,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:15:58,112 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;@34763ff2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:15:58,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-18 20:15:58,120 INFO L130 PetriNetUnfolder]: 1/22 cut-off events. [2022-11-18 20:15:58,120 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:15:58,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:58,121 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:58,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:15:58,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:58,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1315720074, now seen corresponding path program 1 times [2022-11-18 20:15:58,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:58,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677859536] [2022-11-18 20:15:58,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:58,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:58,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:58,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677859536] [2022-11-18 20:15:58,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677859536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:58,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:58,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:15:58,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21702775] [2022-11-18 20:15:58,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:58,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:15:58,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:58,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:15:58,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:15:58,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 79 [2022-11-18 20:15:58,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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) [2022-11-18 20:15:58,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:58,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 79 [2022-11-18 20:15:58,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:58,737 INFO L130 PetriNetUnfolder]: 1/84 cut-off events. [2022-11-18 20:15:58,738 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:15:58,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 84 events. 1/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 55. Up to 14 conditions per place. [2022-11-18 20:15:58,740 INFO L137 encePairwiseOnDemand]: 71/79 looper letters, 16 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2022-11-18 20:15:58,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 211 flow [2022-11-18 20:15:58,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:15:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:15:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 350 transitions. [2022-11-18 20:15:58,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8860759493670886 [2022-11-18 20:15:58,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 350 transitions. [2022-11-18 20:15:58,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 350 transitions. [2022-11-18 20:15:58,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:58,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 350 transitions. [2022-11-18 20:15:58,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 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) [2022-11-18 20:15:58,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 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) [2022-11-18 20:15:58,778 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 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) [2022-11-18 20:15:58,781 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 159 flow. Second operand 5 states and 350 transitions. [2022-11-18 20:15:58,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 211 flow [2022-11-18 20:15:58,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 84 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:15:58,789 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 188 flow [2022-11-18 20:15:58,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2022-11-18 20:15:58,795 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 6 predicate places. [2022-11-18 20:15:58,796 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 188 flow [2022-11-18 20:15:58,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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) [2022-11-18 20:15:58,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:58,797 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:58,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:15:58,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:15:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:58,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2088827881, now seen corresponding path program 1 times [2022-11-18 20:15:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:58,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797212576] [2022-11-18 20:15:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:58,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:15:58,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:58,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797212576] [2022-11-18 20:15:58,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797212576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:58,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:58,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:15:58,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751152413] [2022-11-18 20:15:58,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:58,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:15:58,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:15:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:15:58,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 79 [2022-11-18 20:15:58,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 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) [2022-11-18 20:15:58,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:58,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 79 [2022-11-18 20:15:58,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:59,033 INFO L130 PetriNetUnfolder]: 1/83 cut-off events. [2022-11-18 20:15:59,034 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:15:59,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 83 events. 1/83 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 78. Up to 7 conditions per place. [2022-11-18 20:15:59,035 INFO L137 encePairwiseOnDemand]: 73/79 looper letters, 8 selfloop transitions, 8 changer transitions 0/80 dead transitions. [2022-11-18 20:15:59,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 80 transitions, 218 flow [2022-11-18 20:15:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:15:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:15:59,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2022-11-18 20:15:59,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8582278481012658 [2022-11-18 20:15:59,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 339 transitions. [2022-11-18 20:15:59,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 339 transitions. [2022-11-18 20:15:59,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:59,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 339 transitions. [2022-11-18 20:15:59,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 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) [2022-11-18 20:15:59,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 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) [2022-11-18 20:15:59,046 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 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) [2022-11-18 20:15:59,046 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 188 flow. Second operand 5 states and 339 transitions. [2022-11-18 20:15:59,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 80 transitions, 218 flow [2022-11-18 20:15:59,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 80 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:15:59,050 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 206 flow [2022-11-18 20:15:59,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2022-11-18 20:15:59,051 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 9 predicate places. [2022-11-18 20:15:59,052 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 206 flow [2022-11-18 20:15:59,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 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) [2022-11-18 20:15:59,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:59,053 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:59,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:15:59,053 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:15:59,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:59,054 INFO L85 PathProgramCache]: Analyzing trace with hash 329155042, now seen corresponding path program 1 times [2022-11-18 20:15:59,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:59,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651822378] [2022-11-18 20:15:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:59,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:59,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:59,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651822378] [2022-11-18 20:15:59,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651822378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:15:59,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328408038] [2022-11-18 20:15:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:59,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:59,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:59,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:15:59,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:15:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:59,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:15:59,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:59,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:15:59,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328408038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:59,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:15:59,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:15:59,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874129576] [2022-11-18 20:15:59,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:59,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:15:59,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:59,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:15:59,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:15:59,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 79 [2022-11-18 20:15:59,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 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) [2022-11-18 20:15:59,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:59,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 79 [2022-11-18 20:15:59,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:59,487 INFO L130 PetriNetUnfolder]: 1/82 cut-off events. [2022-11-18 20:15:59,487 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-18 20:15:59,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 82 events. 1/82 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 12. Up to 9 conditions per place. [2022-11-18 20:15:59,488 INFO L137 encePairwiseOnDemand]: 75/79 looper letters, 10 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2022-11-18 20:15:59,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 79 transitions, 232 flow [2022-11-18 20:15:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:15:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:15:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2022-11-18 20:15:59,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8607594936708861 [2022-11-18 20:15:59,491 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2022-11-18 20:15:59,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2022-11-18 20:15:59,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:59,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2022-11-18 20:15:59,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2022-11-18 20:15:59,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 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) [2022-11-18 20:15:59,495 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 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) [2022-11-18 20:15:59,495 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 206 flow. Second operand 4 states and 272 transitions. [2022-11-18 20:15:59,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 79 transitions, 232 flow [2022-11-18 20:15:59,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 79 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:15:59,504 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 200 flow [2022-11-18 20:15:59,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2022-11-18 20:15:59,505 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 8 predicate places. [2022-11-18 20:15:59,506 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 200 flow [2022-11-18 20:15:59,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 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) [2022-11-18 20:15:59,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:59,506 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] [2022-11-18 20:15:59,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:59,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:59,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:15:59,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:59,713 INFO L85 PathProgramCache]: Analyzing trace with hash -377282251, now seen corresponding path program 1 times [2022-11-18 20:15:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:59,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372256569] [2022-11-18 20:15:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:59,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:59,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:59,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372256569] [2022-11-18 20:15:59,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372256569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:15:59,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346579140] [2022-11-18 20:15:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:59,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:59,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:59,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:15:59,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:15:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:59,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:15:59,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:00,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:00,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346579140] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:16:00,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:16:00,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:16:00,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243192166] [2022-11-18 20:16:00,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:16:00,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:16:00,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:00,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:16:00,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:16:00,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 79 [2022-11-18 20:16:00,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 200 flow. Second operand has 10 states, 10 states have (on average 67.7) internal successors, (677), 10 states have internal predecessors, (677), 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) [2022-11-18 20:16:00,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:00,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 79 [2022-11-18 20:16:00,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:00,294 INFO L130 PetriNetUnfolder]: 1/90 cut-off events. [2022-11-18 20:16:00,299 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-18 20:16:00,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 90 events. 1/90 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 2/86 useless extension candidates. Maximal degree in co-relation 66. Up to 7 conditions per place. [2022-11-18 20:16:00,300 INFO L137 encePairwiseOnDemand]: 73/79 looper letters, 17 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2022-11-18 20:16:00,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 290 flow [2022-11-18 20:16:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:16:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:16:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 613 transitions. [2022-11-18 20:16:00,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8621659634317862 [2022-11-18 20:16:00,305 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 613 transitions. [2022-11-18 20:16:00,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 613 transitions. [2022-11-18 20:16:00,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:00,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 613 transitions. [2022-11-18 20:16:00,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.11111111111111) internal successors, (613), 9 states have internal predecessors, (613), 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) [2022-11-18 20:16:00,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 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) [2022-11-18 20:16:00,311 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 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) [2022-11-18 20:16:00,311 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 200 flow. Second operand 9 states and 613 transitions. [2022-11-18 20:16:00,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 290 flow [2022-11-18 20:16:00,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 276 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:16:00,317 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 246 flow [2022-11-18 20:16:00,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=246, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2022-11-18 20:16:00,318 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 17 predicate places. [2022-11-18 20:16:00,319 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 246 flow [2022-11-18 20:16:00,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.7) internal successors, (677), 10 states have internal predecessors, (677), 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) [2022-11-18 20:16:00,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:00,320 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:00,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:00,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:00,532 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:16:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:00,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1754114539, now seen corresponding path program 2 times [2022-11-18 20:16:00,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:00,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459136712] [2022-11-18 20:16:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:00,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:00,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459136712] [2022-11-18 20:16:00,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459136712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:16:00,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151176262] [2022-11-18 20:16:00,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:16:00,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:00,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:16:00,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:16:00,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:16:00,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:16:00,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:16:00,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:16:00,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:00,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-18 20:16:00,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-18 20:16:01,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:16:01,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-18 20:16:01,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:16:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:16:01,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:16:01,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151176262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:01,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:16:01,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2022-11-18 20:16:01,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715884977] [2022-11-18 20:16:01,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:01,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:16:01,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:01,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:16:01,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:16:01,336 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2022-11-18 20:16:01,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 246 flow. Second operand has 10 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 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) [2022-11-18 20:16:01,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:01,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2022-11-18 20:16:01,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:01,571 INFO L130 PetriNetUnfolder]: 121/473 cut-off events. [2022-11-18 20:16:01,572 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-18 20:16:01,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 473 events. 121/473 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2207 event pairs, 44 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 714. Up to 196 conditions per place. [2022-11-18 20:16:01,581 INFO L137 encePairwiseOnDemand]: 67/79 looper letters, 45 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2022-11-18 20:16:01,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 111 transitions, 420 flow [2022-11-18 20:16:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:16:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:16:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 483 transitions. [2022-11-18 20:16:01,585 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.679324894514768 [2022-11-18 20:16:01,585 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 483 transitions. [2022-11-18 20:16:01,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 483 transitions. [2022-11-18 20:16:01,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:01,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 483 transitions. [2022-11-18 20:16:01,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 53.666666666666664) internal successors, (483), 9 states have internal predecessors, (483), 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) [2022-11-18 20:16:01,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 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) [2022-11-18 20:16:01,589 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 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) [2022-11-18 20:16:01,589 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 246 flow. Second operand 9 states and 483 transitions. [2022-11-18 20:16:01,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 111 transitions, 420 flow [2022-11-18 20:16:01,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 111 transitions, 404 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-18 20:16:01,594 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 301 flow [2022-11-18 20:16:01,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=301, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2022-11-18 20:16:01,595 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 24 predicate places. [2022-11-18 20:16:01,595 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 301 flow [2022-11-18 20:16:01,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 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) [2022-11-18 20:16:01,596 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:01,596 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:01,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:01,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:01,802 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:16:01,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:01,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1306719936, now seen corresponding path program 1 times [2022-11-18 20:16:01,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:01,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372003247] [2022-11-18 20:16:01,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:01,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:02,043 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:02,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:02,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372003247] [2022-11-18 20:16:02,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372003247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:16:02,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497183723] [2022-11-18 20:16:02,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:02,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:02,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:16:02,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:16:02,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:16:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:02,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:16:02,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:02,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:02,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497183723] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:16:02,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:16:02,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:16:02,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551414016] [2022-11-18 20:16:02,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:16:02,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:16:02,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:02,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:16:02,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:16:02,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 79 [2022-11-18 20:16:02,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 301 flow. Second operand has 18 states, 18 states have (on average 68.05555555555556) internal successors, (1225), 18 states have internal predecessors, (1225), 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) [2022-11-18 20:16:02,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:02,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 79 [2022-11-18 20:16:02,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:02,582 INFO L130 PetriNetUnfolder]: 7/218 cut-off events. [2022-11-18 20:16:02,582 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-11-18 20:16:02,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 218 events. 7/218 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 561 event pairs, 2 based on Foata normal form. 4/202 useless extension candidates. Maximal degree in co-relation 307. Up to 14 conditions per place. [2022-11-18 20:16:02,584 INFO L137 encePairwiseOnDemand]: 73/79 looper letters, 33 selfloop transitions, 21 changer transitions 0/126 dead transitions. [2022-11-18 20:16:02,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 126 transitions, 563 flow [2022-11-18 20:16:02,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:16:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:16:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1423 transitions. [2022-11-18 20:16:02,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577456298975287 [2022-11-18 20:16:02,588 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1423 transitions. [2022-11-18 20:16:02,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1423 transitions. [2022-11-18 20:16:02,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:02,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1423 transitions. [2022-11-18 20:16:02,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.76190476190476) internal successors, (1423), 21 states have internal predecessors, (1423), 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) [2022-11-18 20:16:02,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 79.0) internal successors, (1738), 22 states have internal predecessors, (1738), 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) [2022-11-18 20:16:02,598 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 79.0) internal successors, (1738), 22 states have internal predecessors, (1738), 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) [2022-11-18 20:16:02,598 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 301 flow. Second operand 21 states and 1423 transitions. [2022-11-18 20:16:02,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 126 transitions, 563 flow [2022-11-18 20:16:02,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 126 transitions, 553 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:16:02,603 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 447 flow [2022-11-18 20:16:02,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=447, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2022-11-18 20:16:02,604 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 45 predicate places. [2022-11-18 20:16:02,605 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 447 flow [2022-11-18 20:16:02,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 68.05555555555556) internal successors, (1225), 18 states have internal predecessors, (1225), 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) [2022-11-18 20:16:02,605 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:02,606 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:02,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:02,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:16:02,811 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:16:02,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:02,812 INFO L85 PathProgramCache]: Analyzing trace with hash -547033216, now seen corresponding path program 2 times [2022-11-18 20:16:02,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:02,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100439026] [2022-11-18 20:16:02,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:02,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:03,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:03,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100439026] [2022-11-18 20:16:03,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100439026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:16:03,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124080831] [2022-11-18 20:16:03,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:16:03,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:03,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:16:03,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:16:03,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:16:03,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:16:03,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:16:03,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:16:03,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:03,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-18 20:16:03,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-18 20:16:03,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:16:03,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-18 20:16:03,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:16:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-18 20:16:03,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:16:03,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124080831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:03,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:16:03,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2022-11-18 20:16:03,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241075782] [2022-11-18 20:16:03,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:03,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:16:03,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:03,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:16:03,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:16:03,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2022-11-18 20:16:03,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 447 flow. Second operand has 10 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 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) [2022-11-18 20:16:03,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:03,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2022-11-18 20:16:03,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:04,135 INFO L130 PetriNetUnfolder]: 92/415 cut-off events. [2022-11-18 20:16:04,135 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2022-11-18 20:16:04,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 415 events. 92/415 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1738 event pairs, 14 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 659. Up to 176 conditions per place. [2022-11-18 20:16:04,138 INFO L137 encePairwiseOnDemand]: 67/79 looper letters, 37 selfloop transitions, 15 changer transitions 0/120 dead transitions. [2022-11-18 20:16:04,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 120 transitions, 599 flow [2022-11-18 20:16:04,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:16:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:16:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 471 transitions. [2022-11-18 20:16:04,142 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6624472573839663 [2022-11-18 20:16:04,142 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 471 transitions. [2022-11-18 20:16:04,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 471 transitions. [2022-11-18 20:16:04,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:04,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 471 transitions. [2022-11-18 20:16:04,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 52.333333333333336) internal successors, (471), 9 states have internal predecessors, (471), 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) [2022-11-18 20:16:04,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 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) [2022-11-18 20:16:04,147 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 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) [2022-11-18 20:16:04,147 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 447 flow. Second operand 9 states and 471 transitions. [2022-11-18 20:16:04,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 120 transitions, 599 flow [2022-11-18 20:16:04,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 120 transitions, 543 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-11-18 20:16:04,154 INFO L231 Difference]: Finished difference. Result has 128 places, 112 transitions, 472 flow [2022-11-18 20:16:04,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=472, PETRI_PLACES=128, PETRI_TRANSITIONS=112} [2022-11-18 20:16:04,156 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 48 predicate places. [2022-11-18 20:16:04,156 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 112 transitions, 472 flow [2022-11-18 20:16:04,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 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) [2022-11-18 20:16:04,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:04,157 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:04,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:04,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:04,363 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:16:04,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:04,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2078256232, now seen corresponding path program 1 times [2022-11-18 20:16:04,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:04,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626439244] [2022-11-18 20:16:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:04,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:04,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:04,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626439244] [2022-11-18 20:16:04,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626439244] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:16:04,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990180621] [2022-11-18 20:16:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:04,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:04,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:16:04,720 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:16:04,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:16:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:04,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:16:04,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:04,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:05,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990180621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:16:05,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:16:05,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 20:16:05,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205846955] [2022-11-18 20:16:05,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:16:05,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:16:05,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:05,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:16:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:16:05,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 79 [2022-11-18 20:16:05,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 112 transitions, 472 flow. Second operand has 23 states, 23 states have (on average 68.30434782608695) internal successors, (1571), 23 states have internal predecessors, (1571), 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) [2022-11-18 20:16:05,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:05,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 79 [2022-11-18 20:16:05,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:05,590 INFO L130 PetriNetUnfolder]: 19/317 cut-off events. [2022-11-18 20:16:05,590 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2022-11-18 20:16:05,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 317 events. 19/317 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1053 event pairs, 3 based on Foata normal form. 3/291 useless extension candidates. Maximal degree in co-relation 479. Up to 21 conditions per place. [2022-11-18 20:16:05,592 INFO L137 encePairwiseOnDemand]: 73/79 looper letters, 45 selfloop transitions, 30 changer transitions 0/155 dead transitions. [2022-11-18 20:16:05,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 155 transitions, 808 flow [2022-11-18 20:16:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:16:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:16:05,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2028 transitions. [2022-11-18 20:16:05,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8556962025316456 [2022-11-18 20:16:05,598 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2028 transitions. [2022-11-18 20:16:05,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2028 transitions. [2022-11-18 20:16:05,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:05,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2028 transitions. [2022-11-18 20:16:05,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 67.6) internal successors, (2028), 30 states have internal predecessors, (2028), 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) [2022-11-18 20:16:05,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 79.0) internal successors, (2449), 31 states have internal predecessors, (2449), 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) [2022-11-18 20:16:05,612 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 79.0) internal successors, (2449), 31 states have internal predecessors, (2449), 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) [2022-11-18 20:16:05,612 INFO L175 Difference]: Start difference. First operand has 128 places, 112 transitions, 472 flow. Second operand 30 states and 2028 transitions. [2022-11-18 20:16:05,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 155 transitions, 808 flow [2022-11-18 20:16:05,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 155 transitions, 798 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:16:05,618 INFO L231 Difference]: Finished difference. Result has 157 places, 122 transitions, 616 flow [2022-11-18 20:16:05,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=616, PETRI_PLACES=157, PETRI_TRANSITIONS=122} [2022-11-18 20:16:05,619 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 77 predicate places. [2022-11-18 20:16:05,619 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 122 transitions, 616 flow [2022-11-18 20:16:05,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 68.30434782608695) internal successors, (1571), 23 states have internal predecessors, (1571), 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) [2022-11-18 20:16:05,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:05,621 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:05,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:05,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:05,827 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:16:05,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:05,827 INFO L85 PathProgramCache]: Analyzing trace with hash -245089257, now seen corresponding path program 2 times [2022-11-18 20:16:05,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:05,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805746391] [2022-11-18 20:16:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:05,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:16:06,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:06,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805746391] [2022-11-18 20:16:06,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805746391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:06,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:06,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:16:06,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652306575] [2022-11-18 20:16:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:06,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:16:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:06,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:16:06,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:16:06,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2022-11-18 20:16:06,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 122 transitions, 616 flow. Second operand has 10 states, 10 states have (on average 48.5) internal successors, (485), 10 states have internal predecessors, (485), 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) [2022-11-18 20:16:06,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:06,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2022-11-18 20:16:06,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:06,973 INFO L130 PetriNetUnfolder]: 140/577 cut-off events. [2022-11-18 20:16:06,973 INFO L131 PetriNetUnfolder]: For 390/396 co-relation queries the response was YES. [2022-11-18 20:16:06,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 577 events. 140/577 cut-off events. For 390/396 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2526 event pairs, 44 based on Foata normal form. 4/546 useless extension candidates. Maximal degree in co-relation 1035. Up to 119 conditions per place. [2022-11-18 20:16:06,977 INFO L137 encePairwiseOnDemand]: 66/79 looper letters, 58 selfloop transitions, 17 changer transitions 23/176 dead transitions. [2022-11-18 20:16:06,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 176 transitions, 983 flow [2022-11-18 20:16:06,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:16:06,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:16:06,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 655 transitions. [2022-11-18 20:16:06,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6909282700421941 [2022-11-18 20:16:06,980 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 655 transitions. [2022-11-18 20:16:06,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 655 transitions. [2022-11-18 20:16:06,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:06,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 655 transitions. [2022-11-18 20:16:06,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 54.583333333333336) internal successors, (655), 12 states have internal predecessors, (655), 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) [2022-11-18 20:16:06,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:06,985 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:06,986 INFO L175 Difference]: Start difference. First operand has 157 places, 122 transitions, 616 flow. Second operand 12 states and 655 transitions. [2022-11-18 20:16:06,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 176 transitions, 983 flow [2022-11-18 20:16:06,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 176 transitions, 937 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-18 20:16:06,993 INFO L231 Difference]: Finished difference. Result has 155 places, 124 transitions, 646 flow [2022-11-18 20:16:06,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=646, PETRI_PLACES=155, PETRI_TRANSITIONS=124} [2022-11-18 20:16:06,994 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 75 predicate places. [2022-11-18 20:16:06,994 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 124 transitions, 646 flow [2022-11-18 20:16:06,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.5) internal successors, (485), 10 states have internal predecessors, (485), 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) [2022-11-18 20:16:06,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:06,995 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:06,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:16:06,995 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:16:06,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1215441024, now seen corresponding path program 1 times [2022-11-18 20:16:06,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:06,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637301588] [2022-11-18 20:16:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:06,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:16:07,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:07,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637301588] [2022-11-18 20:16:07,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637301588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:07,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:07,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:16:07,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114890209] [2022-11-18 20:16:07,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:07,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:16:07,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:07,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:16:07,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:16:07,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2022-11-18 20:16:07,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 124 transitions, 646 flow. Second operand has 10 states, 10 states have (on average 48.5) internal successors, (485), 10 states have internal predecessors, (485), 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) [2022-11-18 20:16:07,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:07,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2022-11-18 20:16:07,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:07,793 INFO L130 PetriNetUnfolder]: 73/380 cut-off events. [2022-11-18 20:16:07,794 INFO L131 PetriNetUnfolder]: For 668/678 co-relation queries the response was YES. [2022-11-18 20:16:07,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 380 events. 73/380 cut-off events. For 668/678 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1393 event pairs, 13 based on Foata normal form. 8/371 useless extension candidates. Maximal degree in co-relation 1000. Up to 68 conditions per place. [2022-11-18 20:16:07,798 INFO L137 encePairwiseOnDemand]: 67/79 looper letters, 44 selfloop transitions, 16 changer transitions 0/139 dead transitions. [2022-11-18 20:16:07,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 139 transitions, 865 flow [2022-11-18 20:16:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:16:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:16:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 568 transitions. [2022-11-18 20:16:07,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6536248561565017 [2022-11-18 20:16:07,802 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 568 transitions. [2022-11-18 20:16:07,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 568 transitions. [2022-11-18 20:16:07,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:07,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 568 transitions. [2022-11-18 20:16:07,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 51.63636363636363) internal successors, (568), 11 states have internal predecessors, (568), 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) [2022-11-18 20:16:07,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 79.0) internal successors, (948), 12 states have internal predecessors, (948), 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) [2022-11-18 20:16:07,808 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 79.0) internal successors, (948), 12 states have internal predecessors, (948), 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) [2022-11-18 20:16:07,808 INFO L175 Difference]: Start difference. First operand has 155 places, 124 transitions, 646 flow. Second operand 11 states and 568 transitions. [2022-11-18 20:16:07,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 139 transitions, 865 flow [2022-11-18 20:16:07,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 139 transitions, 830 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-11-18 20:16:07,816 INFO L231 Difference]: Finished difference. Result has 153 places, 122 transitions, 645 flow [2022-11-18 20:16:07,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=645, PETRI_PLACES=153, PETRI_TRANSITIONS=122} [2022-11-18 20:16:07,818 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 73 predicate places. [2022-11-18 20:16:07,819 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 122 transitions, 645 flow [2022-11-18 20:16:07,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.5) internal successors, (485), 10 states have internal predecessors, (485), 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) [2022-11-18 20:16:07,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:07,819 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:07,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:16:07,820 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:16:07,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:07,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1654501348, now seen corresponding path program 1 times [2022-11-18 20:16:07,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:07,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471281231] [2022-11-18 20:16:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:07,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:16:08,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:08,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471281231] [2022-11-18 20:16:08,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471281231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:08,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:08,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:16:08,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718774141] [2022-11-18 20:16:08,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:08,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:16:08,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:08,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:16:08,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:16:08,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2022-11-18 20:16:08,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 122 transitions, 645 flow. Second operand has 10 states, 10 states have (on average 48.8) internal successors, (488), 10 states have internal predecessors, (488), 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) [2022-11-18 20:16:08,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:08,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2022-11-18 20:16:08,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:08,824 INFO L130 PetriNetUnfolder]: 73/374 cut-off events. [2022-11-18 20:16:08,824 INFO L131 PetriNetUnfolder]: For 585/589 co-relation queries the response was YES. [2022-11-18 20:16:08,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 374 events. 73/374 cut-off events. For 585/589 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1392 event pairs, 13 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 755. Up to 72 conditions per place. [2022-11-18 20:16:08,827 INFO L137 encePairwiseOnDemand]: 66/79 looper letters, 43 selfloop transitions, 13 changer transitions 10/146 dead transitions. [2022-11-18 20:16:08,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 146 transitions, 875 flow [2022-11-18 20:16:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:16:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:16:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 625 transitions. [2022-11-18 20:16:08,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6592827004219409 [2022-11-18 20:16:08,830 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 625 transitions. [2022-11-18 20:16:08,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 625 transitions. [2022-11-18 20:16:08,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:08,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 625 transitions. [2022-11-18 20:16:08,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.083333333333336) internal successors, (625), 12 states have internal predecessors, (625), 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) [2022-11-18 20:16:08,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:08,836 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:08,836 INFO L175 Difference]: Start difference. First operand has 153 places, 122 transitions, 645 flow. Second operand 12 states and 625 transitions. [2022-11-18 20:16:08,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 146 transitions, 875 flow [2022-11-18 20:16:08,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 146 transitions, 841 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-18 20:16:08,845 INFO L231 Difference]: Finished difference. Result has 159 places, 124 transitions, 668 flow [2022-11-18 20:16:08,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=668, PETRI_PLACES=159, PETRI_TRANSITIONS=124} [2022-11-18 20:16:08,846 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 79 predicate places. [2022-11-18 20:16:08,846 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 124 transitions, 668 flow [2022-11-18 20:16:08,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.8) internal successors, (488), 10 states have internal predecessors, (488), 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) [2022-11-18 20:16:08,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:08,847 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:08,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:16:08,847 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:16:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:08,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1200589961, now seen corresponding path program 1 times [2022-11-18 20:16:08,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:08,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672946926] [2022-11-18 20:16:08,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:08,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:16:09,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:09,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672946926] [2022-11-18 20:16:09,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672946926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:09,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:09,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:09,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225561498] [2022-11-18 20:16:09,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:09,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:16:09,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:09,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:16:09,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:09,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 79 [2022-11-18 20:16:09,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 124 transitions, 668 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2022-11-18 20:16:09,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:09,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 79 [2022-11-18 20:16:09,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:09,137 INFO L130 PetriNetUnfolder]: 27/253 cut-off events. [2022-11-18 20:16:09,137 INFO L131 PetriNetUnfolder]: For 338/339 co-relation queries the response was YES. [2022-11-18 20:16:09,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 253 events. 27/253 cut-off events. For 338/339 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 647 event pairs, 3 based on Foata normal form. 6/259 useless extension candidates. Maximal degree in co-relation 632. Up to 26 conditions per place. [2022-11-18 20:16:09,139 INFO L137 encePairwiseOnDemand]: 75/79 looper letters, 9 selfloop transitions, 5 changer transitions 0/126 dead transitions. [2022-11-18 20:16:09,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 126 transitions, 702 flow [2022-11-18 20:16:09,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:16:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:16:09,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2022-11-18 20:16:09,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.919831223628692 [2022-11-18 20:16:09,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2022-11-18 20:16:09,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2022-11-18 20:16:09,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:09,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2022-11-18 20:16:09,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2022-11-18 20:16:09,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2022-11-18 20:16:09,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2022-11-18 20:16:09,146 INFO L175 Difference]: Start difference. First operand has 159 places, 124 transitions, 668 flow. Second operand 3 states and 218 transitions. [2022-11-18 20:16:09,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 126 transitions, 702 flow [2022-11-18 20:16:09,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 126 transitions, 677 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-11-18 20:16:09,153 INFO L231 Difference]: Finished difference. Result has 151 places, 124 transitions, 653 flow [2022-11-18 20:16:09,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=653, PETRI_PLACES=151, PETRI_TRANSITIONS=124} [2022-11-18 20:16:09,156 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 71 predicate places. [2022-11-18 20:16:09,156 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 124 transitions, 653 flow [2022-11-18 20:16:09,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2022-11-18 20:16:09,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:09,157 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:09,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:16:09,157 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:16:09,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:09,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1469405989, now seen corresponding path program 1 times [2022-11-18 20:16:09,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:09,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792666492] [2022-11-18 20:16:09,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:09,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:16:09,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:09,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792666492] [2022-11-18 20:16:09,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792666492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:09,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:09,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:16:09,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861610683] [2022-11-18 20:16:09,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:09,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:16:09,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:09,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:16:09,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:16:09,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 79 [2022-11-18 20:16:09,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 124 transitions, 653 flow. Second operand has 13 states, 13 states have (on average 42.07692307692308) internal successors, (547), 13 states have internal predecessors, (547), 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) [2022-11-18 20:16:09,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:09,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 79 [2022-11-18 20:16:09,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:10,451 INFO L130 PetriNetUnfolder]: 70/332 cut-off events. [2022-11-18 20:16:10,453 INFO L131 PetriNetUnfolder]: For 483/489 co-relation queries the response was YES. [2022-11-18 20:16:10,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 332 events. 70/332 cut-off events. For 483/489 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1023 event pairs, 25 based on Foata normal form. 5/331 useless extension candidates. Maximal degree in co-relation 798. Up to 44 conditions per place. [2022-11-18 20:16:10,456 INFO L137 encePairwiseOnDemand]: 64/79 looper letters, 49 selfloop transitions, 22 changer transitions 2/142 dead transitions. [2022-11-18 20:16:10,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 142 transitions, 874 flow [2022-11-18 20:16:10,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:16:10,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:16:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 744 transitions. [2022-11-18 20:16:10,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5539836187639613 [2022-11-18 20:16:10,459 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 744 transitions. [2022-11-18 20:16:10,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 744 transitions. [2022-11-18 20:16:10,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:10,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 744 transitions. [2022-11-18 20:16:10,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 43.76470588235294) internal successors, (744), 17 states have internal predecessors, (744), 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) [2022-11-18 20:16:10,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 79.0) internal successors, (1422), 18 states have internal predecessors, (1422), 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) [2022-11-18 20:16:10,468 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 79.0) internal successors, (1422), 18 states have internal predecessors, (1422), 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) [2022-11-18 20:16:10,468 INFO L175 Difference]: Start difference. First operand has 151 places, 124 transitions, 653 flow. Second operand 17 states and 744 transitions. [2022-11-18 20:16:10,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 142 transitions, 874 flow [2022-11-18 20:16:10,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 142 transitions, 867 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:16:10,478 INFO L231 Difference]: Finished difference. Result has 165 places, 123 transitions, 688 flow [2022-11-18 20:16:10,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=688, PETRI_PLACES=165, PETRI_TRANSITIONS=123} [2022-11-18 20:16:10,480 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 85 predicate places. [2022-11-18 20:16:10,480 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 123 transitions, 688 flow [2022-11-18 20:16:10,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 42.07692307692308) internal successors, (547), 13 states have internal predecessors, (547), 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) [2022-11-18 20:16:10,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:10,481 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:10,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:16:10,482 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:16:10,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:10,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2080761086, now seen corresponding path program 1 times [2022-11-18 20:16:10,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:10,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930570942] [2022-11-18 20:16:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:10,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:16:11,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:11,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930570942] [2022-11-18 20:16:11,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930570942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:11,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:11,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:16:11,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336515667] [2022-11-18 20:16:11,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:11,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:16:11,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:11,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:16:11,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:16:11,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 79 [2022-11-18 20:16:11,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 123 transitions, 688 flow. Second operand has 13 states, 13 states have (on average 42.07692307692308) internal successors, (547), 13 states have internal predecessors, (547), 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) [2022-11-18 20:16:11,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:11,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 79 [2022-11-18 20:16:11,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:11,781 INFO L130 PetriNetUnfolder]: 68/321 cut-off events. [2022-11-18 20:16:11,781 INFO L131 PetriNetUnfolder]: For 576/582 co-relation queries the response was YES. [2022-11-18 20:16:11,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 321 events. 68/321 cut-off events. For 576/582 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 969 event pairs, 12 based on Foata normal form. 7/324 useless extension candidates. Maximal degree in co-relation 823. Up to 44 conditions per place. [2022-11-18 20:16:11,784 INFO L137 encePairwiseOnDemand]: 64/79 looper letters, 56 selfloop transitions, 22 changer transitions 2/149 dead transitions. [2022-11-18 20:16:11,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 149 transitions, 945 flow [2022-11-18 20:16:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:16:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:16:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 751 transitions. [2022-11-18 20:16:11,787 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591958302308265 [2022-11-18 20:16:11,787 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 751 transitions. [2022-11-18 20:16:11,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 751 transitions. [2022-11-18 20:16:11,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:11,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 751 transitions. [2022-11-18 20:16:11,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 44.1764705882353) internal successors, (751), 17 states have internal predecessors, (751), 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) [2022-11-18 20:16:11,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 79.0) internal successors, (1422), 18 states have internal predecessors, (1422), 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) [2022-11-18 20:16:11,793 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 79.0) internal successors, (1422), 18 states have internal predecessors, (1422), 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) [2022-11-18 20:16:11,793 INFO L175 Difference]: Start difference. First operand has 165 places, 123 transitions, 688 flow. Second operand 17 states and 751 transitions. [2022-11-18 20:16:11,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 149 transitions, 945 flow [2022-11-18 20:16:11,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 149 transitions, 886 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-11-18 20:16:11,802 INFO L231 Difference]: Finished difference. Result has 163 places, 122 transitions, 667 flow [2022-11-18 20:16:11,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=667, PETRI_PLACES=163, PETRI_TRANSITIONS=122} [2022-11-18 20:16:11,803 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 83 predicate places. [2022-11-18 20:16:11,803 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 122 transitions, 667 flow [2022-11-18 20:16:11,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 42.07692307692308) internal successors, (547), 13 states have internal predecessors, (547), 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) [2022-11-18 20:16:11,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:11,804 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:11,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:16:11,804 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:16:11,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2132471252, now seen corresponding path program 1 times [2022-11-18 20:16:11,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:11,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393173700] [2022-11-18 20:16:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:11,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:16:12,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:12,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393173700] [2022-11-18 20:16:12,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393173700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:12,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:12,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:16:12,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064534420] [2022-11-18 20:16:12,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:12,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:16:12,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:12,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:16:12,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:16:12,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 79 [2022-11-18 20:16:12,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 122 transitions, 667 flow. Second operand has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 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) [2022-11-18 20:16:12,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:12,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 79 [2022-11-18 20:16:12,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:12,152 INFO L130 PetriNetUnfolder]: 33/258 cut-off events. [2022-11-18 20:16:12,152 INFO L131 PetriNetUnfolder]: For 473/484 co-relation queries the response was YES. [2022-11-18 20:16:12,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 258 events. 33/258 cut-off events. For 473/484 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 697 event pairs, 5 based on Foata normal form. 5/259 useless extension candidates. Maximal degree in co-relation 691. Up to 55 conditions per place. [2022-11-18 20:16:12,154 INFO L137 encePairwiseOnDemand]: 71/79 looper letters, 17 selfloop transitions, 2 changer transitions 34/128 dead transitions. [2022-11-18 20:16:12,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 128 transitions, 787 flow [2022-11-18 20:16:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:16:12,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:16:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 404 transitions. [2022-11-18 20:16:12,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7305605786618445 [2022-11-18 20:16:12,156 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 404 transitions. [2022-11-18 20:16:12,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 404 transitions. [2022-11-18 20:16:12,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:12,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 404 transitions. [2022-11-18 20:16:12,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 57.714285714285715) internal successors, (404), 7 states have internal predecessors, (404), 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) [2022-11-18 20:16:12,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 79.0) internal successors, (632), 8 states have internal predecessors, (632), 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) [2022-11-18 20:16:12,159 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 79.0) internal successors, (632), 8 states have internal predecessors, (632), 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) [2022-11-18 20:16:12,159 INFO L175 Difference]: Start difference. First operand has 163 places, 122 transitions, 667 flow. Second operand 7 states and 404 transitions. [2022-11-18 20:16:12,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 128 transitions, 787 flow [2022-11-18 20:16:12,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 128 transitions, 721 flow, removed 3 selfloop flow, removed 17 redundant places. [2022-11-18 20:16:12,166 INFO L231 Difference]: Finished difference. Result has 151 places, 94 transitions, 460 flow [2022-11-18 20:16:12,167 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=460, PETRI_PLACES=151, PETRI_TRANSITIONS=94} [2022-11-18 20:16:12,167 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 71 predicate places. [2022-11-18 20:16:12,167 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 94 transitions, 460 flow [2022-11-18 20:16:12,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 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) [2022-11-18 20:16:12,168 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:12,168 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:12,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:16:12,168 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-18 20:16:12,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:12,169 INFO L85 PathProgramCache]: Analyzing trace with hash 750050825, now seen corresponding path program 1 times [2022-11-18 20:16:12,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:12,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284704436] [2022-11-18 20:16:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:12,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:16:12,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:12,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284704436] [2022-11-18 20:16:12,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284704436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:12,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:12,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:16:12,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551934941] [2022-11-18 20:16:12,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:12,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:16:12,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:12,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:16:12,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:16:12,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 79 [2022-11-18 20:16:12,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 94 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 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) [2022-11-18 20:16:12,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:12,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 79 [2022-11-18 20:16:12,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:12,451 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2022-11-18 20:16:12,451 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2022-11-18 20:16:12,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 132 events. 2/132 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 1 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 319. Up to 12 conditions per place. [2022-11-18 20:16:12,452 INFO L137 encePairwiseOnDemand]: 71/79 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2022-11-18 20:16:12,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 93 transitions, 490 flow [2022-11-18 20:16:12,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:16:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:16:12,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 389 transitions. [2022-11-18 20:16:12,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7034358047016275 [2022-11-18 20:16:12,454 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 389 transitions. [2022-11-18 20:16:12,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 389 transitions. [2022-11-18 20:16:12,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:12,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 389 transitions. [2022-11-18 20:16:12,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 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) [2022-11-18 20:16:12,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 79.0) internal successors, (632), 8 states have internal predecessors, (632), 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) [2022-11-18 20:16:12,457 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 79.0) internal successors, (632), 8 states have internal predecessors, (632), 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) [2022-11-18 20:16:12,457 INFO L175 Difference]: Start difference. First operand has 151 places, 94 transitions, 460 flow. Second operand 7 states and 389 transitions. [2022-11-18 20:16:12,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 93 transitions, 490 flow [2022-11-18 20:16:12,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 93 transitions, 456 flow, removed 3 selfloop flow, removed 15 redundant places. [2022-11-18 20:16:12,462 INFO L231 Difference]: Finished difference. Result has 123 places, 0 transitions, 0 flow [2022-11-18 20:16:12,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=123, PETRI_TRANSITIONS=0} [2022-11-18 20:16:12,463 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 43 predicate places. [2022-11-18 20:16:12,463 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 0 transitions, 0 flow [2022-11-18 20:16:12,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 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) [2022-11-18 20:16:12,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2022-11-18 20:16:12,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-18 20:16:12,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-18 20:16:12,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-18 20:16:12,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-18 20:16:12,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-18 20:16:12,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2022-11-18 20:16:12,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-18 20:16:12,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-18 20:16:12,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-18 20:16:12,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-18 20:16:12,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:16:12,470 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:12,476 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:16:12,476 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:16:12,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:16:12 BasicIcfg [2022-11-18 20:16:12,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:16:12,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:16:12,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:16:12,483 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:16:12,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:15:57" (3/4) ... [2022-11-18 20:16:12,487 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:16:12,494 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-18 20:16:12,505 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-18 20:16:12,505 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-18 20:16:12,506 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:16:12,545 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:16:12,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:16:12,546 INFO L158 Benchmark]: Toolchain (without parser) took 15711.79ms. Allocated memory was 121.6MB in the beginning and 211.8MB in the end (delta: 90.2MB). Free memory was 80.9MB in the beginning and 175.8MB in the end (delta: -94.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:16:12,547 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:16:12,547 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.62ms. Allocated memory is still 121.6MB. Free memory was 80.8MB in the beginning and 85.7MB in the end (delta: -5.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:16:12,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.29ms. Allocated memory is still 121.6MB. Free memory was 85.7MB in the beginning and 83.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:16:12,548 INFO L158 Benchmark]: Boogie Preprocessor took 38.76ms. Allocated memory is still 121.6MB. Free memory was 83.7MB in the beginning and 82.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:16:12,548 INFO L158 Benchmark]: RCFGBuilder took 402.46ms. Allocated memory is still 121.6MB. Free memory was 82.0MB in the beginning and 69.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 20:16:12,548 INFO L158 Benchmark]: TraceAbstraction took 14614.08ms. Allocated memory was 121.6MB in the beginning and 211.8MB in the end (delta: 90.2MB). Free memory was 68.4MB in the beginning and 179.0MB in the end (delta: -110.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:16:12,549 INFO L158 Benchmark]: Witness Printer took 62.43ms. Allocated memory is still 211.8MB. Free memory was 179.0MB in the beginning and 175.8MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:16:12,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 538.62ms. Allocated memory is still 121.6MB. Free memory was 80.8MB in the beginning and 85.7MB in the end (delta: -5.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.29ms. Allocated memory is still 121.6MB. Free memory was 85.7MB in the beginning and 83.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.76ms. Allocated memory is still 121.6MB. Free memory was 83.7MB in the beginning and 82.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 402.46ms. Allocated memory is still 121.6MB. Free memory was 82.0MB in the beginning and 69.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 14614.08ms. Allocated memory was 121.6MB in the beginning and 211.8MB in the end (delta: 90.2MB). Free memory was 68.4MB in the beginning and 179.0MB in the end (delta: -110.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 62.43ms. Allocated memory is still 211.8MB. Free memory was 179.0MB in the beginning and 175.8MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.4s, OverallIterations: 16, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1171 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1171 mSDsluCounter, 880 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 89 IncrementalHoareTripleChecker+Unchecked, 696 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1232 IncrementalHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 184 mSDtfsCounter, 1232 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 713 GetRequests, 452 SyntacticMatches, 11 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=688occurred in iteration=13, InterpolantAutomatonStates: 178, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 1568 NumberOfCodeBlocks, 1498 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1703 ConstructedInterpolants, 4 QuantifiedInterpolants, 11362 SizeOfPredicates, 38 NumberOfNonLiveVariables, 601 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 25 InterpolantComputations, 13 PerfectInterpolantSequences, 2787/3507 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:16:12,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5540ff51-a6a6-4301-8943-be0822bed581/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE