./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a --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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- 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-b5237d8 [2022-11-21 17:28:42,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:28:42,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:28:42,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:28:42,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:28:42,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:28:42,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:28:42,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:28:42,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:28:42,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:28:42,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:28:42,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:28:42,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:28:42,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:28:42,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:28:42,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:28:42,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:28:42,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:28:42,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:28:42,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:28:42,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:28:42,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:28:42,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:28:42,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:28:42,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:28:42,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:28:42,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:28:42,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:28:42,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:28:42,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:28:42,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:28:42,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:28:42,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:28:42,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:28:42,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:28:42,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:28:42,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:28:42,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:28:42,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:28:42,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:28:42,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:28:42,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:28:42,884 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:28:42,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:28:42,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:28:42,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:28:42,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:28:42,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:28:42,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:28:42,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:28:42,887 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:28:42,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:28:42,888 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:28:42,888 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:28:42,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:28:42,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:28:42,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:28:42,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:28:42,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:28:42,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:28:42,890 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:28:42,890 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:28:42,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:28:42,891 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:28:42,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:28:42,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:28:42,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:28:42,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:28:42,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:28:42,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:28:42,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:28:42,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:28:42,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:28:42,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:28:42,894 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:28:42,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:28:42,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:28:42,895 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_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2022-11-21 17:28:43,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:28:43,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:28:43,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:28:43,198 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:28:43,198 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:28:43,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-21 17:28:46,323 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:28:46,630 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:28:46,631 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-21 17:28:46,649 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/data/b95ddfffb/1847d3ac191b4a72bdea007d7aba1d9b/FLAG24936da0a [2022-11-21 17:28:46,669 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/data/b95ddfffb/1847d3ac191b4a72bdea007d7aba1d9b [2022-11-21 17:28:46,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:28:46,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:28:46,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:28:46,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:28:46,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:28:46,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:28:46" (1/1) ... [2022-11-21 17:28:46,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc141e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:46, skipping insertion in model container [2022-11-21 17:28:46,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:28:46" (1/1) ... [2022-11-21 17:28:46,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:28:46,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:28:47,207 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-21 17:28:47,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:28:47,221 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:28:47,296 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-21 17:28:47,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:28:47,346 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:28:47,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47 WrapperNode [2022-11-21 17:28:47,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:28:47,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:28:47,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:28:47,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:28:47,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47" (1/1) ... [2022-11-21 17:28:47,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47" (1/1) ... [2022-11-21 17:28:47,416 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-21 17:28:47,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:28:47,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:28:47,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:28:47,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:28:47,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47" (1/1) ... [2022-11-21 17:28:47,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47" (1/1) ... [2022-11-21 17:28:47,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47" (1/1) ... [2022-11-21 17:28:47,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47" (1/1) ... [2022-11-21 17:28:47,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47" (1/1) ... [2022-11-21 17:28:47,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47" (1/1) ... [2022-11-21 17:28:47,463 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47" (1/1) ... [2022-11-21 17:28:47,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47" (1/1) ... [2022-11-21 17:28:47,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:28:47,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:28:47,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:28:47,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:28:47,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47" (1/1) ... [2022-11-21 17:28:47,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:28:47,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:28:47,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:28:47,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:28:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-21 17:28:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-21 17:28:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-21 17:28:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-21 17:28:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:28:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 17:28:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:28:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:28:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:28:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:28:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 17:28:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:28:47,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:28:47,581 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:28:47,800 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:28:47,802 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:28:48,055 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:28:48,077 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:28:48,077 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 17:28:48,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:28:48 BoogieIcfgContainer [2022-11-21 17:28:48,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:28:48,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:28:48,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:28:48,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:28:48,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:28:46" (1/3) ... [2022-11-21 17:28:48,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c82642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:28:48, skipping insertion in model container [2022-11-21 17:28:48,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:28:47" (2/3) ... [2022-11-21 17:28:48,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c82642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:28:48, skipping insertion in model container [2022-11-21 17:28:48,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:28:48" (3/3) ... [2022-11-21 17:28:48,090 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2022-11-21 17:28:48,099 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:28:48,110 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:28:48,110 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-21 17:28:48,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:28:48,167 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 17:28:48,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 81 transitions, 172 flow [2022-11-21 17:28:48,250 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-11-21 17:28:48,251 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:28:48,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 5/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-11-21 17:28:48,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 81 transitions, 172 flow [2022-11-21 17:28:48,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 164 flow [2022-11-21 17:28:48,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:28:48,281 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;@6c2f32c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:28:48,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-21 17:28:48,293 INFO L130 PetriNetUnfolder]: 1/33 cut-off events. [2022-11-21 17:28:48,294 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:28:48,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:48,295 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] [2022-11-21 17:28:48,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:48,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:48,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1934517197, now seen corresponding path program 1 times [2022-11-21 17:28:48,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:48,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703588461] [2022-11-21 17:28:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:48,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:48,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703588461] [2022-11-21 17:28:48,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703588461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:48,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:48,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:28:48,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370373358] [2022-11-21 17:28:48,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:48,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:28:48,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:48,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:28:48,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:28:48,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-21 17:28:48,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2022-11-21 17:28:48,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:48,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-21 17:28:48,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:48,856 INFO L130 PetriNetUnfolder]: 61/298 cut-off events. [2022-11-21 17:28:48,856 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 17:28:48,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 298 events. 61/298 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1487 event pairs, 14 based on Foata normal form. 45/261 useless extension candidates. Maximal degree in co-relation 373. Up to 49 conditions per place. [2022-11-21 17:28:48,866 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 11 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2022-11-21 17:28:48,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 194 flow [2022-11-21 17:28:48,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:28:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:28:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2022-11-21 17:28:48,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2022-11-21 17:28:48,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2022-11-21 17:28:48,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2022-11-21 17:28:48,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:48,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2022-11-21 17:28:48,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2022-11-21 17:28:48,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 17:28:48,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 17:28:48,908 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 164 flow. Second operand 3 states and 225 transitions. [2022-11-21 17:28:48,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 194 flow [2022-11-21 17:28:48,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:28:48,920 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 176 flow [2022-11-21 17:28:48,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2022-11-21 17:28:48,929 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2022-11-21 17:28:48,930 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 176 flow [2022-11-21 17:28:48,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2022-11-21 17:28:48,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:48,932 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] [2022-11-21 17:28:48,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:28:48,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:48,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:48,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1934517196, now seen corresponding path program 1 times [2022-11-21 17:28:48,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:48,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488524637] [2022-11-21 17:28:48,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:48,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:49,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:49,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488524637] [2022-11-21 17:28:49,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488524637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:49,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:49,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:28:49,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941612796] [2022-11-21 17:28:49,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:49,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:28:49,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:49,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:28:49,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:28:49,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-21 17:28:49,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2022-11-21 17:28:49,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:49,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-21 17:28:49,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:49,177 INFO L130 PetriNetUnfolder]: 51/313 cut-off events. [2022-11-21 17:28:49,178 INFO L131 PetriNetUnfolder]: For 64/78 co-relation queries the response was YES. [2022-11-21 17:28:49,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 313 events. 51/313 cut-off events. For 64/78 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1515 event pairs, 10 based on Foata normal form. 15/282 useless extension candidates. Maximal degree in co-relation 423. Up to 53 conditions per place. [2022-11-21 17:28:49,182 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 11 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2022-11-21 17:28:49,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 218 flow [2022-11-21 17:28:49,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:28:49,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:28:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2022-11-21 17:28:49,186 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.897119341563786 [2022-11-21 17:28:49,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2022-11-21 17:28:49,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2022-11-21 17:28:49,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:49,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2022-11-21 17:28:49,188 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) [2022-11-21 17:28:49,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 17:28:49,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 17:28:49,190 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 176 flow. Second operand 3 states and 218 transitions. [2022-11-21 17:28:49,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 218 flow [2022-11-21 17:28:49,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:28:49,197 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 190 flow [2022-11-21 17:28:49,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2022-11-21 17:28:49,199 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2022-11-21 17:28:49,200 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 190 flow [2022-11-21 17:28:49,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2022-11-21 17:28:49,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:49,201 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] [2022-11-21 17:28:49,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:28:49,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:49,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash 649821270, now seen corresponding path program 1 times [2022-11-21 17:28:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:49,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947803178] [2022-11-21 17:28:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:49,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:49,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:49,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:49,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947803178] [2022-11-21 17:28:49,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947803178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:49,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:49,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:28:49,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637810988] [2022-11-21 17:28:49,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:49,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:28:49,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:49,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:28:49,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:28:49,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 17:28:49,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 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) [2022-11-21 17:28:49,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:49,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 17:28:49,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:49,577 INFO L130 PetriNetUnfolder]: 97/367 cut-off events. [2022-11-21 17:28:49,578 INFO L131 PetriNetUnfolder]: For 155/227 co-relation queries the response was YES. [2022-11-21 17:28:49,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 367 events. 97/367 cut-off events. For 155/227 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1995 event pairs, 37 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 698. Up to 121 conditions per place. [2022-11-21 17:28:49,583 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 37 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2022-11-21 17:28:49,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 100 transitions, 360 flow [2022-11-21 17:28:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:28:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:28:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 341 transitions. [2022-11-21 17:28:49,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8419753086419753 [2022-11-21 17:28:49,590 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 341 transitions. [2022-11-21 17:28:49,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 341 transitions. [2022-11-21 17:28:49,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:49,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 341 transitions. [2022-11-21 17:28:49,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 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) [2022-11-21 17:28:49,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:49,597 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:49,598 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 190 flow. Second operand 5 states and 341 transitions. [2022-11-21 17:28:49,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 100 transitions, 360 flow [2022-11-21 17:28:49,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 100 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:28:49,601 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 218 flow [2022-11-21 17:28:49,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2022-11-21 17:28:49,602 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2022-11-21 17:28:49,602 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 218 flow [2022-11-21 17:28:49,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 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) [2022-11-21 17:28:49,603 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:49,603 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] [2022-11-21 17:28:49,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:28:49,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:49,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:49,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1215262810, now seen corresponding path program 1 times [2022-11-21 17:28:49,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:49,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427610612] [2022-11-21 17:28:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:49,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:49,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427610612] [2022-11-21 17:28:49,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427610612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:49,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:49,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:28:49,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424578484] [2022-11-21 17:28:49,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:49,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:28:49,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:28:49,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:28:49,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-21 17:28:49,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2022-11-21 17:28:49,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:49,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-21 17:28:49,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:49,826 INFO L130 PetriNetUnfolder]: 74/623 cut-off events. [2022-11-21 17:28:49,826 INFO L131 PetriNetUnfolder]: For 106/124 co-relation queries the response was YES. [2022-11-21 17:28:49,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 623 events. 74/623 cut-off events. For 106/124 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4245 event pairs, 34 based on Foata normal form. 1/544 useless extension candidates. Maximal degree in co-relation 886. Up to 84 conditions per place. [2022-11-21 17:28:49,831 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 18 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2022-11-21 17:28:49,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 298 flow [2022-11-21 17:28:49,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:28:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:28:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2022-11-21 17:28:49,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9053497942386831 [2022-11-21 17:28:49,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2022-11-21 17:28:49,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2022-11-21 17:28:49,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:49,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2022-11-21 17:28:49,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2022-11-21 17:28:49,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 17:28:49,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 17:28:49,836 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 218 flow. Second operand 3 states and 220 transitions. [2022-11-21 17:28:49,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 298 flow [2022-11-21 17:28:49,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:28:49,839 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 238 flow [2022-11-21 17:28:49,840 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2022-11-21 17:28:49,841 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2022-11-21 17:28:49,841 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 238 flow [2022-11-21 17:28:49,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2022-11-21 17:28:49,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:49,841 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] [2022-11-21 17:28:49,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:28:49,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:49,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:49,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1215262809, now seen corresponding path program 1 times [2022-11-21 17:28:49,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:49,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323082311] [2022-11-21 17:28:49,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:49,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:49,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:49,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323082311] [2022-11-21 17:28:49,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323082311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:49,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:49,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:28:49,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839722238] [2022-11-21 17:28:49,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:49,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:28:49,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:49,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:28:49,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:28:49,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-21 17:28:49,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2022-11-21 17:28:49,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:49,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-21 17:28:49,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:50,075 INFO L130 PetriNetUnfolder]: 64/602 cut-off events. [2022-11-21 17:28:50,075 INFO L131 PetriNetUnfolder]: For 204/220 co-relation queries the response was YES. [2022-11-21 17:28:50,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 602 events. 64/602 cut-off events. For 204/220 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4048 event pairs, 26 based on Foata normal form. 8/547 useless extension candidates. Maximal degree in co-relation 931. Up to 87 conditions per place. [2022-11-21 17:28:50,080 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 18 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2022-11-21 17:28:50,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 91 transitions, 322 flow [2022-11-21 17:28:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:28:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:28:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2022-11-21 17:28:50,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9012345679012346 [2022-11-21 17:28:50,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2022-11-21 17:28:50,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2022-11-21 17:28:50,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:50,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2022-11-21 17:28:50,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2022-11-21 17:28:50,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 17:28:50,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 17:28:50,085 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 238 flow. Second operand 3 states and 219 transitions. [2022-11-21 17:28:50,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 91 transitions, 322 flow [2022-11-21 17:28:50,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:28:50,094 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 252 flow [2022-11-21 17:28:50,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2022-11-21 17:28:50,098 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2022-11-21 17:28:50,098 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 252 flow [2022-11-21 17:28:50,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2022-11-21 17:28:50,099 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:50,099 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:50,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:28:50,099 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:50,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:50,101 INFO L85 PathProgramCache]: Analyzing trace with hash 363553065, now seen corresponding path program 1 times [2022-11-21 17:28:50,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:50,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830722583] [2022-11-21 17:28:50,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:50,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:50,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:50,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830722583] [2022-11-21 17:28:50,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830722583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:50,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:50,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:28:50,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069042215] [2022-11-21 17:28:50,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:50,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:28:50,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:50,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:28:50,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:28:50,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 17:28:50,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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) [2022-11-21 17:28:50,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:50,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 17:28:50,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:50,429 INFO L130 PetriNetUnfolder]: 79/385 cut-off events. [2022-11-21 17:28:50,429 INFO L131 PetriNetUnfolder]: For 227/317 co-relation queries the response was YES. [2022-11-21 17:28:50,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 385 events. 79/385 cut-off events. For 227/317 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2288 event pairs, 34 based on Foata normal form. 9/345 useless extension candidates. Maximal degree in co-relation 850. Up to 158 conditions per place. [2022-11-21 17:28:50,434 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 36 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2022-11-21 17:28:50,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 102 transitions, 412 flow [2022-11-21 17:28:50,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:28:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:28:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2022-11-21 17:28:50,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8345679012345679 [2022-11-21 17:28:50,436 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2022-11-21 17:28:50,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2022-11-21 17:28:50,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:50,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2022-11-21 17:28:50,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 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) [2022-11-21 17:28:50,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:50,441 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:50,441 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 252 flow. Second operand 5 states and 338 transitions. [2022-11-21 17:28:50,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 102 transitions, 412 flow [2022-11-21 17:28:50,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:28:50,446 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 280 flow [2022-11-21 17:28:50,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2022-11-21 17:28:50,449 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2022-11-21 17:28:50,450 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 280 flow [2022-11-21 17:28:50,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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) [2022-11-21 17:28:50,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:50,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:50,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:28:50,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:50,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:50,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1964963806, now seen corresponding path program 1 times [2022-11-21 17:28:50,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:50,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002820527] [2022-11-21 17:28:50,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:50,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:28:50,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:50,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002820527] [2022-11-21 17:28:50,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002820527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:50,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:50,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:28:50,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072136390] [2022-11-21 17:28:50,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:50,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:28:50,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:50,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:28:50,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:28:50,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 17:28:50,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 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) [2022-11-21 17:28:50,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:50,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 17:28:50,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:50,672 INFO L130 PetriNetUnfolder]: 90/419 cut-off events. [2022-11-21 17:28:50,672 INFO L131 PetriNetUnfolder]: For 228/326 co-relation queries the response was YES. [2022-11-21 17:28:50,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 419 events. 90/419 cut-off events. For 228/326 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2529 event pairs, 13 based on Foata normal form. 28/423 useless extension candidates. Maximal degree in co-relation 987. Up to 93 conditions per place. [2022-11-21 17:28:50,677 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 29 selfloop transitions, 8 changer transitions 0/99 dead transitions. [2022-11-21 17:28:50,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 412 flow [2022-11-21 17:28:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:28:50,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:28:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 331 transitions. [2022-11-21 17:28:50,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.817283950617284 [2022-11-21 17:28:50,680 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 331 transitions. [2022-11-21 17:28:50,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 331 transitions. [2022-11-21 17:28:50,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:50,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 331 transitions. [2022-11-21 17:28:50,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.2) internal successors, (331), 5 states have internal predecessors, (331), 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) [2022-11-21 17:28:50,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:50,683 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:50,683 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 280 flow. Second operand 5 states and 331 transitions. [2022-11-21 17:28:50,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 412 flow [2022-11-21 17:28:50,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:28:50,689 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 298 flow [2022-11-21 17:28:50,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2022-11-21 17:28:50,690 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 21 predicate places. [2022-11-21 17:28:50,691 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 298 flow [2022-11-21 17:28:50,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 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) [2022-11-21 17:28:50,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:50,691 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:50,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:28:50,692 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:50,693 INFO L85 PathProgramCache]: Analyzing trace with hash -317074780, now seen corresponding path program 1 times [2022-11-21 17:28:50,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:50,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66971724] [2022-11-21 17:28:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:50,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:50,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66971724] [2022-11-21 17:28:50,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66971724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:50,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:50,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:28:50,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538579064] [2022-11-21 17:28:50,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:50,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:28:50,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:50,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:28:50,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:28:50,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 17:28:50,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 298 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) [2022-11-21 17:28:50,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:50,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 17:28:50,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:51,024 INFO L130 PetriNetUnfolder]: 184/1024 cut-off events. [2022-11-21 17:28:51,025 INFO L131 PetriNetUnfolder]: For 637/704 co-relation queries the response was YES. [2022-11-21 17:28:51,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 1024 events. 184/1024 cut-off events. For 637/704 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8159 event pairs, 32 based on Foata normal form. 37/1047 useless extension candidates. Maximal degree in co-relation 2224. Up to 144 conditions per place. [2022-11-21 17:28:51,035 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 28 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2022-11-21 17:28:51,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 106 transitions, 456 flow [2022-11-21 17:28:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:28:51,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:28:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 357 transitions. [2022-11-21 17:28:51,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8814814814814815 [2022-11-21 17:28:51,037 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 357 transitions. [2022-11-21 17:28:51,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 357 transitions. [2022-11-21 17:28:51,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:51,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 357 transitions. [2022-11-21 17:28:51,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 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) [2022-11-21 17:28:51,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:51,040 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:51,040 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 298 flow. Second operand 5 states and 357 transitions. [2022-11-21 17:28:51,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 106 transitions, 456 flow [2022-11-21 17:28:51,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 106 transitions, 444 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:28:51,046 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 380 flow [2022-11-21 17:28:51,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=106, PETRI_TRANSITIONS=95} [2022-11-21 17:28:51,049 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2022-11-21 17:28:51,049 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 380 flow [2022-11-21 17:28:51,049 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) [2022-11-21 17:28:51,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:51,049 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:51,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:28:51,050 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:51,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:51,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1458265281, now seen corresponding path program 1 times [2022-11-21 17:28:51,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:51,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218809966] [2022-11-21 17:28:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:51,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:51,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:51,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218809966] [2022-11-21 17:28:51,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218809966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:51,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:51,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:28:51,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312577405] [2022-11-21 17:28:51,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:51,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:28:51,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:51,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:28:51,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:28:51,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 17:28:51,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 95 transitions, 380 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) [2022-11-21 17:28:51,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:51,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 17:28:51,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:51,329 INFO L130 PetriNetUnfolder]: 233/1132 cut-off events. [2022-11-21 17:28:51,330 INFO L131 PetriNetUnfolder]: For 1220/1309 co-relation queries the response was YES. [2022-11-21 17:28:51,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 1132 events. 233/1132 cut-off events. For 1220/1309 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8944 event pairs, 15 based on Foata normal form. 55/1177 useless extension candidates. Maximal degree in co-relation 2629. Up to 206 conditions per place. [2022-11-21 17:28:51,342 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 30 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2022-11-21 17:28:51,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 112 transitions, 557 flow [2022-11-21 17:28:51,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:28:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:28:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2022-11-21 17:28:51,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740740740740741 [2022-11-21 17:28:51,347 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 354 transitions. [2022-11-21 17:28:51,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 354 transitions. [2022-11-21 17:28:51,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:51,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 354 transitions. [2022-11-21 17:28:51,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.8) internal successors, (354), 5 states have internal predecessors, (354), 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) [2022-11-21 17:28:51,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:51,350 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:51,351 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 380 flow. Second operand 5 states and 354 transitions. [2022-11-21 17:28:51,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 112 transitions, 557 flow [2022-11-21 17:28:51,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 112 transitions, 555 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-21 17:28:51,359 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 450 flow [2022-11-21 17:28:51,359 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2022-11-21 17:28:51,360 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 31 predicate places. [2022-11-21 17:28:51,361 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 450 flow [2022-11-21 17:28:51,361 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) [2022-11-21 17:28:51,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:51,361 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:51,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:28:51,362 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:51,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1481320492, now seen corresponding path program 1 times [2022-11-21 17:28:51,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:51,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189245466] [2022-11-21 17:28:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:51,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:51,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:51,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189245466] [2022-11-21 17:28:51,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189245466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:51,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:51,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:28:51,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694147329] [2022-11-21 17:28:51,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:51,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:28:51,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:51,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:28:51,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:28:51,436 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 17:28:51,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 450 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) [2022-11-21 17:28:51,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:51,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 17:28:51,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:51,600 INFO L130 PetriNetUnfolder]: 132/814 cut-off events. [2022-11-21 17:28:51,601 INFO L131 PetriNetUnfolder]: For 1160/1210 co-relation queries the response was YES. [2022-11-21 17:28:51,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 814 events. 132/814 cut-off events. For 1160/1210 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5894 event pairs, 83 based on Foata normal form. 32/834 useless extension candidates. Maximal degree in co-relation 1879. Up to 231 conditions per place. [2022-11-21 17:28:51,609 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 21 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2022-11-21 17:28:51,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 433 flow [2022-11-21 17:28:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:28:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:28:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2022-11-21 17:28:51,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8395061728395061 [2022-11-21 17:28:51,611 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2022-11-21 17:28:51,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2022-11-21 17:28:51,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:51,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2022-11-21 17:28:51,613 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) [2022-11-21 17:28:51,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 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) [2022-11-21 17:28:51,614 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 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) [2022-11-21 17:28:51,614 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 450 flow. Second operand 4 states and 272 transitions. [2022-11-21 17:28:51,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 433 flow [2022-11-21 17:28:51,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 92 transitions, 406 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-11-21 17:28:51,621 INFO L231 Difference]: Finished difference. Result has 109 places, 92 transitions, 364 flow [2022-11-21 17:28:51,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=109, PETRI_TRANSITIONS=92} [2022-11-21 17:28:51,623 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 28 predicate places. [2022-11-21 17:28:51,623 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 92 transitions, 364 flow [2022-11-21 17:28:51,623 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) [2022-11-21 17:28:51,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:51,624 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:51,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:28:51,624 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:51,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1481320491, now seen corresponding path program 1 times [2022-11-21 17:28:51,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:51,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394087675] [2022-11-21 17:28:51,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:51,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:51,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:51,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394087675] [2022-11-21 17:28:51,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394087675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:51,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:51,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:28:51,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322592120] [2022-11-21 17:28:51,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:51,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:28:51,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:51,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:28:51,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:28:51,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 17:28:51,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 92 transitions, 364 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) [2022-11-21 17:28:51,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:51,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 17:28:51,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:51,863 INFO L130 PetriNetUnfolder]: 152/901 cut-off events. [2022-11-21 17:28:51,864 INFO L131 PetriNetUnfolder]: For 687/699 co-relation queries the response was YES. [2022-11-21 17:28:51,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 901 events. 152/901 cut-off events. For 687/699 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6605 event pairs, 6 based on Foata normal form. 21/921 useless extension candidates. Maximal degree in co-relation 1988. Up to 199 conditions per place. [2022-11-21 17:28:51,873 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 30 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2022-11-21 17:28:51,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 104 transitions, 478 flow [2022-11-21 17:28:51,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:28:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:28:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 351 transitions. [2022-11-21 17:28:51,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-21 17:28:51,876 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 351 transitions. [2022-11-21 17:28:51,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 351 transitions. [2022-11-21 17:28:51,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:51,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 351 transitions. [2022-11-21 17:28:51,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 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) [2022-11-21 17:28:51,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:51,879 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:51,879 INFO L175 Difference]: Start difference. First operand has 109 places, 92 transitions, 364 flow. Second operand 5 states and 351 transitions. [2022-11-21 17:28:51,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 104 transitions, 478 flow [2022-11-21 17:28:51,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 104 transitions, 475 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:28:51,884 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 387 flow [2022-11-21 17:28:51,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=113, PETRI_TRANSITIONS=93} [2022-11-21 17:28:51,885 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2022-11-21 17:28:51,886 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 387 flow [2022-11-21 17:28:51,886 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) [2022-11-21 17:28:51,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:51,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:51,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:28:51,887 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:51,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:51,887 INFO L85 PathProgramCache]: Analyzing trace with hash 784336079, now seen corresponding path program 1 times [2022-11-21 17:28:51,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:51,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127538728] [2022-11-21 17:28:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:51,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:51,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:51,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127538728] [2022-11-21 17:28:51,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127538728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:28:51,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985225183] [2022-11-21 17:28:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:51,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:28:51,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:28:51,968 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:28:51,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:28:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:52,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:28:52,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:52,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:28:52,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985225183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:52,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:28:52,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:28:52,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188655622] [2022-11-21 17:28:52,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:52,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:28:52,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:52,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:28:52,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:28:52,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 17:28:52,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 93 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 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) [2022-11-21 17:28:52,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:52,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 17:28:52,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:52,376 INFO L130 PetriNetUnfolder]: 96/447 cut-off events. [2022-11-21 17:28:52,376 INFO L131 PetriNetUnfolder]: For 597/630 co-relation queries the response was YES. [2022-11-21 17:28:52,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 447 events. 96/447 cut-off events. For 597/630 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2683 event pairs, 5 based on Foata normal form. 23/451 useless extension candidates. Maximal degree in co-relation 1221. Up to 88 conditions per place. [2022-11-21 17:28:52,383 INFO L137 encePairwiseOnDemand]: 76/81 looper letters, 41 selfloop transitions, 6 changer transitions 0/113 dead transitions. [2022-11-21 17:28:52,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 618 flow [2022-11-21 17:28:52,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:28:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:28:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 457 transitions. [2022-11-21 17:28:52,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8059964726631393 [2022-11-21 17:28:52,386 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 457 transitions. [2022-11-21 17:28:52,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 457 transitions. [2022-11-21 17:28:52,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:52,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 457 transitions. [2022-11-21 17:28:52,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 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) [2022-11-21 17:28:52,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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) [2022-11-21 17:28:52,390 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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) [2022-11-21 17:28:52,390 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 387 flow. Second operand 7 states and 457 transitions. [2022-11-21 17:28:52,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 618 flow [2022-11-21 17:28:52,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 596 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-21 17:28:52,395 INFO L231 Difference]: Finished difference. Result has 116 places, 92 transitions, 385 flow [2022-11-21 17:28:52,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=116, PETRI_TRANSITIONS=92} [2022-11-21 17:28:52,396 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 35 predicate places. [2022-11-21 17:28:52,397 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 92 transitions, 385 flow [2022-11-21 17:28:52,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 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) [2022-11-21 17:28:52,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:52,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:52,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:28:52,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:28:52,609 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:52,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:52,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1998744924, now seen corresponding path program 1 times [2022-11-21 17:28:52,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:52,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571603374] [2022-11-21 17:28:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:52,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:28:52,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:52,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571603374] [2022-11-21 17:28:52,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571603374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:52,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:52,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:28:52,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33930094] [2022-11-21 17:28:52,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:52,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:28:52,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:28:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:28:52,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 17:28:52,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 92 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 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) [2022-11-21 17:28:52,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:52,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 17:28:52,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:52,778 INFO L130 PetriNetUnfolder]: 103/426 cut-off events. [2022-11-21 17:28:52,778 INFO L131 PetriNetUnfolder]: For 633/676 co-relation queries the response was YES. [2022-11-21 17:28:52,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 426 events. 103/426 cut-off events. For 633/676 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2309 event pairs, 9 based on Foata normal form. 28/439 useless extension candidates. Maximal degree in co-relation 1207. Up to 98 conditions per place. [2022-11-21 17:28:52,783 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 29 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2022-11-21 17:28:52,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 102 transitions, 535 flow [2022-11-21 17:28:52,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:28:52,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:28:52,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 323 transitions. [2022-11-21 17:28:52,786 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7975308641975308 [2022-11-21 17:28:52,786 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 323 transitions. [2022-11-21 17:28:52,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 323 transitions. [2022-11-21 17:28:52,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:52,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 323 transitions. [2022-11-21 17:28:52,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 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) [2022-11-21 17:28:52,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:52,789 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 17:28:52,789 INFO L175 Difference]: Start difference. First operand has 116 places, 92 transitions, 385 flow. Second operand 5 states and 323 transitions. [2022-11-21 17:28:52,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 102 transitions, 535 flow [2022-11-21 17:28:52,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 102 transitions, 524 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 17:28:52,794 INFO L231 Difference]: Finished difference. Result has 115 places, 92 transitions, 394 flow [2022-11-21 17:28:52,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=115, PETRI_TRANSITIONS=92} [2022-11-21 17:28:52,796 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 34 predicate places. [2022-11-21 17:28:52,796 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 92 transitions, 394 flow [2022-11-21 17:28:52,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 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) [2022-11-21 17:28:52,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:52,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:52,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:28:52,797 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:52,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:52,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1831550754, now seen corresponding path program 1 times [2022-11-21 17:28:52,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:52,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787975322] [2022-11-21 17:28:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:52,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:52,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:52,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787975322] [2022-11-21 17:28:52,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787975322] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:28:52,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333603114] [2022-11-21 17:28:52,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:52,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:28:52,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:28:52,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:28:52,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:28:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:52,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:28:52,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:53,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:28:53,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333603114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:53,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:28:53,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:28:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613167332] [2022-11-21 17:28:53,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:53,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:28:53,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:28:53,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:28:53,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 17:28:53,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 92 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 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) [2022-11-21 17:28:53,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:53,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 17:28:53,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:53,240 INFO L130 PetriNetUnfolder]: 82/385 cut-off events. [2022-11-21 17:28:53,240 INFO L131 PetriNetUnfolder]: For 573/599 co-relation queries the response was YES. [2022-11-21 17:28:53,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 385 events. 82/385 cut-off events. For 573/599 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2095 event pairs, 3 based on Foata normal form. 20/395 useless extension candidates. Maximal degree in co-relation 1127. Up to 79 conditions per place. [2022-11-21 17:28:53,246 INFO L137 encePairwiseOnDemand]: 76/81 looper letters, 36 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2022-11-21 17:28:53,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 107 transitions, 585 flow [2022-11-21 17:28:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:28:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:28:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 452 transitions. [2022-11-21 17:28:53,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7971781305114638 [2022-11-21 17:28:53,248 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 452 transitions. [2022-11-21 17:28:53,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 452 transitions. [2022-11-21 17:28:53,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:53,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 452 transitions. [2022-11-21 17:28:53,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 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) [2022-11-21 17:28:53,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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) [2022-11-21 17:28:53,252 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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) [2022-11-21 17:28:53,252 INFO L175 Difference]: Start difference. First operand has 115 places, 92 transitions, 394 flow. Second operand 7 states and 452 transitions. [2022-11-21 17:28:53,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 107 transitions, 585 flow [2022-11-21 17:28:53,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 107 transitions, 573 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:28:53,258 INFO L231 Difference]: Finished difference. Result has 117 places, 91 transitions, 390 flow [2022-11-21 17:28:53,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=117, PETRI_TRANSITIONS=91} [2022-11-21 17:28:53,259 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 36 predicate places. [2022-11-21 17:28:53,259 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 91 transitions, 390 flow [2022-11-21 17:28:53,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 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) [2022-11-21 17:28:53,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:53,260 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:53,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:28:53,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 17:28:53,466 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:53,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:53,466 INFO L85 PathProgramCache]: Analyzing trace with hash 338958765, now seen corresponding path program 1 times [2022-11-21 17:28:53,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:53,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924952606] [2022-11-21 17:28:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:53,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:53,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:53,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924952606] [2022-11-21 17:28:53,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924952606] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:28:53,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194948386] [2022-11-21 17:28:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:53,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:28:53,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:28:53,550 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:28:53,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:28:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:53,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:28:53,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:53,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:53,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194948386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:28:53,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:28:53,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-21 17:28:53,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084361116] [2022-11-21 17:28:53,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:28:53,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:28:53,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:28:53,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:28:53,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 17:28:53,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 91 transitions, 390 flow. Second operand has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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) [2022-11-21 17:28:53,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:53,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 17:28:53,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:54,038 INFO L130 PetriNetUnfolder]: 148/906 cut-off events. [2022-11-21 17:28:54,038 INFO L131 PetriNetUnfolder]: For 1165/1191 co-relation queries the response was YES. [2022-11-21 17:28:54,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2195 conditions, 906 events. 148/906 cut-off events. For 1165/1191 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5889 event pairs, 6 based on Foata normal form. 68/968 useless extension candidates. Maximal degree in co-relation 2154. Up to 77 conditions per place. [2022-11-21 17:28:54,048 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 33 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2022-11-21 17:28:54,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 113 transitions, 582 flow [2022-11-21 17:28:54,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:28:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:28:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 557 transitions. [2022-11-21 17:28:54,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595679012345679 [2022-11-21 17:28:54,051 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 557 transitions. [2022-11-21 17:28:54,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 557 transitions. [2022-11-21 17:28:54,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:54,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 557 transitions. [2022-11-21 17:28:54,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.625) internal successors, (557), 8 states have internal predecessors, (557), 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) [2022-11-21 17:28:54,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 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) [2022-11-21 17:28:54,056 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 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) [2022-11-21 17:28:54,056 INFO L175 Difference]: Start difference. First operand has 117 places, 91 transitions, 390 flow. Second operand 8 states and 557 transitions. [2022-11-21 17:28:54,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 113 transitions, 582 flow [2022-11-21 17:28:54,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 113 transitions, 569 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-21 17:28:54,063 INFO L231 Difference]: Finished difference. Result has 124 places, 97 transitions, 497 flow [2022-11-21 17:28:54,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=497, PETRI_PLACES=124, PETRI_TRANSITIONS=97} [2022-11-21 17:28:54,065 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 43 predicate places. [2022-11-21 17:28:54,065 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 97 transitions, 497 flow [2022-11-21 17:28:54,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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) [2022-11-21 17:28:54,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:54,066 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:54,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:28:54,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:28:54,272 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash -147926171, now seen corresponding path program 1 times [2022-11-21 17:28:54,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:54,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703745098] [2022-11-21 17:28:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:54,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:54,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:54,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703745098] [2022-11-21 17:28:54,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703745098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:28:54,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089813797] [2022-11-21 17:28:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:54,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:28:54,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:28:54,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:28:54,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:28:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:54,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:28:54,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:54,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:54,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089813797] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:28:54,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:28:54,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-21 17:28:54,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890129398] [2022-11-21 17:28:54,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:28:54,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:28:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:28:54,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:28:54,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 17:28:54,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 97 transitions, 497 flow. Second operand has 12 states, 12 states have (on average 66.5) internal successors, (798), 12 states have internal predecessors, (798), 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) [2022-11-21 17:28:54,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:54,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 17:28:54,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:55,103 INFO L130 PetriNetUnfolder]: 154/1070 cut-off events. [2022-11-21 17:28:55,104 INFO L131 PetriNetUnfolder]: For 2165/2195 co-relation queries the response was YES. [2022-11-21 17:28:55,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1070 events. 154/1070 cut-off events. For 2165/2195 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6685 event pairs, 0 based on Foata normal form. 72/1141 useless extension candidates. Maximal degree in co-relation 2697. Up to 91 conditions per place. [2022-11-21 17:28:55,116 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 43 selfloop transitions, 18 changer transitions 0/128 dead transitions. [2022-11-21 17:28:55,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 764 flow [2022-11-21 17:28:55,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 17:28:55,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 17:28:55,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 904 transitions. [2022-11-21 17:28:55,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8584995251661919 [2022-11-21 17:28:55,119 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 904 transitions. [2022-11-21 17:28:55,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 904 transitions. [2022-11-21 17:28:55,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:55,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 904 transitions. [2022-11-21 17:28:55,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.53846153846153) internal successors, (904), 13 states have internal predecessors, (904), 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) [2022-11-21 17:28:55,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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) [2022-11-21 17:28:55,126 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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) [2022-11-21 17:28:55,127 INFO L175 Difference]: Start difference. First operand has 124 places, 97 transitions, 497 flow. Second operand 13 states and 904 transitions. [2022-11-21 17:28:55,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 764 flow [2022-11-21 17:28:55,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 711 flow, removed 21 selfloop flow, removed 3 redundant places. [2022-11-21 17:28:55,138 INFO L231 Difference]: Finished difference. Result has 139 places, 99 transitions, 543 flow [2022-11-21 17:28:55,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=543, PETRI_PLACES=139, PETRI_TRANSITIONS=99} [2022-11-21 17:28:55,140 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 58 predicate places. [2022-11-21 17:28:55,140 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 99 transitions, 543 flow [2022-11-21 17:28:55,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 66.5) internal successors, (798), 12 states have internal predecessors, (798), 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) [2022-11-21 17:28:55,141 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:55,141 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:55,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:28:55,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 17:28:55,347 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:55,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:55,347 INFO L85 PathProgramCache]: Analyzing trace with hash -2001455967, now seen corresponding path program 1 times [2022-11-21 17:28:55,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:55,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248940632] [2022-11-21 17:28:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:55,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:55,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:55,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248940632] [2022-11-21 17:28:55,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248940632] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:28:55,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221746907] [2022-11-21 17:28:55,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:55,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:28:55,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:28:55,499 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:28:55,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:28:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:55,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:28:55,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:55,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:55,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221746907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:28:55,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:28:55,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-21 17:28:55,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95652606] [2022-11-21 17:28:55,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:28:55,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 17:28:55,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 17:28:55,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:28:55,887 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 17:28:55,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 99 transitions, 543 flow. Second operand has 16 states, 16 states have (on average 66.3125) internal successors, (1061), 16 states have internal predecessors, (1061), 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) [2022-11-21 17:28:55,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:55,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 17:28:55,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:56,373 INFO L130 PetriNetUnfolder]: 203/1426 cut-off events. [2022-11-21 17:28:56,373 INFO L131 PetriNetUnfolder]: For 3330/3362 co-relation queries the response was YES. [2022-11-21 17:28:56,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3663 conditions, 1426 events. 203/1426 cut-off events. For 3330/3362 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8892 event pairs, 6 based on Foata normal form. 50/1470 useless extension candidates. Maximal degree in co-relation 3610. Up to 118 conditions per place. [2022-11-21 17:28:56,400 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 53 selfloop transitions, 25 changer transitions 0/145 dead transitions. [2022-11-21 17:28:56,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 145 transitions, 944 flow [2022-11-21 17:28:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 17:28:56,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 17:28:56,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1109 transitions. [2022-11-21 17:28:56,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8557098765432098 [2022-11-21 17:28:56,405 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1109 transitions. [2022-11-21 17:28:56,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1109 transitions. [2022-11-21 17:28:56,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:56,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1109 transitions. [2022-11-21 17:28:56,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 69.3125) internal successors, (1109), 16 states have internal predecessors, (1109), 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) [2022-11-21 17:28:56,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 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) [2022-11-21 17:28:56,413 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 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) [2022-11-21 17:28:56,413 INFO L175 Difference]: Start difference. First operand has 139 places, 99 transitions, 543 flow. Second operand 16 states and 1109 transitions. [2022-11-21 17:28:56,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 145 transitions, 944 flow [2022-11-21 17:28:56,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 145 transitions, 929 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-21 17:28:56,427 INFO L231 Difference]: Finished difference. Result has 157 places, 107 transitions, 694 flow [2022-11-21 17:28:56,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=694, PETRI_PLACES=157, PETRI_TRANSITIONS=107} [2022-11-21 17:28:56,428 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 76 predicate places. [2022-11-21 17:28:56,428 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 107 transitions, 694 flow [2022-11-21 17:28:56,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.3125) internal successors, (1061), 16 states have internal predecessors, (1061), 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) [2022-11-21 17:28:56,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:56,429 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:56,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:28:56,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 17:28:56,635 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:56,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:56,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1182725167, now seen corresponding path program 2 times [2022-11-21 17:28:56,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:56,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751192416] [2022-11-21 17:28:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:56,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:57,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:57,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751192416] [2022-11-21 17:28:57,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751192416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:28:57,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543468690] [2022-11-21 17:28:57,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:28:57,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:28:57,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:28:57,050 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:28:57,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 17:28:57,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:28:57,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:28:57,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:28:57,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:57,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:57,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543468690] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:28:57,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:28:57,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-11-21 17:28:57,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131763584] [2022-11-21 17:28:57,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:28:57,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-21 17:28:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-21 17:28:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-11-21 17:28:57,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 17:28:57,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 107 transitions, 694 flow. Second operand has 28 states, 28 states have (on average 66.21428571428571) internal successors, (1854), 28 states have internal predecessors, (1854), 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) [2022-11-21 17:28:57,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:28:57,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 17:28:57,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:28:58,705 INFO L130 PetriNetUnfolder]: 311/2178 cut-off events. [2022-11-21 17:28:58,706 INFO L131 PetriNetUnfolder]: For 7111/7123 co-relation queries the response was YES. [2022-11-21 17:28:58,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5743 conditions, 2178 events. 311/2178 cut-off events. For 7111/7123 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 13086 event pairs, 3 based on Foata normal form. 78/2252 useless extension candidates. Maximal degree in co-relation 5682. Up to 178 conditions per place. [2022-11-21 17:28:58,731 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 91 selfloop transitions, 42 changer transitions 0/200 dead transitions. [2022-11-21 17:28:58,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 200 transitions, 1489 flow [2022-11-21 17:28:58,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-21 17:28:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-21 17:28:58,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2013 transitions. [2022-11-21 17:28:58,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8569604086845466 [2022-11-21 17:28:58,736 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2013 transitions. [2022-11-21 17:28:58,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2013 transitions. [2022-11-21 17:28:58,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:28:58,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2013 transitions. [2022-11-21 17:28:58,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 69.41379310344827) internal successors, (2013), 29 states have internal predecessors, (2013), 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) [2022-11-21 17:28:58,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 81.0) internal successors, (2430), 30 states have internal predecessors, (2430), 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) [2022-11-21 17:28:58,755 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 81.0) internal successors, (2430), 30 states have internal predecessors, (2430), 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) [2022-11-21 17:28:58,755 INFO L175 Difference]: Start difference. First operand has 157 places, 107 transitions, 694 flow. Second operand 29 states and 2013 transitions. [2022-11-21 17:28:58,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 200 transitions, 1489 flow [2022-11-21 17:28:58,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 200 transitions, 1407 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-21 17:28:58,777 INFO L231 Difference]: Finished difference. Result has 191 places, 123 transitions, 956 flow [2022-11-21 17:28:58,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=956, PETRI_PLACES=191, PETRI_TRANSITIONS=123} [2022-11-21 17:28:58,778 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 110 predicate places. [2022-11-21 17:28:58,778 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 123 transitions, 956 flow [2022-11-21 17:28:58,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 66.21428571428571) internal successors, (1854), 28 states have internal predecessors, (1854), 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) [2022-11-21 17:28:58,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:28:58,779 INFO L209 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-21 17:28:58,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:28:58,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 17:28:58,985 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:28:58,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:58,985 INFO L85 PathProgramCache]: Analyzing trace with hash 315234667, now seen corresponding path program 2 times [2022-11-21 17:28:58,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:58,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228590925] [2022-11-21 17:28:58,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:58,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:59,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:59,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228590925] [2022-11-21 17:28:59,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228590925] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:28:59,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636233199] [2022-11-21 17:28:59,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:28:59,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:28:59,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:28:59,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:28:59,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 17:28:59,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:28:59,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:28:59,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 17:28:59,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:00,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:00,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636233199] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:00,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:00,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-21 17:29:00,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262675207] [2022-11-21 17:29:00,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:00,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-21 17:29:00,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-21 17:29:00,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2022-11-21 17:29:00,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 17:29:00,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 123 transitions, 956 flow. Second operand has 48 states, 48 states have (on average 66.10416666666667) internal successors, (3173), 48 states have internal predecessors, (3173), 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) [2022-11-21 17:29:00,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:29:00,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 17:29:00,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:29:03,576 INFO L130 PetriNetUnfolder]: 523/3666 cut-off events. [2022-11-21 17:29:03,576 INFO L131 PetriNetUnfolder]: For 22107/22141 co-relation queries the response was YES. [2022-11-21 17:29:03,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9704 conditions, 3666 events. 523/3666 cut-off events. For 22107/22141 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 21815 event pairs, 6 based on Foata normal form. 146/3806 useless extension candidates. Maximal degree in co-relation 9630. Up to 310 conditions per place. [2022-11-21 17:29:03,611 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 149 selfloop transitions, 73 changer transitions 0/289 dead transitions. [2022-11-21 17:29:03,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 289 transitions, 2389 flow [2022-11-21 17:29:03,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-21 17:29:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-21 17:29:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3333 transitions. [2022-11-21 17:29:03,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8572530864197531 [2022-11-21 17:29:03,618 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3333 transitions. [2022-11-21 17:29:03,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3333 transitions. [2022-11-21 17:29:03,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:29:03,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3333 transitions. [2022-11-21 17:29:03,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 69.4375) internal successors, (3333), 48 states have internal predecessors, (3333), 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) [2022-11-21 17:29:03,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 81.0) internal successors, (3969), 49 states have internal predecessors, (3969), 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) [2022-11-21 17:29:03,636 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 81.0) internal successors, (3969), 49 states have internal predecessors, (3969), 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) [2022-11-21 17:29:03,636 INFO L175 Difference]: Start difference. First operand has 191 places, 123 transitions, 956 flow. Second operand 48 states and 3333 transitions. [2022-11-21 17:29:03,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 289 transitions, 2389 flow [2022-11-21 17:29:03,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 289 transitions, 2241 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-21 17:29:03,688 INFO L231 Difference]: Finished difference. Result has 249 places, 155 transitions, 1462 flow [2022-11-21 17:29:03,688 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1462, PETRI_PLACES=249, PETRI_TRANSITIONS=155} [2022-11-21 17:29:03,689 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 168 predicate places. [2022-11-21 17:29:03,689 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 155 transitions, 1462 flow [2022-11-21 17:29:03,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 66.10416666666667) internal successors, (3173), 48 states have internal predecessors, (3173), 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) [2022-11-21 17:29:03,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:29:03,691 INFO L209 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:03,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 17:29:03,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:03,897 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:29:03,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:03,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1068848841, now seen corresponding path program 3 times [2022-11-21 17:29:03,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:03,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635549073] [2022-11-21 17:29:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:03,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 0 proven. 3173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:06,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:06,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635549073] [2022-11-21 17:29:06,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635549073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:06,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873977594] [2022-11-21 17:29:06,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:29:06,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:06,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:06,882 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:06,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 17:29:07,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2022-11-21 17:29:07,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:29:07,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 17:29:07,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 3151 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-21 17:29:09,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:29:09,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873977594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:09,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:29:09,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [46] total 90 [2022-11-21 17:29:09,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075962932] [2022-11-21 17:29:09,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:09,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-21 17:29:09,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:09,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-21 17:29:09,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1102, Invalid=6908, Unknown=0, NotChecked=0, Total=8010 [2022-11-21 17:29:09,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 17:29:09,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 155 transitions, 1462 flow. Second operand has 45 states, 45 states have (on average 64.82222222222222) internal successors, (2917), 45 states have internal predecessors, (2917), 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) [2022-11-21 17:29:09,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:29:09,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 17:29:09,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:29:17,671 INFO L130 PetriNetUnfolder]: 6803/17680 cut-off events. [2022-11-21 17:29:17,671 INFO L131 PetriNetUnfolder]: For 95965/95981 co-relation queries the response was YES. [2022-11-21 17:29:17,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72522 conditions, 17680 events. 6803/17680 cut-off events. For 95965/95981 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 153395 event pairs, 2 based on Foata normal form. 91/16923 useless extension candidates. Maximal degree in co-relation 72447. Up to 5886 conditions per place. [2022-11-21 17:29:17,863 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 0 selfloop transitions, 0 changer transitions 1909/1909 dead transitions. [2022-11-21 17:29:17,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 1909 transitions, 26357 flow [2022-11-21 17:29:17,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-21 17:29:17,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-11-21 17:29:17,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4130 transitions. [2022-11-21 17:29:17,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8093278463648834 [2022-11-21 17:29:17,876 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 4130 transitions. [2022-11-21 17:29:17,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 4130 transitions. [2022-11-21 17:29:17,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:29:17,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 4130 transitions. [2022-11-21 17:29:17,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 65.55555555555556) internal successors, (4130), 63 states have internal predecessors, (4130), 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) [2022-11-21 17:29:17,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 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) [2022-11-21 17:29:17,901 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 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) [2022-11-21 17:29:17,902 INFO L175 Difference]: Start difference. First operand has 249 places, 155 transitions, 1462 flow. Second operand 63 states and 4130 transitions. [2022-11-21 17:29:17,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 1909 transitions, 26357 flow [2022-11-21 17:29:18,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 1909 transitions, 17882 flow, removed 62 selfloop flow, removed 74 redundant places. [2022-11-21 17:29:18,607 INFO L231 Difference]: Finished difference. Result has 231 places, 0 transitions, 0 flow [2022-11-21 17:29:18,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=0, PETRI_PLACES=231, PETRI_TRANSITIONS=0} [2022-11-21 17:29:18,609 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 150 predicate places. [2022-11-21 17:29:18,610 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 0 transitions, 0 flow [2022-11-21 17:29:18,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 64.82222222222222) internal successors, (2917), 45 states have internal predecessors, (2917), 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) [2022-11-21 17:29:18,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-21 17:29:18,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-11-21 17:29:18,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-21 17:29:18,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-21 17:29:18,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-21 17:29:18,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-21 17:29:18,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-21 17:29:18,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-21 17:29:18,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-21 17:29:18,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-21 17:29:18,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-21 17:29:18,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-21 17:29:18,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-21 17:29:18,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-21 17:29:18,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-21 17:29:18,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-21 17:29:18,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-21 17:29:18,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-21 17:29:18,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:18,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:18,825 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:18,829 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 17:29:18,829 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:29:18,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:29:18 BasicIcfg [2022-11-21 17:29:18,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:29:18,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:29:18,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:29:18,837 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:29:18,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:28:48" (3/4) ... [2022-11-21 17:29:18,843 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 17:29:18,849 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-21 17:29:18,849 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-21 17:29:18,854 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-21 17:29:18,854 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-21 17:29:18,854 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 17:29:18,855 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 17:29:18,893 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 17:29:18,893 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:29:18,894 INFO L158 Benchmark]: Toolchain (without parser) took 32217.57ms. Allocated memory was 174.1MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 129.0MB in the beginning and 952.4MB in the end (delta: -823.4MB). Peak memory consumption was 431.0MB. Max. memory is 16.1GB. [2022-11-21 17:29:18,894 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 65.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:29:18,897 INFO L158 Benchmark]: CACSL2BoogieTranslator took 665.55ms. Allocated memory is still 174.1MB. Free memory was 128.6MB in the beginning and 109.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-21 17:29:18,897 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.00ms. Allocated memory is still 174.1MB. Free memory was 109.4MB in the beginning and 107.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:29:18,898 INFO L158 Benchmark]: Boogie Preprocessor took 57.81ms. Allocated memory is still 174.1MB. Free memory was 107.6MB in the beginning and 105.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:29:18,898 INFO L158 Benchmark]: RCFGBuilder took 603.34ms. Allocated memory is still 174.1MB. Free memory was 105.9MB in the beginning and 140.2MB in the end (delta: -34.3MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-11-21 17:29:18,898 INFO L158 Benchmark]: TraceAbstraction took 30753.35ms. Allocated memory was 174.1MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 139.2MB in the beginning and 955.6MB in the end (delta: -816.3MB). Peak memory consumption was 609.7MB. Max. memory is 16.1GB. [2022-11-21 17:29:18,899 INFO L158 Benchmark]: Witness Printer took 57.14ms. Allocated memory is still 1.4GB. Free memory was 954.5MB in the beginning and 952.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:29:18,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 65.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 665.55ms. Allocated memory is still 174.1MB. Free memory was 128.6MB in the beginning and 109.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.00ms. Allocated memory is still 174.1MB. Free memory was 109.4MB in the beginning and 107.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.81ms. Allocated memory is still 174.1MB. Free memory was 107.6MB in the beginning and 105.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 603.34ms. Allocated memory is still 174.1MB. Free memory was 105.9MB in the beginning and 140.2MB in the end (delta: -34.3MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 30753.35ms. Allocated memory was 174.1MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 139.2MB in the beginning and 955.6MB in the end (delta: -816.3MB). Peak memory consumption was 609.7MB. Max. memory is 16.1GB. * Witness Printer took 57.14ms. Allocated memory is still 1.4GB. Free memory was 954.5MB in the beginning and 952.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: 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: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: 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 5 procedures, 111 locations, 18 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: 30.6s, OverallIterations: 20, TraceHistogramMax: 23, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 16.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1719 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1719 mSDsluCounter, 243 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 156 mSDsCounter, 119 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2588 IncrementalHoareTripleChecker+Invalid, 2707 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 119 mSolverCounterUnsat, 87 mSDtfsCounter, 2588 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1643 GetRequests, 1273 SyntacticMatches, 0 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5999 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1462occurred in iteration=19, InterpolantAutomatonStates: 242, 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: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 2190 NumberOfCodeBlocks, 2175 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2629 ConstructedInterpolants, 0 QuantifiedInterpolants, 6949 SizeOfPredicates, 94 NumberOfNonLiveVariables, 1944 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 33 InterpolantComputations, 15 PerfectInterpolantSequences, 3191/9350 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! [2022-11-21 17:29:18,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5087d1e0-2a3c-4bb9-8f24-ddae8edec46b/bin/uautomizer-vX5HgA9Q3a/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