./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/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_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/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_583e9bdb-d4dc-4f20-b016-b031def0523d/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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- 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 17:10:46,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:10:46,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:10:46,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:10:46,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:10:46,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:10:46,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:10:46,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:10:46,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:10:46,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:10:46,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:10:46,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:10:46,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:10:46,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:10:46,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:10:46,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:10:46,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:10:46,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:10:46,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:10:46,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:10:46,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:10:46,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:10:46,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:10:46,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:10:46,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:10:46,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:10:46,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:10:46,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:10:46,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:10:46,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:10:46,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:10:46,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:10:46,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:10:46,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:10:46,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:10:46,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:10:46,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:10:46,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:10:46,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:10:46,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:10:46,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:10:46,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:10:47,035 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:10:47,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:10:47,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:10:47,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:10:47,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:10:47,038 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:10:47,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:10:47,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:10:47,040 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:10:47,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:10:47,041 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:10:47,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:10:47,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:10:47,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:10:47,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:10:47,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:10:47,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:10:47,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:10:47,044 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:10:47,044 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:10:47,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:10:47,044 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:10:47,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:10:47,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:10:47,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:10:47,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:10:47,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:10:47,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:10:47,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:10:47,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:10:47,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:10:47,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:10:47,049 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:10:47,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:10:47,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:10:47,050 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_583e9bdb-d4dc-4f20-b016-b031def0523d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2022-11-21 17:10:47,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:10:47,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:10:47,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:10:47,385 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:10:47,387 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:10:47,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/stack_longer-1.i [2022-11-21 17:10:50,397 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:10:50,676 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:10:50,677 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/sv-benchmarks/c/pthread/stack_longer-1.i [2022-11-21 17:10:50,701 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/data/f9d0770fa/951d129cac514775ba8ded970c811c6f/FLAG23b961c74 [2022-11-21 17:10:50,960 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/data/f9d0770fa/951d129cac514775ba8ded970c811c6f [2022-11-21 17:10:50,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:10:50,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:10:50,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:10:50,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:10:50,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:10:50,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:10:50" (1/1) ... [2022-11-21 17:10:50,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21dd40bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:50, skipping insertion in model container [2022-11-21 17:10:50,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:10:50" (1/1) ... [2022-11-21 17:10:50,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:10:51,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:10:51,511 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_583e9bdb-d4dc-4f20-b016-b031def0523d/sv-benchmarks/c/pthread/stack_longer-1.i[41527,41540] [2022-11-21 17:10:51,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:10:51,562 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:10:51,602 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_583e9bdb-d4dc-4f20-b016-b031def0523d/sv-benchmarks/c/pthread/stack_longer-1.i[41527,41540] [2022-11-21 17:10:51,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:10:51,680 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:10:51,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51 WrapperNode [2022-11-21 17:10:51,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:10:51,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:10:51,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:10:51,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:10:51,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51" (1/1) ... [2022-11-21 17:10:51,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51" (1/1) ... [2022-11-21 17:10:51,732 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 163 [2022-11-21 17:10:51,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:10:51,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:10:51,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:10:51,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:10:51,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51" (1/1) ... [2022-11-21 17:10:51,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51" (1/1) ... [2022-11-21 17:10:51,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51" (1/1) ... [2022-11-21 17:10:51,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51" (1/1) ... [2022-11-21 17:10:51,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51" (1/1) ... [2022-11-21 17:10:51,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51" (1/1) ... [2022-11-21 17:10:51,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51" (1/1) ... [2022-11-21 17:10:51,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51" (1/1) ... [2022-11-21 17:10:51,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:10:51,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:10:51,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:10:51,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:10:51,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51" (1/1) ... [2022-11-21 17:10:51,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:10:51,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:10:51,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:10:51,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:10:51,931 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-21 17:10:51,932 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-21 17:10:51,932 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-21 17:10:51,932 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-21 17:10:51,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:10:51,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:10:51,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:10:51,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:10:51,933 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 17:10:51,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:10:51,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:10:51,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:10:51,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:10:51,935 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 17:10:52,165 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:10:52,167 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:10:52,466 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:10:52,481 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:10:52,481 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 17:10:52,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:10:52 BoogieIcfgContainer [2022-11-21 17:10:52,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:10:52,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:10:52,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:10:52,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:10:52,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:10:50" (1/3) ... [2022-11-21 17:10:52,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c246d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:10:52, skipping insertion in model container [2022-11-21 17:10:52,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:51" (2/3) ... [2022-11-21 17:10:52,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c246d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:10:52, skipping insertion in model container [2022-11-21 17:10:52,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:10:52" (3/3) ... [2022-11-21 17:10:52,493 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2022-11-21 17:10:52,501 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:10:52,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:10:52,512 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-21 17:10:52,512 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:10:52,653 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 17:10:52,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 193 transitions, 402 flow [2022-11-21 17:10:52,841 INFO L130 PetriNetUnfolder]: 10/191 cut-off events. [2022-11-21 17:10:52,841 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 17:10:52,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 191 events. 10/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 495 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2022-11-21 17:10:52,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 193 transitions, 402 flow [2022-11-21 17:10:52,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 181 transitions, 371 flow [2022-11-21 17:10:52,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:10:52,888 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;@77bb3073, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:10:52,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-21 17:10:52,920 INFO L130 PetriNetUnfolder]: 3/77 cut-off events. [2022-11-21 17:10:52,920 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 17:10:52,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:10:52,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:52,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:10:52,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:52,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1646097193, now seen corresponding path program 1 times [2022-11-21 17:10:52,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:52,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139970614] [2022-11-21 17:10:52,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:52,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:53,382 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 17:10:53,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:53,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139970614] [2022-11-21 17:10:53,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139970614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:53,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:53,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:10:53,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429552617] [2022-11-21 17:10:53,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:53,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:10:53,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:53,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:10:53,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:10:53,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-21 17:10:53,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 181 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 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 17:10:53,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:10:53,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-21 17:10:53,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:10:53,580 INFO L130 PetriNetUnfolder]: 28/363 cut-off events. [2022-11-21 17:10:53,580 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-21 17:10:53,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 363 events. 28/363 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1646 event pairs, 10 based on Foata normal form. 41/369 useless extension candidates. Maximal degree in co-relation 394. Up to 36 conditions per place. [2022-11-21 17:10:53,592 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 19 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2022-11-21 17:10:53,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 181 transitions, 426 flow [2022-11-21 17:10:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:10:53,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:10:53,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 897 transitions. [2022-11-21 17:10:53,616 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9295336787564766 [2022-11-21 17:10:53,617 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 897 transitions. [2022-11-21 17:10:53,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 897 transitions. [2022-11-21 17:10:53,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:10:53,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 897 transitions. [2022-11-21 17:10:53,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.4) internal successors, (897), 5 states have internal predecessors, (897), 0 states have call successors, (0), 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 17:10:53,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 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 17:10:53,643 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 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 17:10:53,646 INFO L175 Difference]: Start difference. First operand has 178 places, 181 transitions, 371 flow. Second operand 5 states and 897 transitions. [2022-11-21 17:10:53,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 181 transitions, 426 flow [2022-11-21 17:10:53,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 181 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:10:53,655 INFO L231 Difference]: Finished difference. Result has 178 places, 175 transitions, 380 flow [2022-11-21 17:10:53,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=178, PETRI_TRANSITIONS=175} [2022-11-21 17:10:53,661 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 0 predicate places. [2022-11-21 17:10:53,662 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 175 transitions, 380 flow [2022-11-21 17:10:53,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 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 17:10:53,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:10:53,663 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:53,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:10:53,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:10:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:53,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1813149748, now seen corresponding path program 1 times [2022-11-21 17:10:53,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:53,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985452549] [2022-11-21 17:10:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:53,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:10:53,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:53,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985452549] [2022-11-21 17:10:53,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985452549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:53,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:53,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:10:53,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196800715] [2022-11-21 17:10:53,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:53,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:10:53,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:53,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:10:53,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:10:53,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-21 17:10:53,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 175 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 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 17:10:53,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:10:53,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-21 17:10:53,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:10:53,933 INFO L130 PetriNetUnfolder]: 23/266 cut-off events. [2022-11-21 17:10:53,933 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-21 17:10:53,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 266 events. 23/266 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1097 event pairs, 3 based on Foata normal form. 2/249 useless extension candidates. Maximal degree in co-relation 301. Up to 21 conditions per place. [2022-11-21 17:10:53,937 INFO L137 encePairwiseOnDemand]: 187/193 looper letters, 12 selfloop transitions, 8 changer transitions 0/178 dead transitions. [2022-11-21 17:10:53,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 178 transitions, 427 flow [2022-11-21 17:10:53,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:10:53,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:10:53,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 873 transitions. [2022-11-21 17:10:53,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9046632124352332 [2022-11-21 17:10:53,940 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 873 transitions. [2022-11-21 17:10:53,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 873 transitions. [2022-11-21 17:10:53,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:10:53,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 873 transitions. [2022-11-21 17:10:53,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 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 17:10:53,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 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 17:10:53,946 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 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 17:10:53,946 INFO L175 Difference]: Start difference. First operand has 178 places, 175 transitions, 380 flow. Second operand 5 states and 873 transitions. [2022-11-21 17:10:53,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 178 transitions, 427 flow [2022-11-21 17:10:53,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 178 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:10:53,951 INFO L231 Difference]: Finished difference. Result has 181 places, 175 transitions, 398 flow [2022-11-21 17:10:53,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=181, PETRI_TRANSITIONS=175} [2022-11-21 17:10:53,952 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 3 predicate places. [2022-11-21 17:10:53,953 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 175 transitions, 398 flow [2022-11-21 17:10:53,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 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 17:10:53,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:10:53,954 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1] [2022-11-21 17:10:53,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:10:53,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:10:53,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:53,955 INFO L85 PathProgramCache]: Analyzing trace with hash -373066784, now seen corresponding path program 1 times [2022-11-21 17:10:53,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:53,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195967859] [2022-11-21 17:10:53,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:53,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:54,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:54,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195967859] [2022-11-21 17:10:54,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195967859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:10:54,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777408998] [2022-11-21 17:10:54,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:54,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:10:54,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:10:54,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:10:54,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:10:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:54,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:10:54,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:10:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:54,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:10:54,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777408998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:54,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:10:54,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:10:54,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493639012] [2022-11-21 17:10:54,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:54,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:10:54,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:54,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:10:54,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:10:54,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-21 17:10:54,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 175 transitions, 398 flow. Second operand has 6 states, 6 states have (on average 173.33333333333334) internal successors, (1040), 6 states have internal predecessors, (1040), 0 states have call successors, (0), 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 17:10:54,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:10:54,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-21 17:10:54,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:10:54,529 INFO L130 PetriNetUnfolder]: 24/311 cut-off events. [2022-11-21 17:10:54,530 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-21 17:10:54,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 311 events. 24/311 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1204 event pairs, 2 based on Foata normal form. 2/289 useless extension candidates. Maximal degree in co-relation 361. Up to 15 conditions per place. [2022-11-21 17:10:54,534 INFO L137 encePairwiseOnDemand]: 188/193 looper letters, 17 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2022-11-21 17:10:54,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 181 transitions, 459 flow [2022-11-21 17:10:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:10:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:10:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1221 transitions. [2022-11-21 17:10:54,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9037749814951888 [2022-11-21 17:10:54,538 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1221 transitions. [2022-11-21 17:10:54,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1221 transitions. [2022-11-21 17:10:54,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:10:54,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1221 transitions. [2022-11-21 17:10:54,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.42857142857142) internal successors, (1221), 7 states have internal predecessors, (1221), 0 states have call successors, (0), 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 17:10:54,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 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 17:10:54,570 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 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 17:10:54,570 INFO L175 Difference]: Start difference. First operand has 181 places, 175 transitions, 398 flow. Second operand 7 states and 1221 transitions. [2022-11-21 17:10:54,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 181 transitions, 459 flow [2022-11-21 17:10:54,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 181 transitions, 447 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:10:54,577 INFO L231 Difference]: Finished difference. Result has 183 places, 174 transitions, 394 flow [2022-11-21 17:10:54,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=394, PETRI_PLACES=183, PETRI_TRANSITIONS=174} [2022-11-21 17:10:54,579 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 5 predicate places. [2022-11-21 17:10:54,580 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 174 transitions, 394 flow [2022-11-21 17:10:54,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.33333333333334) internal successors, (1040), 6 states have internal predecessors, (1040), 0 states have call successors, (0), 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 17:10:54,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:10:54,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:54,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 17:10:54,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:10:54,787 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 17:10:54,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:54,787 INFO L85 PathProgramCache]: Analyzing trace with hash 674954724, now seen corresponding path program 1 times [2022-11-21 17:10:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:54,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739580087] [2022-11-21 17:10:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:54,905 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 17:10:54,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:54,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739580087] [2022-11-21 17:10:54,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739580087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:54,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:54,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:10:54,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335680939] [2022-11-21 17:10:54,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:54,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:10:54,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:54,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:10:54,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:10:54,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 193 [2022-11-21 17:10:54,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 174 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 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 17:10:54,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:10:54,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 193 [2022-11-21 17:10:54,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:10:55,568 INFO L130 PetriNetUnfolder]: 379/2569 cut-off events. [2022-11-21 17:10:55,569 INFO L131 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2022-11-21 17:10:55,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 2569 events. 379/2569 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 21370 event pairs, 140 based on Foata normal form. 0/2260 useless extension candidates. Maximal degree in co-relation 2622. Up to 347 conditions per place. [2022-11-21 17:10:55,590 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 58 selfloop transitions, 13 changer transitions 1/223 dead transitions. [2022-11-21 17:10:55,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 223 transitions, 644 flow [2022-11-21 17:10:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:10:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:10:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1373 transitions. [2022-11-21 17:10:55,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8892487046632125 [2022-11-21 17:10:55,598 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1373 transitions. [2022-11-21 17:10:55,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1373 transitions. [2022-11-21 17:10:55,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:10:55,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1373 transitions. [2022-11-21 17:10:55,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 171.625) internal successors, (1373), 8 states have internal predecessors, (1373), 0 states have call successors, (0), 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 17:10:55,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 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 17:10:55,607 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 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 17:10:55,607 INFO L175 Difference]: Start difference. First operand has 183 places, 174 transitions, 394 flow. Second operand 8 states and 1373 transitions. [2022-11-21 17:10:55,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 223 transitions, 644 flow [2022-11-21 17:10:55,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 223 transitions, 633 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 17:10:55,617 INFO L231 Difference]: Finished difference. Result has 191 places, 185 transitions, 481 flow [2022-11-21 17:10:55,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=481, PETRI_PLACES=191, PETRI_TRANSITIONS=185} [2022-11-21 17:10:55,619 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 13 predicate places. [2022-11-21 17:10:55,619 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 185 transitions, 481 flow [2022-11-21 17:10:55,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 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 17:10:55,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:10:55,620 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:55,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:10:55,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:10:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:55,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1196397500, now seen corresponding path program 1 times [2022-11-21 17:10:55,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:55,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761460229] [2022-11-21 17:10:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:55,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:55,830 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 17:10:55,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:55,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761460229] [2022-11-21 17:10:55,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761460229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:55,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:55,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:10:55,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735812521] [2022-11-21 17:10:55,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:55,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:10:55,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:55,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:10:55,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:10:55,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 193 [2022-11-21 17:10:55,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 185 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 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 17:10:55,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:10:55,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 193 [2022-11-21 17:10:55,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:10:56,284 INFO L130 PetriNetUnfolder]: 226/2042 cut-off events. [2022-11-21 17:10:56,284 INFO L131 PetriNetUnfolder]: For 450/538 co-relation queries the response was YES. [2022-11-21 17:10:56,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 2042 events. 226/2042 cut-off events. For 450/538 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 15555 event pairs, 118 based on Foata normal form. 22/1855 useless extension candidates. Maximal degree in co-relation 2357. Up to 335 conditions per place. [2022-11-21 17:10:56,302 INFO L137 encePairwiseOnDemand]: 187/193 looper letters, 33 selfloop transitions, 6 changer transitions 0/201 dead transitions. [2022-11-21 17:10:56,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 201 transitions, 604 flow [2022-11-21 17:10:56,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:10:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:10:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 869 transitions. [2022-11-21 17:10:56,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.900518134715026 [2022-11-21 17:10:56,306 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 869 transitions. [2022-11-21 17:10:56,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 869 transitions. [2022-11-21 17:10:56,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:10:56,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 869 transitions. [2022-11-21 17:10:56,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 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 17:10:56,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 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 17:10:56,311 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 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 17:10:56,311 INFO L175 Difference]: Start difference. First operand has 191 places, 185 transitions, 481 flow. Second operand 5 states and 869 transitions. [2022-11-21 17:10:56,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 201 transitions, 604 flow [2022-11-21 17:10:56,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 201 transitions, 604 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:10:56,318 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 515 flow [2022-11-21 17:10:56,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=515, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2022-11-21 17:10:56,322 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 20 predicate places. [2022-11-21 17:10:56,322 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 515 flow [2022-11-21 17:10:56,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 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 17:10:56,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:10:56,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:56,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:10:56,323 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:10:56,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:56,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1457001511, now seen corresponding path program 1 times [2022-11-21 17:10:56,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:56,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066862114] [2022-11-21 17:10:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:56,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:56,509 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 17:10:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:56,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066862114] [2022-11-21 17:10:56,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066862114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:56,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:56,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:10:56,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723067703] [2022-11-21 17:10:56,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:56,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:10:56,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:10:56,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:10:56,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-21 17:10:56,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 515 flow. Second operand has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 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 17:10:56,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:10:56,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-21 17:10:56,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:10:56,786 INFO L130 PetriNetUnfolder]: 74/1326 cut-off events. [2022-11-21 17:10:56,787 INFO L131 PetriNetUnfolder]: For 207/262 co-relation queries the response was YES. [2022-11-21 17:10:56,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1900 conditions, 1326 events. 74/1326 cut-off events. For 207/262 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8439 event pairs, 19 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 1485. Up to 102 conditions per place. [2022-11-21 17:10:56,800 INFO L137 encePairwiseOnDemand]: 186/193 looper letters, 19 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2022-11-21 17:10:56,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 196 transitions, 585 flow [2022-11-21 17:10:56,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:10:56,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:10:56,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 881 transitions. [2022-11-21 17:10:56,803 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9129533678756476 [2022-11-21 17:10:56,804 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 881 transitions. [2022-11-21 17:10:56,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 881 transitions. [2022-11-21 17:10:56,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:10:56,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 881 transitions. [2022-11-21 17:10:56,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 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 17:10:56,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 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 17:10:56,809 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 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 17:10:56,809 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 515 flow. Second operand 5 states and 881 transitions. [2022-11-21 17:10:56,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 196 transitions, 585 flow [2022-11-21 17:10:56,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 196 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:10:56,815 INFO L231 Difference]: Finished difference. Result has 204 places, 190 transitions, 545 flow [2022-11-21 17:10:56,815 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=545, PETRI_PLACES=204, PETRI_TRANSITIONS=190} [2022-11-21 17:10:56,816 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 26 predicate places. [2022-11-21 17:10:56,816 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 190 transitions, 545 flow [2022-11-21 17:10:56,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 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 17:10:56,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:10:56,817 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:56,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:10:56,818 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:10:56,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash -120930971, now seen corresponding path program 1 times [2022-11-21 17:10:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:56,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559236177] [2022-11-21 17:10:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:56,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:56,949 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 17:10:56,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:56,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559236177] [2022-11-21 17:10:56,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559236177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:56,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:56,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:10:56,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294447176] [2022-11-21 17:10:56,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:56,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:10:56,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:56,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:10:56,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:10:56,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-21 17:10:56,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 190 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 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 17:10:56,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:10:56,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-21 17:10:56,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:10:57,163 INFO L130 PetriNetUnfolder]: 47/1170 cut-off events. [2022-11-21 17:10:57,164 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-11-21 17:10:57,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1556 conditions, 1170 events. 47/1170 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6453 event pairs, 12 based on Foata normal form. 12/1126 useless extension candidates. Maximal degree in co-relation 1394. Up to 42 conditions per place. [2022-11-21 17:10:57,172 INFO L137 encePairwiseOnDemand]: 189/193 looper letters, 12 selfloop transitions, 4 changer transitions 0/189 dead transitions. [2022-11-21 17:10:57,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 189 transitions, 562 flow [2022-11-21 17:10:57,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:10:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:10:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2022-11-21 17:10:57,174 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.917098445595855 [2022-11-21 17:10:57,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2022-11-21 17:10:57,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2022-11-21 17:10:57,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:10:57,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2022-11-21 17:10:57,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 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 17:10:57,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 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 17:10:57,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 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 17:10:57,178 INFO L175 Difference]: Start difference. First operand has 204 places, 190 transitions, 545 flow. Second operand 3 states and 531 transitions. [2022-11-21 17:10:57,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 189 transitions, 562 flow [2022-11-21 17:10:57,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 189 transitions, 554 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-21 17:10:57,184 INFO L231 Difference]: Finished difference. Result has 203 places, 187 transitions, 523 flow [2022-11-21 17:10:57,184 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=523, PETRI_PLACES=203, PETRI_TRANSITIONS=187} [2022-11-21 17:10:57,185 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 25 predicate places. [2022-11-21 17:10:57,185 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 187 transitions, 523 flow [2022-11-21 17:10:57,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 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 17:10:57,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:10:57,186 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:57,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:10:57,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:10:57,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:57,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1301568884, now seen corresponding path program 1 times [2022-11-21 17:10:57,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:57,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639591582] [2022-11-21 17:10:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:57,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:57,346 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 17:10:57,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:57,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639591582] [2022-11-21 17:10:57,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639591582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:57,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:57,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:10:57,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392797001] [2022-11-21 17:10:57,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:57,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:10:57,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:57,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:10:57,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:10:57,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-21 17:10:57,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 187 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 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 17:10:57,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:10:57,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-21 17:10:57,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:10:57,712 INFO L130 PetriNetUnfolder]: 101/1483 cut-off events. [2022-11-21 17:10:57,712 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-11-21 17:10:57,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2227 conditions, 1483 events. 101/1483 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8856 event pairs, 36 based on Foata normal form. 6/1423 useless extension candidates. Maximal degree in co-relation 1372. Up to 143 conditions per place. [2022-11-21 17:10:57,722 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 51 selfloop transitions, 9 changer transitions 0/217 dead transitions. [2022-11-21 17:10:57,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 217 transitions, 726 flow [2022-11-21 17:10:57,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:10:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:10:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1341 transitions. [2022-11-21 17:10:57,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8685233160621761 [2022-11-21 17:10:57,725 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1341 transitions. [2022-11-21 17:10:57,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1341 transitions. [2022-11-21 17:10:57,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:10:57,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1341 transitions. [2022-11-21 17:10:57,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.625) internal successors, (1341), 8 states have internal predecessors, (1341), 0 states have call successors, (0), 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 17:10:57,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 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 17:10:57,733 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 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 17:10:57,733 INFO L175 Difference]: Start difference. First operand has 203 places, 187 transitions, 523 flow. Second operand 8 states and 1341 transitions. [2022-11-21 17:10:57,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 217 transitions, 726 flow [2022-11-21 17:10:57,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 217 transitions, 722 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:10:57,739 INFO L231 Difference]: Finished difference. Result has 212 places, 191 transitions, 570 flow [2022-11-21 17:10:57,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=570, PETRI_PLACES=212, PETRI_TRANSITIONS=191} [2022-11-21 17:10:57,740 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 34 predicate places. [2022-11-21 17:10:57,740 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 191 transitions, 570 flow [2022-11-21 17:10:57,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 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 17:10:57,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:10:57,741 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:57,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:10:57,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:10:57,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:57,742 INFO L85 PathProgramCache]: Analyzing trace with hash -120209861, now seen corresponding path program 1 times [2022-11-21 17:10:57,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:57,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028943711] [2022-11-21 17:10:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:57,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:57,902 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 17:10:57,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:57,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028943711] [2022-11-21 17:10:57,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028943711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:57,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:57,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:10:57,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790612312] [2022-11-21 17:10:57,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:57,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:10:57,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:57,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:10:57,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:10:57,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-21 17:10:57,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 191 transitions, 570 flow. Second operand has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 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 17:10:57,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:10:57,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-21 17:10:57,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:10:58,464 INFO L130 PetriNetUnfolder]: 150/2145 cut-off events. [2022-11-21 17:10:58,465 INFO L131 PetriNetUnfolder]: For 399/399 co-relation queries the response was YES. [2022-11-21 17:10:58,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3315 conditions, 2145 events. 150/2145 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 14406 event pairs, 41 based on Foata normal form. 8/2074 useless extension candidates. Maximal degree in co-relation 2723. Up to 199 conditions per place. [2022-11-21 17:10:58,482 INFO L137 encePairwiseOnDemand]: 183/193 looper letters, 53 selfloop transitions, 14 changer transitions 0/224 dead transitions. [2022-11-21 17:10:58,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 224 transitions, 823 flow [2022-11-21 17:10:58,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:10:58,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:10:58,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1340 transitions. [2022-11-21 17:10:58,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8678756476683938 [2022-11-21 17:10:58,486 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1340 transitions. [2022-11-21 17:10:58,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1340 transitions. [2022-11-21 17:10:58,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:10:58,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1340 transitions. [2022-11-21 17:10:58,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.5) internal successors, (1340), 8 states have internal predecessors, (1340), 0 states have call successors, (0), 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 17:10:58,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 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 17:10:58,494 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 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 17:10:58,494 INFO L175 Difference]: Start difference. First operand has 212 places, 191 transitions, 570 flow. Second operand 8 states and 1340 transitions. [2022-11-21 17:10:58,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 224 transitions, 823 flow [2022-11-21 17:10:58,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 224 transitions, 815 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:10:58,501 INFO L231 Difference]: Finished difference. Result has 220 places, 200 transitions, 684 flow [2022-11-21 17:10:58,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=684, PETRI_PLACES=220, PETRI_TRANSITIONS=200} [2022-11-21 17:10:58,502 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 42 predicate places. [2022-11-21 17:10:58,502 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 200 transitions, 684 flow [2022-11-21 17:10:58,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 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 17:10:58,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:10:58,503 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:58,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:10:58,504 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:10:58,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:58,505 INFO L85 PathProgramCache]: Analyzing trace with hash 594025669, now seen corresponding path program 1 times [2022-11-21 17:10:58,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:58,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323478080] [2022-11-21 17:10:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:58,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:58,670 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:58,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:58,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323478080] [2022-11-21 17:10:58,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323478080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:10:58,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175980663] [2022-11-21 17:10:58,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:58,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:10:58,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:10:58,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:10:58,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:10:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:58,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:10:58,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:10:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:59,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:10:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:59,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175980663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:10:59,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:10:59,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 17:10:59,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085128121] [2022-11-21 17:10:59,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:10:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:10:59,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:10:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:10:59,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 193 [2022-11-21 17:10:59,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 200 transitions, 684 flow. Second operand has 12 states, 12 states have (on average 169.25) internal successors, (2031), 12 states have internal predecessors, (2031), 0 states have call successors, (0), 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 17:10:59,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:10:59,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 193 [2022-11-21 17:10:59,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:00,147 INFO L130 PetriNetUnfolder]: 170/2997 cut-off events. [2022-11-21 17:11:00,147 INFO L131 PetriNetUnfolder]: For 1042/1048 co-relation queries the response was YES. [2022-11-21 17:11:00,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4690 conditions, 2997 events. 170/2997 cut-off events. For 1042/1048 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 20409 event pairs, 42 based on Foata normal form. 24/2906 useless extension candidates. Maximal degree in co-relation 3905. Up to 117 conditions per place. [2022-11-21 17:11:00,169 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 65 selfloop transitions, 26 changer transitions 0/259 dead transitions. [2022-11-21 17:11:00,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 259 transitions, 1093 flow [2022-11-21 17:11:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:11:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 17:11:00,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3075 transitions. [2022-11-21 17:11:00,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.885146804835924 [2022-11-21 17:11:00,177 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3075 transitions. [2022-11-21 17:11:00,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3075 transitions. [2022-11-21 17:11:00,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:00,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3075 transitions. [2022-11-21 17:11:00,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.83333333333334) internal successors, (3075), 18 states have internal predecessors, (3075), 0 states have call successors, (0), 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 17:11:00,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 193.0) internal successors, (3667), 19 states have internal predecessors, (3667), 0 states have call successors, (0), 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 17:11:00,194 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 193.0) internal successors, (3667), 19 states have internal predecessors, (3667), 0 states have call successors, (0), 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 17:11:00,194 INFO L175 Difference]: Start difference. First operand has 220 places, 200 transitions, 684 flow. Second operand 18 states and 3075 transitions. [2022-11-21 17:11:00,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 259 transitions, 1093 flow [2022-11-21 17:11:00,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 259 transitions, 1085 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:11:00,203 INFO L231 Difference]: Finished difference. Result has 238 places, 216 transitions, 854 flow [2022-11-21 17:11:00,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=854, PETRI_PLACES=238, PETRI_TRANSITIONS=216} [2022-11-21 17:11:00,204 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 60 predicate places. [2022-11-21 17:11:00,204 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 216 transitions, 854 flow [2022-11-21 17:11:00,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.25) internal successors, (2031), 12 states have internal predecessors, (2031), 0 states have call successors, (0), 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 17:11:00,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:00,206 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:00,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:11:00,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 17:11:00,412 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:11:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:00,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1234927084, now seen corresponding path program 1 times [2022-11-21 17:11:00,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:00,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297426771] [2022-11-21 17:11:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:00,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:00,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:00,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297426771] [2022-11-21 17:11:00,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297426771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:11:00,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027326213] [2022-11-21 17:11:00,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:00,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:11:00,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:11:00,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:11:00,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:11:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:11:00,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:11:00,922 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:00,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:11:00,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027326213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:00,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:11:00,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:11:00,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703039714] [2022-11-21 17:11:00,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:00,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:00,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:00,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:00,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:11:00,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 193 [2022-11-21 17:11:00,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 216 transitions, 854 flow. Second operand has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 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 17:11:00,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:00,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 193 [2022-11-21 17:11:00,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:01,833 INFO L130 PetriNetUnfolder]: 179/3194 cut-off events. [2022-11-21 17:11:01,833 INFO L131 PetriNetUnfolder]: For 1678/1684 co-relation queries the response was YES. [2022-11-21 17:11:01,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 3194 events. 179/3194 cut-off events. For 1678/1684 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 21962 event pairs, 43 based on Foata normal form. 30/3099 useless extension candidates. Maximal degree in co-relation 4267. Up to 245 conditions per place. [2022-11-21 17:11:01,862 INFO L137 encePairwiseOnDemand]: 185/193 looper letters, 49 selfloop transitions, 19 changer transitions 0/236 dead transitions. [2022-11-21 17:11:01,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 236 transitions, 1079 flow [2022-11-21 17:11:01,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:11:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:11:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1375 transitions. [2022-11-21 17:11:01,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8905440414507773 [2022-11-21 17:11:01,867 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1375 transitions. [2022-11-21 17:11:01,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1375 transitions. [2022-11-21 17:11:01,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:01,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1375 transitions. [2022-11-21 17:11:01,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 171.875) internal successors, (1375), 8 states have internal predecessors, (1375), 0 states have call successors, (0), 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 17:11:01,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 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 17:11:01,878 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 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 17:11:01,879 INFO L175 Difference]: Start difference. First operand has 238 places, 216 transitions, 854 flow. Second operand 8 states and 1375 transitions. [2022-11-21 17:11:01,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 236 transitions, 1079 flow [2022-11-21 17:11:01,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 236 transitions, 1022 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-11-21 17:11:01,892 INFO L231 Difference]: Finished difference. Result has 240 places, 218 transitions, 899 flow [2022-11-21 17:11:01,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=899, PETRI_PLACES=240, PETRI_TRANSITIONS=218} [2022-11-21 17:11:01,894 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 62 predicate places. [2022-11-21 17:11:01,894 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 218 transitions, 899 flow [2022-11-21 17:11:01,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 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 17:11:01,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:01,896 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2022-11-21 17:11:01,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:11:02,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 17:11:02,111 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:11:02,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1115448976, now seen corresponding path program 1 times [2022-11-21 17:11:02,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:02,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306815276] [2022-11-21 17:11:02,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:02,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:11:02,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:02,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306815276] [2022-11-21 17:11:02,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306815276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:02,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:02,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:11:02,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381699306] [2022-11-21 17:11:02,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:02,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:11:02,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:02,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:11:02,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:11:02,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-21 17:11:02,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 218 transitions, 899 flow. Second operand has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 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 17:11:02,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:02,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-21 17:11:02,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:02,938 INFO L130 PetriNetUnfolder]: 131/2839 cut-off events. [2022-11-21 17:11:02,938 INFO L131 PetriNetUnfolder]: For 1260/1260 co-relation queries the response was YES. [2022-11-21 17:11:02,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4377 conditions, 2839 events. 131/2839 cut-off events. For 1260/1260 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 17915 event pairs, 29 based on Foata normal form. 16/2746 useless extension candidates. Maximal degree in co-relation 3786. Up to 95 conditions per place. [2022-11-21 17:11:02,968 INFO L137 encePairwiseOnDemand]: 187/193 looper letters, 12 selfloop transitions, 8 changer transitions 0/221 dead transitions. [2022-11-21 17:11:02,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 221 transitions, 949 flow [2022-11-21 17:11:02,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:11:02,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:11:02,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 873 transitions. [2022-11-21 17:11:02,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9046632124352332 [2022-11-21 17:11:02,971 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 873 transitions. [2022-11-21 17:11:02,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 873 transitions. [2022-11-21 17:11:02,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:02,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 873 transitions. [2022-11-21 17:11:02,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 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 17:11:02,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 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 17:11:02,976 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 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 17:11:02,976 INFO L175 Difference]: Start difference. First operand has 240 places, 218 transitions, 899 flow. Second operand 5 states and 873 transitions. [2022-11-21 17:11:02,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 221 transitions, 949 flow [2022-11-21 17:11:02,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 221 transitions, 933 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-21 17:11:02,991 INFO L231 Difference]: Finished difference. Result has 241 places, 218 transitions, 903 flow [2022-11-21 17:11:02,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=903, PETRI_PLACES=241, PETRI_TRANSITIONS=218} [2022-11-21 17:11:02,992 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 63 predicate places. [2022-11-21 17:11:02,992 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 218 transitions, 903 flow [2022-11-21 17:11:02,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 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 17:11:02,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:02,993 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:11:02,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:11:02,993 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:11:02,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:02,994 INFO L85 PathProgramCache]: Analyzing trace with hash -219179364, now seen corresponding path program 1 times [2022-11-21 17:11:02,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:02,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303177323] [2022-11-21 17:11:02,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:02,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:03,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:03,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303177323] [2022-11-21 17:11:03,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303177323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:11:03,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298412370] [2022-11-21 17:11:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:03,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:11:03,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:11:03,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:11:03,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:11:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:03,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:11:03,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:11:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:03,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:11:03,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298412370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:03,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:11:03,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-21 17:11:03,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512301319] [2022-11-21 17:11:03,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:03,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:11:03,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:03,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:11:03,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:11:03,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-21 17:11:03,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 218 transitions, 903 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 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 17:11:03,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:03,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-21 17:11:03,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:04,022 INFO L130 PetriNetUnfolder]: 126/2973 cut-off events. [2022-11-21 17:11:04,023 INFO L131 PetriNetUnfolder]: For 1344/1344 co-relation queries the response was YES. [2022-11-21 17:11:04,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 2973 events. 126/2973 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 18972 event pairs, 36 based on Foata normal form. 24/2883 useless extension candidates. Maximal degree in co-relation 4131. Up to 140 conditions per place. [2022-11-21 17:11:04,048 INFO L137 encePairwiseOnDemand]: 189/193 looper letters, 13 selfloop transitions, 5 changer transitions 0/219 dead transitions. [2022-11-21 17:11:04,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 219 transitions, 943 flow [2022-11-21 17:11:04,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:11:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:11:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 699 transitions. [2022-11-21 17:11:04,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.905440414507772 [2022-11-21 17:11:04,052 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 699 transitions. [2022-11-21 17:11:04,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 699 transitions. [2022-11-21 17:11:04,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:04,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 699 transitions. [2022-11-21 17:11:04,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 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 17:11:04,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 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 17:11:04,056 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 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 17:11:04,056 INFO L175 Difference]: Start difference. First operand has 241 places, 218 transitions, 903 flow. Second operand 4 states and 699 transitions. [2022-11-21 17:11:04,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 219 transitions, 943 flow [2022-11-21 17:11:04,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 219 transitions, 931 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:11:04,069 INFO L231 Difference]: Finished difference. Result has 240 places, 217 transitions, 897 flow [2022-11-21 17:11:04,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=897, PETRI_PLACES=240, PETRI_TRANSITIONS=217} [2022-11-21 17:11:04,071 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 62 predicate places. [2022-11-21 17:11:04,071 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 217 transitions, 897 flow [2022-11-21 17:11:04,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 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 17:11:04,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:04,072 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 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 17:11:04,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:11:04,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:11:04,278 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:11:04,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:04,279 INFO L85 PathProgramCache]: Analyzing trace with hash 390972373, now seen corresponding path program 1 times [2022-11-21 17:11:04,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:04,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164201453] [2022-11-21 17:11:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:04,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:04,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:04,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164201453] [2022-11-21 17:11:04,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164201453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:11:04,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756361343] [2022-11-21 17:11:04,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:04,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:11:04,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:11:04,503 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:11:04,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:11:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:04,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:11:04,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:11:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:04,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:11:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:05,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756361343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:11:05,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:11:05,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-21 17:11:05,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140890929] [2022-11-21 17:11:05,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:11:05,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 17:11:05,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:05,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 17:11:05,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:11:05,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-21 17:11:05,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 217 transitions, 897 flow. Second operand has 16 states, 16 states have (on average 163.5) internal successors, (2616), 16 states have internal predecessors, (2616), 0 states have call successors, (0), 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 17:11:05,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:05,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-21 17:11:05,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:06,371 INFO L130 PetriNetUnfolder]: 244/3554 cut-off events. [2022-11-21 17:11:06,371 INFO L131 PetriNetUnfolder]: For 2064/2064 co-relation queries the response was YES. [2022-11-21 17:11:06,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5956 conditions, 3554 events. 244/3554 cut-off events. For 2064/2064 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 26343 event pairs, 62 based on Foata normal form. 38/3454 useless extension candidates. Maximal degree in co-relation 4948. Up to 130 conditions per place. [2022-11-21 17:11:06,393 INFO L137 encePairwiseOnDemand]: 180/193 looper letters, 81 selfloop transitions, 47 changer transitions 0/284 dead transitions. [2022-11-21 17:11:06,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 284 transitions, 1399 flow [2022-11-21 17:11:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 17:11:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-21 17:11:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3788 transitions. [2022-11-21 17:11:06,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.853345348051363 [2022-11-21 17:11:06,404 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3788 transitions. [2022-11-21 17:11:06,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3788 transitions. [2022-11-21 17:11:06,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:06,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3788 transitions. [2022-11-21 17:11:06,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 164.69565217391303) internal successors, (3788), 23 states have internal predecessors, (3788), 0 states have call successors, (0), 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 17:11:06,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 193.0) internal successors, (4632), 24 states have internal predecessors, (4632), 0 states have call successors, (0), 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 17:11:06,428 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 193.0) internal successors, (4632), 24 states have internal predecessors, (4632), 0 states have call successors, (0), 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 17:11:06,428 INFO L175 Difference]: Start difference. First operand has 240 places, 217 transitions, 897 flow. Second operand 23 states and 3788 transitions. [2022-11-21 17:11:06,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 284 transitions, 1399 flow [2022-11-21 17:11:06,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 284 transitions, 1389 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:11:06,444 INFO L231 Difference]: Finished difference. Result has 263 places, 229 transitions, 1097 flow [2022-11-21 17:11:06,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1097, PETRI_PLACES=263, PETRI_TRANSITIONS=229} [2022-11-21 17:11:06,445 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 85 predicate places. [2022-11-21 17:11:06,446 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 229 transitions, 1097 flow [2022-11-21 17:11:06,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 163.5) internal successors, (2616), 16 states have internal predecessors, (2616), 0 states have call successors, (0), 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 17:11:06,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:06,447 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:06,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-21 17:11:06,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 17:11:06,653 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:11:06,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:06,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1064529901, now seen corresponding path program 1 times [2022-11-21 17:11:06,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:06,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149187762] [2022-11-21 17:11:06,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:06,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:06,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:06,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149187762] [2022-11-21 17:11:06,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149187762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:11:06,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669060992] [2022-11-21 17:11:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:06,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:11:06,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:11:06,943 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:11:06,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 17:11:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:07,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:11:07,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:11:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:07,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:11:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:07,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669060992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:11:07,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:11:07,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-21 17:11:07,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187850028] [2022-11-21 17:11:07,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:11:07,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 17:11:07,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:07,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 17:11:07,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:11:07,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-21 17:11:07,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 229 transitions, 1097 flow. Second operand has 14 states, 14 states have (on average 164.14285714285714) internal successors, (2298), 14 states have internal predecessors, (2298), 0 states have call successors, (0), 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 17:11:07,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:07,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-21 17:11:07,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:09,337 INFO L130 PetriNetUnfolder]: 391/5382 cut-off events. [2022-11-21 17:11:09,337 INFO L131 PetriNetUnfolder]: For 3617/3617 co-relation queries the response was YES. [2022-11-21 17:11:09,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9197 conditions, 5382 events. 391/5382 cut-off events. For 3617/3617 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 42389 event pairs, 58 based on Foata normal form. 53/5233 useless extension candidates. Maximal degree in co-relation 8162. Up to 276 conditions per place. [2022-11-21 17:11:09,378 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 118 selfloop transitions, 78 changer transitions 0/352 dead transitions. [2022-11-21 17:11:09,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 352 transitions, 2347 flow [2022-11-21 17:11:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 17:11:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 17:11:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3965 transitions. [2022-11-21 17:11:09,387 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8560017271157168 [2022-11-21 17:11:09,387 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3965 transitions. [2022-11-21 17:11:09,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3965 transitions. [2022-11-21 17:11:09,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:09,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3965 transitions. [2022-11-21 17:11:09,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 165.20833333333334) internal successors, (3965), 24 states have internal predecessors, (3965), 0 states have call successors, (0), 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 17:11:09,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 193.0) internal successors, (4825), 25 states have internal predecessors, (4825), 0 states have call successors, (0), 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 17:11:09,403 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 193.0) internal successors, (4825), 25 states have internal predecessors, (4825), 0 states have call successors, (0), 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 17:11:09,403 INFO L175 Difference]: Start difference. First operand has 263 places, 229 transitions, 1097 flow. Second operand 24 states and 3965 transitions. [2022-11-21 17:11:09,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 352 transitions, 2347 flow [2022-11-21 17:11:09,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 352 transitions, 2170 flow, removed 78 selfloop flow, removed 5 redundant places. [2022-11-21 17:11:09,425 INFO L231 Difference]: Finished difference. Result has 290 places, 283 transitions, 1833 flow [2022-11-21 17:11:09,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1833, PETRI_PLACES=290, PETRI_TRANSITIONS=283} [2022-11-21 17:11:09,426 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 112 predicate places. [2022-11-21 17:11:09,426 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 283 transitions, 1833 flow [2022-11-21 17:11:09,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 164.14285714285714) internal successors, (2298), 14 states have internal predecessors, (2298), 0 states have call successors, (0), 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 17:11:09,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:09,427 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:09,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:11:09,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 17:11:09,646 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:11:09,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:09,646 INFO L85 PathProgramCache]: Analyzing trace with hash -999494276, now seen corresponding path program 2 times [2022-11-21 17:11:09,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:09,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396348101] [2022-11-21 17:11:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:09,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:10,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:10,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396348101] [2022-11-21 17:11:10,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396348101] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:11:10,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782293305] [2022-11-21 17:11:10,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:11:10,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:11:10,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:11:10,155 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:11:10,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 17:11:10,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:11:10,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:11:10,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 17:11:10,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:11:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:10,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:11:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:11,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782293305] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:11:11,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:11:11,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-21 17:11:11,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579444520] [2022-11-21 17:11:11,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:11:11,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:11:11,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:11,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:11:11,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:11:11,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 193 [2022-11-21 17:11:11,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 283 transitions, 1833 flow. Second operand has 24 states, 24 states have (on average 169.625) internal successors, (4071), 24 states have internal predecessors, (4071), 0 states have call successors, (0), 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 17:11:11,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:11,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 193 [2022-11-21 17:11:11,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:14,168 INFO L130 PetriNetUnfolder]: 458/8017 cut-off events. [2022-11-21 17:11:14,168 INFO L131 PetriNetUnfolder]: For 7921/7924 co-relation queries the response was YES. [2022-11-21 17:11:14,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13951 conditions, 8017 events. 458/8017 cut-off events. For 7921/7924 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 59730 event pairs, 128 based on Foata normal form. 48/7740 useless extension candidates. Maximal degree in co-relation 12917. Up to 405 conditions per place. [2022-11-21 17:11:14,222 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 176 selfloop transitions, 70 changer transitions 0/422 dead transitions. [2022-11-21 17:11:14,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 422 transitions, 3156 flow [2022-11-21 17:11:14,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 17:11:14,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 17:11:14,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5656 transitions. [2022-11-21 17:11:14,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8880514994504631 [2022-11-21 17:11:14,231 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5656 transitions. [2022-11-21 17:11:14,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5656 transitions. [2022-11-21 17:11:14,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:14,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5656 transitions. [2022-11-21 17:11:14,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 171.3939393939394) internal successors, (5656), 33 states have internal predecessors, (5656), 0 states have call successors, (0), 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 17:11:14,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 193.0) internal successors, (6562), 34 states have internal predecessors, (6562), 0 states have call successors, (0), 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 17:11:14,252 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 193.0) internal successors, (6562), 34 states have internal predecessors, (6562), 0 states have call successors, (0), 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 17:11:14,252 INFO L175 Difference]: Start difference. First operand has 290 places, 283 transitions, 1833 flow. Second operand 33 states and 5656 transitions. [2022-11-21 17:11:14,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 422 transitions, 3156 flow [2022-11-21 17:11:14,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 422 transitions, 3028 flow, removed 60 selfloop flow, removed 3 redundant places. [2022-11-21 17:11:14,296 INFO L231 Difference]: Finished difference. Result has 326 places, 317 transitions, 2349 flow [2022-11-21 17:11:14,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2349, PETRI_PLACES=326, PETRI_TRANSITIONS=317} [2022-11-21 17:11:14,297 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 148 predicate places. [2022-11-21 17:11:14,297 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 317 transitions, 2349 flow [2022-11-21 17:11:14,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 169.625) internal successors, (4071), 24 states have internal predecessors, (4071), 0 states have call successors, (0), 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 17:11:14,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:14,299 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:14,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 17:11:14,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 17:11:14,507 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 17:11:14,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:14,507 INFO L85 PathProgramCache]: Analyzing trace with hash 771360673, now seen corresponding path program 1 times [2022-11-21 17:11:14,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:14,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274210242] [2022-11-21 17:11:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:14,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 17:11:15,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:15,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274210242] [2022-11-21 17:11:15,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274210242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:11:15,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749576025] [2022-11-21 17:11:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:15,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:11:15,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:11:15,143 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:11:15,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 17:11:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:15,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 17:11:15,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:11:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-21 17:11:15,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:11:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-21 17:11:16,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749576025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:11:16,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:11:16,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-21 17:11:16,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53665456] [2022-11-21 17:11:16,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:11:16,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:11:16,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:11:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:11:16,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-21 17:11:16,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 317 transitions, 2349 flow. Second operand has 18 states, 18 states have (on average 164.11111111111111) internal successors, (2954), 18 states have internal predecessors, (2954), 0 states have call successors, (0), 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 17:11:16,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:16,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-21 17:11:16,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:20,485 INFO L130 PetriNetUnfolder]: 897/12187 cut-off events. [2022-11-21 17:11:20,485 INFO L131 PetriNetUnfolder]: For 12075/12075 co-relation queries the response was YES. [2022-11-21 17:11:20,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21931 conditions, 12187 events. 897/12187 cut-off events. For 12075/12075 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 109979 event pairs, 211 based on Foata normal form. 23/11736 useless extension candidates. Maximal degree in co-relation 20744. Up to 553 conditions per place. [2022-11-21 17:11:20,578 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 190 selfloop transitions, 204 changer transitions 0/550 dead transitions. [2022-11-21 17:11:20,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 550 transitions, 5029 flow [2022-11-21 17:11:20,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 17:11:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 17:11:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6254 transitions. [2022-11-21 17:11:20,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8527406599400055 [2022-11-21 17:11:20,586 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6254 transitions. [2022-11-21 17:11:20,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6254 transitions. [2022-11-21 17:11:20,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:20,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6254 transitions. [2022-11-21 17:11:20,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 164.57894736842104) internal successors, (6254), 38 states have internal predecessors, (6254), 0 states have call successors, (0), 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 17:11:20,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 193.0) internal successors, (7527), 39 states have internal predecessors, (7527), 0 states have call successors, (0), 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 17:11:20,608 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 193.0) internal successors, (7527), 39 states have internal predecessors, (7527), 0 states have call successors, (0), 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 17:11:20,609 INFO L175 Difference]: Start difference. First operand has 326 places, 317 transitions, 2349 flow. Second operand 38 states and 6254 transitions. [2022-11-21 17:11:20,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 550 transitions, 5029 flow [2022-11-21 17:11:20,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 550 transitions, 4907 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-11-21 17:11:20,680 INFO L231 Difference]: Finished difference. Result has 365 places, 436 transitions, 4404 flow [2022-11-21 17:11:20,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4404, PETRI_PLACES=365, PETRI_TRANSITIONS=436} [2022-11-21 17:11:20,681 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 187 predicate places. [2022-11-21 17:11:20,681 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 436 transitions, 4404 flow [2022-11-21 17:11:20,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 164.11111111111111) internal successors, (2954), 18 states have internal predecessors, (2954), 0 states have call successors, (0), 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 17:11:20,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:20,682 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:20,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-21 17:11:20,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 17:11:20,889 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:11:20,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash 964781691, now seen corresponding path program 2 times [2022-11-21 17:11:20,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:20,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773331520] [2022-11-21 17:11:20,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:20,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:21,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:21,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773331520] [2022-11-21 17:11:21,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773331520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:11:21,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894734132] [2022-11-21 17:11:21,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:11:21,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:11:21,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:11:21,472 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:11:21,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 17:11:21,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:11:21,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:11:21,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 17:11:21,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:11:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:22,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:11:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:22,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894734132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:11:22,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:11:22,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-11-21 17:11:22,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286470521] [2022-11-21 17:11:22,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:11:22,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 17:11:22,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:22,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 17:11:22,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-11-21 17:11:22,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-21 17:11:22,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 436 transitions, 4404 flow. Second operand has 26 states, 26 states have (on average 164.07692307692307) internal successors, (4266), 26 states have internal predecessors, (4266), 0 states have call successors, (0), 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 17:11:22,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:22,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-21 17:11:22,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:29,416 INFO L130 PetriNetUnfolder]: 1418/18164 cut-off events. [2022-11-21 17:11:29,416 INFO L131 PetriNetUnfolder]: For 22949/22949 co-relation queries the response was YES. [2022-11-21 17:11:29,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33620 conditions, 18164 events. 1418/18164 cut-off events. For 22949/22949 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 184209 event pairs, 195 based on Foata normal form. 90/17575 useless extension candidates. Maximal degree in co-relation 32395. Up to 804 conditions per place. [2022-11-21 17:11:29,567 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 308 selfloop transitions, 350 changer transitions 0/814 dead transitions. [2022-11-21 17:11:29,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 814 transitions, 9616 flow [2022-11-21 17:11:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-21 17:11:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-21 17:11:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8409 transitions. [2022-11-21 17:11:29,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8543127095397745 [2022-11-21 17:11:29,577 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8409 transitions. [2022-11-21 17:11:29,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8409 transitions. [2022-11-21 17:11:29,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:29,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8409 transitions. [2022-11-21 17:11:29,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 164.88235294117646) internal successors, (8409), 51 states have internal predecessors, (8409), 0 states have call successors, (0), 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 17:11:29,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 193.0) internal successors, (10036), 52 states have internal predecessors, (10036), 0 states have call successors, (0), 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 17:11:29,607 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 193.0) internal successors, (10036), 52 states have internal predecessors, (10036), 0 states have call successors, (0), 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 17:11:29,608 INFO L175 Difference]: Start difference. First operand has 365 places, 436 transitions, 4404 flow. Second operand 51 states and 8409 transitions. [2022-11-21 17:11:29,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 814 transitions, 9616 flow [2022-11-21 17:11:29,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 814 transitions, 9382 flow, removed 113 selfloop flow, removed 3 redundant places. [2022-11-21 17:11:29,765 INFO L231 Difference]: Finished difference. Result has 425 places, 622 transitions, 8061 flow [2022-11-21 17:11:29,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=4294, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8061, PETRI_PLACES=425, PETRI_TRANSITIONS=622} [2022-11-21 17:11:29,766 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 247 predicate places. [2022-11-21 17:11:29,766 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 622 transitions, 8061 flow [2022-11-21 17:11:29,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 164.07692307692307) internal successors, (4266), 26 states have internal predecessors, (4266), 0 states have call successors, (0), 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 17:11:29,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:29,768 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:29,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 17:11:29,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 17:11:29,974 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:11:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash -560137871, now seen corresponding path program 1 times [2022-11-21 17:11:29,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:29,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191838450] [2022-11-21 17:11:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:29,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-21 17:11:30,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:30,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191838450] [2022-11-21 17:11:30,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191838450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:11:30,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559289956] [2022-11-21 17:11:30,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:30,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:11:30,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:11:30,624 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:11:30,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 17:11:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 17:11:30,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:11:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-21 17:11:31,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:11:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-21 17:11:31,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559289956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:11:31,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:11:31,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2022-11-21 17:11:31,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961887182] [2022-11-21 17:11:31,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:11:31,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:11:31,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:31,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:11:31,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:11:31,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-21 17:11:31,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 622 transitions, 8061 flow. Second operand has 24 states, 24 states have (on average 164.5) internal successors, (3948), 24 states have internal predecessors, (3948), 0 states have call successors, (0), 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 17:11:31,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:31,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-21 17:11:31,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:43,345 INFO L130 PetriNetUnfolder]: 2240/27502 cut-off events. [2022-11-21 17:11:43,345 INFO L131 PetriNetUnfolder]: For 44823/44823 co-relation queries the response was YES. [2022-11-21 17:11:43,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52493 conditions, 27502 events. 2240/27502 cut-off events. For 44823/44823 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 308388 event pairs, 210 based on Foata normal form. 134/26613 useless extension candidates. Maximal degree in co-relation 51600. Up to 1292 conditions per place. [2022-11-21 17:11:43,750 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 196 selfloop transitions, 719 changer transitions 0/1071 dead transitions. [2022-11-21 17:11:43,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1071 transitions, 16172 flow [2022-11-21 17:11:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 17:11:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-21 17:11:43,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6409 transitions. [2022-11-21 17:11:43,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8514680483592401 [2022-11-21 17:11:43,762 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 6409 transitions. [2022-11-21 17:11:43,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 6409 transitions. [2022-11-21 17:11:43,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:43,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 6409 transitions. [2022-11-21 17:11:43,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 164.33333333333334) internal successors, (6409), 39 states have internal predecessors, (6409), 0 states have call successors, (0), 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 17:11:43,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 193.0) internal successors, (7720), 40 states have internal predecessors, (7720), 0 states have call successors, (0), 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 17:11:43,793 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 193.0) internal successors, (7720), 40 states have internal predecessors, (7720), 0 states have call successors, (0), 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 17:11:43,793 INFO L175 Difference]: Start difference. First operand has 425 places, 622 transitions, 8061 flow. Second operand 39 states and 6409 transitions. [2022-11-21 17:11:43,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1071 transitions, 16172 flow [2022-11-21 17:11:44,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 1071 transitions, 14983 flow, removed 357 selfloop flow, removed 16 redundant places. [2022-11-21 17:11:44,114 INFO L231 Difference]: Finished difference. Result has 444 places, 965 transitions, 14572 flow [2022-11-21 17:11:44,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=7102, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14572, PETRI_PLACES=444, PETRI_TRANSITIONS=965} [2022-11-21 17:11:44,115 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 266 predicate places. [2022-11-21 17:11:44,115 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 965 transitions, 14572 flow [2022-11-21 17:11:44,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 164.5) internal successors, (3948), 24 states have internal predecessors, (3948), 0 states have call successors, (0), 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 17:11:44,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:44,117 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:44,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:11:44,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:11:44,323 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:11:44,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:44,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1615953358, now seen corresponding path program 1 times [2022-11-21 17:11:44,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:44,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075150965] [2022-11-21 17:11:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:44,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-21 17:11:45,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:45,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075150965] [2022-11-21 17:11:45,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075150965] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:11:45,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330861785] [2022-11-21 17:11:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:45,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:11:45,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:11:45,037 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:11:45,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 17:11:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:45,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 17:11:45,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:11:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-21 17:11:45,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:11:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-21 17:11:46,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330861785] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:11:46,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:11:46,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-21 17:11:46,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116662745] [2022-11-21 17:11:46,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:11:46,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 17:11:46,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:46,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 17:11:46,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-21 17:11:46,467 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-21 17:11:46,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 965 transitions, 14572 flow. Second operand has 22 states, 22 states have (on average 164.45454545454547) internal successors, (3618), 22 states have internal predecessors, (3618), 0 states have call successors, (0), 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 17:11:46,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:46,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-21 17:11:46,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:12:05,867 INFO L130 PetriNetUnfolder]: 3411/40515 cut-off events. [2022-11-21 17:12:05,868 INFO L131 PetriNetUnfolder]: For 72495/72495 co-relation queries the response was YES. [2022-11-21 17:12:06,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79464 conditions, 40515 events. 3411/40515 cut-off events. For 72495/72495 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 494081 event pairs, 890 based on Foata normal form. 179/39156 useless extension candidates. Maximal degree in co-relation 78190. Up to 2104 conditions per place. [2022-11-21 17:12:06,425 INFO L137 encePairwiseOnDemand]: 182/193 looper letters, 245 selfloop transitions, 1190 changer transitions 0/1591 dead transitions. [2022-11-21 17:12:06,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1591 transitions, 26472 flow [2022-11-21 17:12:06,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 17:12:06,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 17:12:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5448 transitions. [2022-11-21 17:12:06,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8553933113518606 [2022-11-21 17:12:06,435 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5448 transitions. [2022-11-21 17:12:06,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5448 transitions. [2022-11-21 17:12:06,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:12:06,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5448 transitions. [2022-11-21 17:12:06,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 165.0909090909091) internal successors, (5448), 33 states have internal predecessors, (5448), 0 states have call successors, (0), 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 17:12:06,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 193.0) internal successors, (6562), 34 states have internal predecessors, (6562), 0 states have call successors, (0), 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 17:12:06,458 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 193.0) internal successors, (6562), 34 states have internal predecessors, (6562), 0 states have call successors, (0), 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 17:12:06,458 INFO L175 Difference]: Start difference. First operand has 444 places, 965 transitions, 14572 flow. Second operand 33 states and 5448 transitions. [2022-11-21 17:12:06,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1591 transitions, 26472 flow [2022-11-21 17:12:07,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1591 transitions, 25594 flow, removed 408 selfloop flow, removed 5 redundant places. [2022-11-21 17:12:07,049 INFO L231 Difference]: Finished difference. Result has 468 places, 1452 transitions, 25185 flow [2022-11-21 17:12:07,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=13639, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=710, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=25185, PETRI_PLACES=468, PETRI_TRANSITIONS=1452} [2022-11-21 17:12:07,050 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 290 predicate places. [2022-11-21 17:12:07,050 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1452 transitions, 25185 flow [2022-11-21 17:12:07,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 164.45454545454547) internal successors, (3618), 22 states have internal predecessors, (3618), 0 states have call successors, (0), 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 17:12:07,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:12:07,052 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:07,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 17:12:07,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:07,261 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 17:12:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:07,262 INFO L85 PathProgramCache]: Analyzing trace with hash 942369787, now seen corresponding path program 2 times [2022-11-21 17:12:07,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:07,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083548104] [2022-11-21 17:12:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:07,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 17:12:08,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:08,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083548104] [2022-11-21 17:12:08,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083548104] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:08,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477423182] [2022-11-21 17:12:08,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:12:08,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:08,469 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:08,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583e9bdb-d4dc-4f20-b016-b031def0523d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 17:12:08,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:12:08,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:12:08,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 17:12:08,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-21 17:12:09,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:12:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-21 17:12:10,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477423182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:12:10,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:12:10,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 33 [2022-11-21 17:12:10,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051527884] [2022-11-21 17:12:10,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:12:10,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-21 17:12:10,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-21 17:12:10,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 17:12:10,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-21 17:12:10,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1452 transitions, 25185 flow. Second operand has 34 states, 34 states have (on average 164.05882352941177) internal successors, (5578), 34 states have internal predecessors, (5578), 0 states have call successors, (0), 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 17:12:10,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:12:10,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-21 17:12:10,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand