./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:23:15,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:23:15,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:23:15,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:23:15,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:23:15,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:23:15,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:23:15,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:23:15,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:23:15,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:23:15,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:23:15,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:23:15,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:23:15,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:23:15,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:23:15,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:23:15,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:23:15,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:23:15,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:23:15,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:23:15,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:23:15,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:23:15,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:23:15,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:23:15,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:23:15,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:23:15,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:23:15,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:23:15,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:23:15,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:23:15,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:23:15,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:23:15,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:23:15,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:23:15,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:23:15,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:23:15,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:23:15,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:23:15,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:23:15,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:23:15,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:23:15,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:23:15,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:23:15,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:23:15,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:23:15,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:23:15,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:23:15,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:23:15,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:23:15,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:23:15,924 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:23:15,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:23:15,926 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:23:15,926 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:23:15,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:23:15,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:23:15,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:23:15,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:23:15,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:23:15,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:23:15,927 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:23:15,928 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:23:15,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:23:15,928 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:23:15,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:23:15,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:23:15,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:23:15,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:23:15,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:23:15,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:23:15,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:23:15,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:23:15,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:23:15,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:23:15,932 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:23:15,932 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:23:15,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:23:15,933 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_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 [2022-11-16 11:23:16,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:23:16,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:23:16,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:23:16,303 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:23:16,304 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:23:16,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-16 11:23:16,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/data/a4aaa4fa8/16c3bba4b6454281b4b6a9b5b8863154/FLAGcad71dee9 [2022-11-16 11:23:16,887 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:23:16,888 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-16 11:23:16,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/data/a4aaa4fa8/16c3bba4b6454281b4b6a9b5b8863154/FLAGcad71dee9 [2022-11-16 11:23:17,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/data/a4aaa4fa8/16c3bba4b6454281b4b6a9b5b8863154 [2022-11-16 11:23:17,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:23:17,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:23:17,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:23:17,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:23:17,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:23:17,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb53a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17, skipping insertion in model container [2022-11-16 11:23:17,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:23:17,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:23:17,539 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-16 11:23:17,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:23:17,552 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:23:17,581 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-16 11:23:17,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:23:17,598 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:23:17,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17 WrapperNode [2022-11-16 11:23:17,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:23:17,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:23:17,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:23:17,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:23:17,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,666 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 206 [2022-11-16 11:23:17,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:23:17,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:23:17,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:23:17,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:23:17,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,731 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:23:17,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:23:17,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:23:17,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:23:17,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:23:17,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:17,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:23:17,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:23:17,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:23:17,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:23:17,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:23:17,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:23:17,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:23:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:23:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:23:17,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:23:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:23:17,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:23:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:23:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:23:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:23:17,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:23:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:23:17,826 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:23:18,036 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:23:18,038 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:23:18,689 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:23:18,700 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:23:18,701 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-16 11:23:18,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:23:18 BoogieIcfgContainer [2022-11-16 11:23:18,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:23:18,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:23:18,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:23:18,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:23:18,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:23:17" (1/3) ... [2022-11-16 11:23:18,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756b5720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:23:18, skipping insertion in model container [2022-11-16 11:23:18,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17" (2/3) ... [2022-11-16 11:23:18,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756b5720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:23:18, skipping insertion in model container [2022-11-16 11:23:18,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:23:18" (3/3) ... [2022-11-16 11:23:18,721 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2022-11-16 11:23:18,731 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:23:18,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:23:18,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-16 11:23:18,741 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:23:18,865 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:23:18,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 335 transitions, 686 flow [2022-11-16 11:23:19,096 INFO L130 PetriNetUnfolder]: 27/333 cut-off events. [2022-11-16 11:23:19,096 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:23:19,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 333 events. 27/333 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 455 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2022-11-16 11:23:19,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 335 transitions, 686 flow [2022-11-16 11:23:19,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 309 transitions, 630 flow [2022-11-16 11:23:19,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:23:19,136 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;@646c228f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:23:19,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-16 11:23:19,149 INFO L130 PetriNetUnfolder]: 2/48 cut-off events. [2022-11-16 11:23:19,156 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:23:19,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:19,157 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] [2022-11-16 11:23:19,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:23:19,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:19,164 INFO L85 PathProgramCache]: Analyzing trace with hash 772161780, now seen corresponding path program 1 times [2022-11-16 11:23:19,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:19,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940703778] [2022-11-16 11:23:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:19,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:19,281 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:23:19,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888078215] [2022-11-16 11:23:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:19,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:19,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:19,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:23:19,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:23:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:19,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:23:19,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:19,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:19,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:19,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940703778] [2022-11-16 11:23:19,666 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:23:19,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888078215] [2022-11-16 11:23:19,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888078215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:19,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:19,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:23:19,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077328072] [2022-11-16 11:23:19,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:19,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:23:19,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:19,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:23:19,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:23:19,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 335 [2022-11-16 11:23:19,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 309 transitions, 630 flow. Second operand has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:19,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:19,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 335 [2022-11-16 11:23:19,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:20,563 INFO L130 PetriNetUnfolder]: 26/606 cut-off events. [2022-11-16 11:23:20,563 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-16 11:23:20,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 606 events. 26/606 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2207 event pairs, 4 based on Foata normal form. 38/537 useless extension candidates. Maximal degree in co-relation 525. Up to 67 conditions per place. [2022-11-16 11:23:20,576 INFO L137 encePairwiseOnDemand]: 302/335 looper letters, 104 selfloop transitions, 15 changer transitions 20/349 dead transitions. [2022-11-16 11:23:20,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 349 transitions, 1000 flow [2022-11-16 11:23:20,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:23:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:23:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3152 transitions. [2022-11-16 11:23:20,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7237657864523536 [2022-11-16 11:23:20,607 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3152 transitions. [2022-11-16 11:23:20,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3152 transitions. [2022-11-16 11:23:20,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:20,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3152 transitions. [2022-11-16 11:23:20,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 242.46153846153845) internal successors, (3152), 13 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:20,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 335.0) internal successors, (4690), 14 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:20,651 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 335.0) internal successors, (4690), 14 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:20,653 INFO L175 Difference]: Start difference. First operand has 290 places, 309 transitions, 630 flow. Second operand 13 states and 3152 transitions. [2022-11-16 11:23:20,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 349 transitions, 1000 flow [2022-11-16 11:23:20,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 349 transitions, 984 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:23:20,672 INFO L231 Difference]: Finished difference. Result has 298 places, 283 transitions, 613 flow [2022-11-16 11:23:20,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=613, PETRI_PLACES=298, PETRI_TRANSITIONS=283} [2022-11-16 11:23:20,680 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 8 predicate places. [2022-11-16 11:23:20,681 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 283 transitions, 613 flow [2022-11-16 11:23:20,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:20,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:20,683 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] [2022-11-16 11:23:20,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:23:20,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 11:23:20,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:23:20,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:20,892 INFO L85 PathProgramCache]: Analyzing trace with hash 21358096, now seen corresponding path program 1 times [2022-11-16 11:23:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:20,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545196063] [2022-11-16 11:23:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:20,914 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:23:20,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192893434] [2022-11-16 11:23:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:20,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:20,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:20,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:23:20,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:23:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:21,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:23:21,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:21,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:21,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:21,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545196063] [2022-11-16 11:23:21,109 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:23:21,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192893434] [2022-11-16 11:23:21,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192893434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:21,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:21,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:21,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87891548] [2022-11-16 11:23:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:21,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:21,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:21,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:21,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:21,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 335 [2022-11-16 11:23:21,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 283 transitions, 613 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:21,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:21,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 335 [2022-11-16 11:23:21,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:21,334 INFO L130 PetriNetUnfolder]: 24/584 cut-off events. [2022-11-16 11:23:21,334 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-16 11:23:21,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 584 events. 24/584 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2119 event pairs, 4 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 330. Up to 28 conditions per place. [2022-11-16 11:23:21,338 INFO L137 encePairwiseOnDemand]: 327/335 looper letters, 38 selfloop transitions, 6 changer transitions 0/295 dead transitions. [2022-11-16 11:23:21,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 295 transitions, 723 flow [2022-11-16 11:23:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:23:21,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:23:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1471 transitions. [2022-11-16 11:23:21,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8782089552238806 [2022-11-16 11:23:21,343 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1471 transitions. [2022-11-16 11:23:21,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1471 transitions. [2022-11-16 11:23:21,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:21,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1471 transitions. [2022-11-16 11:23:21,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 294.2) internal successors, (1471), 5 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:21,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:21,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:21,354 INFO L175 Difference]: Start difference. First operand has 298 places, 283 transitions, 613 flow. Second operand 5 states and 1471 transitions. [2022-11-16 11:23:21,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 295 transitions, 723 flow [2022-11-16 11:23:21,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 295 transitions, 705 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 11:23:21,363 INFO L231 Difference]: Finished difference. Result has 284 places, 281 transitions, 597 flow [2022-11-16 11:23:21,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=597, PETRI_PLACES=284, PETRI_TRANSITIONS=281} [2022-11-16 11:23:21,364 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, -6 predicate places. [2022-11-16 11:23:21,364 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 281 transitions, 597 flow [2022-11-16 11:23:21,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:21,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:21,366 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] [2022-11-16 11:23:21,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:21,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 11:23:21,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:23:21,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:21,577 INFO L85 PathProgramCache]: Analyzing trace with hash -326677687, now seen corresponding path program 1 times [2022-11-16 11:23:21,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:21,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226985507] [2022-11-16 11:23:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:21,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:21,598 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:23:21,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035336093] [2022-11-16 11:23:21,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:21,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:21,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:21,610 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:23:21,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:23:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:21,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:23:21,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:22,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:22,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:22,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226985507] [2022-11-16 11:23:22,573 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:23:22,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035336093] [2022-11-16 11:23:22,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035336093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:22,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:22,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:23:22,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702395548] [2022-11-16 11:23:22,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:22,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:23:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:22,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:23:22,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:23:22,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 335 [2022-11-16 11:23:22,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 281 transitions, 597 flow. Second operand has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:22,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:22,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 335 [2022-11-16 11:23:22,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:24,626 INFO L130 PetriNetUnfolder]: 46/605 cut-off events. [2022-11-16 11:23:24,626 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-16 11:23:24,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 605 events. 46/605 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2447 event pairs, 26 based on Foata normal form. 1/524 useless extension candidates. Maximal degree in co-relation 418. Up to 99 conditions per place. [2022-11-16 11:23:24,629 INFO L137 encePairwiseOnDemand]: 316/335 looper letters, 137 selfloop transitions, 21 changer transitions 0/345 dead transitions. [2022-11-16 11:23:24,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 345 transitions, 1043 flow [2022-11-16 11:23:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 11:23:24,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 11:23:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4239 transitions. [2022-11-16 11:23:24,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6326865671641791 [2022-11-16 11:23:24,639 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4239 transitions. [2022-11-16 11:23:24,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4239 transitions. [2022-11-16 11:23:24,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:24,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4239 transitions. [2022-11-16 11:23:24,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 211.95) internal successors, (4239), 20 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:24,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 335.0) internal successors, (7035), 21 states have internal predecessors, (7035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:24,665 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 335.0) internal successors, (7035), 21 states have internal predecessors, (7035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:24,666 INFO L175 Difference]: Start difference. First operand has 284 places, 281 transitions, 597 flow. Second operand 20 states and 4239 transitions. [2022-11-16 11:23:24,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 345 transitions, 1043 flow [2022-11-16 11:23:24,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 345 transitions, 1031 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:23:24,673 INFO L231 Difference]: Finished difference. Result has 302 places, 284 transitions, 647 flow [2022-11-16 11:23:24,674 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=647, PETRI_PLACES=302, PETRI_TRANSITIONS=284} [2022-11-16 11:23:24,674 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 12 predicate places. [2022-11-16 11:23:24,675 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 284 transitions, 647 flow [2022-11-16 11:23:24,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:24,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:24,676 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] [2022-11-16 11:23:24,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:24,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:24,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:23:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1537073025, now seen corresponding path program 1 times [2022-11-16 11:23:24,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:24,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63027668] [2022-11-16 11:23:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:24,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:24,903 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:23:24,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762140814] [2022-11-16 11:23:24,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:24,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:24,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:24,905 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:23:24,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:23:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:24,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:23:24,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:25,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:25,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:25,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63027668] [2022-11-16 11:23:25,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:23:25,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762140814] [2022-11-16 11:23:25,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762140814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:25,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:25,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:23:25,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760403113] [2022-11-16 11:23:25,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:25,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:23:25,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:25,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:23:25,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:23:25,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 335 [2022-11-16 11:23:25,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 284 transitions, 647 flow. Second operand has 10 states, 10 states have (on average 208.5) internal successors, (2085), 10 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:25,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:25,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 335 [2022-11-16 11:23:25,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:26,309 INFO L130 PetriNetUnfolder]: 46/604 cut-off events. [2022-11-16 11:23:26,309 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-16 11:23:26,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 604 events. 46/604 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2464 event pairs, 26 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 436. Up to 95 conditions per place. [2022-11-16 11:23:26,313 INFO L137 encePairwiseOnDemand]: 318/335 looper letters, 137 selfloop transitions, 18 changer transitions 0/344 dead transitions. [2022-11-16 11:23:26,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 344 transitions, 1079 flow [2022-11-16 11:23:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:23:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:23:26,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3864 transitions. [2022-11-16 11:23:26,324 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6407960199004975 [2022-11-16 11:23:26,324 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3864 transitions. [2022-11-16 11:23:26,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3864 transitions. [2022-11-16 11:23:26,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:26,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3864 transitions. [2022-11-16 11:23:26,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 214.66666666666666) internal successors, (3864), 18 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:26,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 335.0) internal successors, (6365), 19 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:26,351 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 335.0) internal successors, (6365), 19 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:26,351 INFO L175 Difference]: Start difference. First operand has 302 places, 284 transitions, 647 flow. Second operand 18 states and 3864 transitions. [2022-11-16 11:23:26,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 344 transitions, 1079 flow [2022-11-16 11:23:26,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 344 transitions, 1041 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-16 11:23:26,360 INFO L231 Difference]: Finished difference. Result has 303 places, 283 transitions, 641 flow [2022-11-16 11:23:26,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=641, PETRI_PLACES=303, PETRI_TRANSITIONS=283} [2022-11-16 11:23:26,362 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 13 predicate places. [2022-11-16 11:23:26,363 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 283 transitions, 641 flow [2022-11-16 11:23:26,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 208.5) internal successors, (2085), 10 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:26,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:26,365 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] [2022-11-16 11:23:26,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:26,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:26,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:23:26,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:26,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1396878865, now seen corresponding path program 1 times [2022-11-16 11:23:26,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:26,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037839704] [2022-11-16 11:23:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:26,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:26,594 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:23:26,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382525679] [2022-11-16 11:23:26,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:26,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:26,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:26,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:23:26,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:23:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:26,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:23:26,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:26,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:26,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:26,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037839704] [2022-11-16 11:23:26,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:23:26,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382525679] [2022-11-16 11:23:26,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382525679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:26,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:26,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:26,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717152961] [2022-11-16 11:23:26,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:26,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:26,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:26,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:26,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:26,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 335 [2022-11-16 11:23:26,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 283 transitions, 641 flow. Second operand has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:26,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:26,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 335 [2022-11-16 11:23:26,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:26,953 INFO L130 PetriNetUnfolder]: 26/830 cut-off events. [2022-11-16 11:23:26,954 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-16 11:23:26,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 830 events. 26/830 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3798 event pairs, 0 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 475. Up to 79 conditions per place. [2022-11-16 11:23:26,959 INFO L137 encePairwiseOnDemand]: 315/335 looper letters, 56 selfloop transitions, 17 changer transitions 0/316 dead transitions. [2022-11-16 11:23:26,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 316 transitions, 857 flow [2022-11-16 11:23:26,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:23:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:23:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1451 transitions. [2022-11-16 11:23:26,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.866268656716418 [2022-11-16 11:23:26,963 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1451 transitions. [2022-11-16 11:23:26,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1451 transitions. [2022-11-16 11:23:26,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:26,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1451 transitions. [2022-11-16 11:23:26,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:26,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:26,988 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:26,988 INFO L175 Difference]: Start difference. First operand has 303 places, 283 transitions, 641 flow. Second operand 5 states and 1451 transitions. [2022-11-16 11:23:26,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 316 transitions, 857 flow [2022-11-16 11:23:26,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 316 transitions, 822 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-16 11:23:26,998 INFO L231 Difference]: Finished difference. Result has 295 places, 297 transitions, 736 flow [2022-11-16 11:23:26,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=736, PETRI_PLACES=295, PETRI_TRANSITIONS=297} [2022-11-16 11:23:27,000 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 5 predicate places. [2022-11-16 11:23:27,001 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 297 transitions, 736 flow [2022-11-16 11:23:27,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:27,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:27,005 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:27,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:27,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:27,211 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:23:27,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:27,212 INFO L85 PathProgramCache]: Analyzing trace with hash -353571270, now seen corresponding path program 1 times [2022-11-16 11:23:27,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:27,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314240693] [2022-11-16 11:23:27,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:27,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:27,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:23:27,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330259884] [2022-11-16 11:23:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:27,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:27,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:27,232 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:23:27,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:23:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:27,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:23:27,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:27,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:27,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314240693] [2022-11-16 11:23:27,351 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:23:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330259884] [2022-11-16 11:23:27,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330259884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:27,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:27,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:27,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81730682] [2022-11-16 11:23:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:27,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:27,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:27,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:27,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:27,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 335 [2022-11-16 11:23:27,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 297 transitions, 736 flow. Second operand has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:27,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:27,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 335 [2022-11-16 11:23:27,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:27,525 INFO L130 PetriNetUnfolder]: 26/818 cut-off events. [2022-11-16 11:23:27,526 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-11-16 11:23:27,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 818 events. 26/818 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3731 event pairs, 0 based on Foata normal form. 12/742 useless extension candidates. Maximal degree in co-relation 593. Up to 70 conditions per place. [2022-11-16 11:23:27,530 INFO L137 encePairwiseOnDemand]: 321/335 looper letters, 29 selfloop transitions, 19 changer transitions 0/291 dead transitions. [2022-11-16 11:23:27,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 291 transitions, 802 flow [2022-11-16 11:23:27,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:23:27,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-16 11:23:27,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8507462686567164 [2022-11-16 11:23:27,552 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-16 11:23:27,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-16 11:23:27,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:27,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-16 11:23:27,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:27,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:27,558 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:27,558 INFO L175 Difference]: Start difference. First operand has 295 places, 297 transitions, 736 flow. Second operand 4 states and 1140 transitions. [2022-11-16 11:23:27,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 291 transitions, 802 flow [2022-11-16 11:23:27,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 291 transitions, 786 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:23:27,568 INFO L231 Difference]: Finished difference. Result has 293 places, 291 transitions, 728 flow [2022-11-16 11:23:27,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=728, PETRI_PLACES=293, PETRI_TRANSITIONS=291} [2022-11-16 11:23:27,572 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 3 predicate places. [2022-11-16 11:23:27,572 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 291 transitions, 728 flow [2022-11-16 11:23:27,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:27,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:27,573 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:27,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:27,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:27,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:23:27,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:27,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1657096805, now seen corresponding path program 1 times [2022-11-16 11:23:27,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:27,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315276280] [2022-11-16 11:23:27,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:27,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:27,803 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:23:27,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577849513] [2022-11-16 11:23:27,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:27,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:27,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:27,805 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:23:27,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:23:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:27,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:23:27,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:27,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:28,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:28,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315276280] [2022-11-16 11:23:28,033 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:23:28,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577849513] [2022-11-16 11:23:28,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577849513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:23:28,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:23:28,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-16 11:23:28,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828324087] [2022-11-16 11:23:28,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:28,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:23:28,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:28,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:23:28,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:23:28,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 335 [2022-11-16 11:23:28,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 291 transitions, 728 flow. Second operand has 10 states, 10 states have (on average 277.5) internal successors, (2775), 10 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:28,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:28,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 335 [2022-11-16 11:23:28,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:28,669 INFO L130 PetriNetUnfolder]: 62/1766 cut-off events. [2022-11-16 11:23:28,670 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2022-11-16 11:23:28,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 1766 events. 62/1766 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 11589 event pairs, 0 based on Foata normal form. 18/1564 useless extension candidates. Maximal degree in co-relation 1134. Up to 67 conditions per place. [2022-11-16 11:23:28,681 INFO L137 encePairwiseOnDemand]: 315/335 looper letters, 104 selfloop transitions, 50 changer transitions 0/397 dead transitions. [2022-11-16 11:23:28,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 397 transitions, 1366 flow [2022-11-16 11:23:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:23:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:23:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4013 transitions. [2022-11-16 11:23:28,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8556503198294243 [2022-11-16 11:23:28,690 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4013 transitions. [2022-11-16 11:23:28,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4013 transitions. [2022-11-16 11:23:28,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:28,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4013 transitions. [2022-11-16 11:23:28,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 286.64285714285717) internal successors, (4013), 14 states have internal predecessors, (4013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:28,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:28,708 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:28,708 INFO L175 Difference]: Start difference. First operand has 293 places, 291 transitions, 728 flow. Second operand 14 states and 4013 transitions. [2022-11-16 11:23:28,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 397 transitions, 1366 flow [2022-11-16 11:23:28,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 397 transitions, 1286 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:23:28,718 INFO L231 Difference]: Finished difference. Result has 307 places, 324 transitions, 991 flow [2022-11-16 11:23:28,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=991, PETRI_PLACES=307, PETRI_TRANSITIONS=324} [2022-11-16 11:23:28,719 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 17 predicate places. [2022-11-16 11:23:28,719 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 324 transitions, 991 flow [2022-11-16 11:23:28,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 277.5) internal successors, (2775), 10 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:28,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:28,720 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 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] [2022-11-16 11:23:28,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:28,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:28,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:23:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:28,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1051192175, now seen corresponding path program 2 times [2022-11-16 11:23:28,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:28,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487220301] [2022-11-16 11:23:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:28,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:28,972 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:23:28,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861951133] [2022-11-16 11:23:28,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:23:28,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:23:28,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:28,979 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:23:29,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:23:29,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:23:29,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:29,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:23:29,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:31,458 WARN L855 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) .cse0)))) is different from true [2022-11-16 11:23:33,382 WARN L855 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post27#1| 1) .cse0)))) is different from true [2022-11-16 11:23:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 20 not checked. [2022-11-16 11:23:33,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:23:59,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:59,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487220301] [2022-11-16 11:23:59,339 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:23:59,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861951133] [2022-11-16 11:23:59,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861951133] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:23:59,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:23:59,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-16 11:23:59,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035530542] [2022-11-16 11:23:59,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:59,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:23:59,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:59,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:23:59,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=78, Unknown=14, NotChecked=38, Total=156 [2022-11-16 11:23:59,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 335 [2022-11-16 11:23:59,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 324 transitions, 991 flow. Second operand has 13 states, 13 states have (on average 216.69230769230768) internal successors, (2817), 13 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:59,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:59,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 335 [2022-11-16 11:23:59,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:30,796 WARN L233 SmtUtils]: Spent 9.74s on a formula simplification. DAG size of input: 18 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:24:45,206 INFO L130 PetriNetUnfolder]: 812/4184 cut-off events. [2022-11-16 11:24:45,206 INFO L131 PetriNetUnfolder]: For 527/527 co-relation queries the response was YES. [2022-11-16 11:24:45,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6363 conditions, 4184 events. 812/4184 cut-off events. For 527/527 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 35620 event pairs, 410 based on Foata normal form. 2/3166 useless extension candidates. Maximal degree in co-relation 5026. Up to 1325 conditions per place. [2022-11-16 11:24:45,232 INFO L137 encePairwiseOnDemand]: 310/335 looper letters, 142 selfloop transitions, 37 changer transitions 0/365 dead transitions. [2022-11-16 11:24:45,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 365 transitions, 1431 flow [2022-11-16 11:24:45,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:24:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:24:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2909 transitions. [2022-11-16 11:24:45,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6679678530424799 [2022-11-16 11:24:45,239 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2909 transitions. [2022-11-16 11:24:45,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2909 transitions. [2022-11-16 11:24:45,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:45,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2909 transitions. [2022-11-16 11:24:45,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 223.76923076923077) internal successors, (2909), 13 states have internal predecessors, (2909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:45,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 335.0) internal successors, (4690), 14 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:45,254 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 335.0) internal successors, (4690), 14 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:45,255 INFO L175 Difference]: Start difference. First operand has 307 places, 324 transitions, 991 flow. Second operand 13 states and 2909 transitions. [2022-11-16 11:24:45,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 365 transitions, 1431 flow [2022-11-16 11:24:45,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 365 transitions, 1315 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 11:24:45,263 INFO L231 Difference]: Finished difference. Result has 315 places, 327 transitions, 982 flow [2022-11-16 11:24:45,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=982, PETRI_PLACES=315, PETRI_TRANSITIONS=327} [2022-11-16 11:24:45,267 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 25 predicate places. [2022-11-16 11:24:45,267 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 327 transitions, 982 flow [2022-11-16 11:24:45,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 216.69230769230768) internal successors, (2817), 13 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:45,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:45,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:45,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:45,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:45,475 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:24:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:45,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1175049801, now seen corresponding path program 1 times [2022-11-16 11:24:45,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:45,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238306464] [2022-11-16 11:24:45,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:45,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:45,496 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:45,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509515519] [2022-11-16 11:24:45,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:45,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:45,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:45,498 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:45,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:24:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:45,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:24:45,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:45,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:45,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:45,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:45,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238306464] [2022-11-16 11:24:45,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:45,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509515519] [2022-11-16 11:24:45,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509515519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:45,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:45,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:24:45,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946603807] [2022-11-16 11:24:45,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:45,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:24:45,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:45,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:24:45,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:24:45,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 335 [2022-11-16 11:24:45,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 327 transitions, 982 flow. Second operand has 7 states, 7 states have (on average 269.42857142857144) internal successors, (1886), 7 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:45,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:45,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 335 [2022-11-16 11:24:45,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:47,055 INFO L130 PetriNetUnfolder]: 330/5172 cut-off events. [2022-11-16 11:24:47,055 INFO L131 PetriNetUnfolder]: For 736/736 co-relation queries the response was YES. [2022-11-16 11:24:47,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7089 conditions, 5172 events. 330/5172 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 47335 event pairs, 126 based on Foata normal form. 0/4382 useless extension candidates. Maximal degree in co-relation 5516. Up to 341 conditions per place. [2022-11-16 11:24:47,085 INFO L137 encePairwiseOnDemand]: 319/335 looper letters, 146 selfloop transitions, 34 changer transitions 0/423 dead transitions. [2022-11-16 11:24:47,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 423 transitions, 1693 flow [2022-11-16 11:24:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:24:47,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:24:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4119 transitions. [2022-11-16 11:24:47,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8197014925373134 [2022-11-16 11:24:47,094 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4119 transitions. [2022-11-16 11:24:47,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4119 transitions. [2022-11-16 11:24:47,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:47,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4119 transitions. [2022-11-16 11:24:47,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 274.6) internal successors, (4119), 15 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:47,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 335.0) internal successors, (5360), 16 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:47,116 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 335.0) internal successors, (5360), 16 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:47,117 INFO L175 Difference]: Start difference. First operand has 315 places, 327 transitions, 982 flow. Second operand 15 states and 4119 transitions. [2022-11-16 11:24:47,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 423 transitions, 1693 flow [2022-11-16 11:24:47,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 423 transitions, 1644 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 11:24:47,127 INFO L231 Difference]: Finished difference. Result has 328 places, 349 transitions, 1151 flow [2022-11-16 11:24:47,127 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1151, PETRI_PLACES=328, PETRI_TRANSITIONS=349} [2022-11-16 11:24:47,129 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 38 predicate places. [2022-11-16 11:24:47,129 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 349 transitions, 1151 flow [2022-11-16 11:24:47,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 269.42857142857144) internal successors, (1886), 7 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:47,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:47,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:47,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:47,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:47,337 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:24:47,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:47,338 INFO L85 PathProgramCache]: Analyzing trace with hash 368565, now seen corresponding path program 1 times [2022-11-16 11:24:47,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:47,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006849056] [2022-11-16 11:24:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:47,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:47,364 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:47,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902981262] [2022-11-16 11:24:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:47,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:47,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:47,379 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:47,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:24:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:24:47,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:47,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:47,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:47,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006849056] [2022-11-16 11:24:47,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:47,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902981262] [2022-11-16 11:24:47,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902981262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:47,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:47,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:47,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469158711] [2022-11-16 11:24:47,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:47,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:24:47,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:47,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:24:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:24:47,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 335 [2022-11-16 11:24:47,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 349 transitions, 1151 flow. Second operand has 5 states, 5 states have (on average 275.4) internal successors, (1377), 5 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:47,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:47,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 335 [2022-11-16 11:24:47,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:48,969 INFO L130 PetriNetUnfolder]: 506/5730 cut-off events. [2022-11-16 11:24:48,970 INFO L131 PetriNetUnfolder]: For 1021/1021 co-relation queries the response was YES. [2022-11-16 11:24:48,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8270 conditions, 5730 events. 506/5730 cut-off events. For 1021/1021 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 56110 event pairs, 318 based on Foata normal form. 0/4984 useless extension candidates. Maximal degree in co-relation 8129. Up to 1169 conditions per place. [2022-11-16 11:24:49,026 INFO L137 encePairwiseOnDemand]: 328/335 looper letters, 46 selfloop transitions, 6 changer transitions 0/362 dead transitions. [2022-11-16 11:24:49,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 362 transitions, 1286 flow [2022-11-16 11:24:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:24:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:24:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1685 transitions. [2022-11-16 11:24:49,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383084577114428 [2022-11-16 11:24:49,040 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1685 transitions. [2022-11-16 11:24:49,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1685 transitions. [2022-11-16 11:24:49,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:49,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1685 transitions. [2022-11-16 11:24:49,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.8333333333333) internal successors, (1685), 6 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:49,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:49,056 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:49,057 INFO L175 Difference]: Start difference. First operand has 328 places, 349 transitions, 1151 flow. Second operand 6 states and 1685 transitions. [2022-11-16 11:24:49,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 362 transitions, 1286 flow [2022-11-16 11:24:49,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 362 transitions, 1286 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:24:49,072 INFO L231 Difference]: Finished difference. Result has 336 places, 352 transitions, 1183 flow [2022-11-16 11:24:49,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1183, PETRI_PLACES=336, PETRI_TRANSITIONS=352} [2022-11-16 11:24:49,073 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 46 predicate places. [2022-11-16 11:24:49,073 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 352 transitions, 1183 flow [2022-11-16 11:24:49,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.4) internal successors, (1377), 5 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:49,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:49,075 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:49,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:49,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:24:49,282 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:24:49,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash 411188043, now seen corresponding path program 1 times [2022-11-16 11:24:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:49,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557721312] [2022-11-16 11:24:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:49,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:49,312 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:49,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46591477] [2022-11-16 11:24:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:49,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:49,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:49,319 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:49,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:24:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:49,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:24:49,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-16 11:24:49,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:49,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:49,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557721312] [2022-11-16 11:24:49,570 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:49,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46591477] [2022-11-16 11:24:49,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46591477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:49,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:49,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:24:49,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771859906] [2022-11-16 11:24:49,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:49,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:24:49,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:49,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:24:49,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:24:49,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 335 [2022-11-16 11:24:49,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 352 transitions, 1183 flow. Second operand has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:49,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:49,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 335 [2022-11-16 11:24:49,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:50,840 INFO L130 PetriNetUnfolder]: 206/4472 cut-off events. [2022-11-16 11:24:50,840 INFO L131 PetriNetUnfolder]: For 1462/1476 co-relation queries the response was YES. [2022-11-16 11:24:50,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6543 conditions, 4472 events. 206/4472 cut-off events. For 1462/1476 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 38954 event pairs, 50 based on Foata normal form. 16/4010 useless extension candidates. Maximal degree in co-relation 6438. Up to 271 conditions per place. [2022-11-16 11:24:50,860 INFO L137 encePairwiseOnDemand]: 319/335 looper letters, 118 selfloop transitions, 28 changer transitions 0/400 dead transitions. [2022-11-16 11:24:50,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 400 transitions, 1649 flow [2022-11-16 11:24:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:24:50,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:24:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3896 transitions. [2022-11-16 11:24:50,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8307036247334755 [2022-11-16 11:24:50,866 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3896 transitions. [2022-11-16 11:24:50,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3896 transitions. [2022-11-16 11:24:50,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:50,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3896 transitions. [2022-11-16 11:24:50,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 278.2857142857143) internal successors, (3896), 14 states have internal predecessors, (3896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:50,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:50,884 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:50,884 INFO L175 Difference]: Start difference. First operand has 336 places, 352 transitions, 1183 flow. Second operand 14 states and 3896 transitions. [2022-11-16 11:24:50,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 400 transitions, 1649 flow [2022-11-16 11:24:50,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 400 transitions, 1623 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-11-16 11:24:50,897 INFO L231 Difference]: Finished difference. Result has 345 places, 348 transitions, 1202 flow [2022-11-16 11:24:50,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1202, PETRI_PLACES=345, PETRI_TRANSITIONS=348} [2022-11-16 11:24:50,899 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 55 predicate places. [2022-11-16 11:24:50,899 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 348 transitions, 1202 flow [2022-11-16 11:24:50,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:50,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:50,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:50,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:51,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:24:51,106 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:24:51,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:51,106 INFO L85 PathProgramCache]: Analyzing trace with hash -152480300, now seen corresponding path program 1 times [2022-11-16 11:24:51,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:51,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722018527] [2022-11-16 11:24:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:51,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:51,142 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:51,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669563982] [2022-11-16 11:24:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:51,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:51,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:51,145 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:51,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:24:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:51,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:24:51,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:51,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:51,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:51,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722018527] [2022-11-16 11:24:51,346 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:51,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669563982] [2022-11-16 11:24:51,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669563982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:51,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:51,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:24:51,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934513529] [2022-11-16 11:24:51,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:51,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:24:51,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:51,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:24:51,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:24:51,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-16 11:24:51,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 348 transitions, 1202 flow. Second operand has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:51,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:51,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-16 11:24:51,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:52,127 INFO L130 PetriNetUnfolder]: 120/4092 cut-off events. [2022-11-16 11:24:52,127 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2022-11-16 11:24:52,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5762 conditions, 4092 events. 120/4092 cut-off events. For 713/713 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 34969 event pairs, 0 based on Foata normal form. 0/3720 useless extension candidates. Maximal degree in co-relation 5379. Up to 282 conditions per place. [2022-11-16 11:24:52,148 INFO L137 encePairwiseOnDemand]: 329/335 looper letters, 24 selfloop transitions, 5 changer transitions 0/359 dead transitions. [2022-11-16 11:24:52,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 359 transitions, 1286 flow [2022-11-16 11:24:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:24:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:24:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1525 transitions. [2022-11-16 11:24:52,152 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9104477611940298 [2022-11-16 11:24:52,152 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1525 transitions. [2022-11-16 11:24:52,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1525 transitions. [2022-11-16 11:24:52,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:52,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1525 transitions. [2022-11-16 11:24:52,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:52,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:52,160 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:52,161 INFO L175 Difference]: Start difference. First operand has 345 places, 348 transitions, 1202 flow. Second operand 5 states and 1525 transitions. [2022-11-16 11:24:52,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 359 transitions, 1286 flow [2022-11-16 11:24:52,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 359 transitions, 1238 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 11:24:52,175 INFO L231 Difference]: Finished difference. Result has 344 places, 351 transitions, 1188 flow [2022-11-16 11:24:52,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1188, PETRI_PLACES=344, PETRI_TRANSITIONS=351} [2022-11-16 11:24:52,176 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 54 predicate places. [2022-11-16 11:24:52,176 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 351 transitions, 1188 flow [2022-11-16 11:24:52,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:52,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:52,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:52,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:52,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:52,383 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:24:52,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:52,384 INFO L85 PathProgramCache]: Analyzing trace with hash -820742932, now seen corresponding path program 1 times [2022-11-16 11:24:52,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:52,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610222016] [2022-11-16 11:24:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:52,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:52,425 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:52,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134046777] [2022-11-16 11:24:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:52,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:52,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:52,428 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:52,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:24:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:52,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:24:52,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:24:52,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:52,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:52,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610222016] [2022-11-16 11:24:52,593 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:52,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134046777] [2022-11-16 11:24:52,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134046777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:52,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:52,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:24:52,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032377406] [2022-11-16 11:24:52,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:52,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:24:52,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:52,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:24:52,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:24:52,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-16 11:24:52,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 351 transitions, 1188 flow. Second operand has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:52,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:52,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-16 11:24:52,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:53,627 INFO L130 PetriNetUnfolder]: 544/5724 cut-off events. [2022-11-16 11:24:53,627 INFO L131 PetriNetUnfolder]: For 863/863 co-relation queries the response was YES. [2022-11-16 11:24:53,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9067 conditions, 5724 events. 544/5724 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 55319 event pairs, 180 based on Foata normal form. 0/5200 useless extension candidates. Maximal degree in co-relation 7887. Up to 677 conditions per place. [2022-11-16 11:24:53,669 INFO L137 encePairwiseOnDemand]: 329/335 looper letters, 26 selfloop transitions, 8 changer transitions 0/366 dead transitions. [2022-11-16 11:24:53,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 366 transitions, 1295 flow [2022-11-16 11:24:53,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:24:53,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:24:53,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1527 transitions. [2022-11-16 11:24:53,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9116417910447762 [2022-11-16 11:24:53,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1527 transitions. [2022-11-16 11:24:53,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1527 transitions. [2022-11-16 11:24:53,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:53,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1527 transitions. [2022-11-16 11:24:53,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.4) internal successors, (1527), 5 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:53,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:53,678 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:53,678 INFO L175 Difference]: Start difference. First operand has 344 places, 351 transitions, 1188 flow. Second operand 5 states and 1527 transitions. [2022-11-16 11:24:53,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 366 transitions, 1295 flow [2022-11-16 11:24:53,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 366 transitions, 1295 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:24:53,692 INFO L231 Difference]: Finished difference. Result has 352 places, 355 transitions, 1238 flow [2022-11-16 11:24:53,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1238, PETRI_PLACES=352, PETRI_TRANSITIONS=355} [2022-11-16 11:24:53,694 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 62 predicate places. [2022-11-16 11:24:53,694 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 355 transitions, 1238 flow [2022-11-16 11:24:53,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:53,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:53,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:53,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:53,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:24:53,903 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:24:53,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:53,904 INFO L85 PathProgramCache]: Analyzing trace with hash -431921230, now seen corresponding path program 1 times [2022-11-16 11:24:53,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:53,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746103464] [2022-11-16 11:24:53,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:53,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:53,929 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:53,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808628940] [2022-11-16 11:24:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:53,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:53,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:53,937 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:53,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:24:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:54,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:24:54,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:54,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:54,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:54,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746103464] [2022-11-16 11:24:54,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:54,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808628940] [2022-11-16 11:24:54,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808628940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:54,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:54,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:24:54,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740821423] [2022-11-16 11:24:54,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:54,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:24:54,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:54,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:24:54,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:24:54,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-16 11:24:54,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 355 transitions, 1238 flow. Second operand has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:54,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:54,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-16 11:24:54,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:54,970 INFO L130 PetriNetUnfolder]: 120/4718 cut-off events. [2022-11-16 11:24:54,970 INFO L131 PetriNetUnfolder]: For 1041/1059 co-relation queries the response was YES. [2022-11-16 11:24:54,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6876 conditions, 4718 events. 120/4718 cut-off events. For 1041/1059 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 42667 event pairs, 0 based on Foata normal form. 40/4428 useless extension candidates. Maximal degree in co-relation 5872. Up to 320 conditions per place. [2022-11-16 11:24:54,995 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 14 selfloop transitions, 5 changer transitions 0/353 dead transitions. [2022-11-16 11:24:54,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 353 transitions, 1266 flow [2022-11-16 11:24:54,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:24:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:24:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1212 transitions. [2022-11-16 11:24:54,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9044776119402985 [2022-11-16 11:24:54,998 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1212 transitions. [2022-11-16 11:24:54,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1212 transitions. [2022-11-16 11:24:54,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:54,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1212 transitions. [2022-11-16 11:24:55,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:55,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:55,002 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:55,002 INFO L175 Difference]: Start difference. First operand has 352 places, 355 transitions, 1238 flow. Second operand 4 states and 1212 transitions. [2022-11-16 11:24:55,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 353 transitions, 1266 flow [2022-11-16 11:24:55,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 353 transitions, 1262 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:24:55,017 INFO L231 Difference]: Finished difference. Result has 352 places, 353 transitions, 1234 flow [2022-11-16 11:24:55,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1234, PETRI_PLACES=352, PETRI_TRANSITIONS=353} [2022-11-16 11:24:55,019 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 62 predicate places. [2022-11-16 11:24:55,019 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 353 transitions, 1234 flow [2022-11-16 11:24:55,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:55,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:55,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:55,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-16 11:24:55,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:55,225 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:24:55,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:55,226 INFO L85 PathProgramCache]: Analyzing trace with hash 326773712, now seen corresponding path program 1 times [2022-11-16 11:24:55,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:55,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058517975] [2022-11-16 11:24:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:55,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:55,248 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:55,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485692359] [2022-11-16 11:24:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:55,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:55,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:55,256 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:55,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:24:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:55,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:24:55,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:24:55,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:55,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:55,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058517975] [2022-11-16 11:24:55,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:55,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485692359] [2022-11-16 11:24:55,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485692359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:55,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:55,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:24:55,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202978066] [2022-11-16 11:24:55,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:55,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:24:55,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:55,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:24:55,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:24:55,426 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-16 11:24:55,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 353 transitions, 1234 flow. Second operand has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:55,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:55,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-16 11:24:55,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:56,556 INFO L130 PetriNetUnfolder]: 548/6420 cut-off events. [2022-11-16 11:24:56,557 INFO L131 PetriNetUnfolder]: For 1499/1567 co-relation queries the response was YES. [2022-11-16 11:24:56,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10175 conditions, 6420 events. 548/6420 cut-off events. For 1499/1567 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 64211 event pairs, 176 based on Foata normal form. 72/5896 useless extension candidates. Maximal degree in co-relation 8279. Up to 760 conditions per place. [2022-11-16 11:24:56,600 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 15 selfloop transitions, 8 changer transitions 0/353 dead transitions. [2022-11-16 11:24:56,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 353 transitions, 1276 flow [2022-11-16 11:24:56,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:24:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:24:56,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1214 transitions. [2022-11-16 11:24:56,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9059701492537313 [2022-11-16 11:24:56,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1214 transitions. [2022-11-16 11:24:56,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1214 transitions. [2022-11-16 11:24:56,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:56,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1214 transitions. [2022-11-16 11:24:56,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.5) internal successors, (1214), 4 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:56,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:56,606 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:56,607 INFO L175 Difference]: Start difference. First operand has 352 places, 353 transitions, 1234 flow. Second operand 4 states and 1214 transitions. [2022-11-16 11:24:56,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 353 transitions, 1276 flow [2022-11-16 11:24:56,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 353 transitions, 1256 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:24:56,625 INFO L231 Difference]: Finished difference. Result has 349 places, 351 transitions, 1220 flow [2022-11-16 11:24:56,626 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1220, PETRI_PLACES=349, PETRI_TRANSITIONS=351} [2022-11-16 11:24:56,626 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 59 predicate places. [2022-11-16 11:24:56,626 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 351 transitions, 1220 flow [2022-11-16 11:24:56,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:56,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:56,627 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:56,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:56,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:24:56,833 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:24:56,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:56,833 INFO L85 PathProgramCache]: Analyzing trace with hash -99415019, now seen corresponding path program 1 times [2022-11-16 11:24:56,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:56,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675871598] [2022-11-16 11:24:56,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:56,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:56,866 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:56,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008581951] [2022-11-16 11:24:56,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:56,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:56,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:56,868 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:56,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:24:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:57,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:24:57,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 11:24:57,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 11:24:57,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:57,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675871598] [2022-11-16 11:24:57,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:57,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008581951] [2022-11-16 11:24:57,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008581951] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:24:57,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:24:57,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2022-11-16 11:24:57,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457871974] [2022-11-16 11:24:57,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:57,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:24:57,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:57,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:24:57,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:24:57,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 335 [2022-11-16 11:24:57,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 351 transitions, 1220 flow. Second operand has 21 states, 21 states have (on average 259.04761904761904) internal successors, (5440), 21 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:57,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:57,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 335 [2022-11-16 11:24:57,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:00,164 INFO L130 PetriNetUnfolder]: 340/7786 cut-off events. [2022-11-16 11:25:00,164 INFO L131 PetriNetUnfolder]: For 2388/2404 co-relation queries the response was YES. [2022-11-16 11:25:00,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12309 conditions, 7786 events. 340/7786 cut-off events. For 2388/2404 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 80209 event pairs, 136 based on Foata normal form. 18/7230 useless extension candidates. Maximal degree in co-relation 10650. Up to 351 conditions per place. [2022-11-16 11:25:00,217 INFO L137 encePairwiseOnDemand]: 311/335 looper letters, 145 selfloop transitions, 79 changer transitions 0/456 dead transitions. [2022-11-16 11:25:00,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 456 transitions, 2120 flow [2022-11-16 11:25:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:25:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:25:00,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7844 transitions. [2022-11-16 11:25:00,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.780497512437811 [2022-11-16 11:25:00,231 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7844 transitions. [2022-11-16 11:25:00,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7844 transitions. [2022-11-16 11:25:00,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:00,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7844 transitions. [2022-11-16 11:25:00,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 261.46666666666664) internal successors, (7844), 30 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:00,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 335.0) internal successors, (10385), 31 states have internal predecessors, (10385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:00,272 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 335.0) internal successors, (10385), 31 states have internal predecessors, (10385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:00,273 INFO L175 Difference]: Start difference. First operand has 349 places, 351 transitions, 1220 flow. Second operand 30 states and 7844 transitions. [2022-11-16 11:25:00,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 456 transitions, 2120 flow [2022-11-16 11:25:00,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 456 transitions, 2104 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:25:00,301 INFO L231 Difference]: Finished difference. Result has 380 places, 381 transitions, 1613 flow [2022-11-16 11:25:00,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1613, PETRI_PLACES=380, PETRI_TRANSITIONS=381} [2022-11-16 11:25:00,301 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 90 predicate places. [2022-11-16 11:25:00,302 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 381 transitions, 1613 flow [2022-11-16 11:25:00,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 259.04761904761904) internal successors, (5440), 21 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:00,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:00,303 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:00,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:00,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:25:00,504 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:25:00,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:00,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2027773302, now seen corresponding path program 1 times [2022-11-16 11:25:00,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:00,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972069445] [2022-11-16 11:25:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:00,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:00,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:25:00,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484039269] [2022-11-16 11:25:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:00,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:00,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:00,530 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:00,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:25:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:00,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:25:00,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:25:01,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:25:01,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:01,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972069445] [2022-11-16 11:25:01,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:25:01,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484039269] [2022-11-16 11:25:01,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484039269] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:01,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:25:01,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-16 11:25:01,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192305616] [2022-11-16 11:25:01,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:01,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:25:01,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:01,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:25:01,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:25:01,481 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 335 [2022-11-16 11:25:01,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 381 transitions, 1613 flow. Second operand has 19 states, 19 states have (on average 249.78947368421052) internal successors, (4746), 19 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:01,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:01,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 335 [2022-11-16 11:25:01,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:04,315 INFO L130 PetriNetUnfolder]: 746/9516 cut-off events. [2022-11-16 11:25:04,316 INFO L131 PetriNetUnfolder]: For 2955/3013 co-relation queries the response was YES. [2022-11-16 11:25:04,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15721 conditions, 9516 events. 746/9516 cut-off events. For 2955/3013 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 103073 event pairs, 314 based on Foata normal form. 58/8610 useless extension candidates. Maximal degree in co-relation 12646. Up to 655 conditions per place. [2022-11-16 11:25:04,374 INFO L137 encePairwiseOnDemand]: 307/335 looper letters, 201 selfloop transitions, 74 changer transitions 0/492 dead transitions. [2022-11-16 11:25:04,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 492 transitions, 2567 flow [2022-11-16 11:25:04,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:25:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:25:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 8569 transitions. [2022-11-16 11:25:04,385 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7523266022827041 [2022-11-16 11:25:04,385 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 8569 transitions. [2022-11-16 11:25:04,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 8569 transitions. [2022-11-16 11:25:04,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:04,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 8569 transitions. [2022-11-16 11:25:04,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 252.02941176470588) internal successors, (8569), 34 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:04,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 335.0) internal successors, (11725), 35 states have internal predecessors, (11725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:04,412 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 335.0) internal successors, (11725), 35 states have internal predecessors, (11725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:04,413 INFO L175 Difference]: Start difference. First operand has 380 places, 381 transitions, 1613 flow. Second operand 34 states and 8569 transitions. [2022-11-16 11:25:04,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 492 transitions, 2567 flow [2022-11-16 11:25:04,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 492 transitions, 2482 flow, removed 17 selfloop flow, removed 6 redundant places. [2022-11-16 11:25:04,443 INFO L231 Difference]: Finished difference. Result has 417 places, 395 transitions, 1792 flow [2022-11-16 11:25:04,443 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1792, PETRI_PLACES=417, PETRI_TRANSITIONS=395} [2022-11-16 11:25:04,444 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 127 predicate places. [2022-11-16 11:25:04,444 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 395 transitions, 1792 flow [2022-11-16 11:25:04,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 249.78947368421052) internal successors, (4746), 19 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:04,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:04,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:04,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:04,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:25:04,655 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:25:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1879518118, now seen corresponding path program 1 times [2022-11-16 11:25:04,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:04,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040498454] [2022-11-16 11:25:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:04,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:04,672 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:25:04,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629254945] [2022-11-16 11:25:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:04,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:04,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:04,674 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:04,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 11:25:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:04,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:25:04,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:05,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:25:05,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:05,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040498454] [2022-11-16 11:25:05,009 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:25:05,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629254945] [2022-11-16 11:25:05,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629254945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:05,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:05,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:25:05,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131436994] [2022-11-16 11:25:05,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:05,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:05,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:05,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:25:05,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 335 [2022-11-16 11:25:05,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 395 transitions, 1792 flow. Second operand has 6 states, 6 states have (on average 236.5) internal successors, (1419), 6 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:05,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:05,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 335 [2022-11-16 11:25:05,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:06,725 INFO L130 PetriNetUnfolder]: 436/8482 cut-off events. [2022-11-16 11:25:06,725 INFO L131 PetriNetUnfolder]: For 3171/3227 co-relation queries the response was YES. [2022-11-16 11:25:06,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13153 conditions, 8482 events. 436/8482 cut-off events. For 3171/3227 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 89589 event pairs, 126 based on Foata normal form. 52/7538 useless extension candidates. Maximal degree in co-relation 11621. Up to 1116 conditions per place. [2022-11-16 11:25:06,835 INFO L137 encePairwiseOnDemand]: 327/335 looper letters, 84 selfloop transitions, 5 changer transitions 14/413 dead transitions. [2022-11-16 11:25:06,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 413 transitions, 2020 flow [2022-11-16 11:25:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:25:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:25:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1685 transitions. [2022-11-16 11:25:06,838 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7185501066098081 [2022-11-16 11:25:06,838 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1685 transitions. [2022-11-16 11:25:06,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1685 transitions. [2022-11-16 11:25:06,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:06,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1685 transitions. [2022-11-16 11:25:06,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 240.71428571428572) internal successors, (1685), 7 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:06,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 335.0) internal successors, (2680), 8 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:06,844 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 335.0) internal successors, (2680), 8 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:06,844 INFO L175 Difference]: Start difference. First operand has 417 places, 395 transitions, 1792 flow. Second operand 7 states and 1685 transitions. [2022-11-16 11:25:06,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 413 transitions, 2020 flow [2022-11-16 11:25:07,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 413 transitions, 1942 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-16 11:25:07,014 INFO L231 Difference]: Finished difference. Result has 411 places, 386 transitions, 1670 flow [2022-11-16 11:25:07,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1670, PETRI_PLACES=411, PETRI_TRANSITIONS=386} [2022-11-16 11:25:07,015 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 121 predicate places. [2022-11-16 11:25:07,015 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 386 transitions, 1670 flow [2022-11-16 11:25:07,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.5) internal successors, (1419), 6 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:07,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:07,016 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2022-11-16 11:25:07,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-16 11:25:07,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:25:07,222 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:25:07,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:07,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1214217867, now seen corresponding path program 2 times [2022-11-16 11:25:07,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:07,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139346675] [2022-11-16 11:25:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:07,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:07,240 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:25:07,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544243723] [2022-11-16 11:25:07,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:25:07,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:07,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:07,242 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:07,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 11:25:07,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:25:07,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:25:07,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:25:07,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:09,319 WARN L855 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= c_~L~0 .cse0)))) is different from true [2022-11-16 11:25:11,830 WARN L855 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= |c_ULTIMATE.start_create_fresh_int_array_#in~size#1| .cse0)))) is different from true [2022-11-16 11:25:13,828 WARN L855 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= |c_ULTIMATE.start_create_fresh_int_array_~size#1| .cse0) (<= .cse0 2147483647)))) is different from true [2022-11-16 11:25:16,309 WARN L855 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) .cse0)))) is different from true [2022-11-16 11:25:18,366 WARN L855 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post27#1| 1) .cse0)))) is different from true [2022-11-16 11:25:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 20 not checked. [2022-11-16 11:25:18,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:18,605 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-16 11:25:18,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:18,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139346675] [2022-11-16 11:25:18,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:25:18,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544243723] [2022-11-16 11:25:18,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544243723] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:18,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:25:18,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-16 11:25:18,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936300625] [2022-11-16 11:25:18,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:18,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:25:18,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:18,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:25:18,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=48, Unknown=5, NotChecked=80, Total=156 [2022-11-16 11:25:18,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 335 [2022-11-16 11:25:18,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 386 transitions, 1670 flow. Second operand has 13 states, 13 states have (on average 219.0) internal successors, (2847), 13 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:18,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:18,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 335 [2022-11-16 11:25:18,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:48,571 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 19 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:25:56,439 WARN L233 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 20 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:26:03,493 INFO L130 PetriNetUnfolder]: 2242/14698 cut-off events. [2022-11-16 11:26:03,493 INFO L131 PetriNetUnfolder]: For 11395/11547 co-relation queries the response was YES. [2022-11-16 11:26:03,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28981 conditions, 14698 events. 2242/14698 cut-off events. For 11395/11547 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 168548 event pairs, 1794 based on Foata normal form. 154/13198 useless extension candidates. Maximal degree in co-relation 28083. Up to 4455 conditions per place. [2022-11-16 11:26:03,675 INFO L137 encePairwiseOnDemand]: 315/335 looper letters, 182 selfloop transitions, 43 changer transitions 0/422 dead transitions. [2022-11-16 11:26:03,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 422 transitions, 2220 flow [2022-11-16 11:26:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:26:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:26:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3112 transitions. [2022-11-16 11:26:03,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6635394456289979 [2022-11-16 11:26:03,679 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3112 transitions. [2022-11-16 11:26:03,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3112 transitions. [2022-11-16 11:26:03,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:03,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3112 transitions. [2022-11-16 11:26:03,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 222.28571428571428) internal successors, (3112), 14 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:03,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:03,688 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:03,689 INFO L175 Difference]: Start difference. First operand has 411 places, 386 transitions, 1670 flow. Second operand 14 states and 3112 transitions. [2022-11-16 11:26:03,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 422 transitions, 2220 flow [2022-11-16 11:26:03,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 422 transitions, 2156 flow, removed 11 selfloop flow, removed 14 redundant places. [2022-11-16 11:26:03,761 INFO L231 Difference]: Finished difference. Result has 398 places, 385 transitions, 1688 flow [2022-11-16 11:26:03,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1688, PETRI_PLACES=398, PETRI_TRANSITIONS=385} [2022-11-16 11:26:03,762 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 108 predicate places. [2022-11-16 11:26:03,762 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 385 transitions, 1688 flow [2022-11-16 11:26:03,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 219.0) internal successors, (2847), 13 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:03,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:03,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:03,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:03,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:03,969 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:26:03,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1531979500, now seen corresponding path program 1 times [2022-11-16 11:26:03,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:03,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055741499] [2022-11-16 11:26:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:03,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:03,989 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:03,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212374293] [2022-11-16 11:26:03,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:03,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:03,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:03,992 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:04,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 11:26:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:04,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:26:04,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:04,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:04,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:04,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055741499] [2022-11-16 11:26:04,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:04,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212374293] [2022-11-16 11:26:04,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212374293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:04,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:04,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:26:04,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122522550] [2022-11-16 11:26:04,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:04,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:26:04,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:04,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:26:04,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:26:04,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 335 [2022-11-16 11:26:04,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 385 transitions, 1688 flow. Second operand has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:04,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:04,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 335 [2022-11-16 11:26:04,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:07,822 INFO L130 PetriNetUnfolder]: 1086/12662 cut-off events. [2022-11-16 11:26:07,823 INFO L131 PetriNetUnfolder]: For 5069/5105 co-relation queries the response was YES. [2022-11-16 11:26:07,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21181 conditions, 12662 events. 1086/12662 cut-off events. For 5069/5105 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 148297 event pairs, 600 based on Foata normal form. 0/11240 useless extension candidates. Maximal degree in co-relation 16771. Up to 2412 conditions per place. [2022-11-16 11:26:07,944 INFO L137 encePairwiseOnDemand]: 325/335 looper letters, 208 selfloop transitions, 38 changer transitions 0/482 dead transitions. [2022-11-16 11:26:07,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 482 transitions, 2575 flow [2022-11-16 11:26:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:26:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:26:07,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2801 transitions. [2022-11-16 11:26:07,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7601085481682497 [2022-11-16 11:26:07,951 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2801 transitions. [2022-11-16 11:26:07,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2801 transitions. [2022-11-16 11:26:07,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:07,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2801 transitions. [2022-11-16 11:26:07,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 254.63636363636363) internal successors, (2801), 11 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 335.0) internal successors, (4020), 12 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,960 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 335.0) internal successors, (4020), 12 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,960 INFO L175 Difference]: Start difference. First operand has 398 places, 385 transitions, 1688 flow. Second operand 11 states and 2801 transitions. [2022-11-16 11:26:07,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 482 transitions, 2575 flow [2022-11-16 11:26:07,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 482 transitions, 2502 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-16 11:26:07,987 INFO L231 Difference]: Finished difference. Result has 403 places, 401 transitions, 1845 flow [2022-11-16 11:26:07,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1845, PETRI_PLACES=403, PETRI_TRANSITIONS=401} [2022-11-16 11:26:07,987 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 113 predicate places. [2022-11-16 11:26:07,988 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 401 transitions, 1845 flow [2022-11-16 11:26:07,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:07,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:07,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:08,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:08,190 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:26:08,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:08,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1531978506, now seen corresponding path program 1 times [2022-11-16 11:26:08,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:08,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603854626] [2022-11-16 11:26:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:08,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:08,207 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:08,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515181970] [2022-11-16 11:26:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:08,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:08,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:08,209 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:08,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 11:26:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:08,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:26:08,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:08,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:08,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:08,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603854626] [2022-11-16 11:26:08,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:08,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515181970] [2022-11-16 11:26:08,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515181970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:08,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:08,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:26:08,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954907282] [2022-11-16 11:26:08,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:08,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:26:08,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:08,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:26:08,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:26:08,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 335 [2022-11-16 11:26:08,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 401 transitions, 1845 flow. Second operand has 4 states, 4 states have (on average 292.5) internal successors, (1170), 4 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:08,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:08,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 335 [2022-11-16 11:26:08,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:12,360 INFO L130 PetriNetUnfolder]: 2740/18194 cut-off events. [2022-11-16 11:26:12,360 INFO L131 PetriNetUnfolder]: For 6169/6205 co-relation queries the response was YES. [2022-11-16 11:26:12,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30096 conditions, 18194 events. 2740/18194 cut-off events. For 6169/6205 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 236584 event pairs, 580 based on Foata normal form. 0/15480 useless extension candidates. Maximal degree in co-relation 23244. Up to 3377 conditions per place. [2022-11-16 11:26:12,576 INFO L137 encePairwiseOnDemand]: 329/335 looper letters, 41 selfloop transitions, 6 changer transitions 0/423 dead transitions. [2022-11-16 11:26:12,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 423 transitions, 1989 flow [2022-11-16 11:26:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:26:12,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1502 transitions. [2022-11-16 11:26:12,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8967164179104478 [2022-11-16 11:26:12,582 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1502 transitions. [2022-11-16 11:26:12,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1502 transitions. [2022-11-16 11:26:12,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:12,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1502 transitions. [2022-11-16 11:26:12,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.4) internal successors, (1502), 5 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:12,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:12,596 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:12,596 INFO L175 Difference]: Start difference. First operand has 403 places, 401 transitions, 1845 flow. Second operand 5 states and 1502 transitions. [2022-11-16 11:26:12,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 423 transitions, 1989 flow [2022-11-16 11:26:12,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 423 transitions, 1979 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:26:12,649 INFO L231 Difference]: Finished difference. Result has 409 places, 405 transitions, 1877 flow [2022-11-16 11:26:12,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1877, PETRI_PLACES=409, PETRI_TRANSITIONS=405} [2022-11-16 11:26:12,650 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 119 predicate places. [2022-11-16 11:26:12,651 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 405 transitions, 1877 flow [2022-11-16 11:26:12,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.5) internal successors, (1170), 4 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:12,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:12,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:12,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:12,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-16 11:26:12,858 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:26:12,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:12,859 INFO L85 PathProgramCache]: Analyzing trace with hash 246694278, now seen corresponding path program 1 times [2022-11-16 11:26:12,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:12,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225252609] [2022-11-16 11:26:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:12,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:12,885 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:12,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582596597] [2022-11-16 11:26:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:12,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:12,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:12,887 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:12,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 11:26:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:13,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:26:13,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:13,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:13,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:13,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225252609] [2022-11-16 11:26:13,116 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:13,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582596597] [2022-11-16 11:26:13,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582596597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:13,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:13,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:26:13,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291947735] [2022-11-16 11:26:13,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:13,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:26:13,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:13,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:26:13,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:26:13,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 335 [2022-11-16 11:26:13,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 405 transitions, 1877 flow. Second operand has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:13,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:13,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 335 [2022-11-16 11:26:13,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:16,917 INFO L130 PetriNetUnfolder]: 2560/17726 cut-off events. [2022-11-16 11:26:16,917 INFO L131 PetriNetUnfolder]: For 7513/7549 co-relation queries the response was YES. [2022-11-16 11:26:17,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30921 conditions, 17726 events. 2560/17726 cut-off events. For 7513/7549 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 228980 event pairs, 1250 based on Foata normal form. 288/15804 useless extension candidates. Maximal degree in co-relation 23886. Up to 3840 conditions per place. [2022-11-16 11:26:17,129 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 23 selfloop transitions, 6 changer transitions 0/405 dead transitions. [2022-11-16 11:26:17,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 405 transitions, 1931 flow [2022-11-16 11:26:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:26:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:26:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1190 transitions. [2022-11-16 11:26:17,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8880597014925373 [2022-11-16 11:26:17,131 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1190 transitions. [2022-11-16 11:26:17,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1190 transitions. [2022-11-16 11:26:17,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:17,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1190 transitions. [2022-11-16 11:26:17,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.5) internal successors, (1190), 4 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:17,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:17,134 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:17,134 INFO L175 Difference]: Start difference. First operand has 409 places, 405 transitions, 1877 flow. Second operand 4 states and 1190 transitions. [2022-11-16 11:26:17,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 405 transitions, 1931 flow [2022-11-16 11:26:17,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 405 transitions, 1925 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:26:17,185 INFO L231 Difference]: Finished difference. Result has 409 places, 403 transitions, 1873 flow [2022-11-16 11:26:17,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1873, PETRI_PLACES=409, PETRI_TRANSITIONS=403} [2022-11-16 11:26:17,186 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 119 predicate places. [2022-11-16 11:26:17,186 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 403 transitions, 1873 flow [2022-11-16 11:26:17,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:17,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:17,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:17,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:17,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:17,393 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:26:17,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:17,394 INFO L85 PathProgramCache]: Analyzing trace with hash -995550503, now seen corresponding path program 2 times [2022-11-16 11:26:17,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:17,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086096865] [2022-11-16 11:26:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:17,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:17,442 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:17,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333103613] [2022-11-16 11:26:17,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:26:17,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:17,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:17,456 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:17,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 11:26:17,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:26:17,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:17,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:26:17,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:19,711 WARN L855 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= c_~L~0 .cse0)))) is different from true [2022-11-16 11:26:22,785 WARN L855 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= (+ c_thread1Thread1of1ForFork1_~i~0 1) .cse0) (<= .cse0 2147483647)))) is different from true [2022-11-16 11:26:24,836 WARN L855 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_thread1Thread1of1ForFork1_#t~post1| 1) .cse0)))) is different from true [2022-11-16 11:26:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 5 not checked. [2022-11-16 11:26:24,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 11:26:25,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:25,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086096865] [2022-11-16 11:26:25,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:25,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333103613] [2022-11-16 11:26:25,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333103613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:25,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:25,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:26:25,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006468866] [2022-11-16 11:26:25,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:25,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:26:25,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:25,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:26:25,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=24, Unknown=3, NotChecked=30, Total=72 [2022-11-16 11:26:25,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 335 [2022-11-16 11:26:25,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 403 transitions, 1873 flow. Second operand has 9 states, 9 states have (on average 256.77777777777777) internal successors, (2311), 9 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:25,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:25,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 335 [2022-11-16 11:26:25,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:54,201 WARN L233 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 20 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:27:10,814 INFO L130 PetriNetUnfolder]: 13360/49060 cut-off events. [2022-11-16 11:27:10,814 INFO L131 PetriNetUnfolder]: For 34659/35031 co-relation queries the response was YES. [2022-11-16 11:27:11,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103948 conditions, 49060 events. 13360/49060 cut-off events. For 34659/35031 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 611198 event pairs, 7274 based on Foata normal form. 694/43924 useless extension candidates. Maximal degree in co-relation 79237. Up to 13767 conditions per place. [2022-11-16 11:27:11,438 INFO L137 encePairwiseOnDemand]: 322/335 looper letters, 126 selfloop transitions, 25 changer transitions 1/477 dead transitions. [2022-11-16 11:27:11,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 477 transitions, 2419 flow [2022-11-16 11:27:11,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:27:11,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:27:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2890 transitions. [2022-11-16 11:27:11,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7842605156037992 [2022-11-16 11:27:11,442 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2890 transitions. [2022-11-16 11:27:11,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2890 transitions. [2022-11-16 11:27:11,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:11,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2890 transitions. [2022-11-16 11:27:11,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 262.72727272727275) internal successors, (2890), 11 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:11,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 335.0) internal successors, (4020), 12 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:11,453 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 335.0) internal successors, (4020), 12 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:11,454 INFO L175 Difference]: Start difference. First operand has 409 places, 403 transitions, 1873 flow. Second operand 11 states and 2890 transitions. [2022-11-16 11:27:11,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 477 transitions, 2419 flow [2022-11-16 11:27:11,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 477 transitions, 2407 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:27:11,740 INFO L231 Difference]: Finished difference. Result has 421 places, 418 transitions, 2032 flow [2022-11-16 11:27:11,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2032, PETRI_PLACES=421, PETRI_TRANSITIONS=418} [2022-11-16 11:27:11,741 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 131 predicate places. [2022-11-16 11:27:11,741 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 418 transitions, 2032 flow [2022-11-16 11:27:11,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 256.77777777777777) internal successors, (2311), 9 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:11,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:11,741 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:11,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:11,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:11,943 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:27:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash 86050399, now seen corresponding path program 1 times [2022-11-16 11:27:11,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:11,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990232854] [2022-11-16 11:27:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:11,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:11,963 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:11,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709622389] [2022-11-16 11:27:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:11,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:11,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:11,966 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:11,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 11:27:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:12,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:27:12,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:12,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:12,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:12,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990232854] [2022-11-16 11:27:12,461 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:12,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709622389] [2022-11-16 11:27:12,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709622389] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:12,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:12,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-16 11:27:12,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459336576] [2022-11-16 11:27:12,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:12,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:27:12,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:12,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:27:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:27:12,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 335 [2022-11-16 11:27:12,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 418 transitions, 2032 flow. Second operand has 12 states, 12 states have (on average 265.25) internal successors, (3183), 12 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:12,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:12,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 335 [2022-11-16 11:27:12,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:22,723 INFO L130 PetriNetUnfolder]: 4134/34174 cut-off events. [2022-11-16 11:27:22,724 INFO L131 PetriNetUnfolder]: For 16133/16161 co-relation queries the response was YES. [2022-11-16 11:27:23,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64238 conditions, 34174 events. 4134/34174 cut-off events. For 16133/16161 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 492086 event pairs, 2368 based on Foata normal form. 168/30910 useless extension candidates. Maximal degree in co-relation 55416. Up to 8701 conditions per place. [2022-11-16 11:27:23,125 INFO L137 encePairwiseOnDemand]: 320/335 looper letters, 88 selfloop transitions, 19 changer transitions 0/465 dead transitions. [2022-11-16 11:27:23,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 465 transitions, 2388 flow [2022-11-16 11:27:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:27:23,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 11:27:23,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4554 transitions. [2022-11-16 11:27:23,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7996488147497806 [2022-11-16 11:27:23,131 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4554 transitions. [2022-11-16 11:27:23,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4554 transitions. [2022-11-16 11:27:23,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:23,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4554 transitions. [2022-11-16 11:27:23,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 267.88235294117646) internal successors, (4554), 17 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:23,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 335.0) internal successors, (6030), 18 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:23,147 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 335.0) internal successors, (6030), 18 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:23,147 INFO L175 Difference]: Start difference. First operand has 421 places, 418 transitions, 2032 flow. Second operand 17 states and 4554 transitions. [2022-11-16 11:27:23,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 465 transitions, 2388 flow [2022-11-16 11:27:23,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 465 transitions, 2368 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-16 11:27:23,395 INFO L231 Difference]: Finished difference. Result has 441 places, 429 transitions, 2127 flow [2022-11-16 11:27:23,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2127, PETRI_PLACES=441, PETRI_TRANSITIONS=429} [2022-11-16 11:27:23,396 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 151 predicate places. [2022-11-16 11:27:23,396 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 429 transitions, 2127 flow [2022-11-16 11:27:23,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 265.25) internal successors, (3183), 12 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:23,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:23,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:23,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:23,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 11:27:23,597 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:27:23,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:23,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1145269542, now seen corresponding path program 1 times [2022-11-16 11:27:23,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:23,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419713765] [2022-11-16 11:27:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:23,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:23,628 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:23,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27999857] [2022-11-16 11:27:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:23,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:23,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:23,630 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:23,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 11:27:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:23,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:27:23,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:27:23,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:27:23,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:23,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419713765] [2022-11-16 11:27:23,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:23,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27999857] [2022-11-16 11:27:23,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27999857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:23,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:23,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:27:23,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834220777] [2022-11-16 11:27:23,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:23,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:27:23,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:23,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:27:23,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:27:23,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 335 [2022-11-16 11:27:23,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 429 transitions, 2127 flow. Second operand has 5 states, 5 states have (on average 285.4) internal successors, (1427), 5 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:23,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:23,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 335 [2022-11-16 11:27:23,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:28,290 INFO L130 PetriNetUnfolder]: 844/16477 cut-off events. [2022-11-16 11:27:28,290 INFO L131 PetriNetUnfolder]: For 10062/10076 co-relation queries the response was YES. [2022-11-16 11:27:28,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29445 conditions, 16477 events. 844/16477 cut-off events. For 10062/10076 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 200373 event pairs, 269 based on Foata normal form. 22/15215 useless extension candidates. Maximal degree in co-relation 28242. Up to 1928 conditions per place. [2022-11-16 11:27:28,483 INFO L137 encePairwiseOnDemand]: 327/335 looper letters, 49 selfloop transitions, 7 changer transitions 0/440 dead transitions. [2022-11-16 11:27:28,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 440 transitions, 2296 flow [2022-11-16 11:27:28,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:27:28,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:27:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1729 transitions. [2022-11-16 11:27:28,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601990049751244 [2022-11-16 11:27:28,485 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1729 transitions. [2022-11-16 11:27:28,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1729 transitions. [2022-11-16 11:27:28,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:28,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1729 transitions. [2022-11-16 11:27:28,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.1666666666667) internal successors, (1729), 6 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:28,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:28,490 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:28,490 INFO L175 Difference]: Start difference. First operand has 441 places, 429 transitions, 2127 flow. Second operand 6 states and 1729 transitions. [2022-11-16 11:27:28,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 440 transitions, 2296 flow [2022-11-16 11:27:28,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 440 transitions, 2271 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-16 11:27:28,641 INFO L231 Difference]: Finished difference. Result has 442 places, 430 transitions, 2135 flow [2022-11-16 11:27:28,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2135, PETRI_PLACES=442, PETRI_TRANSITIONS=430} [2022-11-16 11:27:28,643 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 152 predicate places. [2022-11-16 11:27:28,643 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 430 transitions, 2135 flow [2022-11-16 11:27:28,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.4) internal successors, (1427), 5 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:28,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:28,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:28,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:28,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 11:27:28,850 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:27:28,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:28,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1827500097, now seen corresponding path program 1 times [2022-11-16 11:27:28,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:28,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213623924] [2022-11-16 11:27:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:28,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:28,871 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:28,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193849895] [2022-11-16 11:27:28,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:28,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:28,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:28,873 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:28,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 11:27:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:29,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:27:29,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:27:29,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:27:29,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:29,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213623924] [2022-11-16 11:27:29,105 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:29,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193849895] [2022-11-16 11:27:29,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193849895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:29,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:29,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:27:29,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980726319] [2022-11-16 11:27:29,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:29,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:27:29,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:29,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:27:29,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:29,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 335 [2022-11-16 11:27:29,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 430 transitions, 2135 flow. Second operand has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:29,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:29,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 335 [2022-11-16 11:27:29,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:33,816 INFO L130 PetriNetUnfolder]: 1664/17283 cut-off events. [2022-11-16 11:27:33,816 INFO L131 PetriNetUnfolder]: For 11649/11663 co-relation queries the response was YES. [2022-11-16 11:27:33,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32582 conditions, 17283 events. 1664/17283 cut-off events. For 11649/11663 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 215423 event pairs, 544 based on Foata normal form. 238/15937 useless extension candidates. Maximal degree in co-relation 31370. Up to 2418 conditions per place. [2022-11-16 11:27:34,021 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 39 selfloop transitions, 5 changer transitions 0/440 dead transitions. [2022-11-16 11:27:34,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 440 transitions, 2243 flow [2022-11-16 11:27:34,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:27:34,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:27:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 923 transitions. [2022-11-16 11:27:34,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.918407960199005 [2022-11-16 11:27:34,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 923 transitions. [2022-11-16 11:27:34,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 923 transitions. [2022-11-16 11:27:34,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:34,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 923 transitions. [2022-11-16 11:27:34,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:34,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 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) [2022-11-16 11:27:34,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 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) [2022-11-16 11:27:34,025 INFO L175 Difference]: Start difference. First operand has 442 places, 430 transitions, 2135 flow. Second operand 3 states and 923 transitions. [2022-11-16 11:27:34,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 440 transitions, 2243 flow [2022-11-16 11:27:34,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 440 transitions, 2234 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:27:34,115 INFO L231 Difference]: Finished difference. Result has 442 places, 428 transitions, 2133 flow [2022-11-16 11:27:34,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2133, PETRI_PLACES=442, PETRI_TRANSITIONS=428} [2022-11-16 11:27:34,116 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 152 predicate places. [2022-11-16 11:27:34,116 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 428 transitions, 2133 flow [2022-11-16 11:27:34,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:34,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:34,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:34,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:34,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 11:27:34,318 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:27:34,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:34,319 INFO L85 PathProgramCache]: Analyzing trace with hash 889358010, now seen corresponding path program 1 times [2022-11-16 11:27:34,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:34,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188550204] [2022-11-16 11:27:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:34,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:34,342 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:34,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363834719] [2022-11-16 11:27:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:34,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:34,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:34,345 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:34,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 11:27:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:34,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:27:34,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:27:34,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:27:34,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:34,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188550204] [2022-11-16 11:27:34,736 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:34,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363834719] [2022-11-16 11:27:34,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363834719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:34,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:34,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-16 11:27:34,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663232465] [2022-11-16 11:27:34,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:34,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:27:34,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:34,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:27:34,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:27:34,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-16 11:27:34,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 428 transitions, 2133 flow. Second operand has 10 states, 10 states have (on average 302.1) internal successors, (3021), 10 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:34,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:34,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-16 11:27:34,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:40,647 INFO L130 PetriNetUnfolder]: 1319/19686 cut-off events. [2022-11-16 11:27:40,647 INFO L131 PetriNetUnfolder]: For 12578/13176 co-relation queries the response was YES. [2022-11-16 11:27:40,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37481 conditions, 19686 events. 1319/19686 cut-off events. For 12578/13176 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 244367 event pairs, 126 based on Foata normal form. 252/18488 useless extension candidates. Maximal degree in co-relation 34654. Up to 994 conditions per place. [2022-11-16 11:27:40,922 INFO L137 encePairwiseOnDemand]: 329/335 looper letters, 99 selfloop transitions, 31 changer transitions 4/522 dead transitions. [2022-11-16 11:27:40,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 522 transitions, 2890 flow [2022-11-16 11:27:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:27:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:27:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4259 transitions. [2022-11-16 11:27:40,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9081023454157783 [2022-11-16 11:27:40,927 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4259 transitions. [2022-11-16 11:27:40,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4259 transitions. [2022-11-16 11:27:40,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:40,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4259 transitions. [2022-11-16 11:27:40,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 304.2142857142857) internal successors, (4259), 14 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:40,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:40,938 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:40,939 INFO L175 Difference]: Start difference. First operand has 442 places, 428 transitions, 2133 flow. Second operand 14 states and 4259 transitions. [2022-11-16 11:27:40,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 522 transitions, 2890 flow [2022-11-16 11:27:41,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 522 transitions, 2876 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 11:27:41,109 INFO L231 Difference]: Finished difference. Result has 457 places, 445 transitions, 2320 flow [2022-11-16 11:27:41,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2320, PETRI_PLACES=457, PETRI_TRANSITIONS=445} [2022-11-16 11:27:41,110 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 167 predicate places. [2022-11-16 11:27:41,110 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 445 transitions, 2320 flow [2022-11-16 11:27:41,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 302.1) internal successors, (3021), 10 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:41,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:41,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:41,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:41,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:41,312 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 11:27:41,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash -414003644, now seen corresponding path program 1 times [2022-11-16 11:27:41,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:41,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208655688] [2022-11-16 11:27:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:41,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:41,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:41,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465038561] [2022-11-16 11:27:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:41,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:41,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:41,333 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:41,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e2e90e-0945-45cf-b31c-6209cd72514a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-16 11:27:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:41,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:27:41,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:27:41,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:27:41,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:41,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208655688] [2022-11-16 11:27:41,815 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:41,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465038561] [2022-11-16 11:27:41,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465038561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:41,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:41,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:41,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035238724] [2022-11-16 11:27:41,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:41,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:41,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:41,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:41,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:41,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 335 [2022-11-16 11:27:41,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 445 transitions, 2320 flow. Second operand has 4 states, 4 states have (on average 274.5) internal successors, (1098), 4 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:41,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:41,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 335 [2022-11-16 11:27:41,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand