./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.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_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/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_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/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_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/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 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --- 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 11:17:04,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:17:04,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:17:04,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:17:04,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:17:04,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:17:04,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:17:04,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:17:04,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:17:04,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:17:04,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:17:04,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:17:04,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:17:04,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:17:04,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:17:04,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:17:04,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:17:04,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:17:04,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:17:04,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:17:04,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:17:04,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:17:04,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:17:04,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:17:04,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:17:04,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:17:04,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:17:04,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:17:04,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:17:04,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:17:04,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:17:04,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:17:04,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:17:04,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:17:04,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:17:04,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:17:04,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:17:04,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:17:04,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:17:04,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:17:04,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:17:04,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:17:04,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:17:04,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:17:04,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:17:04,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:17:04,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:17:04,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:17:04,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:17:04,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:17:04,953 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:17:04,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:17:04,954 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:17:04,954 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:17:04,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:17:04,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:17:04,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:17:04,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:17:04,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:17:04,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:17:04,958 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:17:04,958 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:17:04,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:17:04,959 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:17:04,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:17:04,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:17:04,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:17:04,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:17:04,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:17:04,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:17:04,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:17:04,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:17:04,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:17:04,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:17:04,962 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:17:04,962 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:17:04,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:17:04,963 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_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 [2022-11-16 11:17:05,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:17:05,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:17:05,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:17:05,361 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:17:05,362 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:17:05,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-11-16 11:17:05,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/data/e4be4943f/f1563ffc586d45239320d534ee59b908/FLAGa2e12754a [2022-11-16 11:17:06,029 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:17:06,030 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-11-16 11:17:06,039 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/data/e4be4943f/f1563ffc586d45239320d534ee59b908/FLAGa2e12754a [2022-11-16 11:17:06,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/data/e4be4943f/f1563ffc586d45239320d534ee59b908 [2022-11-16 11:17:06,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:17:06,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:17:06,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:17:06,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:17:06,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:17:06,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5e989f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06, skipping insertion in model container [2022-11-16 11:17:06,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:17:06,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:17:06,672 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_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3345,3358] [2022-11-16 11:17:06,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:17:06,693 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:17:06,757 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_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3345,3358] [2022-11-16 11:17:06,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:17:06,778 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:17:06,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06 WrapperNode [2022-11-16 11:17:06,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:17:06,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:17:06,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:17:06,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:17:06,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,845 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 182 [2022-11-16 11:17:06,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:17:06,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:17:06,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:17:06,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:17:06,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,918 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:17:06,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:17:06,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:17:06,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:17:06,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06" (1/1) ... [2022-11-16 11:17:06,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:17:06,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:17:06,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:17:07,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:17:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:17:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:17:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:17:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:17:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:17:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:17:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:17:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:17:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:17:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:17:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:17:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:17:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:17:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:17:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:17:07,045 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 11:17:07,207 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:17:07,210 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:17:07,900 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:17:07,919 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:17:07,925 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 11:17:07,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:17:07 BoogieIcfgContainer [2022-11-16 11:17:07,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:17:07,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:17:07,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:17:07,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:17:07,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:17:06" (1/3) ... [2022-11-16 11:17:07,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6255ccd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:17:07, skipping insertion in model container [2022-11-16 11:17:07,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:06" (2/3) ... [2022-11-16 11:17:07,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6255ccd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:17:07, skipping insertion in model container [2022-11-16 11:17:07,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:17:07" (3/3) ... [2022-11-16 11:17:07,942 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-11-16 11:17:07,951 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:17:07,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:17:07,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 11:17:07,962 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:17:08,068 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:17:08,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 345 transitions, 714 flow [2022-11-16 11:17:08,325 INFO L130 PetriNetUnfolder]: 29/342 cut-off events. [2022-11-16 11:17:08,326 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:17:08,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 342 events. 29/342 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 547 event pairs, 0 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-11-16 11:17:08,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 345 transitions, 714 flow [2022-11-16 11:17:08,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 313 transitions, 641 flow [2022-11-16 11:17:08,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:17:08,384 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;@923a28e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:17:08,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-11-16 11:17:08,405 INFO L130 PetriNetUnfolder]: 3/82 cut-off events. [2022-11-16 11:17:08,406 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:17:08,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:17:08,407 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] [2022-11-16 11:17:08,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:17:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:08,413 INFO L85 PathProgramCache]: Analyzing trace with hash -843872005, now seen corresponding path program 1 times [2022-11-16 11:17:08,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:08,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224883440] [2022-11-16 11:17:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:08,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:08,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:08,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224883440] [2022-11-16 11:17:08,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224883440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:08,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:08,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:17:08,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773690465] [2022-11-16 11:17:08,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:08,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:17:08,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:08,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:17:08,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:08,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 345 [2022-11-16 11:17:08,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 313 transitions, 641 flow. Second operand has 4 states, 4 states have (on average 289.5) internal successors, (1158), 4 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:08,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:17:08,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 345 [2022-11-16 11:17:08,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:17:09,170 INFO L130 PetriNetUnfolder]: 29/490 cut-off events. [2022-11-16 11:17:09,171 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-16 11:17:09,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 490 events. 29/490 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1567 event pairs, 0 based on Foata normal form. 24/448 useless extension candidates. Maximal degree in co-relation 470. Up to 44 conditions per place. [2022-11-16 11:17:09,179 INFO L137 encePairwiseOnDemand]: 313/345 looper letters, 58 selfloop transitions, 14 changer transitions 6/332 dead transitions. [2022-11-16 11:17:09,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 332 transitions, 838 flow [2022-11-16 11:17:09,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:17:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:17:09,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1536 transitions. [2022-11-16 11:17:09,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8904347826086957 [2022-11-16 11:17:09,201 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1536 transitions. [2022-11-16 11:17:09,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1536 transitions. [2022-11-16 11:17:09,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:17:09,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1536 transitions. [2022-11-16 11:17:09,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.2) internal successors, (1536), 5 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states 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 11:17:09,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states 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 11:17:09,228 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states 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 11:17:09,230 INFO L175 Difference]: Start difference. First operand has 296 places, 313 transitions, 641 flow. Second operand 5 states and 1536 transitions. [2022-11-16 11:17:09,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 332 transitions, 838 flow [2022-11-16 11:17:09,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 332 transitions, 820 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:17:09,244 INFO L231 Difference]: Finished difference. Result has 298 places, 306 transitions, 700 flow [2022-11-16 11:17:09,247 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=700, PETRI_PLACES=298, PETRI_TRANSITIONS=306} [2022-11-16 11:17:09,251 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 2 predicate places. [2022-11-16 11:17:09,252 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 306 transitions, 700 flow [2022-11-16 11:17:09,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.5) internal successors, (1158), 4 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:09,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:17:09,254 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] [2022-11-16 11:17:09,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:17:09,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:17:09,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:09,255 INFO L85 PathProgramCache]: Analyzing trace with hash -652554126, now seen corresponding path program 1 times [2022-11-16 11:17:09,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:09,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628026794] [2022-11-16 11:17:09,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:09,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,635 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 11:17:09,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:09,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628026794] [2022-11-16 11:17:09,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628026794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:17:09,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309291733] [2022-11-16 11:17:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:09,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:17:09,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:17:09,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:17:09,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:17:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:17:09,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:17:09,968 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 11:17:09,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:17:10,068 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 11:17:10,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309291733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:17:10,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:17:10,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:17:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063017079] [2022-11-16 11:17:10,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:17:10,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:17:10,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:10,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:17:10,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:17:10,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 345 [2022-11-16 11:17:10,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 306 transitions, 700 flow. Second operand has 12 states, 12 states have (on average 290.6666666666667) internal successors, (3488), 12 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states 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 11:17:10,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:17:10,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 345 [2022-11-16 11:17:10,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:17:10,830 INFO L130 PetriNetUnfolder]: 71/1057 cut-off events. [2022-11-16 11:17:10,830 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-16 11:17:10,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 1057 events. 71/1057 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5153 event pairs, 0 based on Foata normal form. 9/931 useless extension candidates. Maximal degree in co-relation 696. Up to 35 conditions per place. [2022-11-16 11:17:10,841 INFO L137 encePairwiseOnDemand]: 322/345 looper letters, 109 selfloop transitions, 62 changer transitions 0/425 dead transitions. [2022-11-16 11:17:10,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 425 transitions, 1382 flow [2022-11-16 11:17:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:17:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:17:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5364 transitions. [2022-11-16 11:17:10,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.863768115942029 [2022-11-16 11:17:10,852 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5364 transitions. [2022-11-16 11:17:10,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5364 transitions. [2022-11-16 11:17:10,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:17:10,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5364 transitions. [2022-11-16 11:17:10,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 298.0) internal successors, (5364), 18 states have internal predecessors, (5364), 0 states have call successors, (0), 0 states 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 11:17:10,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 345.0) internal successors, (6555), 19 states have internal predecessors, (6555), 0 states have call successors, (0), 0 states 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 11:17:10,882 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 345.0) internal successors, (6555), 19 states have internal predecessors, (6555), 0 states have call successors, (0), 0 states 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 11:17:10,883 INFO L175 Difference]: Start difference. First operand has 298 places, 306 transitions, 700 flow. Second operand 18 states and 5364 transitions. [2022-11-16 11:17:10,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 425 transitions, 1382 flow [2022-11-16 11:17:10,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 425 transitions, 1374 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:17:10,894 INFO L231 Difference]: Finished difference. Result has 312 places, 348 transitions, 1062 flow [2022-11-16 11:17:10,895 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1062, PETRI_PLACES=312, PETRI_TRANSITIONS=348} [2022-11-16 11:17:10,896 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 16 predicate places. [2022-11-16 11:17:10,896 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 348 transitions, 1062 flow [2022-11-16 11:17:10,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 290.6666666666667) internal successors, (3488), 12 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states 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 11:17:10,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:17:10,898 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:10,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:17:11,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:17:11,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:17:11,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:11,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1245659227, now seen corresponding path program 1 times [2022-11-16 11:17:11,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:11,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892785400] [2022-11-16 11:17:11,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:11,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:11,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:11,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892785400] [2022-11-16 11:17:11,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892785400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:17:11,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100785951] [2022-11-16 11:17:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:11,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:17:11,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:17:11,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:17:11,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:17:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:11,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:17:11,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:17:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:11,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:17:11,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100785951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:11,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:17:11,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:17:11,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274701373] [2022-11-16 11:17:11,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:11,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:17:11,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:11,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:17:11,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:17:11,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 345 [2022-11-16 11:17:11,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 348 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states 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 11:17:11,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:17:11,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 345 [2022-11-16 11:17:11,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:17:11,883 INFO L130 PetriNetUnfolder]: 71/1045 cut-off events. [2022-11-16 11:17:11,884 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-16 11:17:11,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 1045 events. 71/1045 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5072 event pairs, 0 based on Foata normal form. 12/922 useless extension candidates. Maximal degree in co-relation 1070. Up to 68 conditions per place. [2022-11-16 11:17:11,894 INFO L137 encePairwiseOnDemand]: 328/345 looper letters, 59 selfloop transitions, 43 changer transitions 0/356 dead transitions. [2022-11-16 11:17:11,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 356 transitions, 1237 flow [2022-11-16 11:17:11,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:17:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:17:11,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2088 transitions. [2022-11-16 11:17:11,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8645962732919255 [2022-11-16 11:17:11,900 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2088 transitions. [2022-11-16 11:17:11,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2088 transitions. [2022-11-16 11:17:11,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:17:11,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2088 transitions. [2022-11-16 11:17:11,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 298.2857142857143) internal successors, (2088), 7 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states 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 11:17:11,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states 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 11:17:11,914 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states 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 11:17:11,914 INFO L175 Difference]: Start difference. First operand has 312 places, 348 transitions, 1062 flow. Second operand 7 states and 2088 transitions. [2022-11-16 11:17:11,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 356 transitions, 1237 flow [2022-11-16 11:17:11,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 356 transitions, 1121 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 11:17:11,930 INFO L231 Difference]: Finished difference. Result has 306 places, 336 transitions, 951 flow [2022-11-16 11:17:11,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=951, PETRI_PLACES=306, PETRI_TRANSITIONS=336} [2022-11-16 11:17:11,933 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 10 predicate places. [2022-11-16 11:17:11,934 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 336 transitions, 951 flow [2022-11-16 11:17:11,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states 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 11:17:11,935 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:17:11,935 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] [2022-11-16 11:17:11,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:17:12,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:17:12,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:17:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash 259833019, now seen corresponding path program 2 times [2022-11-16 11:17:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:12,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145023568] [2022-11-16 11:17:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:12,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:12,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:12,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145023568] [2022-11-16 11:17:12,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145023568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:17:12,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738706349] [2022-11-16 11:17:12,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:17:12,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:17:12,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:17:12,474 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:17:12,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:17:12,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:17:12,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:17:12,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:17:12,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:17:12,808 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 11:17:12,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:17:13,025 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 11:17:13,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738706349] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:17:13,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:17:13,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:17:13,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574494214] [2022-11-16 11:17:13,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:17:13,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:17:13,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:13,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:17:13,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:17:13,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 345 [2022-11-16 11:17:13,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 336 transitions, 951 flow. Second operand has 18 states, 18 states have (on average 257.6111111111111) internal successors, (4637), 18 states have internal predecessors, (4637), 0 states have call successors, (0), 0 states 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 11:17:13,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:17:13,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 345 [2022-11-16 11:17:13,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:17:16,044 INFO L130 PetriNetUnfolder]: 1786/6434 cut-off events. [2022-11-16 11:17:16,045 INFO L131 PetriNetUnfolder]: For 392/392 co-relation queries the response was YES. [2022-11-16 11:17:16,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10212 conditions, 6434 events. 1786/6434 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 57557 event pairs, 1008 based on Foata normal form. 6/4948 useless extension candidates. Maximal degree in co-relation 8190. Up to 406 conditions per place. [2022-11-16 11:17:16,133 INFO L137 encePairwiseOnDemand]: 317/345 looper letters, 248 selfloop transitions, 97 changer transitions 0/565 dead transitions. [2022-11-16 11:17:16,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 565 transitions, 2236 flow [2022-11-16 11:17:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 11:17:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 11:17:16,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 12797 transitions. [2022-11-16 11:17:16,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7569949719018042 [2022-11-16 11:17:16,165 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 12797 transitions. [2022-11-16 11:17:16,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 12797 transitions. [2022-11-16 11:17:16,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:17:16,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 12797 transitions. [2022-11-16 11:17:16,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 261.16326530612247) internal successors, (12797), 49 states have internal predecessors, (12797), 0 states have call successors, (0), 0 states 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 11:17:16,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 345.0) internal successors, (17250), 50 states have internal predecessors, (17250), 0 states have call successors, (0), 0 states 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 11:17:16,257 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 345.0) internal successors, (17250), 50 states have internal predecessors, (17250), 0 states have call successors, (0), 0 states 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 11:17:16,257 INFO L175 Difference]: Start difference. First operand has 306 places, 336 transitions, 951 flow. Second operand 49 states and 12797 transitions. [2022-11-16 11:17:16,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 565 transitions, 2236 flow [2022-11-16 11:17:16,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 565 transitions, 2167 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:17:16,271 INFO L231 Difference]: Finished difference. Result has 352 places, 376 transitions, 1294 flow [2022-11-16 11:17:16,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1294, PETRI_PLACES=352, PETRI_TRANSITIONS=376} [2022-11-16 11:17:16,273 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 56 predicate places. [2022-11-16 11:17:16,273 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 376 transitions, 1294 flow [2022-11-16 11:17:16,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 257.6111111111111) internal successors, (4637), 18 states have internal predecessors, (4637), 0 states have call successors, (0), 0 states 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 11:17:16,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:17:16,276 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] [2022-11-16 11:17:16,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:17:16,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506d5dc-11ef-43b7-96a7-f7dc25f75d0a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:17:16,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:17:16,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:16,486 INFO L85 PathProgramCache]: Analyzing trace with hash 311231958, now seen corresponding path program 1 times [2022-11-16 11:17:16,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:16,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448003824] [2022-11-16 11:17:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:16,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:16,917 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 11:17:16,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:16,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448003824] [2022-11-16 11:17:16,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448003824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:16,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:16,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:17:16,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707697439] [2022-11-16 11:17:16,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:16,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:17:16,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:16,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:17:16,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:17:16,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 345 [2022-11-16 11:17:16,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 376 transitions, 1294 flow. Second operand has 11 states, 11 states have (on average 233.45454545454547) internal successors, (2568), 11 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 11:17:16,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:17:16,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 345 [2022-11-16 11:17:16,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:17:26,325 INFO L130 PetriNetUnfolder]: 19839/49441 cut-off events. [2022-11-16 11:17:26,325 INFO L131 PetriNetUnfolder]: For 3501/3501 co-relation queries the response was YES. [2022-11-16 11:17:26,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78750 conditions, 49441 events. 19839/49441 cut-off events. For 3501/3501 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 561759 event pairs, 11410 based on Foata normal form. 0/34811 useless extension candidates. Maximal degree in co-relation 67471. Up to 12848 conditions per place. [2022-11-16 11:17:26,792 INFO L137 encePairwiseOnDemand]: 327/345 looper letters, 234 selfloop transitions, 35 changer transitions 0/496 dead transitions. [2022-11-16 11:17:26,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 496 transitions, 2315 flow [2022-11-16 11:17:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:17:26,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 11:17:26,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4060 transitions. [2022-11-16 11:17:26,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6922421142369991 [2022-11-16 11:17:26,802 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4060 transitions. [2022-11-16 11:17:26,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4060 transitions. [2022-11-16 11:17:26,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:17:26,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4060 transitions. [2022-11-16 11:17:26,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 238.8235294117647) internal successors, (4060), 17 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states 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 11:17:26,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 345.0) internal successors, (6210), 18 states have internal predecessors, (6210), 0 states have call successors, (0), 0 states 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 11:17:26,827 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 345.0) internal successors, (6210), 18 states have internal predecessors, (6210), 0 states have call successors, (0), 0 states 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 11:17:26,827 INFO L175 Difference]: Start difference. First operand has 352 places, 376 transitions, 1294 flow. Second operand 17 states and 4060 transitions. [2022-11-16 11:17:26,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 496 transitions, 2315 flow [2022-11-16 11:17:26,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 496 transitions, 2134 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-11-16 11:17:26,841 INFO L231 Difference]: Finished difference. Result has 362 places, 390 transitions, 1373 flow [2022-11-16 11:17:26,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1373, PETRI_PLACES=362, PETRI_TRANSITIONS=390} [2022-11-16 11:17:26,845 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 66 predicate places. [2022-11-16 11:17:26,845 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 390 transitions, 1373 flow [2022-11-16 11:17:26,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 233.45454545454547) internal successors, (2568), 11 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 11:17:26,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:17:26,847 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] [2022-11-16 11:17:26,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:17:26,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:17:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1058256961, now seen corresponding path program 1 times [2022-11-16 11:17:26,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:26,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752837814] [2022-11-16 11:17:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:26,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:27,310 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 11:17:27,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:27,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752837814] [2022-11-16 11:17:27,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752837814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:27,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:27,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:17:27,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503217822] [2022-11-16 11:17:27,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:27,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:17:27,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:27,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:17:27,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:17:27,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 345 [2022-11-16 11:17:27,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 390 transitions, 1373 flow. Second operand has 8 states, 8 states have (on average 264.375) internal successors, (2115), 8 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states 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 11:17:27,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:17:27,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 345 [2022-11-16 11:17:27,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:17:42,313 INFO L130 PetriNetUnfolder]: 33573/84027 cut-off events. [2022-11-16 11:17:42,313 INFO L131 PetriNetUnfolder]: For 8092/8092 co-relation queries the response was YES. [2022-11-16 11:17:42,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134572 conditions, 84027 events. 33573/84027 cut-off events. For 8092/8092 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 1031446 event pairs, 19103 based on Foata normal form. 952/62236 useless extension candidates. Maximal degree in co-relation 115281. Up to 25536 conditions per place. [2022-11-16 11:17:43,291 INFO L137 encePairwiseOnDemand]: 330/345 looper letters, 165 selfloop transitions, 37 changer transitions 0/446 dead transitions. [2022-11-16 11:17:43,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 446 transitions, 1973 flow [2022-11-16 11:17:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:17:43,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:17:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3231 transitions. [2022-11-16 11:17:43,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7804347826086957 [2022-11-16 11:17:43,304 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3231 transitions. [2022-11-16 11:17:43,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3231 transitions. [2022-11-16 11:17:43,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:17:43,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3231 transitions. [2022-11-16 11:17:43,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 269.25) internal successors, (3231), 12 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states 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 11:17:43,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 345.0) internal successors, (4485), 13 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states 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 11:17:43,330 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 345.0) internal successors, (4485), 13 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states 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 11:17:43,330 INFO L175 Difference]: Start difference. First operand has 362 places, 390 transitions, 1373 flow. Second operand 12 states and 3231 transitions. [2022-11-16 11:17:43,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 446 transitions, 1973 flow [2022-11-16 11:17:43,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 446 transitions, 1951 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:17:43,364 INFO L231 Difference]: Finished difference. Result has 371 places, 394 transitions, 1479 flow [2022-11-16 11:17:43,365 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1479, PETRI_PLACES=371, PETRI_TRANSITIONS=394} [2022-11-16 11:17:43,368 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 75 predicate places. [2022-11-16 11:17:43,369 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 394 transitions, 1479 flow [2022-11-16 11:17:43,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 264.375) internal successors, (2115), 8 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states 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 11:17:43,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:17:43,370 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] [2022-11-16 11:17:43,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:17:43,371 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:17:43,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:43,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1998477768, now seen corresponding path program 1 times [2022-11-16 11:17:43,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:43,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451805123] [2022-11-16 11:17:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:43,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:43,514 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 11:17:43,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:43,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451805123] [2022-11-16 11:17:43,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451805123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:43,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:43,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:17:43,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194902189] [2022-11-16 11:17:43,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:43,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:17:43,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:43,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:17:43,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:43,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 345 [2022-11-16 11:17:43,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 394 transitions, 1479 flow. Second operand has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 11:17:43,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:17:43,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 345 [2022-11-16 11:17:43,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:17:45,596 INFO L130 PetriNetUnfolder]: 2108/10443 cut-off events. [2022-11-16 11:17:45,596 INFO L131 PetriNetUnfolder]: For 1145/1173 co-relation queries the response was YES. [2022-11-16 11:17:45,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17567 conditions, 10443 events. 2108/10443 cut-off events. For 1145/1173 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 116816 event pairs, 728 based on Foata normal form. 28/9183 useless extension candidates. Maximal degree in co-relation 14991. Up to 2073 conditions per place. [2022-11-16 11:17:45,780 INFO L137 encePairwiseOnDemand]: 339/345 looper letters, 34 selfloop transitions, 4 changer transitions 0/413 dead transitions. [2022-11-16 11:17:45,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 413 transitions, 1604 flow [2022-11-16 11:17:45,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:17:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:17:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1590 transitions. [2022-11-16 11:17:45,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9217391304347826 [2022-11-16 11:17:45,784 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1590 transitions. [2022-11-16 11:17:45,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1590 transitions. [2022-11-16 11:17:45,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:17:45,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1590 transitions. [2022-11-16 11:17:45,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states 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 11:17:45,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states 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 11:17:45,791 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states 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 11:17:45,792 INFO L175 Difference]: Start difference. First operand has 371 places, 394 transitions, 1479 flow. Second operand 5 states and 1590 transitions. [2022-11-16 11:17:45,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 413 transitions, 1604 flow [2022-11-16 11:17:45,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 413 transitions, 1578 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:17:45,808 INFO L231 Difference]: Finished difference. Result has 372 places, 397 transitions, 1483 flow [2022-11-16 11:17:45,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1483, PETRI_PLACES=372, PETRI_TRANSITIONS=397} [2022-11-16 11:17:45,810 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 76 predicate places. [2022-11-16 11:17:45,810 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 397 transitions, 1483 flow [2022-11-16 11:17:45,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 11:17:45,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:17:45,811 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] [2022-11-16 11:17:45,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:17:45,812 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:17:45,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:45,812 INFO L85 PathProgramCache]: Analyzing trace with hash -213871381, now seen corresponding path program 1 times [2022-11-16 11:17:45,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:45,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494444602] [2022-11-16 11:17:45,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:45,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:46,192 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 11:17:46,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:46,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494444602] [2022-11-16 11:17:46,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494444602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:46,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:46,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:17:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982398345] [2022-11-16 11:17:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:46,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:17:46,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:46,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:17:46,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:17:46,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 345 [2022-11-16 11:17:46,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 397 transitions, 1483 flow. Second operand has 11 states, 11 states have (on average 233.54545454545453) internal successors, (2569), 11 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states 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 11:17:46,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:17:46,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 345 [2022-11-16 11:17:46,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand