./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8 --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 d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --- 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-2329fc7 [2022-12-13 18:23:32,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:23:32,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:23:32,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:23:32,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:23:32,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:23:32,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:23:32,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:23:32,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:23:32,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:23:32,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:23:32,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:23:32,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:23:32,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:23:32,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:23:32,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:23:32,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:23:32,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:23:32,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:23:32,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:23:32,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:23:32,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:23:32,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:23:32,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:23:32,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:23:32,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:23:32,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:23:32,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:23:32,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:23:32,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:23:32,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:23:32,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:23:32,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:23:32,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:23:32,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:23:32,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:23:32,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:23:32,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:23:32,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:23:32,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:23:32,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:23:32,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 18:23:32,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:23:32,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:23:32,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:23:32,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:23:32,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:23:32,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:23:32,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:23:32,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:23:32,192 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:23:32,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:23:32,193 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:23:32,193 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:23:32,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:23:32,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:23:32,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:23:32,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:23:32,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:23:32,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:23:32,193 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 18:23:32,194 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:23:32,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:23:32,194 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:23:32,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:23:32,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:23:32,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:23:32,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:23:32,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:23:32,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:23:32,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:23:32,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:23:32,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:23:32,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:23:32,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:23:32,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:23:32,195 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:23:32,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:23:32,196 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:23:32,196 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 [2022-12-13 18:23:32,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:23:32,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:23:32,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:23:32,414 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:23:32,415 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:23:32,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2022-12-13 18:23:35,019 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:23:35,179 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:23:35,179 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2022-12-13 18:23:35,184 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/data/b70c8053d/ee07b1cc6120430dadc62fda26f22495/FLAG4fd043fe4 [2022-12-13 18:23:35,572 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/data/b70c8053d/ee07b1cc6120430dadc62fda26f22495 [2022-12-13 18:23:35,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:23:35,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:23:35,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:23:35,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:23:35,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:23:35,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@abde05f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35, skipping insertion in model container [2022-12-13 18:23:35,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:23:35,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:23:35,740 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-12-13 18:23:35,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:23:35,752 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:23:35,770 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-12-13 18:23:35,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:23:35,784 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:23:35,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35 WrapperNode [2022-12-13 18:23:35,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:23:35,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:23:35,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:23:35,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:23:35,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,838 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 341 [2022-12-13 18:23:35,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:23:35,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:23:35,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:23:35,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:23:35,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,867 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:23:35,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:23:35,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:23:35,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:23:35,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35" (1/1) ... [2022-12-13 18:23:35,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:23:35,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:23:35,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:23:35,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:23:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:23:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:23:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:23:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:23:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 18:23:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 18:23:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 18:23:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 18:23:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 18:23:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 18:23:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:23:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 18:23:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:23:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:23:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:23:35,930 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:23:36,024 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:23:36,025 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:23:36,439 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:23:36,451 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:23:36,452 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 18:23:36,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:23:36 BoogieIcfgContainer [2022-12-13 18:23:36,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:23:36,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:23:36,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:23:36,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:23:36,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:23:35" (1/3) ... [2022-12-13 18:23:36,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da9eac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:23:36, skipping insertion in model container [2022-12-13 18:23:36,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:23:35" (2/3) ... [2022-12-13 18:23:36,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da9eac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:23:36, skipping insertion in model container [2022-12-13 18:23:36,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:23:36" (3/3) ... [2022-12-13 18:23:36,463 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2022-12-13 18:23:36,471 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:23:36,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:23:36,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-12-13 18:23:36,480 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:23:36,587 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 18:23:36,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 459 transitions, 942 flow [2022-12-13 18:23:36,771 INFO L130 PetriNetUnfolder]: 35/456 cut-off events. [2022-12-13 18:23:36,772 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 18:23:36,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 456 events. 35/456 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1061 event pairs, 0 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 341. Up to 3 conditions per place. [2022-12-13 18:23:36,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 459 transitions, 942 flow [2022-12-13 18:23:36,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 427 transitions, 869 flow [2022-12-13 18:23:36,793 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:23:36,803 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 404 places, 427 transitions, 869 flow [2022-12-13 18:23:36,805 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 404 places, 427 transitions, 869 flow [2022-12-13 18:23:36,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 427 transitions, 869 flow [2022-12-13 18:23:36,867 INFO L130 PetriNetUnfolder]: 33/427 cut-off events. [2022-12-13 18:23:36,868 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:23:36,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 427 events. 33/427 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 971 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 341. Up to 3 conditions per place. [2022-12-13 18:23:36,883 INFO L119 LiptonReduction]: Number of co-enabled transitions 44160 [2022-12-13 18:23:51,461 INFO L134 LiptonReduction]: Checked pairs total: 58157 [2022-12-13 18:23:51,461 INFO L136 LiptonReduction]: Total number of compositions: 546 [2022-12-13 18:23:51,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:23:51,482 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;@127d6489, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:23:51,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2022-12-13 18:23:51,484 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 18:23:51,484 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:23:51,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:23:51,485 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 18:23:51,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-12-13 18:23:51,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:23:51,489 INFO L85 PathProgramCache]: Analyzing trace with hash 59965, now seen corresponding path program 1 times [2022-12-13 18:23:51,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:23:51,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607235869] [2022-12-13 18:23:51,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:23:51,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:23:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:23:51,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:23:51,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607235869] [2022-12-13 18:23:51,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607235869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:23:51,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:23:51,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:23:51,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545133709] [2022-12-13 18:23:51,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:23:51,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:23:51,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:23:51,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:23:51,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:23:51,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1005 [2022-12-13 18:23:51,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 423.6666666666667) internal successors, (1271), 3 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:23:51,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:23:51,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1005 [2022-12-13 18:23:51,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:23:55,144 INFO L130 PetriNetUnfolder]: 25859/35997 cut-off events. [2022-12-13 18:23:55,144 INFO L131 PetriNetUnfolder]: For 1250/1250 co-relation queries the response was YES. [2022-12-13 18:23:55,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73173 conditions, 35997 events. 25859/35997 cut-off events. For 1250/1250 co-relation queries the response was YES. Maximal size of possible extension queue 1555. Compared 214765 event pairs, 22226 based on Foata normal form. 0/14469 useless extension candidates. Maximal degree in co-relation 34416. Up to 18003 conditions per place. [2022-12-13 18:23:55,318 INFO L137 encePairwiseOnDemand]: 987/1005 looper letters, 115 selfloop transitions, 6 changer transitions 0/121 dead transitions. [2022-12-13 18:23:55,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 121 transitions, 514 flow [2022-12-13 18:23:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:23:55,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:23:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1408 transitions. [2022-12-13 18:23:55,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4669983416252073 [2022-12-13 18:23:55,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1408 transitions. [2022-12-13 18:23:55,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1408 transitions. [2022-12-13 18:23:55,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:23:55,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1408 transitions. [2022-12-13 18:23:55,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 469.3333333333333) internal successors, (1408), 3 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:23:55,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 4 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:23:55,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 4 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:23:55,370 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 155 flow. Second operand 3 states and 1408 transitions. [2022-12-13 18:23:55,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 121 transitions, 514 flow [2022-12-13 18:23:55,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 121 transitions, 496 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 18:23:55,392 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 190 flow [2022-12-13 18:23:55,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1005, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=65, PETRI_TRANSITIONS=69} [2022-12-13 18:23:55,396 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2022-12-13 18:23:55,396 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 190 flow [2022-12-13 18:23:55,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 423.6666666666667) internal successors, (1271), 3 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:23:55,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:23:55,398 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 18:23:55,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:23:55,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-12-13 18:23:55,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:23:55,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1861995, now seen corresponding path program 1 times [2022-12-13 18:23:55,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:23:55,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003428028] [2022-12-13 18:23:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:23:55,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:23:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:23:55,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:23:55,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003428028] [2022-12-13 18:23:55,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003428028] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:23:55,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710026509] [2022-12-13 18:23:55,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:23:55,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:23:55,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:23:55,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:23:55,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:23:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:55,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:23:55,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:23:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:23:55,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:23:55,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710026509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:23:55,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:23:55,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 18:23:55,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009706283] [2022-12-13 18:23:55,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:23:55,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:23:55,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:23:55,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:23:55,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:23:55,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1005 [2022-12-13 18:23:55,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 423.75) internal successors, (1695), 4 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:23:55,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:23:55,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1005 [2022-12-13 18:23:55,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:23:58,614 INFO L130 PetriNetUnfolder]: 25859/35994 cut-off events. [2022-12-13 18:23:58,615 INFO L131 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2022-12-13 18:23:58,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72826 conditions, 35994 events. 25859/35994 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 1591. Compared 214800 event pairs, 22226 based on Foata normal form. 0/14475 useless extension candidates. Maximal degree in co-relation 36393. Up to 17999 conditions per place. [2022-12-13 18:23:58,760 INFO L137 encePairwiseOnDemand]: 996/1005 looper letters, 112 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2022-12-13 18:23:58,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 118 transitions, 524 flow [2022-12-13 18:23:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:23:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:23:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1813 transitions. [2022-12-13 18:23:58,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4509950248756219 [2022-12-13 18:23:58,765 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1813 transitions. [2022-12-13 18:23:58,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1813 transitions. [2022-12-13 18:23:58,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:23:58,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1813 transitions. [2022-12-13 18:23:58,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 453.25) internal successors, (1813), 4 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:23:58,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1005.0) internal successors, (5025), 5 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:23:58,777 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1005.0) internal successors, (5025), 5 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:23:58,777 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 190 flow. Second operand 4 states and 1813 transitions. [2022-12-13 18:23:58,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 118 transitions, 524 flow [2022-12-13 18:23:58,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 118 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:23:58,780 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 178 flow [2022-12-13 18:23:58,780 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1005, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2022-12-13 18:23:58,781 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2022-12-13 18:23:58,781 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 178 flow [2022-12-13 18:23:58,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.75) internal successors, (1695), 4 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:23:58,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:23:58,782 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 18:23:58,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:23:58,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:23:58,983 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-12-13 18:23:58,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:23:58,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1861994, now seen corresponding path program 1 times [2022-12-13 18:23:58,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:23:58,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641203147] [2022-12-13 18:23:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:23:58,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:23:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:23:59,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:23:59,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641203147] [2022-12-13 18:23:59,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641203147] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:23:59,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315454638] [2022-12-13 18:23:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:23:59,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:23:59,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:23:59,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:23:59,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:23:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:59,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:23:59,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:23:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:23:59,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:23:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:23:59,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315454638] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:23:59,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:23:59,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 18:23:59,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282052964] [2022-12-13 18:23:59,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:23:59,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:23:59,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:23:59,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:23:59,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:23:59,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1005 [2022-12-13 18:23:59,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 424.14285714285717) internal successors, (2969), 7 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:23:59,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:23:59,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1005 [2022-12-13 18:23:59,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:24:06,516 INFO L130 PetriNetUnfolder]: 64646/89979 cut-off events. [2022-12-13 18:24:06,517 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-12-13 18:24:06,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182038 conditions, 89979 events. 64646/89979 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 3507. Compared 597831 event pairs, 55565 based on Foata normal form. 0/36186 useless extension candidates. Maximal degree in co-relation 145563. Up to 18001 conditions per place. [2022-12-13 18:24:06,824 INFO L137 encePairwiseOnDemand]: 996/1005 looper letters, 268 selfloop transitions, 21 changer transitions 0/289 dead transitions. [2022-12-13 18:24:06,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 289 transitions, 1268 flow [2022-12-13 18:24:06,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:24:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:24:06,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2836 transitions. [2022-12-13 18:24:06,829 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4703150912106136 [2022-12-13 18:24:06,829 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2836 transitions. [2022-12-13 18:24:06,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2836 transitions. [2022-12-13 18:24:06,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:24:06,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2836 transitions. [2022-12-13 18:24:06,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 472.6666666666667) internal successors, (2836), 6 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:06,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1005.0) internal successors, (7035), 7 states have internal predecessors, (7035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:06,844 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1005.0) internal successors, (7035), 7 states have internal predecessors, (7035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:06,844 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 178 flow. Second operand 6 states and 2836 transitions. [2022-12-13 18:24:06,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 289 transitions, 1268 flow [2022-12-13 18:24:06,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 289 transitions, 1255 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:24:06,848 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 327 flow [2022-12-13 18:24:06,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1005, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2022-12-13 18:24:06,849 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2022-12-13 18:24:06,849 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 327 flow [2022-12-13 18:24:06,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 424.14285714285717) internal successors, (2969), 7 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:06,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:24:06,851 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:24:06,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:24:07,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:24:07,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-12-13 18:24:07,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:24:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash -303568694, now seen corresponding path program 1 times [2022-12-13 18:24:07,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:24:07,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178506606] [2022-12-13 18:24:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:24:07,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:24:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:24:07,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:24:07,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178506606] [2022-12-13 18:24:07,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178506606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:24:07,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:24:07,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:24:07,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131787355] [2022-12-13 18:24:07,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:24:07,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:24:07,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:07,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:24:07,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:24:07,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 1005 [2022-12-13 18:24:07,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 418.5) internal successors, (1674), 4 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:07,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:24:07,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 1005 [2022-12-13 18:24:07,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:24:21,725 INFO L130 PetriNetUnfolder]: 134531/186537 cut-off events. [2022-12-13 18:24:21,725 INFO L131 PetriNetUnfolder]: For 1603/1603 co-relation queries the response was YES. [2022-12-13 18:24:21,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377370 conditions, 186537 events. 134531/186537 cut-off events. For 1603/1603 co-relation queries the response was YES. Maximal size of possible extension queue 6809. Compared 1329499 event pairs, 113707 based on Foata normal form. 0/75639 useless extension candidates. Maximal degree in co-relation 239972. Up to 85707 conditions per place. [2022-12-13 18:24:22,442 INFO L137 encePairwiseOnDemand]: 998/1005 looper letters, 195 selfloop transitions, 6 changer transitions 0/201 dead transitions. [2022-12-13 18:24:22,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 201 transitions, 1082 flow [2022-12-13 18:24:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:24:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:24:22,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2260 transitions. [2022-12-13 18:24:22,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44975124378109455 [2022-12-13 18:24:22,450 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2260 transitions. [2022-12-13 18:24:22,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2260 transitions. [2022-12-13 18:24:22,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:24:22,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2260 transitions. [2022-12-13 18:24:22,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:22,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1005.0) internal successors, (6030), 6 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:22,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1005.0) internal successors, (6030), 6 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:22,471 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 327 flow. Second operand 5 states and 2260 transitions. [2022-12-13 18:24:22,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 201 transitions, 1082 flow [2022-12-13 18:24:22,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 201 transitions, 1033 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-12-13 18:24:22,477 INFO L231 Difference]: Finished difference. Result has 75 places, 84 transitions, 344 flow [2022-12-13 18:24:22,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1005, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2022-12-13 18:24:22,478 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2022-12-13 18:24:22,478 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions, 344 flow [2022-12-13 18:24:22,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 418.5) internal successors, (1674), 4 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:22,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:24:22,480 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:24:22,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:24:22,480 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-12-13 18:24:22,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:24:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash -303568944, now seen corresponding path program 1 times [2022-12-13 18:24:22,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:24:22,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183046216] [2022-12-13 18:24:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:24:22,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:24:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:24:22,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:24:22,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183046216] [2022-12-13 18:24:22,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183046216] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:24:22,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:24:22,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:24:22,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048385377] [2022-12-13 18:24:22,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:24:22,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:24:22,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:22,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:24:22,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:24:22,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1005 [2022-12-13 18:24:22,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 415.2) internal successors, (2076), 5 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:22,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:24:22,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1005 [2022-12-13 18:24:22,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:24:47,038 INFO L130 PetriNetUnfolder]: 236890/328390 cut-off events. [2022-12-13 18:24:47,038 INFO L131 PetriNetUnfolder]: For 26545/26545 co-relation queries the response was YES. [2022-12-13 18:24:47,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676061 conditions, 328390 events. 236890/328390 cut-off events. For 26545/26545 co-relation queries the response was YES. Maximal size of possible extension queue 11704. Compared 2485619 event pairs, 199419 based on Foata normal form. 3380/144398 useless extension candidates. Maximal degree in co-relation 406280. Up to 163779 conditions per place. [2022-12-13 18:24:48,415 INFO L137 encePairwiseOnDemand]: 998/1005 looper letters, 180 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2022-12-13 18:24:48,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 192 transitions, 994 flow [2022-12-13 18:24:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:24:48,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:24:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2654 transitions. [2022-12-13 18:24:48,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44013266998341627 [2022-12-13 18:24:48,421 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2654 transitions. [2022-12-13 18:24:48,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2654 transitions. [2022-12-13 18:24:48,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:24:48,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2654 transitions. [2022-12-13 18:24:48,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 442.3333333333333) internal successors, (2654), 6 states have internal predecessors, (2654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:48,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1005.0) internal successors, (7035), 7 states have internal predecessors, (7035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:48,434 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1005.0) internal successors, (7035), 7 states have internal predecessors, (7035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:48,435 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 344 flow. Second operand 6 states and 2654 transitions. [2022-12-13 18:24:48,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 192 transitions, 994 flow [2022-12-13 18:24:48,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 192 transitions, 990 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 18:24:48,447 INFO L231 Difference]: Finished difference. Result has 83 places, 86 transitions, 406 flow [2022-12-13 18:24:48,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1005, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=83, PETRI_TRANSITIONS=86} [2022-12-13 18:24:48,448 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2022-12-13 18:24:48,448 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 86 transitions, 406 flow [2022-12-13 18:24:48,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 415.2) internal successors, (2076), 5 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:48,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:24:48,449 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 18:24:48,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:24:48,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-12-13 18:24:48,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:24:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash -360823364, now seen corresponding path program 2 times [2022-12-13 18:24:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:24:48,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701969311] [2022-12-13 18:24:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:24:48,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:24:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:24:48,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:24:48,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701969311] [2022-12-13 18:24:48,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701969311] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:24:48,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105365753] [2022-12-13 18:24:48,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:24:48,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:24:48,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:24:48,520 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:24:48,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:24:48,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 18:24:48,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:24:48,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:24:48,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:24:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 18:24:48,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:24:48,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105365753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:24:48,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:24:48,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 18:24:48,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835832289] [2022-12-13 18:24:48,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:24:48,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:24:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:24:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:24:48,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1005 [2022-12-13 18:24:48,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 86 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 427.0) internal successors, (1281), 3 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:24:48,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:24:48,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1005 [2022-12-13 18:24:48,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:25:13,492 INFO L130 PetriNetUnfolder]: 236890/328389 cut-off events. [2022-12-13 18:25:13,492 INFO L131 PetriNetUnfolder]: For 56963/56963 co-relation queries the response was YES. [2022-12-13 18:25:14,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687908 conditions, 328389 events. 236890/328389 cut-off events. For 56963/56963 co-relation queries the response was YES. Maximal size of possible extension queue 11649. Compared 2482595 event pairs, 199756 based on Foata normal form. 1/141018 useless extension candidates. Maximal degree in co-relation 413393. Up to 328384 conditions per place. [2022-12-13 18:25:15,021 INFO L137 encePairwiseOnDemand]: 1002/1005 looper letters, 79 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2022-12-13 18:25:15,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 566 flow [2022-12-13 18:25:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:25:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:25:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1339 transitions. [2022-12-13 18:25:15,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44411276948590384 [2022-12-13 18:25:15,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1339 transitions. [2022-12-13 18:25:15,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1339 transitions. [2022-12-13 18:25:15,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:25:15,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1339 transitions. [2022-12-13 18:25:15,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.3333333333333) internal successors, (1339), 3 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:25:15,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 4 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:25:15,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 4 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:25:15,035 INFO L175 Difference]: Start difference. First operand has 83 places, 86 transitions, 406 flow. Second operand 3 states and 1339 transitions. [2022-12-13 18:25:15,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 566 flow [2022-12-13 18:25:15,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 559 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 18:25:15,061 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 401 flow [2022-12-13 18:25:15,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1005, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=401, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2022-12-13 18:25:15,062 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2022-12-13 18:25:15,062 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 401 flow [2022-12-13 18:25:15,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 427.0) internal successors, (1281), 3 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:25:15,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:25:15,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:25:15,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 18:25:15,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 18:25:15,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-12-13 18:25:15,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:25:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash -869529715, now seen corresponding path program 1 times [2022-12-13 18:25:15,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:25:15,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294132659] [2022-12-13 18:25:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:25:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:25:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:25:15,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:25:15,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294132659] [2022-12-13 18:25:15,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294132659] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:25:15,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431049385] [2022-12-13 18:25:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:25:15,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:25:15,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:25:15,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:25:15,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:25:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:15,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 18:25:15,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:25:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:25:15,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:25:15,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431049385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:25:15,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:25:15,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-12-13 18:25:15,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938525902] [2022-12-13 18:25:15,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:25:15,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:25:15,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:25:15,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:25:15,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:25:15,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 429 out of 1005 [2022-12-13 18:25:15,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 431.3333333333333) internal successors, (1294), 3 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:25:15,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:25:15,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 429 of 1005 [2022-12-13 18:25:15,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:25:38,940 INFO L130 PetriNetUnfolder]: 211356/293677 cut-off events. [2022-12-13 18:25:38,940 INFO L131 PetriNetUnfolder]: For 52219/52219 co-relation queries the response was YES. [2022-12-13 18:25:39,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605531 conditions, 293677 events. 211356/293677 cut-off events. For 52219/52219 co-relation queries the response was YES. Maximal size of possible extension queue 10387. Compared 2204381 event pairs, 178588 based on Foata normal form. 3100/129153 useless extension candidates. Maximal degree in co-relation 363908. Up to 293677 conditions per place. [2022-12-13 18:25:40,353 INFO L137 encePairwiseOnDemand]: 1002/1005 looper letters, 81 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2022-12-13 18:25:40,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 82 transitions, 545 flow [2022-12-13 18:25:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:25:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:25:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1347 transitions. [2022-12-13 18:25:40,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44676616915422884 [2022-12-13 18:25:40,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1347 transitions. [2022-12-13 18:25:40,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1347 transitions. [2022-12-13 18:25:40,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:25:40,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1347 transitions. [2022-12-13 18:25:40,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:25:40,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 4 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:25:40,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 4 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:25:40,363 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 401 flow. Second operand 3 states and 1347 transitions. [2022-12-13 18:25:40,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 82 transitions, 545 flow [2022-12-13 18:25:40,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 82 transitions, 526 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 18:25:40,380 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 364 flow [2022-12-13 18:25:40,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1005, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2022-12-13 18:25:40,380 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 6 predicate places. [2022-12-13 18:25:40,380 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 364 flow [2022-12-13 18:25:40,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 431.3333333333333) internal successors, (1294), 3 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:25:40,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:25:40,381 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 18:25:40,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 18:25:40,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:25:40,583 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-12-13 18:25:40,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:25:40,584 INFO L85 PathProgramCache]: Analyzing trace with hash -871157383, now seen corresponding path program 1 times [2022-12-13 18:25:40,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:25:40,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957801872] [2022-12-13 18:25:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:25:40,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:25:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:25:40,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:25:40,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957801872] [2022-12-13 18:25:40,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957801872] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:25:40,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973822028] [2022-12-13 18:25:40,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:25:40,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:25:40,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:25:40,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:25:40,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:25:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:40,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:25:40,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:25:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:25:40,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:25:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:25:40,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973822028] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:25:40,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:25:40,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 18:25:40,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427064008] [2022-12-13 18:25:40,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:25:40,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:25:40,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:25:40,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:25:40,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:25:40,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1005 [2022-12-13 18:25:40,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 364 flow. Second operand has 13 states, 13 states have (on average 424.15384615384613) internal successors, (5514), 13 states have internal predecessors, (5514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:25:40,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:25:40,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1005 [2022-12-13 18:25:40,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:26:34,028 INFO L130 PetriNetUnfolder]: 464418/645145 cut-off events. [2022-12-13 18:26:34,028 INFO L131 PetriNetUnfolder]: For 46783/46783 co-relation queries the response was YES. [2022-12-13 18:26:35,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330142 conditions, 645145 events. 464418/645145 cut-off events. For 46783/46783 co-relation queries the response was YES. Maximal size of possible extension queue 16006. Compared 5105853 event pairs, 392044 based on Foata normal form. 36/276941 useless extension candidates. Maximal degree in co-relation 1330124. Up to 75600 conditions per place. [2022-12-13 18:26:37,225 INFO L137 encePairwiseOnDemand]: 997/1005 looper letters, 568 selfloop transitions, 54 changer transitions 0/622 dead transitions. [2022-12-13 18:26:37,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 622 transitions, 3016 flow [2022-12-13 18:26:37,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:26:37,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 18:26:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5696 transitions. [2022-12-13 18:26:37,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4723051409618574 [2022-12-13 18:26:37,234 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5696 transitions. [2022-12-13 18:26:37,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5696 transitions. [2022-12-13 18:26:37,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:26:37,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5696 transitions. [2022-12-13 18:26:37,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 474.6666666666667) internal successors, (5696), 12 states have internal predecessors, (5696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:26:37,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1005.0) internal successors, (13065), 13 states have internal predecessors, (13065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:26:37,256 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1005.0) internal successors, (13065), 13 states have internal predecessors, (13065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:26:37,257 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 364 flow. Second operand 12 states and 5696 transitions. [2022-12-13 18:26:37,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 622 transitions, 3016 flow [2022-12-13 18:26:37,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 622 transitions, 3015 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:26:37,286 INFO L231 Difference]: Finished difference. Result has 94 places, 112 transitions, 747 flow [2022-12-13 18:26:37,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1005, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=747, PETRI_PLACES=94, PETRI_TRANSITIONS=112} [2022-12-13 18:26:37,287 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 22 predicate places. [2022-12-13 18:26:37,287 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 112 transitions, 747 flow [2022-12-13 18:26:37,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 424.15384615384613) internal successors, (5514), 13 states have internal predecessors, (5514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:26:37,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:26:37,288 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:26:37,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:26:37,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:26:37,489 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-12-13 18:26:37,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:26:37,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1756635384, now seen corresponding path program 1 times [2022-12-13 18:26:37,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:26:37,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598409200] [2022-12-13 18:26:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:26:37,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:26:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:26:37,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:26:37,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598409200] [2022-12-13 18:26:37,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598409200] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:26:37,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955102209] [2022-12-13 18:26:37,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:26:37,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:26:37,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:26:37,560 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:26:37,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:26:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:37,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 18:26:37,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:26:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:26:37,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:26:37,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955102209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:26:37,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:26:37,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 18:26:37,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623005524] [2022-12-13 18:26:37,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:26:37,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:26:37,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:26:37,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:26:37,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:26:37,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 1005 [2022-12-13 18:26:37,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 112 transitions, 747 flow. Second operand has 4 states, 4 states have (on average 428.75) internal successors, (1715), 4 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:26:37,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:26:37,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 1005 [2022-12-13 18:26:37,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:27:30,642 INFO L130 PetriNetUnfolder]: 451958/628965 cut-off events. [2022-12-13 18:27:30,642 INFO L131 PetriNetUnfolder]: For 46842/46842 co-relation queries the response was YES. [2022-12-13 18:27:32,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273774 conditions, 628965 events. 451958/628965 cut-off events. For 46842/46842 co-relation queries the response was YES. Maximal size of possible extension queue 15830. Compared 4992177 event pairs, 383548 based on Foata normal form. 6820/272873 useless extension candidates. Maximal degree in co-relation 1273749. Up to 628953 conditions per place. [2022-12-13 18:27:34,144 INFO L137 encePairwiseOnDemand]: 1002/1005 looper letters, 98 selfloop transitions, 12 changer transitions 0/110 dead transitions. [2022-12-13 18:27:34,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 110 transitions, 950 flow [2022-12-13 18:27:34,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:27:34,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:27:34,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1766 transitions. [2022-12-13 18:27:34,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4393034825870647 [2022-12-13 18:27:34,149 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1766 transitions. [2022-12-13 18:27:34,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1766 transitions. [2022-12-13 18:27:34,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:27:34,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1766 transitions. [2022-12-13 18:27:34,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 441.5) internal successors, (1766), 4 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:27:34,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1005.0) internal successors, (5025), 5 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:27:34,157 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1005.0) internal successors, (5025), 5 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:27:34,157 INFO L175 Difference]: Start difference. First operand has 94 places, 112 transitions, 747 flow. Second operand 4 states and 1766 transitions. [2022-12-13 18:27:34,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 110 transitions, 950 flow [2022-12-13 18:27:34,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 110 transitions, 770 flow, removed 39 selfloop flow, removed 8 redundant places. [2022-12-13 18:27:34,162 INFO L231 Difference]: Finished difference. Result has 88 places, 110 transitions, 574 flow [2022-12-13 18:27:34,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1005, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=574, PETRI_PLACES=88, PETRI_TRANSITIONS=110} [2022-12-13 18:27:34,162 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 16 predicate places. [2022-12-13 18:27:34,162 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 110 transitions, 574 flow [2022-12-13 18:27:34,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 428.75) internal successors, (1715), 4 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:27:34,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:27:34,163 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:27:34,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:27:34,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bf4f94-c554-45ee-85b0-d4b69aa1e409/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:27:34,364 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-12-13 18:27:34,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash 328303061, now seen corresponding path program 1 times [2022-12-13 18:27:34,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:34,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703249813] [2022-12-13 18:27:34,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:34,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:27:34,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:34,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703249813] [2022-12-13 18:27:34,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703249813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:34,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:34,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:27:34,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68230489] [2022-12-13 18:27:34,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:34,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:27:34,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:34,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:27:34,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:27:34,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 430 out of 1005 [2022-12-13 18:27:34,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 110 transitions, 574 flow. Second operand has 3 states, 3 states have (on average 432.6666666666667) internal successors, (1298), 3 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:27:34,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:27:34,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 430 of 1005 [2022-12-13 18:27:34,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:29:09,125 INFO L130 PetriNetUnfolder]: 800878/1113845 cut-off events. [2022-12-13 18:29:09,125 INFO L131 PetriNetUnfolder]: For 6038/6038 co-relation queries the response was YES. [2022-12-13 18:29:12,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2254864 conditions, 1113845 events. 800878/1113845 cut-off events. For 6038/6038 co-relation queries the response was YES. Maximal size of possible extension queue 27589. Compared 9587823 event pairs, 383548 based on Foata normal form. 0/473909 useless extension candidates. Maximal degree in co-relation 2254842. Up to 628966 conditions per place. [2022-12-13 18:29:15,464 INFO L137 encePairwiseOnDemand]: 1001/1005 looper letters, 152 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2022-12-13 18:29:15,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 154 transitions, 975 flow [2022-12-13 18:29:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:29:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1393 transitions. [2022-12-13 18:29:15,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46202321724709783 [2022-12-13 18:29:15,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1393 transitions. [2022-12-13 18:29:15,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1393 transitions. [2022-12-13 18:29:15,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:29:15,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1393 transitions. [2022-12-13 18:29:15,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 464.3333333333333) internal successors, (1393), 3 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:15,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 4 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:15,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 4 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:15,473 INFO L175 Difference]: Start difference. First operand has 88 places, 110 transitions, 574 flow. Second operand 3 states and 1393 transitions. [2022-12-13 18:29:15,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 154 transitions, 975 flow [2022-12-13 18:29:15,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 154 transitions, 962 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:29:15,477 INFO L231 Difference]: Finished difference. Result has 89 places, 111 transitions, 575 flow [2022-12-13 18:29:15,478 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1005, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=575, PETRI_PLACES=89, PETRI_TRANSITIONS=111} [2022-12-13 18:29:15,478 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 17 predicate places. [2022-12-13 18:29:15,478 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 111 transitions, 575 flow [2022-12-13 18:29:15,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 432.6666666666667) internal successors, (1298), 3 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:15,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:29:15,479 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:15,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:29:15,479 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-12-13 18:29:15,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:15,480 INFO L85 PathProgramCache]: Analyzing trace with hash 328314849, now seen corresponding path program 1 times [2022-12-13 18:29:15,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:15,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979227350] [2022-12-13 18:29:15,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:15,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:29:15,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:15,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979227350] [2022-12-13 18:29:15,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979227350] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:15,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:15,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:29:15,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092358899] [2022-12-13 18:29:15,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:15,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:29:15,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:15,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:29:15,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:15,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1005 [2022-12-13 18:29:15,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 111 transitions, 575 flow. Second operand has 5 states, 5 states have (on average 415.6) internal successors, (2078), 5 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:15,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:29:15,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1005 [2022-12-13 18:29:15,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand