./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:10:02,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:10:02,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:10:02,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:10:02,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:10:02,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:10:03,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:10:03,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:10:03,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:10:03,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:10:03,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:10:03,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:10:03,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:10:03,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:10:03,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:10:03,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:10:03,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:10:03,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:10:03,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:10:03,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:10:03,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:10:03,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:10:03,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:10:03,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:10:03,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:10:03,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:10:03,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:10:03,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:10:03,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:10:03,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:10:03,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:10:03,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:10:03,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:10:03,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:10:03,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:10:03,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:10:03,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:10:03,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:10:03,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:10:03,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:10:03,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:10:03,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:10:03,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:10:03,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:10:03,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:10:03,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:10:03,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:10:03,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:10:03,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:10:03,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:10:03,149 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:10:03,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:10:03,150 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:10:03,151 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:10:03,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:10:03,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:10:03,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:10:03,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:10:03,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:10:03,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:10:03,153 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:10:03,153 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:10:03,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:10:03,153 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:10:03,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:10:03,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:10:03,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:10:03,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:10:03,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:10:03,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:10:03,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:10:03,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:10:03,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:10:03,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:10:03,158 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:10:03,159 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:10:03,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:10:03,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2022-11-16 12:10:03,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:10:03,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:10:03,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:10:03,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:10:03,554 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:10:03,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-16 12:10:03,644 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/data/2b9354e24/243be213c7ed47e49c18e4fbc54ecea2/FLAGa4c60d3fb [2022-11-16 12:10:04,412 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:10:04,413 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-16 12:10:04,447 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/data/2b9354e24/243be213c7ed47e49c18e4fbc54ecea2/FLAGa4c60d3fb [2022-11-16 12:10:04,620 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/data/2b9354e24/243be213c7ed47e49c18e4fbc54ecea2 [2022-11-16 12:10:04,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:10:04,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:10:04,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:10:04,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:10:04,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:10:04,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:10:04" (1/1) ... [2022-11-16 12:10:04,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1410d807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:04, skipping insertion in model container [2022-11-16 12:10:04,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:10:04" (1/1) ... [2022-11-16 12:10:04,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:10:04,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:10:05,392 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:10:05,392 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:10:05,393 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:10:05,393 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:10:05,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:10:05,457 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:10:05,523 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:10:05,528 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:10:05,529 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:10:05,530 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:10:05,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:10:05,647 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:10:05,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05 WrapperNode [2022-11-16 12:10:05,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:10:05,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:10:05,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:10:05,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:10:05,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05" (1/1) ... [2022-11-16 12:10:05,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05" (1/1) ... [2022-11-16 12:10:05,759 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 166 [2022-11-16 12:10:05,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:10:05,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:10:05,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:10:05,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:10:05,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05" (1/1) ... [2022-11-16 12:10:05,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05" (1/1) ... [2022-11-16 12:10:05,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05" (1/1) ... [2022-11-16 12:10:05,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05" (1/1) ... [2022-11-16 12:10:05,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05" (1/1) ... [2022-11-16 12:10:05,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05" (1/1) ... [2022-11-16 12:10:05,825 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05" (1/1) ... [2022-11-16 12:10:05,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05" (1/1) ... [2022-11-16 12:10:05,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:10:05,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:10:05,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:10:05,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:10:05,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05" (1/1) ... [2022-11-16 12:10:05,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:10:05,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:05,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:10:05,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:10:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 12:10:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 12:10:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:10:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:10:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:10:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:10:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:10:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:10:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:10:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:10:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:10:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:10:05,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:10:05,945 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:10:06,182 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:10:06,185 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:10:06,756 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:10:06,768 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:10:06,768 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:10:06,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:10:06 BoogieIcfgContainer [2022-11-16 12:10:06,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:10:06,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:10:06,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:10:06,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:10:06,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:10:04" (1/3) ... [2022-11-16 12:10:06,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cc086f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:10:06, skipping insertion in model container [2022-11-16 12:10:06,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:05" (2/3) ... [2022-11-16 12:10:06,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cc086f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:10:06, skipping insertion in model container [2022-11-16 12:10:06,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:10:06" (3/3) ... [2022-11-16 12:10:06,785 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2022-11-16 12:10:06,796 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:10:06,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:10:06,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-16 12:10:06,811 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:10:06,926 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:10:06,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 259 transitions, 528 flow [2022-11-16 12:10:07,083 INFO L130 PetriNetUnfolder]: 17/257 cut-off events. [2022-11-16 12:10:07,083 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:10:07,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 257 events. 17/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 580 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 198. Up to 2 conditions per place. [2022-11-16 12:10:07,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 259 transitions, 528 flow [2022-11-16 12:10:07,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 257 transitions, 520 flow [2022-11-16 12:10:07,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:10:07,132 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;@6273976, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:10:07,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-16 12:10:07,152 INFO L130 PetriNetUnfolder]: 2/55 cut-off events. [2022-11-16 12:10:07,155 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:10:07,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:07,157 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:07,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:07,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:07,165 INFO L85 PathProgramCache]: Analyzing trace with hash -784437459, now seen corresponding path program 1 times [2022-11-16 12:10:07,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:07,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165547800] [2022-11-16 12:10:07,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:07,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:07,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:07,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416417139] [2022-11-16 12:10:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:07,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:07,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:07,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:07,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:10:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:07,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:10:07,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:07,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:07,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:07,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165547800] [2022-11-16 12:10:07,694 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:07,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416417139] [2022-11-16 12:10:07,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416417139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:07,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:07,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:10:07,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699227385] [2022-11-16 12:10:07,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:07,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:10:07,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:07,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:10:07,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:10:07,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 259 [2022-11-16 12:10:07,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 257 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:07,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 259 [2022-11-16 12:10:07,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:07,992 INFO L130 PetriNetUnfolder]: 8/307 cut-off events. [2022-11-16 12:10:07,992 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:10:07,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 307 events. 8/307 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 792 event pairs, 0 based on Foata normal form. 10/287 useless extension candidates. Maximal degree in co-relation 275. Up to 17 conditions per place. [2022-11-16 12:10:07,997 INFO L137 encePairwiseOnDemand]: 244/259 looper letters, 23 selfloop transitions, 2 changer transitions 2/256 dead transitions. [2022-11-16 12:10:07,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 256 transitions, 568 flow [2022-11-16 12:10:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:10:08,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:10:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 739 transitions. [2022-11-16 12:10:08,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9510939510939511 [2022-11-16 12:10:08,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 739 transitions. [2022-11-16 12:10:08,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 739 transitions. [2022-11-16 12:10:08,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:08,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 739 transitions. [2022-11-16 12:10:08,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.33333333333334) internal successors, (739), 3 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,044 INFO L175 Difference]: Start difference. First operand has 247 places, 257 transitions, 520 flow. Second operand 3 states and 739 transitions. [2022-11-16 12:10:08,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 256 transitions, 568 flow [2022-11-16 12:10:08,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 256 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:10:08,060 INFO L231 Difference]: Finished difference. Result has 248 places, 246 transitions, 510 flow [2022-11-16 12:10:08,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=248, PETRI_TRANSITIONS=246} [2022-11-16 12:10:08,070 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 1 predicate places. [2022-11-16 12:10:08,071 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 246 transitions, 510 flow [2022-11-16 12:10:08,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:08,076 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:08,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:08,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 12:10:08,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:08,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:08,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1452242165, now seen corresponding path program 1 times [2022-11-16 12:10:08,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:08,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091411649] [2022-11-16 12:10:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:08,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:08,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:08,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091411649] [2022-11-16 12:10:08,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091411649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:08,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:08,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:08,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390598085] [2022-11-16 12:10:08,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:08,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:10:08,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:08,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:10:08,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:10:08,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 259 [2022-11-16 12:10:08,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 246 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:08,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 259 [2022-11-16 12:10:08,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:08,624 INFO L130 PetriNetUnfolder]: 8/389 cut-off events. [2022-11-16 12:10:08,625 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:10:08,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 389 events. 8/389 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 867 event pairs, 0 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 294. Up to 22 conditions per place. [2022-11-16 12:10:08,629 INFO L137 encePairwiseOnDemand]: 254/259 looper letters, 17 selfloop transitions, 2 changer transitions 0/252 dead transitions. [2022-11-16 12:10:08,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 252 transitions, 560 flow [2022-11-16 12:10:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:10:08,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:10:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 730 transitions. [2022-11-16 12:10:08,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9395109395109396 [2022-11-16 12:10:08,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 730 transitions. [2022-11-16 12:10:08,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 730 transitions. [2022-11-16 12:10:08,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:08,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 730 transitions. [2022-11-16 12:10:08,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,641 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,641 INFO L175 Difference]: Start difference. First operand has 248 places, 246 transitions, 510 flow. Second operand 3 states and 730 transitions. [2022-11-16 12:10:08,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 252 transitions, 560 flow [2022-11-16 12:10:08,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:10:08,653 INFO L231 Difference]: Finished difference. Result has 248 places, 247 transitions, 524 flow [2022-11-16 12:10:08,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=248, PETRI_TRANSITIONS=247} [2022-11-16 12:10:08,655 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 1 predicate places. [2022-11-16 12:10:08,655 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 247 transitions, 524 flow [2022-11-16 12:10:08,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:08,657 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:08,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:10:08,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:08,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1781092602, now seen corresponding path program 1 times [2022-11-16 12:10:08,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:08,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891230507] [2022-11-16 12:10:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:08,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:08,768 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:08,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261812573] [2022-11-16 12:10:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:08,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:08,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:08,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:08,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:10:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:08,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:10:08,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:09,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:09,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:09,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891230507] [2022-11-16 12:10:09,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:09,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261812573] [2022-11-16 12:10:09,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261812573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:09,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:09,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:09,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663448910] [2022-11-16 12:10:09,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:09,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:10:09,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:09,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:10:09,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:10:09,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-16 12:10:09,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 247 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:09,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-16 12:10:09,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:09,281 INFO L130 PetriNetUnfolder]: 8/389 cut-off events. [2022-11-16 12:10:09,281 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-16 12:10:09,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 389 events. 8/389 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 864 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 247. Up to 30 conditions per place. [2022-11-16 12:10:09,286 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 23 selfloop transitions, 5 changer transitions 0/256 dead transitions. [2022-11-16 12:10:09,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 256 transitions, 598 flow [2022-11-16 12:10:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:10:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:10:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1184 transitions. [2022-11-16 12:10:09,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9142857142857143 [2022-11-16 12:10:09,291 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1184 transitions. [2022-11-16 12:10:09,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1184 transitions. [2022-11-16 12:10:09,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:09,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1184 transitions. [2022-11-16 12:10:09,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.8) internal successors, (1184), 5 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,302 INFO L175 Difference]: Start difference. First operand has 248 places, 247 transitions, 524 flow. Second operand 5 states and 1184 transitions. [2022-11-16 12:10:09,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 256 transitions, 598 flow [2022-11-16 12:10:09,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 256 transitions, 596 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:10:09,310 INFO L231 Difference]: Finished difference. Result has 255 places, 250 transitions, 556 flow [2022-11-16 12:10:09,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=255, PETRI_TRANSITIONS=250} [2022-11-16 12:10:09,313 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 8 predicate places. [2022-11-16 12:10:09,314 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 250 transitions, 556 flow [2022-11-16 12:10:09,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:09,315 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:09,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:09,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:09,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:09,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash 620704563, now seen corresponding path program 1 times [2022-11-16 12:10:09,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:09,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023733740] [2022-11-16 12:10:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:09,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:09,575 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:09,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645234427] [2022-11-16 12:10:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:09,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:09,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:09,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:09,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:10:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:09,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:10:09,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:09,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:09,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:09,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023733740] [2022-11-16 12:10:09,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:09,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645234427] [2022-11-16 12:10:09,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645234427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:09,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:09,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:09,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050201648] [2022-11-16 12:10:09,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:09,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:10:09,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:09,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:10:09,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:10:09,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-16 12:10:09,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 250 transitions, 556 flow. Second operand has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:09,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-16 12:10:09,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:10,000 INFO L130 PetriNetUnfolder]: 8/385 cut-off events. [2022-11-16 12:10:10,001 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 12:10:10,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 385 events. 8/385 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 856 event pairs, 0 based on Foata normal form. 4/370 useless extension candidates. Maximal degree in co-relation 296. Up to 28 conditions per place. [2022-11-16 12:10:10,004 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 16 selfloop transitions, 5 changer transitions 0/249 dead transitions. [2022-11-16 12:10:10,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 249 transitions, 596 flow [2022-11-16 12:10:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:10:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:10:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 943 transitions. [2022-11-16 12:10:10,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9102316602316602 [2022-11-16 12:10:10,008 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 943 transitions. [2022-11-16 12:10:10,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 943 transitions. [2022-11-16 12:10:10,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:10,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 943 transitions. [2022-11-16 12:10:10,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.75) internal successors, (943), 4 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,017 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,017 INFO L175 Difference]: Start difference. First operand has 255 places, 250 transitions, 556 flow. Second operand 4 states and 943 transitions. [2022-11-16 12:10:10,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 249 transitions, 596 flow [2022-11-16 12:10:10,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 249 transitions, 587 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:10:10,026 INFO L231 Difference]: Finished difference. Result has 255 places, 249 transitions, 558 flow [2022-11-16 12:10:10,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=255, PETRI_TRANSITIONS=249} [2022-11-16 12:10:10,027 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 8 predicate places. [2022-11-16 12:10:10,028 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 249 transitions, 558 flow [2022-11-16 12:10:10,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:10,029 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:10,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:10,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:10,236 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:10,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:10,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1850046175, now seen corresponding path program 1 times [2022-11-16 12:10:10,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:10,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620114194] [2022-11-16 12:10:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:10,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:10,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:10,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119149790] [2022-11-16 12:10:10,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:10,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:10,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:10,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:10,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:10:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:10,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:10:10,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:10,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:10,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:10,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620114194] [2022-11-16 12:10:10,738 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:10,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119149790] [2022-11-16 12:10:10,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119149790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:10,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:10:10,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:10:10,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924177105] [2022-11-16 12:10:10,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:10,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:10:10,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:10,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:10:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:10:10,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-16 12:10:10,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 249 transitions, 558 flow. Second operand has 8 states, 8 states have (on average 233.875) internal successors, (1871), 8 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:10,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-16 12:10:10,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:11,010 INFO L130 PetriNetUnfolder]: 8/471 cut-off events. [2022-11-16 12:10:11,010 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-16 12:10:11,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 471 events. 8/471 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 604 event pairs, 0 based on Foata normal form. 6/458 useless extension candidates. Maximal degree in co-relation 363. Up to 22 conditions per place. [2022-11-16 12:10:11,013 INFO L137 encePairwiseOnDemand]: 252/259 looper letters, 29 selfloop transitions, 10 changer transitions 0/267 dead transitions. [2022-11-16 12:10:11,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 267 transitions, 690 flow [2022-11-16 12:10:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:10:11,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:10:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2120 transitions. [2022-11-16 12:10:11,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9094809094809094 [2022-11-16 12:10:11,019 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2120 transitions. [2022-11-16 12:10:11,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2120 transitions. [2022-11-16 12:10:11,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:11,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2120 transitions. [2022-11-16 12:10:11,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.55555555555554) internal successors, (2120), 9 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:11,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:11,034 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:11,034 INFO L175 Difference]: Start difference. First operand has 255 places, 249 transitions, 558 flow. Second operand 9 states and 2120 transitions. [2022-11-16 12:10:11,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 267 transitions, 690 flow [2022-11-16 12:10:11,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 267 transitions, 677 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:10:11,042 INFO L231 Difference]: Finished difference. Result has 266 places, 253 transitions, 608 flow [2022-11-16 12:10:11,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=608, PETRI_PLACES=266, PETRI_TRANSITIONS=253} [2022-11-16 12:10:11,044 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 19 predicate places. [2022-11-16 12:10:11,044 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 253 transitions, 608 flow [2022-11-16 12:10:11,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 233.875) internal successors, (1871), 8 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:11,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:11,046 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:11,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:11,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:11,252 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:11,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:11,253 INFO L85 PathProgramCache]: Analyzing trace with hash 505126278, now seen corresponding path program 1 times [2022-11-16 12:10:11,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:11,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579767381] [2022-11-16 12:10:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:11,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:11,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:11,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233393988] [2022-11-16 12:10:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:11,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:11,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:11,353 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:11,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:10:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:11,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:10:11,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:11,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:12,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:12,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579767381] [2022-11-16 12:10:12,315 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:12,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233393988] [2022-11-16 12:10:12,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233393988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:12,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:10:12,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:10:12,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92814033] [2022-11-16 12:10:12,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:12,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:10:12,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:12,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:10:12,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:10:12,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-16 12:10:12,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 253 transitions, 608 flow. Second operand has 14 states, 14 states have (on average 234.64285714285714) internal successors, (3285), 14 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:12,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-16 12:10:12,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:12,772 INFO L130 PetriNetUnfolder]: 15/741 cut-off events. [2022-11-16 12:10:12,772 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-16 12:10:12,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 741 events. 15/741 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1731 event pairs, 0 based on Foata normal form. 4/707 useless extension candidates. Maximal degree in co-relation 631. Up to 19 conditions per place. [2022-11-16 12:10:12,777 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 37 selfloop transitions, 16 changer transitions 0/281 dead transitions. [2022-11-16 12:10:12,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 281 transitions, 822 flow [2022-11-16 12:10:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:10:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:10:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3520 transitions. [2022-11-16 12:10:12,786 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9060489060489061 [2022-11-16 12:10:12,787 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3520 transitions. [2022-11-16 12:10:12,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3520 transitions. [2022-11-16 12:10:12,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:12,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3520 transitions. [2022-11-16 12:10:12,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 234.66666666666666) internal successors, (3520), 15 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,847 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,847 INFO L175 Difference]: Start difference. First operand has 266 places, 253 transitions, 608 flow. Second operand 15 states and 3520 transitions. [2022-11-16 12:10:12,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 281 transitions, 822 flow [2022-11-16 12:10:12,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 281 transitions, 804 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 12:10:12,860 INFO L231 Difference]: Finished difference. Result has 275 places, 257 transitions, 657 flow [2022-11-16 12:10:12,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=657, PETRI_PLACES=275, PETRI_TRANSITIONS=257} [2022-11-16 12:10:12,863 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 28 predicate places. [2022-11-16 12:10:12,863 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 257 transitions, 657 flow [2022-11-16 12:10:12,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 234.64285714285714) internal successors, (3285), 14 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:12,866 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:12,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:13,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:10:13,073 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:13,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1429378977, now seen corresponding path program 2 times [2022-11-16 12:10:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:13,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122833373] [2022-11-16 12:10:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:13,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:13,146 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:13,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085268188] [2022-11-16 12:10:13,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:10:13,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:13,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:13,151 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:13,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:10:13,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:10:13,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:13,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:10:13,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-16 12:10:13,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:13,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:13,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122833373] [2022-11-16 12:10:13,633 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:13,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085268188] [2022-11-16 12:10:13,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085268188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:13,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:13,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:13,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253916730] [2022-11-16 12:10:13,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:13,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:10:13,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:13,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:10:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:10:13,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-16 12:10:13,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 257 transitions, 657 flow. Second operand has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:13,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-16 12:10:13,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:13,872 INFO L130 PetriNetUnfolder]: 15/741 cut-off events. [2022-11-16 12:10:13,873 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-16 12:10:13,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 741 events. 15/741 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1730 event pairs, 0 based on Foata normal form. 0/705 useless extension candidates. Maximal degree in co-relation 628. Up to 50 conditions per place. [2022-11-16 12:10:13,877 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 29 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-16 12:10:13,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 269 transitions, 749 flow [2022-11-16 12:10:13,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:10:13,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:10:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1175 transitions. [2022-11-16 12:10:13,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9073359073359073 [2022-11-16 12:10:13,882 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1175 transitions. [2022-11-16 12:10:13,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1175 transitions. [2022-11-16 12:10:13,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:13,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1175 transitions. [2022-11-16 12:10:13,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,890 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,890 INFO L175 Difference]: Start difference. First operand has 275 places, 257 transitions, 657 flow. Second operand 5 states and 1175 transitions. [2022-11-16 12:10:13,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 269 transitions, 749 flow [2022-11-16 12:10:13,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 269 transitions, 690 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-16 12:10:13,899 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 632 flow [2022-11-16 12:10:13,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=632, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2022-11-16 12:10:13,900 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 23 predicate places. [2022-11-16 12:10:13,900 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 632 flow [2022-11-16 12:10:13,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:13,902 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:13,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:14,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:14,110 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:14,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:14,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1361075661, now seen corresponding path program 1 times [2022-11-16 12:10:14,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:14,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777364631] [2022-11-16 12:10:14,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:14,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:14,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:14,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473008405] [2022-11-16 12:10:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:14,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:14,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:14,171 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:14,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:10:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:14,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:10:14,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:14,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:15,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:15,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777364631] [2022-11-16 12:10:15,016 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:15,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473008405] [2022-11-16 12:10:15,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473008405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:15,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:10:15,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:10:15,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140405171] [2022-11-16 12:10:15,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:15,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:10:15,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:15,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:10:15,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:10:15,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-16 12:10:15,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 260 transitions, 632 flow. Second operand has 16 states, 16 states have (on average 234.6875) internal successors, (3755), 16 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:15,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-16 12:10:15,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:15,560 INFO L130 PetriNetUnfolder]: 8/805 cut-off events. [2022-11-16 12:10:15,560 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-16 12:10:15,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 805 events. 8/805 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 627 event pairs, 0 based on Foata normal form. 8/798 useless extension candidates. Maximal degree in co-relation 650. Up to 20 conditions per place. [2022-11-16 12:10:15,564 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 60 selfloop transitions, 22 changer transitions 0/313 dead transitions. [2022-11-16 12:10:15,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 313 transitions, 989 flow [2022-11-16 12:10:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:10:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:10:15,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4936 transitions. [2022-11-16 12:10:15,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9075197646626219 [2022-11-16 12:10:15,580 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4936 transitions. [2022-11-16 12:10:15,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4936 transitions. [2022-11-16 12:10:15,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:15,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4936 transitions. [2022-11-16 12:10:15,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 235.04761904761904) internal successors, (4936), 21 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,624 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,624 INFO L175 Difference]: Start difference. First operand has 270 places, 260 transitions, 632 flow. Second operand 21 states and 4936 transitions. [2022-11-16 12:10:15,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 313 transitions, 989 flow [2022-11-16 12:10:15,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 313 transitions, 979 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-16 12:10:15,633 INFO L231 Difference]: Finished difference. Result has 294 places, 269 transitions, 742 flow [2022-11-16 12:10:15,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=742, PETRI_PLACES=294, PETRI_TRANSITIONS=269} [2022-11-16 12:10:15,634 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 47 predicate places. [2022-11-16 12:10:15,635 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 269 transitions, 742 flow [2022-11-16 12:10:15,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 234.6875) internal successors, (3755), 16 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:15,637 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:15,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:15,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:15,844 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:15,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash -984629043, now seen corresponding path program 2 times [2022-11-16 12:10:15,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:15,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957909775] [2022-11-16 12:10:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:15,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:15,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:15,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691510295] [2022-11-16 12:10:15,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:10:15,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:15,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:15,929 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:15,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:10:16,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:10:16,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:16,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:10:16,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-16 12:10:16,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:16,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:16,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957909775] [2022-11-16 12:10:16,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:16,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691510295] [2022-11-16 12:10:16,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691510295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:16,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:16,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:16,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995120728] [2022-11-16 12:10:16,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:16,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:10:16,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:16,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:10:16,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:10:16,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-16 12:10:16,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 269 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:16,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-16 12:10:16,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:16,983 INFO L130 PetriNetUnfolder]: 8/803 cut-off events. [2022-11-16 12:10:16,983 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-11-16 12:10:16,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 803 events. 8/803 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 622 event pairs, 0 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 651. Up to 80 conditions per place. [2022-11-16 12:10:16,988 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 18 selfloop transitions, 5 changer transitions 0/267 dead transitions. [2022-11-16 12:10:16,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 267 transitions, 778 flow [2022-11-16 12:10:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:10:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:10:16,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 933 transitions. [2022-11-16 12:10:16,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9005791505791506 [2022-11-16 12:10:16,991 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 933 transitions. [2022-11-16 12:10:16,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 933 transitions. [2022-11-16 12:10:16,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:16,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 933 transitions. [2022-11-16 12:10:16,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,997 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,997 INFO L175 Difference]: Start difference. First operand has 294 places, 269 transitions, 742 flow. Second operand 4 states and 933 transitions. [2022-11-16 12:10:16,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 267 transitions, 778 flow [2022-11-16 12:10:17,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 267 transitions, 755 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-16 12:10:17,008 INFO L231 Difference]: Finished difference. Result has 285 places, 267 transitions, 719 flow [2022-11-16 12:10:17,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=719, PETRI_PLACES=285, PETRI_TRANSITIONS=267} [2022-11-16 12:10:17,010 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 38 predicate places. [2022-11-16 12:10:17,010 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 267 transitions, 719 flow [2022-11-16 12:10:17,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:17,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:17,011 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:17,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 12:10:17,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 12:10:17,218 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:17,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:17,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1280389661, now seen corresponding path program 1 times [2022-11-16 12:10:17,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:17,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647068771] [2022-11-16 12:10:17,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:17,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:17,307 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:17,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048017722] [2022-11-16 12:10:17,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:17,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:17,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:17,309 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:17,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:10:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:17,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:10:17,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:18,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:19,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:19,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647068771] [2022-11-16 12:10:19,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:19,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048017722] [2022-11-16 12:10:19,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048017722] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:19,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:10:19,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-16 12:10:19,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414278889] [2022-11-16 12:10:19,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:19,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:10:19,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:19,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:10:19,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:10:19,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-16 12:10:19,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 267 transitions, 719 flow. Second operand has 32 states, 32 states have (on average 235.4375) internal successors, (7534), 32 states have internal predecessors, (7534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:19,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:19,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-16 12:10:19,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:20,896 INFO L130 PetriNetUnfolder]: 8/1475 cut-off events. [2022-11-16 12:10:20,896 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-11-16 12:10:20,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 1475 events. 8/1475 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 662 event pairs, 0 based on Foata normal form. 16/1476 useless extension candidates. Maximal degree in co-relation 1240. Up to 38 conditions per place. [2022-11-16 12:10:20,901 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 124 selfloop transitions, 46 changer transitions 0/399 dead transitions. [2022-11-16 12:10:20,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 399 transitions, 1655 flow [2022-11-16 12:10:20,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 12:10:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 12:10:20,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10572 transitions. [2022-11-16 12:10:20,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070785070785071 [2022-11-16 12:10:20,922 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10572 transitions. [2022-11-16 12:10:20,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10572 transitions. [2022-11-16 12:10:20,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:20,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10572 transitions. [2022-11-16 12:10:20,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 234.93333333333334) internal successors, (10572), 45 states have internal predecessors, (10572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:20,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 259.0) internal successors, (11914), 46 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:20,976 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 259.0) internal successors, (11914), 46 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:20,976 INFO L175 Difference]: Start difference. First operand has 285 places, 267 transitions, 719 flow. Second operand 45 states and 10572 transitions. [2022-11-16 12:10:20,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 399 transitions, 1655 flow [2022-11-16 12:10:20,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 399 transitions, 1645 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:10:20,988 INFO L231 Difference]: Finished difference. Result has 335 places, 292 transitions, 1032 flow [2022-11-16 12:10:20,990 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1032, PETRI_PLACES=335, PETRI_TRANSITIONS=292} [2022-11-16 12:10:20,991 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 88 predicate places. [2022-11-16 12:10:20,991 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 292 transitions, 1032 flow [2022-11-16 12:10:20,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 235.4375) internal successors, (7534), 32 states have internal predecessors, (7534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:20,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:20,995 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:21,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:21,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:10:21,205 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:21,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:21,206 INFO L85 PathProgramCache]: Analyzing trace with hash -808702947, now seen corresponding path program 2 times [2022-11-16 12:10:21,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:21,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742047235] [2022-11-16 12:10:21,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:21,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:21,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:21,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414494836] [2022-11-16 12:10:21,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:10:21,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:21,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:21,354 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:21,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:10:22,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:10:22,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:22,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 2826 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 12:10:22,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:24,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:26,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:26,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742047235] [2022-11-16 12:10:26,141 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:26,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414494836] [2022-11-16 12:10:26,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414494836] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:26,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:10:26,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-16 12:10:26,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787154930] [2022-11-16 12:10:26,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:26,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-16 12:10:26,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:26,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-16 12:10:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 12:10:26,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-16 12:10:26,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 292 transitions, 1032 flow. Second operand has 61 states, 61 states have (on average 235.54098360655738) internal successors, (14368), 61 states have internal predecessors, (14368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:26,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:26,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-16 12:10:26,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:30,878 INFO L130 PetriNetUnfolder]: 8/2735 cut-off events. [2022-11-16 12:10:30,879 INFO L131 PetriNetUnfolder]: For 4813/4813 co-relation queries the response was YES. [2022-11-16 12:10:30,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4575 conditions, 2735 events. 8/2735 cut-off events. For 4813/4813 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 736 event pairs, 0 based on Foata normal form. 30/2750 useless extension candidates. Maximal degree in co-relation 2465. Up to 98 conditions per place. [2022-11-16 12:10:30,889 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 244 selfloop transitions, 91 changer transitions 0/564 dead transitions. [2022-11-16 12:10:30,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 564 transitions, 3144 flow [2022-11-16 12:10:30,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-16 12:10:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-16 12:10:30,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 21139 transitions. [2022-11-16 12:10:30,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9068640068640068 [2022-11-16 12:10:30,917 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 21139 transitions. [2022-11-16 12:10:30,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 21139 transitions. [2022-11-16 12:10:30,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:30,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 21139 transitions. [2022-11-16 12:10:30,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 234.87777777777777) internal successors, (21139), 90 states have internal predecessors, (21139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:30,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 259.0) internal successors, (23569), 91 states have internal predecessors, (23569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:31,009 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 259.0) internal successors, (23569), 91 states have internal predecessors, (23569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:31,009 INFO L175 Difference]: Start difference. First operand has 335 places, 292 transitions, 1032 flow. Second operand 90 states and 21139 transitions. [2022-11-16 12:10:31,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 564 transitions, 3144 flow [2022-11-16 12:10:31,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 564 transitions, 3057 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-11-16 12:10:31,036 INFO L231 Difference]: Finished difference. Result has 422 places, 338 transitions, 1664 flow [2022-11-16 12:10:31,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1664, PETRI_PLACES=422, PETRI_TRANSITIONS=338} [2022-11-16 12:10:31,038 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 175 predicate places. [2022-11-16 12:10:31,038 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 338 transitions, 1664 flow [2022-11-16 12:10:31,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 235.54098360655738) internal successors, (14368), 61 states have internal predecessors, (14368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:31,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:31,043 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:31,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:31,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:10:31,255 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash -262578959, now seen corresponding path program 3 times [2022-11-16 12:10:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:31,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913067595] [2022-11-16 12:10:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:31,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:31,523 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:31,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522883621] [2022-11-16 12:10:31,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:10:31,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:31,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:31,525 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:31,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:10:32,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:10:32,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:32,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:10:32,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-16 12:10:32,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-16 12:10:33,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:33,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913067595] [2022-11-16 12:10:33,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:33,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522883621] [2022-11-16 12:10:33,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522883621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:33,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:10:33,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-16 12:10:33,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312040008] [2022-11-16 12:10:33,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:33,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:10:33,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:33,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:10:33,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:10:33,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 259 [2022-11-16 12:10:33,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 338 transitions, 1664 flow. Second operand has 10 states, 10 states have (on average 228.1) internal successors, (2281), 10 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:33,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:33,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 259 [2022-11-16 12:10:33,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:35,256 INFO L130 PetriNetUnfolder]: 8/2706 cut-off events. [2022-11-16 12:10:35,256 INFO L131 PetriNetUnfolder]: For 3181/3181 co-relation queries the response was YES. [2022-11-16 12:10:35,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4739 conditions, 2706 events. 8/2706 cut-off events. For 3181/3181 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 648 event pairs, 0 based on Foata normal form. 29/2720 useless extension candidates. Maximal degree in co-relation 2481. Up to 310 conditions per place. [2022-11-16 12:10:35,268 INFO L137 encePairwiseOnDemand]: 250/259 looper letters, 39 selfloop transitions, 103 changer transitions 0/361 dead transitions. [2022-11-16 12:10:35,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 361 transitions, 2004 flow [2022-11-16 12:10:35,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:10:35,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:10:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2954 transitions. [2022-11-16 12:10:35,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773388773388774 [2022-11-16 12:10:35,275 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2954 transitions. [2022-11-16 12:10:35,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2954 transitions. [2022-11-16 12:10:35,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:35,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2954 transitions. [2022-11-16 12:10:35,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 227.23076923076923) internal successors, (2954), 13 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:35,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 259.0) internal successors, (3626), 14 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:35,289 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 259.0) internal successors, (3626), 14 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:35,289 INFO L175 Difference]: Start difference. First operand has 422 places, 338 transitions, 1664 flow. Second operand 13 states and 2954 transitions. [2022-11-16 12:10:35,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 361 transitions, 2004 flow [2022-11-16 12:10:35,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 361 transitions, 1883 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-16 12:10:35,324 INFO L231 Difference]: Finished difference. Result has 393 places, 340 transitions, 1800 flow [2022-11-16 12:10:35,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1800, PETRI_PLACES=393, PETRI_TRANSITIONS=340} [2022-11-16 12:10:35,325 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 146 predicate places. [2022-11-16 12:10:35,326 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 340 transitions, 1800 flow [2022-11-16 12:10:35,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 228.1) internal successors, (2281), 10 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:35,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:35,327 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:35,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 12:10:35,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:35,535 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:35,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:35,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1034934093, now seen corresponding path program 1 times [2022-11-16 12:10:35,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:35,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087998388] [2022-11-16 12:10:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:35,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:35,780 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:35,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318538511] [2022-11-16 12:10:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:35,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:35,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:35,786 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:35,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:10:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:37,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:10:37,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 12:10:39,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 12:10:42,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:42,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087998388] [2022-11-16 12:10:42,500 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:42,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318538511] [2022-11-16 12:10:42,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318538511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:42,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:10:42,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:10:42,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904215381] [2022-11-16 12:10:42,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:42,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:10:42,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:10:42,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:10:42,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-16 12:10:42,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 340 transitions, 1800 flow. Second operand has 8 states, 8 states have (on average 231.75) internal successors, (1854), 8 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:42,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:42,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-16 12:10:42,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:45,280 INFO L130 PetriNetUnfolder]: 9/3983 cut-off events. [2022-11-16 12:10:45,280 INFO L131 PetriNetUnfolder]: For 5415/5415 co-relation queries the response was YES. [2022-11-16 12:10:45,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6803 conditions, 3983 events. 9/3983 cut-off events. For 5415/5415 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 406 event pairs, 0 based on Foata normal form. 3/3971 useless extension candidates. Maximal degree in co-relation 4626. Up to 158 conditions per place. [2022-11-16 12:10:45,295 INFO L137 encePairwiseOnDemand]: 252/259 looper letters, 36 selfloop transitions, 9 changer transitions 0/362 dead transitions. [2022-11-16 12:10:45,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 362 transitions, 1954 flow [2022-11-16 12:10:45,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:10:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:10:45,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2100 transitions. [2022-11-16 12:10:45,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9009009009009009 [2022-11-16 12:10:45,300 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2100 transitions. [2022-11-16 12:10:45,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2100 transitions. [2022-11-16 12:10:45,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:45,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2100 transitions. [2022-11-16 12:10:45,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 233.33333333333334) internal successors, (2100), 9 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:45,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:45,311 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:45,311 INFO L175 Difference]: Start difference. First operand has 393 places, 340 transitions, 1800 flow. Second operand 9 states and 2100 transitions. [2022-11-16 12:10:45,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 362 transitions, 1954 flow [2022-11-16 12:10:45,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 362 transitions, 1883 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:10:45,353 INFO L231 Difference]: Finished difference. Result has 400 places, 344 transitions, 1792 flow [2022-11-16 12:10:45,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1792, PETRI_PLACES=400, PETRI_TRANSITIONS=344} [2022-11-16 12:10:45,355 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 153 predicate places. [2022-11-16 12:10:45,355 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 344 transitions, 1792 flow [2022-11-16 12:10:45,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 231.75) internal successors, (1854), 8 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:45,356 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:45,356 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:45,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-16 12:10:45,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:10:45,570 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:10:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash 449987226, now seen corresponding path program 1 times [2022-11-16 12:10:45,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:45,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535307283] [2022-11-16 12:10:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:45,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:45,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:45,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070082650] [2022-11-16 12:10:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:45,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:45,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:45,919 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:45,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:10:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:56,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 5332 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:10:56,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:59,176 INFO L134 CoverageAnalysis]: Checked inductivity of 19200 backedges. 1335 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 12:10:59,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:59,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:59,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535307283] [2022-11-16 12:10:59,177 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:59,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070082650] [2022-11-16 12:10:59,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070082650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:59,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:59,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:10:59,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224974224] [2022-11-16 12:10:59,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:59,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:10:59,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:59,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:10:59,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:10:59,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 259 [2022-11-16 12:10:59,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 344 transitions, 1792 flow. Second operand has 9 states, 9 states have (on average 222.33333333333334) internal successors, (2001), 9 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:59,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:59,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 259 [2022-11-16 12:10:59,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:02,998 INFO L130 PetriNetUnfolder]: 9/3925 cut-off events. [2022-11-16 12:11:02,998 INFO L131 PetriNetUnfolder]: For 5807/5807 co-relation queries the response was YES. [2022-11-16 12:11:03,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7045 conditions, 3925 events. 9/3925 cut-off events. For 5807/5807 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 291 event pairs, 0 based on Foata normal form. 58/3968 useless extension candidates. Maximal degree in co-relation 4709. Up to 354 conditions per place. [2022-11-16 12:11:03,020 INFO L137 encePairwiseOnDemand]: 249/259 looper letters, 169 selfloop transitions, 74 changer transitions 0/457 dead transitions. [2022-11-16 12:11:03,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 457 transitions, 3476 flow [2022-11-16 12:11:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:11:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:11:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2671 transitions. [2022-11-16 12:11:03,026 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8593951093951094 [2022-11-16 12:11:03,026 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2671 transitions. [2022-11-16 12:11:03,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2671 transitions. [2022-11-16 12:11:03,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:03,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2671 transitions. [2022-11-16 12:11:03,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 222.58333333333334) internal successors, (2671), 12 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:03,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 259.0) internal successors, (3367), 13 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:03,039 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 259.0) internal successors, (3367), 13 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:03,040 INFO L175 Difference]: Start difference. First operand has 400 places, 344 transitions, 1792 flow. Second operand 12 states and 2671 transitions. [2022-11-16 12:11:03,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 457 transitions, 3476 flow [2022-11-16 12:11:03,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 457 transitions, 3462 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-16 12:11:03,084 INFO L231 Difference]: Finished difference. Result has 410 places, 403 transitions, 2755 flow [2022-11-16 12:11:03,085 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2755, PETRI_PLACES=410, PETRI_TRANSITIONS=403} [2022-11-16 12:11:03,085 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 163 predicate places. [2022-11-16 12:11:03,085 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 403 transitions, 2755 flow [2022-11-16 12:11:03,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 222.33333333333334) internal successors, (2001), 9 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:03,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:03,087 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:03,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:03,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:11:03,314 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:11:03,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:03,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1664200277, now seen corresponding path program 1 times [2022-11-16 12:11:03,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:03,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260560042] [2022-11-16 12:11:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:03,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:03,967 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:11:03,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10865463] [2022-11-16 12:11:03,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:03,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:03,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:03,970 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:04,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:11:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:08,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 15236 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:11:08,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 164517 backedges. 0 proven. 110922 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-16 12:11:14,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 164517 backedges. 0 proven. 110922 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-16 12:11:22,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:22,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260560042] [2022-11-16 12:11:22,367 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:11:22,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10865463] [2022-11-16 12:11:22,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10865463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:11:22,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:11:22,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:11:22,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675228138] [2022-11-16 12:11:22,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:11:22,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:11:22,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:22,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:11:22,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:11:22,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-16 12:11:22,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 403 transitions, 2755 flow. Second operand has 14 states, 14 states have (on average 232.92857142857142) internal successors, (3261), 14 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:22,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:22,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-16 12:11:22,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:27,074 INFO L130 PetriNetUnfolder]: 15/5334 cut-off events. [2022-11-16 12:11:27,074 INFO L131 PetriNetUnfolder]: For 8853/8853 co-relation queries the response was YES. [2022-11-16 12:11:27,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9187 conditions, 5334 events. 15/5334 cut-off events. For 8853/8853 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 872 event pairs, 0 based on Foata normal form. 2/5306 useless extension candidates. Maximal degree in co-relation 6974. Up to 192 conditions per place. [2022-11-16 12:11:27,086 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 43 selfloop transitions, 14 changer transitions 0/434 dead transitions. [2022-11-16 12:11:27,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 434 transitions, 2976 flow [2022-11-16 12:11:27,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:11:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:11:27,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3479 transitions. [2022-11-16 12:11:27,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8954954954954955 [2022-11-16 12:11:27,091 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3479 transitions. [2022-11-16 12:11:27,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3479 transitions. [2022-11-16 12:11:27,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:27,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3479 transitions. [2022-11-16 12:11:27,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 231.93333333333334) internal successors, (3479), 15 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:27,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:27,104 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:27,104 INFO L175 Difference]: Start difference. First operand has 410 places, 403 transitions, 2755 flow. Second operand 15 states and 3479 transitions. [2022-11-16 12:11:27,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 434 transitions, 2976 flow [2022-11-16 12:11:27,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 434 transitions, 2937 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-16 12:11:27,152 INFO L231 Difference]: Finished difference. Result has 414 places, 406 transitions, 2784 flow [2022-11-16 12:11:27,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2784, PETRI_PLACES=414, PETRI_TRANSITIONS=406} [2022-11-16 12:11:27,154 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 167 predicate places. [2022-11-16 12:11:27,154 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 406 transitions, 2784 flow [2022-11-16 12:11:27,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 232.92857142857142) internal successors, (3261), 14 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:27,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:27,156 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:27,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:27,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:11:27,370 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:11:27,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:27,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2122701357, now seen corresponding path program 2 times [2022-11-16 12:11:27,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:27,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697574853] [2022-11-16 12:11:27,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:27,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:27,877 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:11:27,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345591948] [2022-11-16 12:11:27,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:11:27,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:27,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:27,886 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:27,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:11:32,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:11:32,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:11:32,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 15359 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:11:32,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-16 12:11:39,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-16 12:11:48,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:48,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697574853] [2022-11-16 12:11:48,225 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:11:48,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345591948] [2022-11-16 12:11:48,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345591948] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:11:48,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:11:48,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:11:48,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66910998] [2022-11-16 12:11:48,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:11:48,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:11:48,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:48,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:11:48,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:11:48,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-16 12:11:48,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 406 transitions, 2784 flow. Second operand has 16 states, 16 states have (on average 232.875) internal successors, (3726), 16 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:48,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:48,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-16 12:11:48,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:12:03,708 INFO L130 PetriNetUnfolder]: 13/8912 cut-off events. [2022-11-16 12:12:03,708 INFO L131 PetriNetUnfolder]: For 15656/15656 co-relation queries the response was YES. [2022-11-16 12:12:03,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15623 conditions, 8912 events. 13/8912 cut-off events. For 15656/15656 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 4/8901 useless extension candidates. Maximal degree in co-relation 13243. Up to 336 conditions per place. [2022-11-16 12:12:03,733 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 69 selfloop transitions, 21 changer transitions 0/467 dead transitions. [2022-11-16 12:12:03,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 467 transitions, 3196 flow [2022-11-16 12:12:03,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:12:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:12:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4882 transitions. [2022-11-16 12:12:03,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8975914690200405 [2022-11-16 12:12:03,741 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4882 transitions. [2022-11-16 12:12:03,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4882 transitions. [2022-11-16 12:12:03,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:12:03,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4882 transitions. [2022-11-16 12:12:03,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 232.47619047619048) internal successors, (4882), 21 states have internal predecessors, (4882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:03,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:03,756 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:03,757 INFO L175 Difference]: Start difference. First operand has 414 places, 406 transitions, 2784 flow. Second operand 21 states and 4882 transitions. [2022-11-16 12:12:03,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 467 transitions, 3196 flow [2022-11-16 12:12:03,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 467 transitions, 3112 flow, removed 15 selfloop flow, removed 12 redundant places. [2022-11-16 12:12:03,816 INFO L231 Difference]: Finished difference. Result has 427 places, 416 transitions, 2875 flow [2022-11-16 12:12:03,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2875, PETRI_PLACES=427, PETRI_TRANSITIONS=416} [2022-11-16 12:12:03,817 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 180 predicate places. [2022-11-16 12:12:03,818 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 416 transitions, 2875 flow [2022-11-16 12:12:03,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 232.875) internal successors, (3726), 16 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:03,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:12:03,821 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:12:03,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:04,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:12:04,035 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:12:04,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:04,036 INFO L85 PathProgramCache]: Analyzing trace with hash -984338451, now seen corresponding path program 3 times [2022-11-16 12:12:04,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:04,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376700620] [2022-11-16 12:12:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:04,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:05,229 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:05,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780291977] [2022-11-16 12:12:05,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:12:05,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:05,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:05,242 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:05,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f0420-a9e7-40f7-8299-9ef91b0f5943/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process