./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro --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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- 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-8393723 [2022-11-18 18:40:13,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:40:13,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:40:13,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:40:13,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:40:13,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:40:13,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:40:13,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:40:13,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:40:13,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:40:13,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:40:13,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:40:13,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:40:13,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:40:13,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:40:13,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:40:13,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:40:13,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:40:13,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:40:13,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:40:13,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:40:13,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:40:13,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:40:13,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:40:13,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:40:13,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:40:13,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:40:13,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:40:13,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:40:13,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:40:13,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:40:13,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:40:13,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:40:13,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:40:13,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:40:13,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:40:13,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:40:13,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:40:13,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:40:13,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:40:13,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:40:13,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:40:13,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:40:13,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:40:13,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:40:13,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:40:13,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:40:13,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:40:13,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:40:13,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:40:13,193 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:40:13,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:40:13,195 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:40:13,195 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:40:13,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:40:13,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:40:13,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:40:13,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:40:13,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:40:13,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:40:13,197 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:40:13,197 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:40:13,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:40:13,197 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:40:13,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:40:13,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:40:13,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:40:13,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:40:13,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:40:13,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:40:13,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:40:13,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:40:13,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:40:13,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:40:13,202 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:40:13,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:40:13,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:40:13,203 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_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2022-11-18 18:40:13,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:40:13,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:40:13,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:40:13,636 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:40:13,639 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:40:13,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-11-18 18:40:13,715 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/data/e3aadae8c/829ef064344449ac99508a9e635ac601/FLAGd093f25e0 [2022-11-18 18:40:14,286 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:40:14,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-11-18 18:40:14,302 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/data/e3aadae8c/829ef064344449ac99508a9e635ac601/FLAGd093f25e0 [2022-11-18 18:40:14,578 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/data/e3aadae8c/829ef064344449ac99508a9e635ac601 [2022-11-18 18:40:14,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:40:14,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:40:14,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:40:14,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:40:14,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:40:14,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:40:14" (1/1) ... [2022-11-18 18:40:14,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aab1bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:14, skipping insertion in model container [2022-11-18 18:40:14,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:40:14" (1/1) ... [2022-11-18 18:40:14,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:40:14,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:40:15,331 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-11-18 18:40:15,349 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:40:15,350 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:40:15,351 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:40:15,352 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:40:15,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:40:15,448 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:40:15,497 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-11-18 18:40:15,501 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:40:15,501 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:40:15,502 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:40:15,502 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:40:15,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:40:15,616 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:40:15,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15 WrapperNode [2022-11-18 18:40:15,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:40:15,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:40:15,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:40:15,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:40:15,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15" (1/1) ... [2022-11-18 18:40:15,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15" (1/1) ... [2022-11-18 18:40:15,714 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 328 [2022-11-18 18:40:15,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:40:15,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:40:15,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:40:15,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:40:15,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15" (1/1) ... [2022-11-18 18:40:15,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15" (1/1) ... [2022-11-18 18:40:15,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15" (1/1) ... [2022-11-18 18:40:15,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15" (1/1) ... [2022-11-18 18:40:15,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15" (1/1) ... [2022-11-18 18:40:15,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15" (1/1) ... [2022-11-18 18:40:15,794 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15" (1/1) ... [2022-11-18 18:40:15,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15" (1/1) ... [2022-11-18 18:40:15,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:40:15,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:40:15,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:40:15,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:40:15,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15" (1/1) ... [2022-11-18 18:40:15,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:40:15,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:15,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:40:15,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:40:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:40:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:40:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-18 18:40:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-18 18:40:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:40:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:40:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-18 18:40:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-18 18:40:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:40:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:40:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:40:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:40:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:40:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:40:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:40:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:40:15,913 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:40:16,201 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:40:16,204 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:40:16,930 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:40:16,942 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:40:16,942 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2022-11-18 18:40:16,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:40:16 BoogieIcfgContainer [2022-11-18 18:40:16,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:40:16,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:40:16,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:40:16,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:40:16,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:40:14" (1/3) ... [2022-11-18 18:40:16,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8cc818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:40:16, skipping insertion in model container [2022-11-18 18:40:16,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:15" (2/3) ... [2022-11-18 18:40:16,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8cc818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:40:16, skipping insertion in model container [2022-11-18 18:40:16,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:40:16" (3/3) ... [2022-11-18 18:40:16,955 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2022-11-18 18:40:16,964 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:40:16,975 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:40:16,975 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-18 18:40:16,976 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:40:17,142 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 18:40:17,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 372 transitions, 766 flow [2022-11-18 18:40:17,476 INFO L130 PetriNetUnfolder]: 77/603 cut-off events. [2022-11-18 18:40:17,476 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-11-18 18:40:17,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 603 events. 77/603 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3096 event pairs, 0 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2022-11-18 18:40:17,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 372 transitions, 766 flow [2022-11-18 18:40:17,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 372 transitions, 766 flow [2022-11-18 18:40:17,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:40:17,531 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;@3c21c380, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:40:17,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-18 18:40:17,545 INFO L130 PetriNetUnfolder]: 6/75 cut-off events. [2022-11-18 18:40:17,545 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:40:17,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:17,546 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] [2022-11-18 18:40:17,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:17,552 INFO L85 PathProgramCache]: Analyzing trace with hash 193129635, now seen corresponding path program 1 times [2022-11-18 18:40:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:17,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177111829] [2022-11-18 18:40:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:17,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:17,756 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:17,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399657329] [2022-11-18 18:40:17,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:17,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:17,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:17,765 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:17,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:40:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:17,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:40:17,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:18,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:40:18,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:18,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177111829] [2022-11-18 18:40:18,052 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:18,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399657329] [2022-11-18 18:40:18,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399657329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:18,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:18,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:40:18,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735847757] [2022-11-18 18:40:18,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:18,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:18,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:18,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:18,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:18,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 372 [2022-11-18 18:40:18,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 372 transitions, 766 flow. Second operand has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:18,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:18,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 372 [2022-11-18 18:40:18,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:18,414 INFO L130 PetriNetUnfolder]: 20/602 cut-off events. [2022-11-18 18:40:18,415 INFO L131 PetriNetUnfolder]: For 37/46 co-relation queries the response was YES. [2022-11-18 18:40:18,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 602 events. 20/602 cut-off events. For 37/46 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3078 event pairs, 0 based on Foata normal form. 98/618 useless extension candidates. Maximal degree in co-relation 353. Up to 26 conditions per place. [2022-11-18 18:40:18,429 INFO L137 encePairwiseOnDemand]: 333/372 looper letters, 27 selfloop transitions, 2 changer transitions 0/345 dead transitions. [2022-11-18 18:40:18,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 345 transitions, 770 flow [2022-11-18 18:40:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:40:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2022-11-18 18:40:18,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.910394265232975 [2022-11-18 18:40:18,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2022-11-18 18:40:18,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2022-11-18 18:40:18,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:18,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2022-11-18 18:40:18,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:18,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:18,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:18,485 INFO L175 Difference]: Start difference. First operand has 331 places, 372 transitions, 766 flow. Second operand 3 states and 1016 transitions. [2022-11-18 18:40:18,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 345 transitions, 770 flow [2022-11-18 18:40:18,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 345 transitions, 770 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:40:18,500 INFO L231 Difference]: Finished difference. Result has 332 places, 337 transitions, 710 flow [2022-11-18 18:40:18,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=710, PETRI_PLACES=332, PETRI_TRANSITIONS=337} [2022-11-18 18:40:18,507 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 1 predicate places. [2022-11-18 18:40:18,508 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 337 transitions, 710 flow [2022-11-18 18:40:18,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:18,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:18,510 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] [2022-11-18 18:40:18,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:18,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 18:40:18,718 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:18,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:18,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1692050098, now seen corresponding path program 1 times [2022-11-18 18:40:18,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:18,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011350223] [2022-11-18 18:40:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:18,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:19,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:19,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011350223] [2022-11-18 18:40:19,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011350223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:19,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:19,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:19,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724386065] [2022-11-18 18:40:19,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:19,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:19,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:19,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:19,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:19,038 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 372 [2022-11-18 18:40:19,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 337 transitions, 710 flow. Second operand has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:19,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:19,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 372 [2022-11-18 18:40:19,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:19,280 INFO L130 PetriNetUnfolder]: 20/686 cut-off events. [2022-11-18 18:40:19,280 INFO L131 PetriNetUnfolder]: For 38/47 co-relation queries the response was YES. [2022-11-18 18:40:19,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 686 events. 20/686 cut-off events. For 38/47 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3181 event pairs, 0 based on Foata normal form. 2/605 useless extension candidates. Maximal degree in co-relation 606. Up to 31 conditions per place. [2022-11-18 18:40:19,290 INFO L137 encePairwiseOnDemand]: 367/372 looper letters, 21 selfloop transitions, 2 changer transitions 0/343 dead transitions. [2022-11-18 18:40:19,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 343 transitions, 768 flow [2022-11-18 18:40:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:19,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:40:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2022-11-18 18:40:19,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8808243727598566 [2022-11-18 18:40:19,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2022-11-18 18:40:19,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2022-11-18 18:40:19,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:19,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2022-11-18 18:40:19,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:19,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:19,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:19,307 INFO L175 Difference]: Start difference. First operand has 332 places, 337 transitions, 710 flow. Second operand 3 states and 983 transitions. [2022-11-18 18:40:19,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 343 transitions, 768 flow [2022-11-18 18:40:19,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 343 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:40:19,322 INFO L231 Difference]: Finished difference. Result has 334 places, 338 transitions, 724 flow [2022-11-18 18:40:19,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=724, PETRI_PLACES=334, PETRI_TRANSITIONS=338} [2022-11-18 18:40:19,325 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 3 predicate places. [2022-11-18 18:40:19,325 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 338 transitions, 724 flow [2022-11-18 18:40:19,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:19,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:19,327 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:19,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:40:19,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash -17929766, now seen corresponding path program 1 times [2022-11-18 18:40:19,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:19,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947646234] [2022-11-18 18:40:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:19,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:19,398 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:19,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965910937] [2022-11-18 18:40:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:19,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:19,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:19,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:19,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:40:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:19,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:40:19,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:19,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:40:19,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:19,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947646234] [2022-11-18 18:40:19,776 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:19,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965910937] [2022-11-18 18:40:19,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965910937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:19,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:19,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:19,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207874463] [2022-11-18 18:40:19,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:19,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:40:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:40:19,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:40:19,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-18 18:40:19,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 338 transitions, 724 flow. Second operand has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:19,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:19,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-18 18:40:19,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:20,051 INFO L130 PetriNetUnfolder]: 20/686 cut-off events. [2022-11-18 18:40:20,052 INFO L131 PetriNetUnfolder]: For 45/54 co-relation queries the response was YES. [2022-11-18 18:40:20,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 686 events. 20/686 cut-off events. For 45/54 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3190 event pairs, 0 based on Foata normal form. 0/607 useless extension candidates. Maximal degree in co-relation 559. Up to 39 conditions per place. [2022-11-18 18:40:20,062 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 27 selfloop transitions, 5 changer transitions 0/347 dead transitions. [2022-11-18 18:40:20,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 347 transitions, 806 flow [2022-11-18 18:40:20,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:40:20,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:40:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1603 transitions. [2022-11-18 18:40:20,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8618279569892473 [2022-11-18 18:40:20,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1603 transitions. [2022-11-18 18:40:20,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1603 transitions. [2022-11-18 18:40:20,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:20,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1603 transitions. [2022-11-18 18:40:20,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.6) internal successors, (1603), 5 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,084 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,085 INFO L175 Difference]: Start difference. First operand has 334 places, 338 transitions, 724 flow. Second operand 5 states and 1603 transitions. [2022-11-18 18:40:20,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 347 transitions, 806 flow [2022-11-18 18:40:20,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 347 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:40:20,094 INFO L231 Difference]: Finished difference. Result has 341 places, 341 transitions, 756 flow [2022-11-18 18:40:20,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=756, PETRI_PLACES=341, PETRI_TRANSITIONS=341} [2022-11-18 18:40:20,098 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 10 predicate places. [2022-11-18 18:40:20,098 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 341 transitions, 756 flow [2022-11-18 18:40:20,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,100 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:20,101 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:20,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:20,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:20,316 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:20,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash -555821924, now seen corresponding path program 1 times [2022-11-18 18:40:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:20,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194699654] [2022-11-18 18:40:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:20,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:20,343 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:20,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619781868] [2022-11-18 18:40:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:20,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:20,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:20,346 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:20,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:40:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:20,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:40:20,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:20,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:40:20,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:20,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194699654] [2022-11-18 18:40:20,596 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:20,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619781868] [2022-11-18 18:40:20,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619781868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:20,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:20,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:20,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728385716] [2022-11-18 18:40:20,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:20,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:40:20,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:20,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:40:20,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:40:20,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-18 18:40:20,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 341 transitions, 756 flow. Second operand has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:20,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-18 18:40:20,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:20,829 INFO L130 PetriNetUnfolder]: 20/682 cut-off events. [2022-11-18 18:40:20,829 INFO L131 PetriNetUnfolder]: For 67/76 co-relation queries the response was YES. [2022-11-18 18:40:20,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 682 events. 20/682 cut-off events. For 67/76 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3144 event pairs, 0 based on Foata normal form. 4/613 useless extension candidates. Maximal degree in co-relation 608. Up to 37 conditions per place. [2022-11-18 18:40:20,837 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 20 selfloop transitions, 5 changer transitions 0/340 dead transitions. [2022-11-18 18:40:20,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 340 transitions, 804 flow [2022-11-18 18:40:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:40:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:40:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1279 transitions. [2022-11-18 18:40:20,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595430107526881 [2022-11-18 18:40:20,842 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1279 transitions. [2022-11-18 18:40:20,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1279 transitions. [2022-11-18 18:40:20,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:20,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1279 transitions. [2022-11-18 18:40:20,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,851 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,852 INFO L175 Difference]: Start difference. First operand has 341 places, 341 transitions, 756 flow. Second operand 4 states and 1279 transitions. [2022-11-18 18:40:20,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 340 transitions, 804 flow [2022-11-18 18:40:20,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 340 transitions, 795 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:40:20,859 INFO L231 Difference]: Finished difference. Result has 341 places, 340 transitions, 758 flow [2022-11-18 18:40:20,860 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=758, PETRI_PLACES=341, PETRI_TRANSITIONS=340} [2022-11-18 18:40:20,861 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 10 predicate places. [2022-11-18 18:40:20,861 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 340 transitions, 758 flow [2022-11-18 18:40:20,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:20,863 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:20,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 18:40:21,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:21,069 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:21,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:21,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1116928528, now seen corresponding path program 1 times [2022-11-18 18:40:21,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:21,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127878279] [2022-11-18 18:40:21,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:21,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:21,095 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:21,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671949357] [2022-11-18 18:40:21,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:21,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:21,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:21,097 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:21,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:40:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:21,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:40:21,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:21,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:21,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:21,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127878279] [2022-11-18 18:40:21,520 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:21,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671949357] [2022-11-18 18:40:21,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671949357] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:21,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:21,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:40:21,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209767150] [2022-11-18 18:40:21,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:21,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:40:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:21,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:40:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:40:21,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-18 18:40:21,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 340 transitions, 758 flow. Second operand has 8 states, 8 states have (on average 316.875) internal successors, (2535), 8 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:21,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:21,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-18 18:40:21,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:21,902 INFO L130 PetriNetUnfolder]: 20/768 cut-off events. [2022-11-18 18:40:21,902 INFO L131 PetriNetUnfolder]: For 83/92 co-relation queries the response was YES. [2022-11-18 18:40:21,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 768 events. 20/768 cut-off events. For 83/92 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2848 event pairs, 0 based on Foata normal form. 6/701 useless extension candidates. Maximal degree in co-relation 675. Up to 22 conditions per place. [2022-11-18 18:40:21,911 INFO L137 encePairwiseOnDemand]: 365/372 looper letters, 33 selfloop transitions, 10 changer transitions 0/358 dead transitions. [2022-11-18 18:40:21,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 358 transitions, 898 flow [2022-11-18 18:40:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:40:21,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:40:21,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2871 transitions. [2022-11-18 18:40:21,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8575268817204301 [2022-11-18 18:40:21,919 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2871 transitions. [2022-11-18 18:40:21,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2871 transitions. [2022-11-18 18:40:21,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:21,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2871 transitions. [2022-11-18 18:40:21,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:21,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:21,939 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:21,939 INFO L175 Difference]: Start difference. First operand has 341 places, 340 transitions, 758 flow. Second operand 9 states and 2871 transitions. [2022-11-18 18:40:21,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 358 transitions, 898 flow [2022-11-18 18:40:21,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 358 transitions, 885 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:40:21,949 INFO L231 Difference]: Finished difference. Result has 352 places, 344 transitions, 808 flow [2022-11-18 18:40:21,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=808, PETRI_PLACES=352, PETRI_TRANSITIONS=344} [2022-11-18 18:40:21,950 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 21 predicate places. [2022-11-18 18:40:21,951 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 344 transitions, 808 flow [2022-11-18 18:40:21,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 316.875) internal successors, (2535), 8 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:21,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:21,953 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:21,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:22,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:22,159 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:22,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:22,160 INFO L85 PathProgramCache]: Analyzing trace with hash -239512550, now seen corresponding path program 1 times [2022-11-18 18:40:22,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:22,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366674924] [2022-11-18 18:40:22,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:22,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:22,204 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:22,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563488699] [2022-11-18 18:40:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:22,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:22,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:22,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:22,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:40:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:22,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:40:22,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:22,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:23,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:23,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366674924] [2022-11-18 18:40:23,015 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:23,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563488699] [2022-11-18 18:40:23,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563488699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:23,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:23,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 18:40:23,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20631093] [2022-11-18 18:40:23,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:23,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:40:23,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:40:23,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:40:23,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-18 18:40:23,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 344 transitions, 808 flow. Second operand has 14 states, 14 states have (on average 317.64285714285717) internal successors, (4447), 14 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:23,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:23,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-18 18:40:23,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:23,561 INFO L130 PetriNetUnfolder]: 39/1328 cut-off events. [2022-11-18 18:40:23,561 INFO L131 PetriNetUnfolder]: For 196/214 co-relation queries the response was YES. [2022-11-18 18:40:23,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 1328 events. 39/1328 cut-off events. For 196/214 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6525 event pairs, 0 based on Foata normal form. 4/1186 useless extension candidates. Maximal degree in co-relation 1255. Up to 27 conditions per place. [2022-11-18 18:40:23,583 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 45 selfloop transitions, 16 changer transitions 0/376 dead transitions. [2022-11-18 18:40:23,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 376 transitions, 1060 flow [2022-11-18 18:40:23,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:40:23,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:40:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4773 transitions. [2022-11-18 18:40:23,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8553763440860215 [2022-11-18 18:40:23,601 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4773 transitions. [2022-11-18 18:40:23,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4773 transitions. [2022-11-18 18:40:23,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:23,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4773 transitions. [2022-11-18 18:40:23,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 318.2) internal successors, (4773), 15 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:23,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 372.0) internal successors, (5952), 16 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:23,643 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 372.0) internal successors, (5952), 16 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:23,647 INFO L175 Difference]: Start difference. First operand has 352 places, 344 transitions, 808 flow. Second operand 15 states and 4773 transitions. [2022-11-18 18:40:23,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 376 transitions, 1060 flow [2022-11-18 18:40:23,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 376 transitions, 1042 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 18:40:23,667 INFO L231 Difference]: Finished difference. Result has 361 places, 348 transitions, 857 flow [2022-11-18 18:40:23,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=857, PETRI_PLACES=361, PETRI_TRANSITIONS=348} [2022-11-18 18:40:23,671 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 30 predicate places. [2022-11-18 18:40:23,673 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 348 transitions, 857 flow [2022-11-18 18:40:23,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 317.64285714285717) internal successors, (4447), 14 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:23,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:23,677 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, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:23,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:23,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:23,885 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:23,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1670430672, now seen corresponding path program 2 times [2022-11-18 18:40:23,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:23,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235317008] [2022-11-18 18:40:23,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:23,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:23,929 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:23,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265051729] [2022-11-18 18:40:23,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:40:23,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:23,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:23,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:23,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:40:24,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:40:24,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:40:24,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:40:24,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-18 18:40:24,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:40:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:24,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235317008] [2022-11-18 18:40:24,369 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:24,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265051729] [2022-11-18 18:40:24,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265051729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:24,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:24,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:24,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877933283] [2022-11-18 18:40:24,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:24,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:40:24,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:24,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:40:24,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:40:24,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 372 [2022-11-18 18:40:24,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 348 transitions, 857 flow. Second operand has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:24,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:24,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 372 [2022-11-18 18:40:24,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:24,780 INFO L130 PetriNetUnfolder]: 39/1328 cut-off events. [2022-11-18 18:40:24,780 INFO L131 PetriNetUnfolder]: For 197/215 co-relation queries the response was YES. [2022-11-18 18:40:24,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1614 conditions, 1328 events. 39/1328 cut-off events. For 197/215 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6486 event pairs, 0 based on Foata normal form. 0/1184 useless extension candidates. Maximal degree in co-relation 1252. Up to 68 conditions per place. [2022-11-18 18:40:24,794 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 33 selfloop transitions, 5 changer transitions 0/360 dead transitions. [2022-11-18 18:40:24,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 360 transitions, 957 flow [2022-11-18 18:40:24,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:40:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:40:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1594 transitions. [2022-11-18 18:40:24,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8569892473118279 [2022-11-18 18:40:24,799 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1594 transitions. [2022-11-18 18:40:24,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1594 transitions. [2022-11-18 18:40:24,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:24,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1594 transitions. [2022-11-18 18:40:24,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 318.8) internal successors, (1594), 5 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:24,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:24,807 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:24,807 INFO L175 Difference]: Start difference. First operand has 361 places, 348 transitions, 857 flow. Second operand 5 states and 1594 transitions. [2022-11-18 18:40:24,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 360 transitions, 957 flow [2022-11-18 18:40:24,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 360 transitions, 898 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-18 18:40:24,816 INFO L231 Difference]: Finished difference. Result has 356 places, 351 transitions, 832 flow [2022-11-18 18:40:24,816 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=832, PETRI_PLACES=356, PETRI_TRANSITIONS=351} [2022-11-18 18:40:24,817 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 25 predicate places. [2022-11-18 18:40:24,818 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 351 transitions, 832 flow [2022-11-18 18:40:24,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:24,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:24,819 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:24,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:25,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:25,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:25,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:25,026 INFO L85 PathProgramCache]: Analyzing trace with hash -243742407, now seen corresponding path program 1 times [2022-11-18 18:40:25,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:25,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466089597] [2022-11-18 18:40:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:25,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:25,076 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:25,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655123033] [2022-11-18 18:40:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:25,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:25,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:25,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:25,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:40:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:25,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:40:25,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:25,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:25,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:25,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466089597] [2022-11-18 18:40:25,922 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:25,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655123033] [2022-11-18 18:40:25,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655123033] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:25,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:25,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:40:25,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315858411] [2022-11-18 18:40:25,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:25,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:40:25,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:25,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:40:25,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:40:25,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-18 18:40:25,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 351 transitions, 832 flow. Second operand has 16 states, 16 states have (on average 317.6875) internal successors, (5083), 16 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:25,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:25,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-18 18:40:25,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:26,570 INFO L130 PetriNetUnfolder]: 20/1102 cut-off events. [2022-11-18 18:40:26,570 INFO L131 PetriNetUnfolder]: For 153/162 co-relation queries the response was YES. [2022-11-18 18:40:26,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 1102 events. 20/1102 cut-off events. For 153/162 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2824 event pairs, 0 based on Foata normal form. 8/1041 useless extension candidates. Maximal degree in co-relation 1122. Up to 20 conditions per place. [2022-11-18 18:40:26,587 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 64 selfloop transitions, 22 changer transitions 0/404 dead transitions. [2022-11-18 18:40:26,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 404 transitions, 1197 flow [2022-11-18 18:40:26,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:40:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:40:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6683 transitions. [2022-11-18 18:40:26,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.855478750640041 [2022-11-18 18:40:26,602 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6683 transitions. [2022-11-18 18:40:26,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6683 transitions. [2022-11-18 18:40:26,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:26,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6683 transitions. [2022-11-18 18:40:26,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 318.23809523809524) internal successors, (6683), 21 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:26,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 372.0) internal successors, (8184), 22 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:26,635 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 372.0) internal successors, (8184), 22 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:26,636 INFO L175 Difference]: Start difference. First operand has 356 places, 351 transitions, 832 flow. Second operand 21 states and 6683 transitions. [2022-11-18 18:40:26,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 404 transitions, 1197 flow [2022-11-18 18:40:26,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 404 transitions, 1187 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-18 18:40:26,646 INFO L231 Difference]: Finished difference. Result has 380 places, 360 transitions, 942 flow [2022-11-18 18:40:26,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=942, PETRI_PLACES=380, PETRI_TRANSITIONS=360} [2022-11-18 18:40:26,651 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 49 predicate places. [2022-11-18 18:40:26,651 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 360 transitions, 942 flow [2022-11-18 18:40:26,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 317.6875) internal successors, (5083), 16 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:26,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:26,654 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:26,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:26,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 18:40:26,861 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:26,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:26,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1614091449, now seen corresponding path program 2 times [2022-11-18 18:40:26,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:26,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241172560] [2022-11-18 18:40:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:26,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:26,934 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:26,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75880867] [2022-11-18 18:40:26,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:40:26,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:26,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:26,936 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:26,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:40:27,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:40:27,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:40:27,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:40:27,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-18 18:40:27,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:40:27,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:27,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241172560] [2022-11-18 18:40:27,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:27,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75880867] [2022-11-18 18:40:27,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75880867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:27,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:27,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:27,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171342090] [2022-11-18 18:40:27,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:27,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:40:27,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:27,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:40:27,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:40:27,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 372 [2022-11-18 18:40:27,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 360 transitions, 942 flow. Second operand has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:27,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:27,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 372 [2022-11-18 18:40:27,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:28,176 INFO L130 PetriNetUnfolder]: 20/1100 cut-off events. [2022-11-18 18:40:28,176 INFO L131 PetriNetUnfolder]: For 217/226 co-relation queries the response was YES. [2022-11-18 18:40:28,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 1100 events. 20/1100 cut-off events. For 217/226 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2821 event pairs, 0 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 1123. Up to 89 conditions per place. [2022-11-18 18:40:28,188 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 22 selfloop transitions, 5 changer transitions 0/358 dead transitions. [2022-11-18 18:40:28,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 358 transitions, 986 flow [2022-11-18 18:40:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:40:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:40:28,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1269 transitions. [2022-11-18 18:40:28,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8528225806451613 [2022-11-18 18:40:28,193 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1269 transitions. [2022-11-18 18:40:28,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1269 transitions. [2022-11-18 18:40:28,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:28,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1269 transitions. [2022-11-18 18:40:28,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:28,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:28,201 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:28,201 INFO L175 Difference]: Start difference. First operand has 380 places, 360 transitions, 942 flow. Second operand 4 states and 1269 transitions. [2022-11-18 18:40:28,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 358 transitions, 986 flow [2022-11-18 18:40:28,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 358 transitions, 963 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 18:40:28,210 INFO L231 Difference]: Finished difference. Result has 371 places, 358 transitions, 919 flow [2022-11-18 18:40:28,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=919, PETRI_PLACES=371, PETRI_TRANSITIONS=358} [2022-11-18 18:40:28,212 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 40 predicate places. [2022-11-18 18:40:28,212 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 358 transitions, 919 flow [2022-11-18 18:40:28,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:28,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:28,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:28,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:28,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:28,419 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:28,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:28,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1333580358, now seen corresponding path program 1 times [2022-11-18 18:40:28,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:28,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807202457] [2022-11-18 18:40:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:28,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:28,487 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:28,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844364744] [2022-11-18 18:40:28,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:28,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:28,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:28,489 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:28,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:40:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:28,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:40:28,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:29,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:30,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:30,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807202457] [2022-11-18 18:40:30,325 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:30,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844364744] [2022-11-18 18:40:30,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844364744] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:30,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:30,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 18:40:30,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32507645] [2022-11-18 18:40:30,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:30,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:40:30,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:30,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:40:30,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:40:30,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-18 18:40:30,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 358 transitions, 919 flow. Second operand has 32 states, 32 states have (on average 318.125) internal successors, (10180), 32 states have internal predecessors, (10180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:30,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:30,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-18 18:40:30,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:31,905 INFO L130 PetriNetUnfolder]: 20/1772 cut-off events. [2022-11-18 18:40:31,905 INFO L131 PetriNetUnfolder]: For 762/771 co-relation queries the response was YES. [2022-11-18 18:40:31,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 1772 events. 20/1772 cut-off events. For 762/771 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2862 event pairs, 0 based on Foata normal form. 16/1719 useless extension candidates. Maximal degree in co-relation 2237. Up to 38 conditions per place. [2022-11-18 18:40:31,916 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 128 selfloop transitions, 46 changer transitions 0/490 dead transitions. [2022-11-18 18:40:31,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 490 transitions, 1863 flow [2022-11-18 18:40:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 18:40:31,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 18:40:31,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 14311 transitions. [2022-11-18 18:40:31,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8548984468339307 [2022-11-18 18:40:31,945 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 14311 transitions. [2022-11-18 18:40:31,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 14311 transitions. [2022-11-18 18:40:32,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:32,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 14311 transitions. [2022-11-18 18:40:32,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 318.02222222222224) internal successors, (14311), 45 states have internal predecessors, (14311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:32,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 372.0) internal successors, (17112), 46 states have internal predecessors, (17112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:32,071 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 372.0) internal successors, (17112), 46 states have internal predecessors, (17112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:32,071 INFO L175 Difference]: Start difference. First operand has 371 places, 358 transitions, 919 flow. Second operand 45 states and 14311 transitions. [2022-11-18 18:40:32,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 490 transitions, 1863 flow [2022-11-18 18:40:32,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 490 transitions, 1853 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:40:32,084 INFO L231 Difference]: Finished difference. Result has 421 places, 383 transitions, 1232 flow [2022-11-18 18:40:32,085 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1232, PETRI_PLACES=421, PETRI_TRANSITIONS=383} [2022-11-18 18:40:32,086 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 90 predicate places. [2022-11-18 18:40:32,086 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 383 transitions, 1232 flow [2022-11-18 18:40:32,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 318.125) internal successors, (10180), 32 states have internal predecessors, (10180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:32,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:32,089 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:32,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:32,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:40:32,299 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:32,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:32,299 INFO L85 PathProgramCache]: Analyzing trace with hash 271598778, now seen corresponding path program 2 times [2022-11-18 18:40:32,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:32,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653427706] [2022-11-18 18:40:32,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:32,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:32,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:32,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831420694] [2022-11-18 18:40:32,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:40:32,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:32,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:32,431 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:32,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:40:32,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:40:32,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:40:32,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:40:32,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-18 18:40:32,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:40:32,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:32,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653427706] [2022-11-18 18:40:32,969 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:32,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831420694] [2022-11-18 18:40:32,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831420694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:32,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:32,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:32,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186792427] [2022-11-18 18:40:32,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:32,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:40:32,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:32,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:40:32,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:40:32,973 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 372 [2022-11-18 18:40:32,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 383 transitions, 1232 flow. Second operand has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:32,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:32,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 372 [2022-11-18 18:40:32,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:33,641 INFO L130 PetriNetUnfolder]: 15/1656 cut-off events. [2022-11-18 18:40:33,641 INFO L131 PetriNetUnfolder]: For 757/770 co-relation queries the response was YES. [2022-11-18 18:40:33,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2294 conditions, 1656 events. 15/1656 cut-off events. For 757/770 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2040 event pairs, 0 based on Foata normal form. 3/1609 useless extension candidates. Maximal degree in co-relation 2076. Up to 38 conditions per place. [2022-11-18 18:40:33,650 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 15 selfloop transitions, 4 changer transitions 0/384 dead transitions. [2022-11-18 18:40:33,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 384 transitions, 1272 flow [2022-11-18 18:40:33,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:40:33,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:40:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1611 transitions. [2022-11-18 18:40:33,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8661290322580645 [2022-11-18 18:40:33,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1611 transitions. [2022-11-18 18:40:33,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1611 transitions. [2022-11-18 18:40:33,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:33,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1611 transitions. [2022-11-18 18:40:33,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 322.2) internal successors, (1611), 5 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:33,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:33,660 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:33,660 INFO L175 Difference]: Start difference. First operand has 421 places, 383 transitions, 1232 flow. Second operand 5 states and 1611 transitions. [2022-11-18 18:40:33,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 384 transitions, 1272 flow [2022-11-18 18:40:33,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 384 transitions, 1215 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-18 18:40:33,673 INFO L231 Difference]: Finished difference. Result has 407 places, 382 transitions, 1185 flow [2022-11-18 18:40:33,674 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1185, PETRI_PLACES=407, PETRI_TRANSITIONS=382} [2022-11-18 18:40:33,675 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 76 predicate places. [2022-11-18 18:40:33,675 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 382 transitions, 1185 flow [2022-11-18 18:40:33,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:33,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:33,676 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:33,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-18 18:40:33,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:33,882 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:33,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:33,883 INFO L85 PathProgramCache]: Analyzing trace with hash -170371692, now seen corresponding path program 1 times [2022-11-18 18:40:33,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:33,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692970542] [2022-11-18 18:40:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:33,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:33,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:33,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896280663] [2022-11-18 18:40:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:33,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:33,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:33,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:34,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:40:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:34,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:40:34,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:36,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:38,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692970542] [2022-11-18 18:40:38,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:38,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896280663] [2022-11-18 18:40:38,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896280663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:38,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:38,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-18 18:40:38,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020884830] [2022-11-18 18:40:38,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:38,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 18:40:38,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:38,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 18:40:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 18:40:38,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-18 18:40:38,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 382 transitions, 1185 flow. Second operand has 61 states, 61 states have (on average 318.37704918032784) internal successors, (19421), 61 states have internal predecessors, (19421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:38,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:38,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-18 18:40:38,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:42,480 INFO L130 PetriNetUnfolder]: 15/2916 cut-off events. [2022-11-18 18:40:42,480 INFO L131 PetriNetUnfolder]: For 4974/4978 co-relation queries the response was YES. [2022-11-18 18:40:42,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4698 conditions, 2916 events. 15/2916 cut-off events. For 4974/4978 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2092 event pairs, 0 based on Foata normal form. 30/2897 useless extension candidates. Maximal degree in co-relation 4478. Up to 96 conditions per place. [2022-11-18 18:40:42,498 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 248 selfloop transitions, 91 changer transitions 0/654 dead transitions. [2022-11-18 18:40:42,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 654 transitions, 3275 flow [2022-11-18 18:40:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 18:40:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-18 18:40:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 28613 transitions. [2022-11-18 18:40:42,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8546296296296296 [2022-11-18 18:40:42,548 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 28613 transitions. [2022-11-18 18:40:42,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 28613 transitions. [2022-11-18 18:40:42,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:42,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 28613 transitions. [2022-11-18 18:40:42,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 317.9222222222222) internal successors, (28613), 90 states have internal predecessors, (28613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:42,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 372.0) internal successors, (33852), 91 states have internal predecessors, (33852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:42,674 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 372.0) internal successors, (33852), 91 states have internal predecessors, (33852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:42,674 INFO L175 Difference]: Start difference. First operand has 407 places, 382 transitions, 1185 flow. Second operand 90 states and 28613 transitions. [2022-11-18 18:40:42,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 654 transitions, 3275 flow [2022-11-18 18:40:42,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 654 transitions, 3267 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:40:42,705 INFO L231 Difference]: Finished difference. Result has 508 places, 428 transitions, 1866 flow [2022-11-18 18:40:42,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1866, PETRI_PLACES=508, PETRI_TRANSITIONS=428} [2022-11-18 18:40:42,707 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 177 predicate places. [2022-11-18 18:40:42,707 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 428 transitions, 1866 flow [2022-11-18 18:40:42,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 318.37704918032784) internal successors, (19421), 61 states have internal predecessors, (19421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:42,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:42,710 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] [2022-11-18 18:40:42,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:42,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:42,922 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:42,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:42,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2068518102, now seen corresponding path program 2 times [2022-11-18 18:40:42,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:42,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275340311] [2022-11-18 18:40:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:42,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:43,140 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:43,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892495408] [2022-11-18 18:40:43,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:40:43,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:43,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:43,143 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:43,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:40:43,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:40:43,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:40:44,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:40:44,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-18 18:40:44,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:40:44,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:44,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275340311] [2022-11-18 18:40:44,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:44,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892495408] [2022-11-18 18:40:44,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892495408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:44,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:44,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:44,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579772098] [2022-11-18 18:40:44,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:44,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:40:44,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:44,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:40:44,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:40:44,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 372 [2022-11-18 18:40:44,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 428 transitions, 1866 flow. Second operand has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:44,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:44,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 372 [2022-11-18 18:40:44,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:45,729 INFO L130 PetriNetUnfolder]: 15/2915 cut-off events. [2022-11-18 18:40:45,730 INFO L131 PetriNetUnfolder]: For 2984/2996 co-relation queries the response was YES. [2022-11-18 18:40:45,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4393 conditions, 2915 events. 15/2915 cut-off events. For 2984/2996 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2078 event pairs, 0 based on Foata normal form. 1/2868 useless extension candidates. Maximal degree in co-relation 4158. Up to 96 conditions per place. [2022-11-18 18:40:45,741 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 13 selfloop transitions, 3 changer transitions 0/427 dead transitions. [2022-11-18 18:40:45,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 427 transitions, 1896 flow [2022-11-18 18:40:45,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:40:45,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:40:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1289 transitions. [2022-11-18 18:40:45,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.866263440860215 [2022-11-18 18:40:45,744 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1289 transitions. [2022-11-18 18:40:45,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1289 transitions. [2022-11-18 18:40:45,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:45,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1289 transitions. [2022-11-18 18:40:45,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 322.25) internal successors, (1289), 4 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:45,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:45,749 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:45,749 INFO L175 Difference]: Start difference. First operand has 508 places, 428 transitions, 1866 flow. Second operand 4 states and 1289 transitions. [2022-11-18 18:40:45,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 427 transitions, 1896 flow [2022-11-18 18:40:45,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 427 transitions, 1777 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 18:40:45,786 INFO L231 Difference]: Finished difference. Result has 468 places, 427 transitions, 1751 flow [2022-11-18 18:40:45,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1751, PETRI_PLACES=468, PETRI_TRANSITIONS=427} [2022-11-18 18:40:45,788 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 137 predicate places. [2022-11-18 18:40:45,788 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 427 transitions, 1751 flow [2022-11-18 18:40:45,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:45,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:45,789 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:45,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:46,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 18:40:46,001 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:46,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:46,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2059074967, now seen corresponding path program 1 times [2022-11-18 18:40:46,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:46,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713273438] [2022-11-18 18:40:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:46,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:46,191 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:46,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795771530] [2022-11-18 18:40:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:46,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:46,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:46,194 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:46,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:40:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:47,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 5187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:40:48,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-18 18:40:50,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-18 18:40:52,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:52,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713273438] [2022-11-18 18:40:52,810 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:52,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795771530] [2022-11-18 18:40:52,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795771530] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:52,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:52,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:40:52,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236683816] [2022-11-18 18:40:52,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:52,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:40:52,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:52,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:40:52,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:40:52,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 372 [2022-11-18 18:40:52,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 427 transitions, 1751 flow. Second operand has 8 states, 8 states have (on average 314.75) internal successors, (2518), 8 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:52,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:52,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 372 [2022-11-18 18:40:52,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:56,209 INFO L130 PetriNetUnfolder]: 16/4221 cut-off events. [2022-11-18 18:40:56,209 INFO L131 PetriNetUnfolder]: For 4637/4641 co-relation queries the response was YES. [2022-11-18 18:40:56,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6772 conditions, 4221 events. 16/4221 cut-off events. For 4637/4641 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1774 event pairs, 0 based on Foata normal form. 3/4176 useless extension candidates. Maximal degree in co-relation 6536. Up to 187 conditions per place. [2022-11-18 18:40:56,223 INFO L137 encePairwiseOnDemand]: 365/372 looper letters, 42 selfloop transitions, 9 changer transitions 0/451 dead transitions. [2022-11-18 18:40:56,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 451 transitions, 1915 flow [2022-11-18 18:40:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:40:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:40:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2853 transitions. [2022-11-18 18:40:56,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8521505376344086 [2022-11-18 18:40:56,228 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2853 transitions. [2022-11-18 18:40:56,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2853 transitions. [2022-11-18 18:40:56,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:56,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2853 transitions. [2022-11-18 18:40:56,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 317.0) internal successors, (2853), 9 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:56,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:56,237 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:56,237 INFO L175 Difference]: Start difference. First operand has 468 places, 427 transitions, 1751 flow. Second operand 9 states and 2853 transitions. [2022-11-18 18:40:56,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 451 transitions, 1915 flow [2022-11-18 18:40:56,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 451 transitions, 1909 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:40:56,279 INFO L231 Difference]: Finished difference. Result has 478 places, 431 transitions, 1801 flow [2022-11-18 18:40:56,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1801, PETRI_PLACES=478, PETRI_TRANSITIONS=431} [2022-11-18 18:40:56,281 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 147 predicate places. [2022-11-18 18:40:56,281 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 431 transitions, 1801 flow [2022-11-18 18:40:56,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 314.75) internal successors, (2518), 8 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:56,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:56,283 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:56,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:56,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:40:56,502 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:40:56,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2008241645, now seen corresponding path program 1 times [2022-11-18 18:40:56,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:56,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161594218] [2022-11-18 18:40:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:56,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:56,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:56,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807624030] [2022-11-18 18:40:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:56,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:56,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:56,710 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:56,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:41:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:03,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 5333 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:41:03,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 18:41:05,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 18:41:07,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:07,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161594218] [2022-11-18 18:41:07,881 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:41:07,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807624030] [2022-11-18 18:41:07,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807624030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:07,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:41:07,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 18:41:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620630457] [2022-11-18 18:41:07,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:07,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:41:07,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:07,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:41:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:41:07,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 372 [2022-11-18 18:41:07,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 431 transitions, 1801 flow. Second operand has 14 states, 14 states have (on average 306.35714285714283) internal successors, (4289), 14 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:07,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:41:07,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 372 [2022-11-18 18:41:07,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:41:11,806 INFO L130 PetriNetUnfolder]: 16/4189 cut-off events. [2022-11-18 18:41:11,806 INFO L131 PetriNetUnfolder]: For 4825/4829 co-relation queries the response was YES. [2022-11-18 18:41:11,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 4189 events. 16/4189 cut-off events. For 4825/4829 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1625 event pairs, 0 based on Foata normal form. 32/4173 useless extension candidates. Maximal degree in co-relation 6977. Up to 307 conditions per place. [2022-11-18 18:41:11,824 INFO L137 encePairwiseOnDemand]: 358/372 looper letters, 228 selfloop transitions, 144 changer transitions 0/671 dead transitions. [2022-11-18 18:41:11,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 671 transitions, 4669 flow [2022-11-18 18:41:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:41:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:41:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7331 transitions. [2022-11-18 18:41:11,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8211245519713262 [2022-11-18 18:41:11,834 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7331 transitions. [2022-11-18 18:41:11,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7331 transitions. [2022-11-18 18:41:11,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:41:11,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7331 transitions. [2022-11-18 18:41:11,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 305.4583333333333) internal successors, (7331), 24 states have internal predecessors, (7331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:11,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 372.0) internal successors, (9300), 25 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:11,856 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 372.0) internal successors, (9300), 25 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:11,856 INFO L175 Difference]: Start difference. First operand has 478 places, 431 transitions, 1801 flow. Second operand 24 states and 7331 transitions. [2022-11-18 18:41:11,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 671 transitions, 4669 flow [2022-11-18 18:41:11,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 671 transitions, 4653 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 18:41:11,902 INFO L231 Difference]: Finished difference. Result has 502 places, 562 transitions, 3840 flow [2022-11-18 18:41:11,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3840, PETRI_PLACES=502, PETRI_TRANSITIONS=562} [2022-11-18 18:41:11,903 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 171 predicate places. [2022-11-18 18:41:11,904 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 562 transitions, 3840 flow [2022-11-18 18:41:11,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 306.35714285714283) internal successors, (4289), 14 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:11,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:41:11,905 INFO L209 CegarLoopForPetriNet]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:11,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:12,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:41:12,130 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:41:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:12,131 INFO L85 PathProgramCache]: Analyzing trace with hash 150223635, now seen corresponding path program 1 times [2022-11-18 18:41:12,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:12,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572852594] [2022-11-18 18:41:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:12,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:12,355 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:41:12,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145593483] [2022-11-18 18:41:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:12,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:12,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:12,357 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:12,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:41:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:24,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 5501 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:41:24,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2610 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 18:41:26,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:41:26,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:26,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572852594] [2022-11-18 18:41:26,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:41:26,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145593483] [2022-11-18 18:41:26,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145593483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:26,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:26,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:41:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379957570] [2022-11-18 18:41:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:26,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:41:26,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:41:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:41:26,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 372 [2022-11-18 18:41:26,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 562 transitions, 3840 flow. Second operand has 11 states, 11 states have (on average 305.45454545454544) internal successors, (3360), 11 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:26,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:41:26,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 372 [2022-11-18 18:41:26,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:41:31,473 INFO L130 PetriNetUnfolder]: 16/4132 cut-off events. [2022-11-18 18:41:31,474 INFO L131 PetriNetUnfolder]: For 7164/7168 co-relation queries the response was YES. [2022-11-18 18:41:31,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7689 conditions, 4132 events. 16/4132 cut-off events. For 7164/7168 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1542 event pairs, 0 based on Foata normal form. 57/4141 useless extension candidates. Maximal degree in co-relation 7443. Up to 310 conditions per place. [2022-11-18 18:41:31,505 INFO L137 encePairwiseOnDemand]: 362/372 looper letters, 151 selfloop transitions, 202 changer transitions 0/652 dead transitions. [2022-11-18 18:41:31,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 652 transitions, 5332 flow [2022-11-18 18:41:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:41:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 18:41:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4891 transitions. [2022-11-18 18:41:31,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8217405913978495 [2022-11-18 18:41:31,517 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4891 transitions. [2022-11-18 18:41:31,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4891 transitions. [2022-11-18 18:41:31,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:41:31,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4891 transitions. [2022-11-18 18:41:31,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 305.6875) internal successors, (4891), 16 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:31,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:31,533 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:31,533 INFO L175 Difference]: Start difference. First operand has 502 places, 562 transitions, 3840 flow. Second operand 16 states and 4891 transitions. [2022-11-18 18:41:31,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 652 transitions, 5332 flow [2022-11-18 18:41:31,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 652 transitions, 5300 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-18 18:41:31,591 INFO L231 Difference]: Finished difference. Result has 510 places, 624 transitions, 5255 flow [2022-11-18 18:41:31,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=3789, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5255, PETRI_PLACES=510, PETRI_TRANSITIONS=624} [2022-11-18 18:41:31,592 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 179 predicate places. [2022-11-18 18:41:31,592 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 624 transitions, 5255 flow [2022-11-18 18:41:31,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 305.45454545454544) internal successors, (3360), 11 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:31,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:41:31,594 INFO L209 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:31,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:31,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:41:31,810 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:41:31,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:31,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1663053395, now seen corresponding path program 2 times [2022-11-18 18:41:31,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:31,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531226511] [2022-11-18 18:41:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:31,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:32,227 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:41:32,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723265055] [2022-11-18 18:41:32,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:41:32,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:32,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:32,229 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:32,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:42:18,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:42:18,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:18,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 10560 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:42:18,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 42044 proven. 0 refuted. 0 times theorem prover too weak. 35773 trivial. 0 not checked. [2022-11-18 18:42:23,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:23,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531226511] [2022-11-18 18:42:23,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:23,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723265055] [2022-11-18 18:42:23,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723265055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:23,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:23,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:42:23,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236607525] [2022-11-18 18:42:23,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:23,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:42:23,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:23,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:42:23,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:42:23,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 372 [2022-11-18 18:42:23,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 624 transitions, 5255 flow. Second operand has 9 states, 9 states have (on average 311.44444444444446) internal successors, (2803), 9 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:23,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:23,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 372 [2022-11-18 18:42:23,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:28,035 INFO L130 PetriNetUnfolder]: 16/4104 cut-off events. [2022-11-18 18:42:28,035 INFO L131 PetriNetUnfolder]: For 10766/10770 co-relation queries the response was YES. [2022-11-18 18:42:28,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7727 conditions, 4104 events. 16/4104 cut-off events. For 10766/10770 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1481 event pairs, 0 based on Foata normal form. 28/4084 useless extension candidates. Maximal degree in co-relation 7479. Up to 217 conditions per place. [2022-11-18 18:42:28,055 INFO L137 encePairwiseOnDemand]: 363/372 looper letters, 204 selfloop transitions, 50 changer transitions 0/645 dead transitions. [2022-11-18 18:42:28,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 645 transitions, 5941 flow [2022-11-18 18:42:28,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:42:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:42:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3733 transitions. [2022-11-18 18:42:28,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8362455197132617 [2022-11-18 18:42:28,062 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3733 transitions. [2022-11-18 18:42:28,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3733 transitions. [2022-11-18 18:42:28,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:28,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3733 transitions. [2022-11-18 18:42:28,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 311.0833333333333) internal successors, (3733), 12 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:28,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 372.0) internal successors, (4836), 13 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:28,082 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 372.0) internal successors, (4836), 13 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:28,083 INFO L175 Difference]: Start difference. First operand has 510 places, 624 transitions, 5255 flow. Second operand 12 states and 3733 transitions. [2022-11-18 18:42:28,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 645 transitions, 5941 flow [2022-11-18 18:42:28,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 645 transitions, 5751 flow, removed 67 selfloop flow, removed 10 redundant places. [2022-11-18 18:42:28,161 INFO L231 Difference]: Finished difference. Result has 511 places, 624 transitions, 5208 flow [2022-11-18 18:42:28,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=5059, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5208, PETRI_PLACES=511, PETRI_TRANSITIONS=624} [2022-11-18 18:42:28,162 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 180 predicate places. [2022-11-18 18:42:28,162 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 624 transitions, 5208 flow [2022-11-18 18:42:28,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 311.44444444444446) internal successors, (2803), 9 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:28,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:28,164 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:28,381 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2022-11-18 18:42:28,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:28,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:42:28,420 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:42:28,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:28,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1562762791, now seen corresponding path program 2 times [2022-11-18 18:42:28,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:28,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789445585] [2022-11-18 18:42:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:28,972 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:28,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105531866] [2022-11-18 18:42:28,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:42:28,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:28,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:28,975 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:29,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 18:42:33,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:42:33,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:33,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 15307 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:42:33,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-18 18:42:40,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-18 18:42:48,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:48,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789445585] [2022-11-18 18:42:48,283 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:48,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105531866] [2022-11-18 18:42:48,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105531866] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:48,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:48,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:42:48,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911104362] [2022-11-18 18:42:48,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:48,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:42:48,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:48,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:42:48,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:42:48,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 372 [2022-11-18 18:42:48,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 624 transitions, 5208 flow. Second operand has 16 states, 16 states have (on average 315.875) internal successors, (5054), 16 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:48,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:48,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 372 [2022-11-18 18:42:48,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:06,445 INFO L130 PetriNetUnfolder]: 20/9092 cut-off events. [2022-11-18 18:43:06,445 INFO L131 PetriNetUnfolder]: For 24582/24586 co-relation queries the response was YES. [2022-11-18 18:43:06,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17205 conditions, 9092 events. 20/9092 cut-off events. For 24582/24586 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1490 event pairs, 0 based on Foata normal form. 4/9048 useless extension candidates. Maximal degree in co-relation 16957. Up to 336 conditions per place. [2022-11-18 18:43:06,483 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 78 selfloop transitions, 21 changer transitions 0/693 dead transitions. [2022-11-18 18:43:06,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 693 transitions, 5700 flow [2022-11-18 18:43:06,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:43:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:43:06,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6629 transitions. [2022-11-18 18:43:06,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8485663082437276 [2022-11-18 18:43:06,491 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6629 transitions. [2022-11-18 18:43:06,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6629 transitions. [2022-11-18 18:43:06,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:06,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6629 transitions. [2022-11-18 18:43:06,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 315.6666666666667) internal successors, (6629), 21 states have internal predecessors, (6629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 372.0) internal successors, (8184), 22 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,510 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 372.0) internal successors, (8184), 22 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,510 INFO L175 Difference]: Start difference. First operand has 511 places, 624 transitions, 5208 flow. Second operand 21 states and 6629 transitions. [2022-11-18 18:43:06,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 693 transitions, 5700 flow [2022-11-18 18:43:06,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 693 transitions, 5607 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-11-18 18:43:06,628 INFO L231 Difference]: Finished difference. Result has 526 places, 637 transitions, 5310 flow [2022-11-18 18:43:06,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=5139, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5310, PETRI_PLACES=526, PETRI_TRANSITIONS=637} [2022-11-18 18:43:06,629 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 195 predicate places. [2022-11-18 18:43:06,629 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 637 transitions, 5310 flow [2022-11-18 18:43:06,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 315.875) internal successors, (5054), 16 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:06,633 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:06,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:06,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:43:06,854 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 18:43:06,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash 413305017, now seen corresponding path program 3 times [2022-11-18 18:43:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:06,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407819516] [2022-11-18 18:43:06,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:08,103 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:08,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250577256] [2022-11-18 18:43:08,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:43:08,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:08,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:08,106 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:08,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4320cf8-eb79-416a-b415-53e1025ce864/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process