./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/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_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/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_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- 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 18:49:48,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:49:48,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:49:48,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:49:48,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:49:48,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:49:48,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:49:48,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:49:48,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:49:48,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:49:48,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:49:48,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:49:48,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:49:48,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:49:48,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:49:48,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:49:48,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:49:48,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:49:48,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:49:48,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:49:48,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:49:48,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:49:48,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:49:48,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:49:48,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:49:48,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:49:48,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:49:48,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:49:48,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:49:48,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:49:48,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:49:48,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:49:48,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:49:48,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:49:48,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:49:48,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:49:48,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:49:48,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:49:48,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:49:48,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:49:48,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:49:48,238 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:49:48,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:49:48,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:49:48,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:49:48,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:49:48,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:49:48,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:49:48,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:49:48,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:49:48,281 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:49:48,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:49:48,282 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:49:48,282 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:49:48,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:49:48,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:49:48,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:49:48,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:49:48,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:49:48,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:49:48,284 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:49:48,284 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:49:48,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:49:48,285 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:49:48,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:49:48,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:49:48,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:49:48,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:49:48,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:49:48,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:49:48,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:49:48,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:49:48,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:49:48,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:49:48,289 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:49:48,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:49:48,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:49:48,290 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_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2022-11-18 18:49:48,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:49:48,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:49:48,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:49:48,607 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:49:48,608 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:49:48,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-11-18 18:49:48,680 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/data/f0ad59ff5/741a423102b249a1bfbb4f6ee9228acb/FLAGb260fa81f [2022-11-18 18:49:49,302 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:49:49,302 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-11-18 18:49:49,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/data/f0ad59ff5/741a423102b249a1bfbb4f6ee9228acb/FLAGb260fa81f [2022-11-18 18:49:49,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/data/f0ad59ff5/741a423102b249a1bfbb4f6ee9228acb [2022-11-18 18:49:49,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:49:49,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:49:49,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:49:49,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:49:49,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:49:49,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:49:49" (1/1) ... [2022-11-18 18:49:49,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33831cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:49, skipping insertion in model container [2022-11-18 18:49:49,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:49:49" (1/1) ... [2022-11-18 18:49:49,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:49:49,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:49:50,200 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_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-11-18 18:49:50,215 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:49:50,217 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:49:50,218 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:49:50,219 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:49:50,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:49:50,296 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:49:50,325 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_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-11-18 18:49:50,328 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:49:50,329 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:49:50,329 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:49:50,330 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:49:50,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:49:50,404 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:49:50,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50 WrapperNode [2022-11-18 18:49:50,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:49:50,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:49:50,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:49:50,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:49:50,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50" (1/1) ... [2022-11-18 18:49:50,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50" (1/1) ... [2022-11-18 18:49:50,476 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 239 [2022-11-18 18:49:50,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:49:50,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:49:50,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:49:50,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:49:50,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50" (1/1) ... [2022-11-18 18:49:50,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50" (1/1) ... [2022-11-18 18:49:50,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50" (1/1) ... [2022-11-18 18:49:50,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50" (1/1) ... [2022-11-18 18:49:50,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50" (1/1) ... [2022-11-18 18:49:50,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50" (1/1) ... [2022-11-18 18:49:50,542 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50" (1/1) ... [2022-11-18 18:49:50,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50" (1/1) ... [2022-11-18 18:49:50,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:49:50,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:49:50,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:49:50,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:49:50,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50" (1/1) ... [2022-11-18 18:49:50,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:49:50,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:50,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:49:50,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:49:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:49:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:49:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:49:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:49:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:49:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:49:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:49:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:49:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:49:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 18:49:50,679 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 18:49:50,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:49:50,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:49:50,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:49:50,681 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 18:49:50,897 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:49:50,899 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:49:51,435 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:49:51,445 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:49:51,460 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-18 18:49:51,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:49:51 BoogieIcfgContainer [2022-11-18 18:49:51,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:49:51,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:49:51,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:49:51,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:49:51,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:49:49" (1/3) ... [2022-11-18 18:49:51,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4347b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:49:51, skipping insertion in model container [2022-11-18 18:49:51,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:50" (2/3) ... [2022-11-18 18:49:51,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4347b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:49:51, skipping insertion in model container [2022-11-18 18:49:51,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:49:51" (3/3) ... [2022-11-18 18:49:51,475 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2022-11-18 18:49:51,484 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:49:51,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:49:51,496 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 18:49:51,496 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:49:51,678 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 18:49:51,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 287 transitions, 582 flow [2022-11-18 18:49:51,840 INFO L130 PetriNetUnfolder]: 29/304 cut-off events. [2022-11-18 18:49:51,840 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-18 18:49:51,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 304 events. 29/304 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 750 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 167. Up to 4 conditions per place. [2022-11-18 18:49:51,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 287 transitions, 582 flow [2022-11-18 18:49:51,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 284 transitions, 576 flow [2022-11-18 18:49:51,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:49:51,876 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;@711d61bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:49:51,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-18 18:49:51,890 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-18 18:49:51,891 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:49:51,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:51,892 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] [2022-11-18 18:49:51,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:49:51,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:51,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1356515754, now seen corresponding path program 1 times [2022-11-18 18:49:51,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:51,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147106731] [2022-11-18 18:49:51,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:51,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:52,066 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:52,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059770434] [2022-11-18 18:49:52,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:52,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:52,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:52,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:52,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:49:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:52,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:49:52,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:52,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:52,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:52,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:52,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147106731] [2022-11-18 18:49:52,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:52,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059770434] [2022-11-18 18:49:52,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059770434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:52,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:52,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:49:52,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101493475] [2022-11-18 18:49:52,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:52,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:49:52,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:52,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:49:52,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:49:52,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 287 [2022-11-18 18:49:52,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 284 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 18:49:52,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:52,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 287 [2022-11-18 18:49:52,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:52,629 INFO L130 PetriNetUnfolder]: 7/338 cut-off events. [2022-11-18 18:49:52,630 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-18 18:49:52,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 338 events. 7/338 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 839 event pairs, 0 based on Foata normal form. 22/326 useless extension candidates. Maximal degree in co-relation 244. Up to 17 conditions per place. [2022-11-18 18:49:52,636 INFO L137 encePairwiseOnDemand]: 262/287 looper letters, 23 selfloop transitions, 2 changer transitions 2/272 dead transitions. [2022-11-18 18:49:52,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 272 transitions, 602 flow [2022-11-18 18:49:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:49:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:49:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2022-11-18 18:49:52,659 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9291521486643438 [2022-11-18 18:49:52,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2022-11-18 18:49:52,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2022-11-18 18:49:52,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:52,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2022-11-18 18:49:52,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states 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 18:49:52,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states 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 18:49:52,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states 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 18:49:52,685 INFO L175 Difference]: Start difference. First operand has 261 places, 284 transitions, 576 flow. Second operand 3 states and 800 transitions. [2022-11-18 18:49:52,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 272 transitions, 602 flow [2022-11-18 18:49:52,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 272 transitions, 602 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:49:52,708 INFO L231 Difference]: Finished difference. Result has 263 places, 262 transitions, 546 flow [2022-11-18 18:49:52,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=263, PETRI_TRANSITIONS=262} [2022-11-18 18:49:52,721 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 2 predicate places. [2022-11-18 18:49:52,722 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 262 transitions, 546 flow [2022-11-18 18:49:52,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 18:49:52,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:52,724 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:52,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:52,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:52,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:49:52,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:52,939 INFO L85 PathProgramCache]: Analyzing trace with hash 897686301, now seen corresponding path program 1 times [2022-11-18 18:49:52,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:52,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596730021] [2022-11-18 18:49:52,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:52,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:53,183 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 18:49:53,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:53,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596730021] [2022-11-18 18:49:53,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596730021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:53,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:53,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:49:53,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759665669] [2022-11-18 18:49:53,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:53,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:49:53,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:53,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:49:53,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:49:53,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 287 [2022-11-18 18:49:53,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 262 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states 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 18:49:53,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:53,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 287 [2022-11-18 18:49:53,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:53,287 INFO L130 PetriNetUnfolder]: 7/420 cut-off events. [2022-11-18 18:49:53,288 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-11-18 18:49:53,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 420 events. 7/420 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 947 event pairs, 0 based on Foata normal form. 2/389 useless extension candidates. Maximal degree in co-relation 341. Up to 22 conditions per place. [2022-11-18 18:49:53,290 INFO L137 encePairwiseOnDemand]: 282/287 looper letters, 17 selfloop transitions, 2 changer transitions 0/268 dead transitions. [2022-11-18 18:49:53,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 268 transitions, 596 flow [2022-11-18 18:49:53,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:49:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:49:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 781 transitions. [2022-11-18 18:49:53,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070847851335656 [2022-11-18 18:49:53,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 781 transitions. [2022-11-18 18:49:53,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 781 transitions. [2022-11-18 18:49:53,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:53,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 781 transitions. [2022-11-18 18:49:53,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states 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 18:49:53,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states 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 18:49:53,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states 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 18:49:53,301 INFO L175 Difference]: Start difference. First operand has 263 places, 262 transitions, 546 flow. Second operand 3 states and 781 transitions. [2022-11-18 18:49:53,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 268 transitions, 596 flow [2022-11-18 18:49:53,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 268 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:49:53,308 INFO L231 Difference]: Finished difference. Result has 263 places, 263 transitions, 560 flow [2022-11-18 18:49:53,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=560, PETRI_PLACES=263, PETRI_TRANSITIONS=263} [2022-11-18 18:49:53,309 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 2 predicate places. [2022-11-18 18:49:53,309 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 263 transitions, 560 flow [2022-11-18 18:49:53,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states 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 18:49:53,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:53,311 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] [2022-11-18 18:49:53,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:49:53,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:49:53,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:53,312 INFO L85 PathProgramCache]: Analyzing trace with hash -326552014, now seen corresponding path program 1 times [2022-11-18 18:49:53,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:53,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346807457] [2022-11-18 18:49:53,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:53,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:53,376 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:53,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092600945] [2022-11-18 18:49:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:53,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:53,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:53,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:53,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:49:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:53,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:49:53,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:53,719 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 18:49:53,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:53,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:53,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346807457] [2022-11-18 18:49:53,720 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:53,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092600945] [2022-11-18 18:49:53,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092600945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:53,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:53,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:49:53,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146074108] [2022-11-18 18:49:53,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:53,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:49:53,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:53,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:49:53,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:49:53,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-18 18:49:53,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 263 transitions, 560 flow. Second operand has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 18:49:53,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:53,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-18 18:49:53,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:53,866 INFO L130 PetriNetUnfolder]: 7/420 cut-off events. [2022-11-18 18:49:53,866 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-18 18:49:53,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 420 events. 7/420 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 951 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 370. Up to 30 conditions per place. [2022-11-18 18:49:53,869 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 23 selfloop transitions, 5 changer transitions 0/272 dead transitions. [2022-11-18 18:49:53,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 272 transitions, 634 flow [2022-11-18 18:49:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:49:53,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:49:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1269 transitions. [2022-11-18 18:49:53,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8843205574912892 [2022-11-18 18:49:53,873 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1269 transitions. [2022-11-18 18:49:53,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1269 transitions. [2022-11-18 18:49:53,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:53,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1269 transitions. [2022-11-18 18:49:53,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 253.8) internal successors, (1269), 5 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 18:49:53,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:53,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:53,883 INFO L175 Difference]: Start difference. First operand has 263 places, 263 transitions, 560 flow. Second operand 5 states and 1269 transitions. [2022-11-18 18:49:53,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 272 transitions, 634 flow [2022-11-18 18:49:53,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 272 transitions, 632 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:49:53,890 INFO L231 Difference]: Finished difference. Result has 270 places, 266 transitions, 592 flow [2022-11-18 18:49:53,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=592, PETRI_PLACES=270, PETRI_TRANSITIONS=266} [2022-11-18 18:49:53,893 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 9 predicate places. [2022-11-18 18:49:53,894 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 266 transitions, 592 flow [2022-11-18 18:49:53,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 18:49:53,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:53,895 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:53,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 18:49:54,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:54,105 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:49:54,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1533177195, now seen corresponding path program 1 times [2022-11-18 18:49:54,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:54,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5569901] [2022-11-18 18:49:54,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:54,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:54,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:54,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526888937] [2022-11-18 18:49:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:54,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:54,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:54,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:54,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:49:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:54,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:49:54,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:54,417 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 18:49:54,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:54,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:54,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5569901] [2022-11-18 18:49:54,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:54,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526888937] [2022-11-18 18:49:54,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526888937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:54,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:54,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:49:54,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548219504] [2022-11-18 18:49:54,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:54,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:49:54,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:54,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:49:54,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:49:54,421 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-18 18:49:54,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 266 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states 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 18:49:54,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:54,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-18 18:49:54,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:54,530 INFO L130 PetriNetUnfolder]: 7/416 cut-off events. [2022-11-18 18:49:54,530 INFO L131 PetriNetUnfolder]: For 36/37 co-relation queries the response was YES. [2022-11-18 18:49:54,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 416 events. 7/416 cut-off events. For 36/37 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 939 event pairs, 0 based on Foata normal form. 4/397 useless extension candidates. Maximal degree in co-relation 382. Up to 28 conditions per place. [2022-11-18 18:49:54,533 INFO L137 encePairwiseOnDemand]: 283/287 looper letters, 16 selfloop transitions, 5 changer transitions 0/265 dead transitions. [2022-11-18 18:49:54,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 265 transitions, 632 flow [2022-11-18 18:49:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:49:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:49:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1011 transitions. [2022-11-18 18:49:54,536 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8806620209059234 [2022-11-18 18:49:54,537 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1011 transitions. [2022-11-18 18:49:54,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1011 transitions. [2022-11-18 18:49:54,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:54,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1011 transitions. [2022-11-18 18:49:54,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states 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 18:49:54,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states 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 18:49:54,544 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states 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 18:49:54,545 INFO L175 Difference]: Start difference. First operand has 270 places, 266 transitions, 592 flow. Second operand 4 states and 1011 transitions. [2022-11-18 18:49:54,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 265 transitions, 632 flow [2022-11-18 18:49:54,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 265 transitions, 623 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:49:54,551 INFO L231 Difference]: Finished difference. Result has 270 places, 265 transitions, 594 flow [2022-11-18 18:49:54,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=594, PETRI_PLACES=270, PETRI_TRANSITIONS=265} [2022-11-18 18:49:54,552 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 9 predicate places. [2022-11-18 18:49:54,552 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 265 transitions, 594 flow [2022-11-18 18:49:54,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states 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 18:49:54,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:54,554 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:54,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:54,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:54,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:49:54,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:54,763 INFO L85 PathProgramCache]: Analyzing trace with hash -134957359, now seen corresponding path program 1 times [2022-11-18 18:49:54,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:54,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492701651] [2022-11-18 18:49:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:54,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:54,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:54,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117819460] [2022-11-18 18:49:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:54,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:54,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:54,812 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:54,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:49:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:54,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:49:54,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:55,112 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 18:49:55,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:55,204 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 18:49:55,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:55,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492701651] [2022-11-18 18:49:55,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:55,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117819460] [2022-11-18 18:49:55,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117819460] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:55,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:55,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:49:55,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718983582] [2022-11-18 18:49:55,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:55,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:49:55,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:55,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:49:55,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:55,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-18 18:49:55,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 265 transitions, 594 flow. Second operand has 8 states, 8 states have (on average 250.875) internal successors, (2007), 8 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states 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 18:49:55,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:55,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-18 18:49:55,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:55,417 INFO L130 PetriNetUnfolder]: 7/502 cut-off events. [2022-11-18 18:49:55,417 INFO L131 PetriNetUnfolder]: For 52/53 co-relation queries the response was YES. [2022-11-18 18:49:55,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 502 events. 7/502 cut-off events. For 52/53 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 699 event pairs, 0 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 509. Up to 22 conditions per place. [2022-11-18 18:49:55,420 INFO L137 encePairwiseOnDemand]: 280/287 looper letters, 29 selfloop transitions, 10 changer transitions 0/283 dead transitions. [2022-11-18 18:49:55,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 283 transitions, 726 flow [2022-11-18 18:49:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:49:55,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:49:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2273 transitions. [2022-11-18 18:49:55,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8799845141308555 [2022-11-18 18:49:55,426 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2273 transitions. [2022-11-18 18:49:55,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2273 transitions. [2022-11-18 18:49:55,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:55,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2273 transitions. [2022-11-18 18:49:55,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 252.55555555555554) internal successors, (2273), 9 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states 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 18:49:55,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 287.0) internal successors, (2870), 10 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states 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 18:49:55,442 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 287.0) internal successors, (2870), 10 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states 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 18:49:55,442 INFO L175 Difference]: Start difference. First operand has 270 places, 265 transitions, 594 flow. Second operand 9 states and 2273 transitions. [2022-11-18 18:49:55,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 283 transitions, 726 flow [2022-11-18 18:49:55,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 283 transitions, 713 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:49:55,450 INFO L231 Difference]: Finished difference. Result has 281 places, 269 transitions, 644 flow [2022-11-18 18:49:55,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=644, PETRI_PLACES=281, PETRI_TRANSITIONS=269} [2022-11-18 18:49:55,453 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 20 predicate places. [2022-11-18 18:49:55,454 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 269 transitions, 644 flow [2022-11-18 18:49:55,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 250.875) internal successors, (2007), 8 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states 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 18:49:55,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:55,456 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, 1, 1, 1, 1] [2022-11-18 18:49:55,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:55,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:55,663 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:49:55,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:55,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1827181646, now seen corresponding path program 1 times [2022-11-18 18:49:55,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:55,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148568611] [2022-11-18 18:49:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:55,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:55,701 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:55,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308255150] [2022-11-18 18:49:55,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:55,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:55,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:55,703 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:55,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:49:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:55,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:49:55,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:56,248 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 18:49:56,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:56,540 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 18:49:56,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:56,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148568611] [2022-11-18 18:49:56,541 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:56,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308255150] [2022-11-18 18:49:56,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308255150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:56,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:56,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 18:49:56,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085569071] [2022-11-18 18:49:56,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:56,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:49:56,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:56,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:49:56,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:49:56,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-18 18:49:56,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 269 transitions, 644 flow. Second operand has 14 states, 14 states have (on average 251.64285714285714) internal successors, (3523), 14 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states 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 18:49:56,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:56,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-18 18:49:56,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:56,886 INFO L130 PetriNetUnfolder]: 13/792 cut-off events. [2022-11-18 18:49:56,887 INFO L131 PetriNetUnfolder]: For 134/136 co-relation queries the response was YES. [2022-11-18 18:49:56,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 792 events. 13/792 cut-off events. For 134/136 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1980 event pairs, 0 based on Foata normal form. 4/750 useless extension candidates. Maximal degree in co-relation 767. Up to 19 conditions per place. [2022-11-18 18:49:56,891 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 37 selfloop transitions, 16 changer transitions 0/297 dead transitions. [2022-11-18 18:49:56,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 297 transitions, 860 flow [2022-11-18 18:49:56,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:49:56,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:49:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3775 transitions. [2022-11-18 18:49:56,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8768873403019745 [2022-11-18 18:49:56,899 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3775 transitions. [2022-11-18 18:49:56,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3775 transitions. [2022-11-18 18:49:56,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:56,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3775 transitions. [2022-11-18 18:49:56,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 251.66666666666666) internal successors, (3775), 15 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states 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 18:49:56,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states 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 18:49:56,962 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states 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 18:49:56,962 INFO L175 Difference]: Start difference. First operand has 281 places, 269 transitions, 644 flow. Second operand 15 states and 3775 transitions. [2022-11-18 18:49:56,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 297 transitions, 860 flow [2022-11-18 18:49:56,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 297 transitions, 842 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 18:49:56,970 INFO L231 Difference]: Finished difference. Result has 290 places, 273 transitions, 693 flow [2022-11-18 18:49:56,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=693, PETRI_PLACES=290, PETRI_TRANSITIONS=273} [2022-11-18 18:49:56,971 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 29 predicate places. [2022-11-18 18:49:56,972 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 273 transitions, 693 flow [2022-11-18 18:49:56,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 251.64285714285714) internal successors, (3523), 14 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states 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 18:49:56,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:56,974 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, 1, 1, 1] [2022-11-18 18:49:56,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 18:49:57,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:57,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:49:57,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:57,181 INFO L85 PathProgramCache]: Analyzing trace with hash 426036305, now seen corresponding path program 2 times [2022-11-18 18:49:57,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:57,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791613991] [2022-11-18 18:49:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:57,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:57,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:57,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536195963] [2022-11-18 18:49:57,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:49:57,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:57,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:57,221 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:57,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:49:57,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:49:57,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:49:57,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:49:57,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:57,608 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 18:49:57,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:57,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:57,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791613991] [2022-11-18 18:49:57,609 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:57,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536195963] [2022-11-18 18:49:57,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536195963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:57,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:57,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:49:57,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810906375] [2022-11-18 18:49:57,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:57,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:49:57,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:57,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:49:57,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:49:57,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-18 18:49:57,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 273 transitions, 693 flow. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states 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 18:49:57,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:57,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-18 18:49:57,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:57,836 INFO L130 PetriNetUnfolder]: 13/792 cut-off events. [2022-11-18 18:49:57,836 INFO L131 PetriNetUnfolder]: For 135/137 co-relation queries the response was YES. [2022-11-18 18:49:57,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 792 events. 13/792 cut-off events. For 135/137 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1976 event pairs, 0 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 773. Up to 50 conditions per place. [2022-11-18 18:49:57,840 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 29 selfloop transitions, 5 changer transitions 0/285 dead transitions. [2022-11-18 18:49:57,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 285 transitions, 785 flow [2022-11-18 18:49:57,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:49:57,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:49:57,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1260 transitions. [2022-11-18 18:49:57,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8780487804878049 [2022-11-18 18:49:57,844 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1260 transitions. [2022-11-18 18:49:57,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1260 transitions. [2022-11-18 18:49:57,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:57,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1260 transitions. [2022-11-18 18:49:57,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 18:49:57,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:57,853 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:57,853 INFO L175 Difference]: Start difference. First operand has 290 places, 273 transitions, 693 flow. Second operand 5 states and 1260 transitions. [2022-11-18 18:49:57,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 285 transitions, 785 flow [2022-11-18 18:49:57,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 285 transitions, 726 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-18 18:49:57,861 INFO L231 Difference]: Finished difference. Result has 285 places, 276 transitions, 668 flow [2022-11-18 18:49:57,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=668, PETRI_PLACES=285, PETRI_TRANSITIONS=276} [2022-11-18 18:49:57,862 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 24 predicate places. [2022-11-18 18:49:57,862 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 276 transitions, 668 flow [2022-11-18 18:49:57,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states 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 18:49:57,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:57,864 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, 1, 1, 1, 1] [2022-11-18 18:49:57,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:58,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:58,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:49:58,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:58,071 INFO L85 PathProgramCache]: Analyzing trace with hash 322224053, now seen corresponding path program 1 times [2022-11-18 18:49:58,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:58,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255446702] [2022-11-18 18:49:58,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:58,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:58,108 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:58,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165038556] [2022-11-18 18:49:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:58,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:58,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:58,110 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:58,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:49:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:58,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:49:58,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:58,581 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 18:49:58,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:58,820 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 18:49:58,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:58,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255446702] [2022-11-18 18:49:58,821 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:58,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165038556] [2022-11-18 18:49:58,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165038556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:58,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:58,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:49:58,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029033982] [2022-11-18 18:49:58,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:58,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:49:58,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:58,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:49:58,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:49:58,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-18 18:49:58,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 276 transitions, 668 flow. Second operand has 16 states, 16 states have (on average 251.6875) internal successors, (4027), 16 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states 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 18:49:58,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:58,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-18 18:49:58,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:59,274 INFO L130 PetriNetUnfolder]: 7/836 cut-off events. [2022-11-18 18:49:59,274 INFO L131 PetriNetUnfolder]: For 122/123 co-relation queries the response was YES. [2022-11-18 18:49:59,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 836 events. 7/836 cut-off events. For 122/123 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 711 event pairs, 0 based on Foata normal form. 8/825 useless extension candidates. Maximal degree in co-relation 1011. Up to 20 conditions per place. [2022-11-18 18:49:59,278 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 60 selfloop transitions, 22 changer transitions 0/329 dead transitions. [2022-11-18 18:49:59,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 329 transitions, 1025 flow [2022-11-18 18:49:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:49:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:49:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5293 transitions. [2022-11-18 18:49:59,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8782147005143521 [2022-11-18 18:49:59,287 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5293 transitions. [2022-11-18 18:49:59,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5293 transitions. [2022-11-18 18:49:59,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:59,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5293 transitions. [2022-11-18 18:49:59,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 252.04761904761904) internal successors, (5293), 21 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states 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 18:49:59,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 287.0) internal successors, (6314), 22 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states 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 18:49:59,314 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 287.0) internal successors, (6314), 22 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states 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 18:49:59,315 INFO L175 Difference]: Start difference. First operand has 285 places, 276 transitions, 668 flow. Second operand 21 states and 5293 transitions. [2022-11-18 18:49:59,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 329 transitions, 1025 flow [2022-11-18 18:49:59,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 329 transitions, 1015 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-18 18:49:59,322 INFO L231 Difference]: Finished difference. Result has 309 places, 285 transitions, 778 flow [2022-11-18 18:49:59,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=778, PETRI_PLACES=309, PETRI_TRANSITIONS=285} [2022-11-18 18:49:59,325 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 48 predicate places. [2022-11-18 18:49:59,325 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 285 transitions, 778 flow [2022-11-18 18:49:59,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 251.6875) internal successors, (4027), 16 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states 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 18:49:59,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:59,327 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] [2022-11-18 18:49:59,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 18:49:59,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 18:49:59,534 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:49:59,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1832840011, now seen corresponding path program 2 times [2022-11-18 18:49:59,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:59,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768256989] [2022-11-18 18:49:59,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:59,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:59,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:59,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424894884] [2022-11-18 18:49:59,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:49:59,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:59,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:59,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:59,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:49:59,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:49:59,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:49:59,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:49:59,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:00,392 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 18:50:00,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:00,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:00,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768256989] [2022-11-18 18:50:00,393 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:00,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424894884] [2022-11-18 18:50:00,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424894884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:00,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:00,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:50:00,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077814137] [2022-11-18 18:50:00,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:00,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:50:00,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:00,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:50:00,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:50:00,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-18 18:50:00,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 285 transitions, 778 flow. Second operand has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states 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 18:50:00,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:00,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-18 18:50:00,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:00,633 INFO L130 PetriNetUnfolder]: 7/834 cut-off events. [2022-11-18 18:50:00,634 INFO L131 PetriNetUnfolder]: For 186/187 co-relation queries the response was YES. [2022-11-18 18:50:00,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 834 events. 7/834 cut-off events. For 186/187 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 705 event pairs, 0 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 1012. Up to 80 conditions per place. [2022-11-18 18:50:00,637 INFO L137 encePairwiseOnDemand]: 283/287 looper letters, 18 selfloop transitions, 5 changer transitions 0/283 dead transitions. [2022-11-18 18:50:00,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 283 transitions, 814 flow [2022-11-18 18:50:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:50:00,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:50:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1001 transitions. [2022-11-18 18:50:00,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2022-11-18 18:50:00,641 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1001 transitions. [2022-11-18 18:50:00,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1001 transitions. [2022-11-18 18:50:00,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:00,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1001 transitions. [2022-11-18 18:50:00,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states 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 18:50:00,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states 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 18:50:00,647 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states 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 18:50:00,647 INFO L175 Difference]: Start difference. First operand has 309 places, 285 transitions, 778 flow. Second operand 4 states and 1001 transitions. [2022-11-18 18:50:00,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 283 transitions, 814 flow [2022-11-18 18:50:00,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 283 transitions, 791 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 18:50:00,683 INFO L231 Difference]: Finished difference. Result has 300 places, 283 transitions, 755 flow [2022-11-18 18:50:00,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=755, PETRI_PLACES=300, PETRI_TRANSITIONS=283} [2022-11-18 18:50:00,685 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 39 predicate places. [2022-11-18 18:50:00,685 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 283 transitions, 755 flow [2022-11-18 18:50:00,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states 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 18:50:00,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:00,686 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, 1, 1, 1, 1, 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 18:50:00,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:00,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:00,892 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:50:00,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:00,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1027237298, now seen corresponding path program 1 times [2022-11-18 18:50:00,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:00,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507028195] [2022-11-18 18:50:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:00,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:00,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552180388] [2022-11-18 18:50:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:00,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:00,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:00,953 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:00,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:50:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:01,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:50:01,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:02,016 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 18:50:02,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:02,755 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 18:50:02,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:02,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507028195] [2022-11-18 18:50:02,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:02,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552180388] [2022-11-18 18:50:02,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552180388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:02,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:50:02,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 18:50:02,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198218314] [2022-11-18 18:50:02,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:02,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:50:02,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:02,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:50:02,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:50:02,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-18 18:50:02,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 283 transitions, 755 flow. Second operand has 32 states, 32 states have (on average 252.125) internal successors, (8068), 32 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states 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 18:50:02,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:02,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-18 18:50:02,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:04,038 INFO L130 PetriNetUnfolder]: 7/1506 cut-off events. [2022-11-18 18:50:04,039 INFO L131 PetriNetUnfolder]: For 731/732 co-relation queries the response was YES. [2022-11-18 18:50:04,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 1506 events. 7/1506 cut-off events. For 731/732 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 744 event pairs, 0 based on Foata normal form. 16/1503 useless extension candidates. Maximal degree in co-relation 2126. Up to 38 conditions per place. [2022-11-18 18:50:04,044 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 124 selfloop transitions, 46 changer transitions 0/415 dead transitions. [2022-11-18 18:50:04,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 415 transitions, 1691 flow [2022-11-18 18:50:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 18:50:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 18:50:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 11337 transitions. [2022-11-18 18:50:04,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8778164924506388 [2022-11-18 18:50:04,068 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 11337 transitions. [2022-11-18 18:50:04,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 11337 transitions. [2022-11-18 18:50:04,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:04,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 11337 transitions. [2022-11-18 18:50:04,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 251.93333333333334) internal successors, (11337), 45 states have internal predecessors, (11337), 0 states have call successors, (0), 0 states 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 18:50:04,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 287.0) internal successors, (13202), 46 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states 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 18:50:04,129 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 287.0) internal successors, (13202), 46 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states 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 18:50:04,129 INFO L175 Difference]: Start difference. First operand has 300 places, 283 transitions, 755 flow. Second operand 45 states and 11337 transitions. [2022-11-18 18:50:04,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 415 transitions, 1691 flow [2022-11-18 18:50:04,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 415 transitions, 1681 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:50:04,142 INFO L231 Difference]: Finished difference. Result has 350 places, 308 transitions, 1068 flow [2022-11-18 18:50:04,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1068, PETRI_PLACES=350, PETRI_TRANSITIONS=308} [2022-11-18 18:50:04,143 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 89 predicate places. [2022-11-18 18:50:04,144 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 308 transitions, 1068 flow [2022-11-18 18:50:04,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 252.125) internal successors, (8068), 32 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states 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 18:50:04,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:04,147 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, 1, 1, 1, 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 18:50:04,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:04,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:50:04,356 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:50:04,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:04,356 INFO L85 PathProgramCache]: Analyzing trace with hash 287313842, now seen corresponding path program 2 times [2022-11-18 18:50:04,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:04,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123751480] [2022-11-18 18:50:04,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:04,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:04,471 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:04,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236426579] [2022-11-18 18:50:04,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:50:04,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:04,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:04,473 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:04,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:50:04,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:50:04,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:50:04,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:50:04,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:05,066 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 18:50:05,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:05,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123751480] [2022-11-18 18:50:05,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:05,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236426579] [2022-11-18 18:50:05,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236426579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:05,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:05,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:50:05,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287671500] [2022-11-18 18:50:05,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:05,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:50:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:05,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:50:05,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:50:05,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 287 [2022-11-18 18:50:05,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 308 transitions, 1068 flow. Second operand has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 18:50:05,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:05,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 287 [2022-11-18 18:50:05,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:05,667 INFO L130 PetriNetUnfolder]: 7/1494 cut-off events. [2022-11-18 18:50:05,667 INFO L131 PetriNetUnfolder]: For 742/761 co-relation queries the response was YES. [2022-11-18 18:50:05,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2113 conditions, 1494 events. 7/1494 cut-off events. For 742/761 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 681 event pairs, 0 based on Foata normal form. 3/1481 useless extension candidates. Maximal degree in co-relation 1955. Up to 38 conditions per place. [2022-11-18 18:50:05,671 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 11 selfloop transitions, 4 changer transitions 0/309 dead transitions. [2022-11-18 18:50:05,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 309 transitions, 1100 flow [2022-11-18 18:50:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:50:05,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:50:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1277 transitions. [2022-11-18 18:50:05,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8898954703832752 [2022-11-18 18:50:05,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1277 transitions. [2022-11-18 18:50:05,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1277 transitions. [2022-11-18 18:50:05,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:05,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1277 transitions. [2022-11-18 18:50:05,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.4) internal successors, (1277), 5 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states 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 18:50:05,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:05,682 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:05,682 INFO L175 Difference]: Start difference. First operand has 350 places, 308 transitions, 1068 flow. Second operand 5 states and 1277 transitions. [2022-11-18 18:50:05,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 309 transitions, 1100 flow [2022-11-18 18:50:05,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 309 transitions, 1043 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-18 18:50:05,694 INFO L231 Difference]: Finished difference. Result has 336 places, 307 transitions, 1021 flow [2022-11-18 18:50:05,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1021, PETRI_PLACES=336, PETRI_TRANSITIONS=307} [2022-11-18 18:50:05,696 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 75 predicate places. [2022-11-18 18:50:05,696 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 307 transitions, 1021 flow [2022-11-18 18:50:05,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 18:50:05,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:05,697 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, 1, 1, 1, 1, 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 18:50:05,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:05,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:50:05,903 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:50:05,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:05,904 INFO L85 PathProgramCache]: Analyzing trace with hash 316795095, now seen corresponding path program 1 times [2022-11-18 18:50:05,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:05,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166384439] [2022-11-18 18:50:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:05,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:06,013 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:06,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508392237] [2022-11-18 18:50:06,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:06,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:06,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:06,015 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:06,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:50:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:06,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:50:06,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:08,215 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 18:50:08,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:10,142 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 18:50:10,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:10,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166384439] [2022-11-18 18:50:10,143 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:10,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508392237] [2022-11-18 18:50:10,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508392237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:10,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:50:10,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-18 18:50:10,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469097442] [2022-11-18 18:50:10,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:10,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 18:50:10,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:10,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 18:50:10,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 18:50:10,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-18 18:50:10,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 307 transitions, 1021 flow. Second operand has 61 states, 61 states have (on average 252.37704918032787) internal successors, (15395), 61 states have internal predecessors, (15395), 0 states have call successors, (0), 0 states 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 18:50:10,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:10,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-18 18:50:10,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:13,916 INFO L130 PetriNetUnfolder]: 7/2754 cut-off events. [2022-11-18 18:50:13,916 INFO L131 PetriNetUnfolder]: For 4950/4951 co-relation queries the response was YES. [2022-11-18 18:50:13,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4517 conditions, 2754 events. 7/2754 cut-off events. For 4950/4951 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 756 event pairs, 0 based on Foata normal form. 30/2769 useless extension candidates. Maximal degree in co-relation 4361. Up to 96 conditions per place. [2022-11-18 18:50:13,924 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 244 selfloop transitions, 91 changer transitions 0/579 dead transitions. [2022-11-18 18:50:13,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 579 transitions, 3103 flow [2022-11-18 18:50:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 18:50:13,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-18 18:50:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 22669 transitions. [2022-11-18 18:50:14,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8776229190863337 [2022-11-18 18:50:14,013 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 22669 transitions. [2022-11-18 18:50:14,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 22669 transitions. [2022-11-18 18:50:14,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:14,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 22669 transitions. [2022-11-18 18:50:14,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 251.87777777777777) internal successors, (22669), 90 states have internal predecessors, (22669), 0 states have call successors, (0), 0 states 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 18:50:14,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 287.0) internal successors, (26117), 91 states have internal predecessors, (26117), 0 states have call successors, (0), 0 states 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 18:50:14,130 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 287.0) internal successors, (26117), 91 states have internal predecessors, (26117), 0 states have call successors, (0), 0 states 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 18:50:14,131 INFO L175 Difference]: Start difference. First operand has 336 places, 307 transitions, 1021 flow. Second operand 90 states and 22669 transitions. [2022-11-18 18:50:14,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 579 transitions, 3103 flow [2022-11-18 18:50:14,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 579 transitions, 3095 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:50:14,157 INFO L231 Difference]: Finished difference. Result has 437 places, 353 transitions, 1702 flow [2022-11-18 18:50:14,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1702, PETRI_PLACES=437, PETRI_TRANSITIONS=353} [2022-11-18 18:50:14,159 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 176 predicate places. [2022-11-18 18:50:14,159 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 353 transitions, 1702 flow [2022-11-18 18:50:14,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 252.37704918032787) internal successors, (15395), 61 states have internal predecessors, (15395), 0 states have call successors, (0), 0 states 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 18:50:14,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:14,165 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:14,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:14,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 18:50:14,376 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:50:14,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash -720689117, now seen corresponding path program 2 times [2022-11-18 18:50:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:14,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500245102] [2022-11-18 18:50:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:14,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:14,588 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:14,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179515617] [2022-11-18 18:50:14,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:50:14,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:14,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:14,594 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:14,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:50:15,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:50:15,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:50:15,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:50:15,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:15,495 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 18:50:15,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:15,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:15,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500245102] [2022-11-18 18:50:15,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:15,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179515617] [2022-11-18 18:50:15,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179515617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:15,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:15,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:50:15,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476457544] [2022-11-18 18:50:15,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:15,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:50:15,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:50:15,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:50:15,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 287 [2022-11-18 18:50:15,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 353 transitions, 1702 flow. Second operand has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 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 18:50:15,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:15,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 287 [2022-11-18 18:50:15,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:16,968 INFO L130 PetriNetUnfolder]: 7/2753 cut-off events. [2022-11-18 18:50:16,968 INFO L131 PetriNetUnfolder]: For 2968/2985 co-relation queries the response was YES. [2022-11-18 18:50:16,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 2753 events. 7/2753 cut-off events. For 2968/2985 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 753 event pairs, 0 based on Foata normal form. 1/2740 useless extension candidates. Maximal degree in co-relation 4037. Up to 96 conditions per place. [2022-11-18 18:50:16,975 INFO L137 encePairwiseOnDemand]: 283/287 looper letters, 9 selfloop transitions, 3 changer transitions 0/352 dead transitions. [2022-11-18 18:50:16,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 352 transitions, 1724 flow [2022-11-18 18:50:16,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:50:16,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:50:16,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1021 transitions. [2022-11-18 18:50:16,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8893728222996515 [2022-11-18 18:50:16,977 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1021 transitions. [2022-11-18 18:50:16,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1021 transitions. [2022-11-18 18:50:16,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:16,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1021 transitions. [2022-11-18 18:50:16,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states 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 18:50:16,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states 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 18:50:16,982 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states 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 18:50:16,982 INFO L175 Difference]: Start difference. First operand has 437 places, 353 transitions, 1702 flow. Second operand 4 states and 1021 transitions. [2022-11-18 18:50:16,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 352 transitions, 1724 flow [2022-11-18 18:50:17,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 352 transitions, 1605 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 18:50:17,014 INFO L231 Difference]: Finished difference. Result has 397 places, 352 transitions, 1587 flow [2022-11-18 18:50:17,015 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1587, PETRI_PLACES=397, PETRI_TRANSITIONS=352} [2022-11-18 18:50:17,015 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 136 predicate places. [2022-11-18 18:50:17,015 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 352 transitions, 1587 flow [2022-11-18 18:50:17,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 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 18:50:17,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:17,017 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, 1, 1, 1, 1, 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 18:50:17,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:17,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 18:50:17,223 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:50:17,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:17,224 INFO L85 PathProgramCache]: Analyzing trace with hash 719844686, now seen corresponding path program 1 times [2022-11-18 18:50:17,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:17,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762774655] [2022-11-18 18:50:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:17,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:17,413 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:17,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188968714] [2022-11-18 18:50:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:17,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:17,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:17,415 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:17,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:50:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:19,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 5238 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:50:19,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:21,283 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 18:50:21,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:23,095 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 18:50:23,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:23,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762774655] [2022-11-18 18:50:23,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:23,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188968714] [2022-11-18 18:50:23,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188968714] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:23,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:50:23,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:50:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076941298] [2022-11-18 18:50:23,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:23,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:50:23,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:23,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:50:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:50:23,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-18 18:50:23,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 352 transitions, 1587 flow. Second operand has 8 states, 8 states have (on average 248.75) internal successors, (1990), 8 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 18:50:23,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:23,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-18 18:50:23,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:25,819 INFO L130 PetriNetUnfolder]: 8/4059 cut-off events. [2022-11-18 18:50:25,820 INFO L131 PetriNetUnfolder]: For 4613/4614 co-relation queries the response was YES. [2022-11-18 18:50:25,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6591 conditions, 4059 events. 8/4059 cut-off events. For 4613/4614 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 564 event pairs, 0 based on Foata normal form. 3/4048 useless extension candidates. Maximal degree in co-relation 6421. Up to 187 conditions per place. [2022-11-18 18:50:25,829 INFO L137 encePairwiseOnDemand]: 280/287 looper letters, 38 selfloop transitions, 9 changer transitions 0/376 dead transitions. [2022-11-18 18:50:25,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 376 transitions, 1743 flow [2022-11-18 18:50:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:50:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:50:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2255 transitions. [2022-11-18 18:50:25,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2022-11-18 18:50:25,833 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2255 transitions. [2022-11-18 18:50:25,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2255 transitions. [2022-11-18 18:50:25,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:25,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2255 transitions. [2022-11-18 18:50:25,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.55555555555554) internal successors, (2255), 9 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states 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 18:50:25,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 287.0) internal successors, (2870), 10 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states 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 18:50:25,840 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 287.0) internal successors, (2870), 10 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states 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 18:50:25,840 INFO L175 Difference]: Start difference. First operand has 397 places, 352 transitions, 1587 flow. Second operand 9 states and 2255 transitions. [2022-11-18 18:50:25,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 376 transitions, 1743 flow [2022-11-18 18:50:25,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 376 transitions, 1737 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:50:25,881 INFO L231 Difference]: Finished difference. Result has 407 places, 356 transitions, 1637 flow [2022-11-18 18:50:25,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1637, PETRI_PLACES=407, PETRI_TRANSITIONS=356} [2022-11-18 18:50:25,883 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 146 predicate places. [2022-11-18 18:50:25,883 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 356 transitions, 1637 flow [2022-11-18 18:50:25,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 248.75) internal successors, (1990), 8 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 18:50:25,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:25,884 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, 1, 1, 1, 1] [2022-11-18 18:50:25,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-18 18:50:26,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:26,090 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:50:26,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:26,091 INFO L85 PathProgramCache]: Analyzing trace with hash 937444689, now seen corresponding path program 1 times [2022-11-18 18:50:26,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:26,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847876763] [2022-11-18 18:50:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:26,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:26,327 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:26,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870078525] [2022-11-18 18:50:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:26,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:26,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:26,329 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:26,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:50:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:31,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 5339 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:50:31,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:33,187 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 18:50:33,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:36,048 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 18:50:36,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:36,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847876763] [2022-11-18 18:50:36,049 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:36,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870078525] [2022-11-18 18:50:36,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870078525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:36,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:50:36,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 18:50:36,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917132406] [2022-11-18 18:50:36,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:36,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:50:36,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:36,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:50:36,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:50:36,056 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 287 [2022-11-18 18:50:36,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 356 transitions, 1637 flow. Second operand has 14 states, 14 states have (on average 240.35714285714286) internal successors, (3365), 14 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states 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 18:50:36,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:36,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 287 [2022-11-18 18:50:36,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:39,941 INFO L130 PetriNetUnfolder]: 8/4027 cut-off events. [2022-11-18 18:50:39,941 INFO L131 PetriNetUnfolder]: For 4801/4802 co-relation queries the response was YES. [2022-11-18 18:50:39,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7036 conditions, 4027 events. 8/4027 cut-off events. For 4801/4802 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 413 event pairs, 0 based on Foata normal form. 32/4045 useless extension candidates. Maximal degree in co-relation 6864. Up to 307 conditions per place. [2022-11-18 18:50:39,960 INFO L137 encePairwiseOnDemand]: 273/287 looper letters, 224 selfloop transitions, 144 changer transitions 0/596 dead transitions. [2022-11-18 18:50:39,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 596 transitions, 4497 flow [2022-11-18 18:50:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:50:39,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:50:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5743 transitions. [2022-11-18 18:50:39,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8337688734030198 [2022-11-18 18:50:39,970 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5743 transitions. [2022-11-18 18:50:39,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5743 transitions. [2022-11-18 18:50:39,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:39,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5743 transitions. [2022-11-18 18:50:39,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 239.29166666666666) internal successors, (5743), 24 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states 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 18:50:39,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 287.0) internal successors, (7175), 25 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states 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 18:50:39,995 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 287.0) internal successors, (7175), 25 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states 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 18:50:39,995 INFO L175 Difference]: Start difference. First operand has 407 places, 356 transitions, 1637 flow. Second operand 24 states and 5743 transitions. [2022-11-18 18:50:39,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 596 transitions, 4497 flow [2022-11-18 18:50:40,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 596 transitions, 4481 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 18:50:40,044 INFO L231 Difference]: Finished difference. Result has 431 places, 487 transitions, 3676 flow [2022-11-18 18:50:40,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3676, PETRI_PLACES=431, PETRI_TRANSITIONS=487} [2022-11-18 18:50:40,046 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 170 predicate places. [2022-11-18 18:50:40,046 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 487 transitions, 3676 flow [2022-11-18 18:50:40,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 240.35714285714286) internal successors, (3365), 14 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states 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 18:50:40,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:40,047 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, 1, 1, 1, 1] [2022-11-18 18:50:40,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:40,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:50:40,274 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:50:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:40,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1037707410, now seen corresponding path program 1 times [2022-11-18 18:50:40,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:40,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251751708] [2022-11-18 18:50:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:40,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:40,507 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:40,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818804398] [2022-11-18 18:50:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:40,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:40,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:40,519 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:40,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:50:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:46,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 5507 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:50:46,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:49,132 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 18:50:49,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:49,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:49,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251751708] [2022-11-18 18:50:49,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:49,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818804398] [2022-11-18 18:50:49,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818804398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:49,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:49,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:49,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563068921] [2022-11-18 18:50:49,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:49,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:50:49,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:49,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:50:49,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:50:49,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 287 [2022-11-18 18:50:49,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 487 transitions, 3676 flow. Second operand has 11 states, 11 states have (on average 239.45454545454547) internal successors, (2634), 11 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states 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 18:50:49,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:49,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 287 [2022-11-18 18:50:49,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:52,271 INFO L130 PetriNetUnfolder]: 8/3970 cut-off events. [2022-11-18 18:50:52,271 INFO L131 PetriNetUnfolder]: For 7140/7141 co-relation queries the response was YES. [2022-11-18 18:50:52,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7508 conditions, 3970 events. 8/3970 cut-off events. For 7140/7141 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 301 event pairs, 0 based on Foata normal form. 57/4013 useless extension candidates. Maximal degree in co-relation 7330. Up to 370 conditions per place. [2022-11-18 18:50:52,284 INFO L137 encePairwiseOnDemand]: 277/287 looper letters, 208 selfloop transitions, 139 changer transitions 0/575 dead transitions. [2022-11-18 18:50:52,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 575 transitions, 5152 flow [2022-11-18 18:50:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:50:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:50:52,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3591 transitions. [2022-11-18 18:50:52,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8341463414634146 [2022-11-18 18:50:52,296 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3591 transitions. [2022-11-18 18:50:52,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3591 transitions. [2022-11-18 18:50:52,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:52,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3591 transitions. [2022-11-18 18:50:52,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 239.4) internal successors, (3591), 15 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states 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 18:50:52,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states 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 18:50:52,308 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states 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 18:50:52,308 INFO L175 Difference]: Start difference. First operand has 431 places, 487 transitions, 3676 flow. Second operand 15 states and 3591 transitions. [2022-11-18 18:50:52,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 575 transitions, 5152 flow [2022-11-18 18:50:52,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 575 transitions, 5120 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-18 18:50:52,358 INFO L231 Difference]: Finished difference. Result has 438 places, 544 transitions, 4855 flow [2022-11-18 18:50:52,359 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=3625, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4855, PETRI_PLACES=438, PETRI_TRANSITIONS=544} [2022-11-18 18:50:52,359 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 177 predicate places. [2022-11-18 18:50:52,360 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 544 transitions, 4855 flow [2022-11-18 18:50:52,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 239.45454545454547) internal successors, (2634), 11 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states 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 18:50:52,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:52,361 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, 1, 1, 1, 1] [2022-11-18 18:50:52,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:52,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:50:52,574 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:50:52,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash -973559944, now seen corresponding path program 2 times [2022-11-18 18:50:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:52,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569640898] [2022-11-18 18:50:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:52,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:52,946 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:52,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056697000] [2022-11-18 18:50:52,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:50:52,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:52,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:52,948 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:52,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:52:31,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:52:31,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:52:31,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 10566 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:52:31,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:52:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 5109 proven. 0 refuted. 0 times theorem prover too weak. 72708 trivial. 0 not checked. [2022-11-18 18:52:32,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:52:32,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:52:32,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569640898] [2022-11-18 18:52:32,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:52:32,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056697000] [2022-11-18 18:52:32,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056697000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:52:32,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:52:32,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:52:32,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782582347] [2022-11-18 18:52:32,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:52:32,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:52:32,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:52:32,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:52:32,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:52:32,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 287 [2022-11-18 18:52:32,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 544 transitions, 4855 flow. Second operand has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states 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 18:52:32,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:52:32,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 287 [2022-11-18 18:52:32,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:52:36,597 INFO L130 PetriNetUnfolder]: 8/3942 cut-off events. [2022-11-18 18:52:36,597 INFO L131 PetriNetUnfolder]: For 8276/8277 co-relation queries the response was YES. [2022-11-18 18:52:36,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7608 conditions, 3942 events. 8/3942 cut-off events. For 8276/8277 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 273 event pairs, 0 based on Foata normal form. 28/3956 useless extension candidates. Maximal degree in co-relation 7428. Up to 423 conditions per place. [2022-11-18 18:52:36,619 INFO L137 encePairwiseOnDemand]: 278/287 looper letters, 32 selfloop transitions, 292 changer transitions 0/557 dead transitions. [2022-11-18 18:52:36,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 557 transitions, 5531 flow [2022-11-18 18:52:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:52:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:52:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2923 transitions. [2022-11-18 18:52:36,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8487224157955865 [2022-11-18 18:52:36,625 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2923 transitions. [2022-11-18 18:52:36,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2923 transitions. [2022-11-18 18:52:36,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:52:36,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2923 transitions. [2022-11-18 18:52:36,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 243.58333333333334) internal successors, (2923), 12 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states 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 18:52:36,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 287.0) internal successors, (3731), 13 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states 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 18:52:36,641 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 287.0) internal successors, (3731), 13 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states 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 18:52:36,641 INFO L175 Difference]: Start difference. First operand has 438 places, 544 transitions, 4855 flow. Second operand 12 states and 2923 transitions. [2022-11-18 18:52:36,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 557 transitions, 5531 flow [2022-11-18 18:52:36,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 557 transitions, 5355 flow, removed 59 selfloop flow, removed 9 redundant places. [2022-11-18 18:52:36,703 INFO L231 Difference]: Finished difference. Result has 440 places, 544 transitions, 5361 flow [2022-11-18 18:52:36,704 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=4667, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5361, PETRI_PLACES=440, PETRI_TRANSITIONS=544} [2022-11-18 18:52:36,705 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 179 predicate places. [2022-11-18 18:52:36,705 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 544 transitions, 5361 flow [2022-11-18 18:52:36,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states 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 18:52:36,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:52:36,707 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, 1, 1, 1, 1, 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 18:52:36,922 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2022-11-18 18:52:36,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 137 [2022-11-18 18:52:36,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:52:36,988 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:52:36,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:52:36,990 INFO L85 PathProgramCache]: Analyzing trace with hash -245687629, now seen corresponding path program 1 times [2022-11-18 18:52:36,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:52:36,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245559656] [2022-11-18 18:52:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:52:36,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:52:37,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:52:37,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864854824] [2022-11-18 18:52:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:52:37,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:52:37,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:52:37,491 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:52:37,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 18:52:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:42,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 15359 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:52:42,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:52:49,697 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 18:52:49,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:53:01,896 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 18:53:01,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:53:01,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245559656] [2022-11-18 18:53:01,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:53:01,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864854824] [2022-11-18 18:53:01,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864854824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:53:01,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:53:01,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:53:01,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145918529] [2022-11-18 18:53:01,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:53:01,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:53:01,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:53:01,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:53:01,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:53:01,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-18 18:53:01,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 544 transitions, 5361 flow. Second operand has 16 states, 16 states have (on average 249.875) internal successors, (3998), 16 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states 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 18:53:01,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:53:01,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-18 18:53:01,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:53:16,515 INFO L130 PetriNetUnfolder]: 12/8930 cut-off events. [2022-11-18 18:53:16,515 INFO L131 PetriNetUnfolder]: For 21757/21758 co-relation queries the response was YES. [2022-11-18 18:53:16,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17094 conditions, 8930 events. 12/8930 cut-off events. For 21757/21758 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 277 event pairs, 0 based on Foata normal form. 4/8920 useless extension candidates. Maximal degree in co-relation 16914. Up to 336 conditions per place. [2022-11-18 18:53:16,550 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 74 selfloop transitions, 21 changer transitions 0/612 dead transitions. [2022-11-18 18:53:16,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 612 transitions, 5831 flow [2022-11-18 18:53:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:53:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:53:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5239 transitions. [2022-11-18 18:53:16,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.869255019080803 [2022-11-18 18:53:16,557 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5239 transitions. [2022-11-18 18:53:16,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5239 transitions. [2022-11-18 18:53:16,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:53:16,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5239 transitions. [2022-11-18 18:53:16,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 249.47619047619048) internal successors, (5239), 21 states have internal predecessors, (5239), 0 states have call successors, (0), 0 states 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 18:53:16,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 287.0) internal successors, (6314), 22 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states 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 18:53:16,573 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 287.0) internal successors, (6314), 22 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states 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 18:53:16,573 INFO L175 Difference]: Start difference. First operand has 440 places, 544 transitions, 5361 flow. Second operand 21 states and 5239 transitions. [2022-11-18 18:53:16,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 612 transitions, 5831 flow [2022-11-18 18:53:16,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 612 transitions, 5431 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-18 18:53:16,665 INFO L231 Difference]: Finished difference. Result has 456 places, 557 transitions, 5145 flow [2022-11-18 18:53:16,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=4973, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5145, PETRI_PLACES=456, PETRI_TRANSITIONS=557} [2022-11-18 18:53:16,666 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 195 predicate places. [2022-11-18 18:53:16,666 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 557 transitions, 5145 flow [2022-11-18 18:53:16,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 249.875) internal successors, (3998), 16 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states 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 18:53:16,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:53:16,670 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, 1, 1, 1, 1, 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 18:53:16,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:16,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:53:16,898 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:53:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:16,900 INFO L85 PathProgramCache]: Analyzing trace with hash -5566729, now seen corresponding path program 2 times [2022-11-18 18:53:16,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:53:16,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544080904] [2022-11-18 18:53:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:16,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:53:18,152 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:53:18,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641087686] [2022-11-18 18:53:18,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:53:18,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:53:18,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:53:18,154 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:53:18,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 18:53:28,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:53:28,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:53:28,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 35599 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:53:28,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 901563 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125060 trivial. 0 not checked. [2022-11-18 18:53:44,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:54:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 901563 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125060 trivial. 0 not checked. [2022-11-18 18:54:02,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:54:02,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544080904] [2022-11-18 18:54:02,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:54:02,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641087686] [2022-11-18 18:54:02,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641087686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:54:02,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:54:02,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-18 18:54:02,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175506677] [2022-11-18 18:54:02,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:54:02,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 18:54:02,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:54:02,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 18:54:02,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:54:02,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-18 18:54:02,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 557 transitions, 5145 flow. Second operand has 21 states, 21 states have (on average 250.42857142857142) internal successors, (5259), 21 states have internal predecessors, (5259), 0 states have call successors, (0), 0 states 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 18:54:02,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:54:02,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-18 18:54:02,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:54:33,668 INFO L130 PetriNetUnfolder]: 15/12671 cut-off events. [2022-11-18 18:54:33,668 INFO L131 PetriNetUnfolder]: For 29184/29185 co-relation queries the response was YES. [2022-11-18 18:54:33,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23740 conditions, 12671 events. 15/12671 cut-off events. For 29184/29185 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 279 event pairs, 0 based on Foata normal form. 3/12660 useless extension candidates. Maximal degree in co-relation 23556. Up to 480 conditions per place. [2022-11-18 18:54:33,727 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 104 selfloop transitions, 30 changer transitions 0/651 dead transitions. [2022-11-18 18:54:33,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 651 transitions, 5793 flow [2022-11-18 18:54:33,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:54:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 18:54:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7479 transitions. [2022-11-18 18:54:33,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8686411149825783 [2022-11-18 18:54:33,735 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7479 transitions. [2022-11-18 18:54:33,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7479 transitions. [2022-11-18 18:54:33,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:54:33,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7479 transitions. [2022-11-18 18:54:33,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 249.3) internal successors, (7479), 30 states have internal predecessors, (7479), 0 states have call successors, (0), 0 states 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 18:54:33,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 287.0) internal successors, (8897), 31 states have internal predecessors, (8897), 0 states have call successors, (0), 0 states 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 18:54:33,756 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 287.0) internal successors, (8897), 31 states have internal predecessors, (8897), 0 states have call successors, (0), 0 states 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 18:54:33,757 INFO L175 Difference]: Start difference. First operand has 456 places, 557 transitions, 5145 flow. Second operand 30 states and 7479 transitions. [2022-11-18 18:54:33,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 651 transitions, 5793 flow [2022-11-18 18:54:33,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 651 transitions, 5763 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-11-18 18:54:33,872 INFO L231 Difference]: Finished difference. Result has 482 places, 567 transitions, 5306 flow [2022-11-18 18:54:33,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=5121, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5306, PETRI_PLACES=482, PETRI_TRANSITIONS=567} [2022-11-18 18:54:33,873 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 221 predicate places. [2022-11-18 18:54:33,873 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 567 transitions, 5306 flow [2022-11-18 18:54:33,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 250.42857142857142) internal successors, (5259), 21 states have internal predecessors, (5259), 0 states have call successors, (0), 0 states 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 18:54:33,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:54:33,878 INFO L209 CegarLoopForPetriNet]: trace histogram [300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:54:33,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 18:54:34,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:54:34,095 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 18:54:34,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:54:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1600032458, now seen corresponding path program 3 times [2022-11-18 18:54:34,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:54:34,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276399664] [2022-11-18 18:54:34,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:54:34,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:54:35,901 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:54:35,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602637561] [2022-11-18 18:54:35,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:54:35,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:54:35,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:54:35,907 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:54:35,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e68e2db-aa95-413c-9436-2b0b97fa3ecb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process