./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_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_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/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_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/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_42235836-f111-4100-85b1-74f62233f9eb/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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- 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 20:08:11,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:08:11,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:08:11,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:08:11,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:08:11,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:08:11,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:08:11,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:08:11,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:08:11,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:08:11,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:08:11,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:08:11,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:08:11,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:08:11,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:08:11,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:08:11,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:08:11,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:08:11,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:08:11,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:08:11,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:08:11,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:08:11,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:08:11,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:08:11,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:08:11,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:08:11,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:08:11,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:08:11,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:08:11,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:08:11,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:08:11,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:08:11,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:08:11,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:08:11,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:08:11,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:08:11,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:08:11,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:08:11,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:08:11,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:08:11,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:08:11,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:08:11,236 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:08:11,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:08:11,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:08:11,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:08:11,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:08:11,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:08:11,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:08:11,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:08:11,240 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:08:11,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:08:11,240 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:08:11,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:08:11,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:08:11,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:08:11,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:08:11,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:08:11,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:08:11,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:08:11,243 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:08:11,243 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:08:11,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:08:11,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:08:11,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:08:11,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:08:11,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:08:11,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:08:11,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:08:11,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:08:11,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:08:11,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:08:11,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:08:11,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:08:11,247 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:08:11,247 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:08:11,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:08:11,248 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_42235836-f111-4100-85b1-74f62233f9eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2022-11-18 20:08:11,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:08:11,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:08:11,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:08:11,562 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:08:11,563 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:08:11,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-11-18 20:08:11,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/data/c3bae3e0c/5d62fbc39d6e4803bc266fd5e04e4ba7/FLAG57d8dd2cf [2022-11-18 20:08:12,344 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:08:12,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-11-18 20:08:12,376 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/data/c3bae3e0c/5d62fbc39d6e4803bc266fd5e04e4ba7/FLAG57d8dd2cf [2022-11-18 20:08:12,617 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/data/c3bae3e0c/5d62fbc39d6e4803bc266fd5e04e4ba7 [2022-11-18 20:08:12,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:08:12,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:08:12,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:08:12,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:08:12,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:08:12,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:08:12" (1/1) ... [2022-11-18 20:08:12,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0966ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:12, skipping insertion in model container [2022-11-18 20:08:12,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:08:12" (1/1) ... [2022-11-18 20:08:12,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:08:12,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:08:13,220 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_42235836-f111-4100-85b1-74f62233f9eb/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-11-18 20:08:13,237 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:08:13,239 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:08:13,241 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:08:13,242 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:08:13,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:08:13,313 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:08:13,367 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_42235836-f111-4100-85b1-74f62233f9eb/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-11-18 20:08:13,370 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:08:13,370 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:08:13,370 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:08:13,379 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:08:13,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:08:13,459 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:08:13,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13 WrapperNode [2022-11-18 20:08:13,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:08:13,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:08:13,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:08:13,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:08:13,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13" (1/1) ... [2022-11-18 20:08:13,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13" (1/1) ... [2022-11-18 20:08:13,543 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-11-18 20:08:13,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:08:13,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:08:13,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:08:13,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:08:13,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13" (1/1) ... [2022-11-18 20:08:13,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13" (1/1) ... [2022-11-18 20:08:13,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13" (1/1) ... [2022-11-18 20:08:13,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13" (1/1) ... [2022-11-18 20:08:13,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13" (1/1) ... [2022-11-18 20:08:13,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13" (1/1) ... [2022-11-18 20:08:13,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13" (1/1) ... [2022-11-18 20:08:13,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13" (1/1) ... [2022-11-18 20:08:13,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:08:13,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:08:13,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:08:13,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:08:13,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13" (1/1) ... [2022-11-18 20:08:13,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:08:13,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:13,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:08:13,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:08:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:08:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:08:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:08:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:08:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:08:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:08:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:08:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:08:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:08:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:08:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:08:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:08:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:08:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:08:13,703 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 20:08:13,876 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:08:13,879 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:08:14,407 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:08:14,418 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:08:14,427 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-18 20:08:14,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:08:14 BoogieIcfgContainer [2022-11-18 20:08:14,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:08:14,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:08:14,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:08:14,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:08:14,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:08:12" (1/3) ... [2022-11-18 20:08:14,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d566ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:08:14, skipping insertion in model container [2022-11-18 20:08:14,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:13" (2/3) ... [2022-11-18 20:08:14,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d566ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:08:14, skipping insertion in model container [2022-11-18 20:08:14,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:08:14" (3/3) ... [2022-11-18 20:08:14,446 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2022-11-18 20:08:14,456 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:08:14,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:08:14,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 20:08:14,468 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:08:14,623 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:08:14,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 229 transitions, 466 flow [2022-11-18 20:08:14,823 INFO L130 PetriNetUnfolder]: 26/246 cut-off events. [2022-11-18 20:08:14,826 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-18 20:08:14,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 26/246 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 699 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 126. Up to 4 conditions per place. [2022-11-18 20:08:14,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 229 transitions, 466 flow [2022-11-18 20:08:14,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 226 transitions, 460 flow [2022-11-18 20:08:14,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:08:14,869 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;@5b2bfaeb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:08:14,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-18 20:08:14,882 INFO L130 PetriNetUnfolder]: 4/65 cut-off events. [2022-11-18 20:08:14,882 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:08:14,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:14,883 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] [2022-11-18 20:08:14,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:14,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:14,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1492248910, now seen corresponding path program 1 times [2022-11-18 20:08:14,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:14,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125658866] [2022-11-18 20:08:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:14,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:15,052 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:15,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951981309] [2022-11-18 20:08:15,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:15,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:15,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:15,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:15,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:08:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:15,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:08:15,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:15,293 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 20:08:15,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:15,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:15,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125658866] [2022-11-18 20:08:15,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:15,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951981309] [2022-11-18 20:08:15,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951981309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:15,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:15,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:08:15,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112478383] [2022-11-18 20:08:15,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:15,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:08:15,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:15,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:08:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:08:15,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 229 [2022-11-18 20:08:15,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 226 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states 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 20:08:15,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:15,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 229 [2022-11-18 20:08:15,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:15,495 INFO L130 PetriNetUnfolder]: 6/282 cut-off events. [2022-11-18 20:08:15,495 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 20:08:15,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 282 events. 6/282 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 818 event pairs, 0 based on Foata normal form. 20/271 useless extension candidates. Maximal degree in co-relation 188. Up to 17 conditions per place. [2022-11-18 20:08:15,499 INFO L137 encePairwiseOnDemand]: 206/229 looper letters, 23 selfloop transitions, 2 changer transitions 0/216 dead transitions. [2022-11-18 20:08:15,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 216 transitions, 490 flow [2022-11-18 20:08:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:08:15,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:08:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2022-11-18 20:08:15,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9170305676855895 [2022-11-18 20:08:15,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2022-11-18 20:08:15,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2022-11-18 20:08:15,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:15,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2022-11-18 20:08:15,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 20:08:15,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 20:08:15,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 20:08:15,542 INFO L175 Difference]: Start difference. First operand has 206 places, 226 transitions, 460 flow. Second operand 3 states and 630 transitions. [2022-11-18 20:08:15,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 216 transitions, 490 flow [2022-11-18 20:08:15,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 216 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:08:15,555 INFO L231 Difference]: Finished difference. Result has 208 places, 208 transitions, 438 flow [2022-11-18 20:08:15,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=208, PETRI_TRANSITIONS=208} [2022-11-18 20:08:15,566 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 2 predicate places. [2022-11-18 20:08:15,567 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 208 transitions, 438 flow [2022-11-18 20:08:15,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states 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 20:08:15,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:15,569 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] [2022-11-18 20:08:15,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:08:15,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 20:08:15,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash 984923365, now seen corresponding path program 1 times [2022-11-18 20:08:15,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:15,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60502182] [2022-11-18 20:08:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:15,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:16,025 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 20:08:16,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:16,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60502182] [2022-11-18 20:08:16,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60502182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:16,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:16,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:16,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857496627] [2022-11-18 20:08:16,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:16,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:08:16,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:16,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:08:16,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:08:16,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 229 [2022-11-18 20:08:16,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 208 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 20:08:16,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:16,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 229 [2022-11-18 20:08:16,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:16,162 INFO L130 PetriNetUnfolder]: 6/366 cut-off events. [2022-11-18 20:08:16,162 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-18 20:08:16,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 366 events. 6/366 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 806 event pairs, 0 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 287. Up to 22 conditions per place. [2022-11-18 20:08:16,165 INFO L137 encePairwiseOnDemand]: 224/229 looper letters, 17 selfloop transitions, 2 changer transitions 0/214 dead transitions. [2022-11-18 20:08:16,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 214 transitions, 488 flow [2022-11-18 20:08:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:08:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:08:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2022-11-18 20:08:16,171 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8922852983988355 [2022-11-18 20:08:16,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2022-11-18 20:08:16,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2022-11-18 20:08:16,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:16,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2022-11-18 20:08:16,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states 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 20:08:16,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 20:08:16,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 20:08:16,179 INFO L175 Difference]: Start difference. First operand has 208 places, 208 transitions, 438 flow. Second operand 3 states and 613 transitions. [2022-11-18 20:08:16,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 214 transitions, 488 flow [2022-11-18 20:08:16,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 214 transitions, 486 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:08:16,190 INFO L231 Difference]: Finished difference. Result has 210 places, 209 transitions, 452 flow [2022-11-18 20:08:16,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=452, PETRI_PLACES=210, PETRI_TRANSITIONS=209} [2022-11-18 20:08:16,192 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 4 predicate places. [2022-11-18 20:08:16,192 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 209 transitions, 452 flow [2022-11-18 20:08:16,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 20:08:16,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:16,194 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:16,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:08:16,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:16,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:16,195 INFO L85 PathProgramCache]: Analyzing trace with hash -710055353, now seen corresponding path program 1 times [2022-11-18 20:08:16,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:16,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243936429] [2022-11-18 20:08:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:16,266 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:16,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163237437] [2022-11-18 20:08:16,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:16,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:16,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:16,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:16,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:08:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:16,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:08:16,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:16,602 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 20:08:16,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:16,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:16,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243936429] [2022-11-18 20:08:16,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:16,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163237437] [2022-11-18 20:08:16,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163237437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:16,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:16,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:16,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441790639] [2022-11-18 20:08:16,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:16,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:16,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:16,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:16,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:16,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-18 20:08:16,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 209 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 20:08:16,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:16,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-18 20:08:16,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:16,722 INFO L130 PetriNetUnfolder]: 6/366 cut-off events. [2022-11-18 20:08:16,722 INFO L131 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2022-11-18 20:08:16,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 366 events. 6/366 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 807 event pairs, 0 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 316. Up to 30 conditions per place. [2022-11-18 20:08:16,724 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 23 selfloop transitions, 5 changer transitions 0/218 dead transitions. [2022-11-18 20:08:16,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 218 transitions, 526 flow [2022-11-18 20:08:16,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:08:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 989 transitions. [2022-11-18 20:08:16,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8637554585152838 [2022-11-18 20:08:16,728 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 989 transitions. [2022-11-18 20:08:16,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 989 transitions. [2022-11-18 20:08:16,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:16,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 989 transitions. [2022-11-18 20:08:16,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states 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 20:08:16,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 20:08:16,735 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 20:08:16,736 INFO L175 Difference]: Start difference. First operand has 210 places, 209 transitions, 452 flow. Second operand 5 states and 989 transitions. [2022-11-18 20:08:16,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 218 transitions, 526 flow [2022-11-18 20:08:16,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 218 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:08:16,741 INFO L231 Difference]: Finished difference. Result has 217 places, 212 transitions, 484 flow [2022-11-18 20:08:16,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=217, PETRI_TRANSITIONS=212} [2022-11-18 20:08:16,742 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 11 predicate places. [2022-11-18 20:08:16,743 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 212 transitions, 484 flow [2022-11-18 20:08:16,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 20:08:16,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:16,744 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:16,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:16,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 20:08:16,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:16,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:16,966 INFO L85 PathProgramCache]: Analyzing trace with hash -536879049, now seen corresponding path program 1 times [2022-11-18 20:08:16,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:16,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912613640] [2022-11-18 20:08:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:16,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:17,009 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:17,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582478220] [2022-11-18 20:08:17,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:17,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:17,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:17,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:17,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:08:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:17,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:08:17,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:17,299 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 20:08:17,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:17,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:17,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912613640] [2022-11-18 20:08:17,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:17,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582478220] [2022-11-18 20:08:17,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582478220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:17,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:17,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:17,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965858419] [2022-11-18 20:08:17,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:17,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:17,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:17,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:17,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:17,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-18 20:08:17,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 212 transitions, 484 flow. Second operand has 4 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states 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 20:08:17,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:17,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-18 20:08:17,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:17,433 INFO L130 PetriNetUnfolder]: 6/362 cut-off events. [2022-11-18 20:08:17,434 INFO L131 PetriNetUnfolder]: For 35/36 co-relation queries the response was YES. [2022-11-18 20:08:17,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 362 events. 6/362 cut-off events. For 35/36 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 792 event pairs, 0 based on Foata normal form. 4/344 useless extension candidates. Maximal degree in co-relation 328. Up to 28 conditions per place. [2022-11-18 20:08:17,439 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 16 selfloop transitions, 5 changer transitions 0/211 dead transitions. [2022-11-18 20:08:17,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 211 transitions, 524 flow [2022-11-18 20:08:17,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:08:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:08:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 787 transitions. [2022-11-18 20:08:17,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8591703056768559 [2022-11-18 20:08:17,442 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 787 transitions. [2022-11-18 20:08:17,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 787 transitions. [2022-11-18 20:08:17,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:17,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 787 transitions. [2022-11-18 20:08:17,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states 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 20:08:17,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 20:08:17,447 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 20:08:17,448 INFO L175 Difference]: Start difference. First operand has 217 places, 212 transitions, 484 flow. Second operand 4 states and 787 transitions. [2022-11-18 20:08:17,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 211 transitions, 524 flow [2022-11-18 20:08:17,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 211 transitions, 515 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:08:17,454 INFO L231 Difference]: Finished difference. Result has 217 places, 211 transitions, 486 flow [2022-11-18 20:08:17,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=486, PETRI_PLACES=217, PETRI_TRANSITIONS=211} [2022-11-18 20:08:17,456 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 11 predicate places. [2022-11-18 20:08:17,456 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 211 transitions, 486 flow [2022-11-18 20:08:17,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states 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 20:08:17,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:17,458 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 20:08:17,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:17,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:17,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:17,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:17,665 INFO L85 PathProgramCache]: Analyzing trace with hash -52392030, now seen corresponding path program 1 times [2022-11-18 20:08:17,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:17,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339775303] [2022-11-18 20:08:17,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:17,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:17,704 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:17,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137221597] [2022-11-18 20:08:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:17,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:17,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:17,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:17,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:08:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:17,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:08:17,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:17,968 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 20:08:17,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:18,059 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 20:08:18,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:18,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339775303] [2022-11-18 20:08:18,060 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:18,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137221597] [2022-11-18 20:08:18,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137221597] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:18,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:08:18,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:08:18,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339618431] [2022-11-18 20:08:18,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:18,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:08:18,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:18,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:08:18,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:18,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-18 20:08:18,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 211 transitions, 486 flow. Second operand has 8 states, 8 states have (on average 194.875) internal successors, (1559), 8 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states 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 20:08:18,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:18,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-18 20:08:18,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:18,260 INFO L130 PetriNetUnfolder]: 6/448 cut-off events. [2022-11-18 20:08:18,260 INFO L131 PetriNetUnfolder]: For 51/52 co-relation queries the response was YES. [2022-11-18 20:08:18,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 448 events. 6/448 cut-off events. For 51/52 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 541 event pairs, 0 based on Foata normal form. 6/432 useless extension candidates. Maximal degree in co-relation 455. Up to 22 conditions per place. [2022-11-18 20:08:18,262 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 29 selfloop transitions, 10 changer transitions 0/229 dead transitions. [2022-11-18 20:08:18,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 229 transitions, 618 flow [2022-11-18 20:08:18,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:08:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:08:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1769 transitions. [2022-11-18 20:08:18,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8583212032993692 [2022-11-18 20:08:18,267 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1769 transitions. [2022-11-18 20:08:18,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1769 transitions. [2022-11-18 20:08:18,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:18,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1769 transitions. [2022-11-18 20:08:18,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 196.55555555555554) internal successors, (1769), 9 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states 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 20:08:18,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states 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 20:08:18,280 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states 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 20:08:18,280 INFO L175 Difference]: Start difference. First operand has 217 places, 211 transitions, 486 flow. Second operand 9 states and 1769 transitions. [2022-11-18 20:08:18,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 229 transitions, 618 flow [2022-11-18 20:08:18,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 605 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:08:18,288 INFO L231 Difference]: Finished difference. Result has 228 places, 215 transitions, 536 flow [2022-11-18 20:08:18,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=536, PETRI_PLACES=228, PETRI_TRANSITIONS=215} [2022-11-18 20:08:18,291 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 22 predicate places. [2022-11-18 20:08:18,292 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 215 transitions, 536 flow [2022-11-18 20:08:18,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 194.875) internal successors, (1559), 8 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states 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 20:08:18,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:18,293 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] [2022-11-18 20:08:18,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:18,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:18,509 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:18,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash -126800473, now seen corresponding path program 1 times [2022-11-18 20:08:18,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:18,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161679159] [2022-11-18 20:08:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:18,546 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:18,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911742519] [2022-11-18 20:08:18,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:18,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:18,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:18,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:18,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:08:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:18,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:08:18,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:19,036 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 20:08:19,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:19,301 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 20:08:19,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:19,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161679159] [2022-11-18 20:08:19,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:19,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911742519] [2022-11-18 20:08:19,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911742519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:19,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:08:19,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 20:08:19,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954728999] [2022-11-18 20:08:19,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:19,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:08:19,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:19,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:08:19,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:08:19,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-18 20:08:19,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 215 transitions, 536 flow. Second operand has 14 states, 14 states have (on average 195.64285714285714) internal successors, (2739), 14 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states 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 20:08:19,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:19,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-18 20:08:19,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:19,652 INFO L130 PetriNetUnfolder]: 11/690 cut-off events. [2022-11-18 20:08:19,653 INFO L131 PetriNetUnfolder]: For 132/134 co-relation queries the response was YES. [2022-11-18 20:08:19,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 690 events. 11/690 cut-off events. For 132/134 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1513 event pairs, 0 based on Foata normal form. 4/650 useless extension candidates. Maximal degree in co-relation 665. Up to 19 conditions per place. [2022-11-18 20:08:19,657 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 37 selfloop transitions, 16 changer transitions 0/243 dead transitions. [2022-11-18 20:08:19,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 752 flow [2022-11-18 20:08:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:08:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:08:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2935 transitions. [2022-11-18 20:08:19,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8544395924308588 [2022-11-18 20:08:19,664 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2935 transitions. [2022-11-18 20:08:19,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2935 transitions. [2022-11-18 20:08:19,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:19,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2935 transitions. [2022-11-18 20:08:19,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 195.66666666666666) internal successors, (2935), 15 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states 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 20:08:19,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 229.0) internal successors, (3664), 16 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states 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 20:08:19,680 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 229.0) internal successors, (3664), 16 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states 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 20:08:19,681 INFO L175 Difference]: Start difference. First operand has 228 places, 215 transitions, 536 flow. Second operand 15 states and 2935 transitions. [2022-11-18 20:08:19,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 752 flow [2022-11-18 20:08:19,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 243 transitions, 734 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 20:08:19,690 INFO L231 Difference]: Finished difference. Result has 237 places, 219 transitions, 585 flow [2022-11-18 20:08:19,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=585, PETRI_PLACES=237, PETRI_TRANSITIONS=219} [2022-11-18 20:08:19,693 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 31 predicate places. [2022-11-18 20:08:19,694 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 219 transitions, 585 flow [2022-11-18 20:08:19,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 195.64285714285714) internal successors, (2739), 14 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states 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 20:08:19,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:19,698 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] [2022-11-18 20:08:19,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:19,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:08:19,905 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:19,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:19,905 INFO L85 PathProgramCache]: Analyzing trace with hash -153335038, now seen corresponding path program 2 times [2022-11-18 20:08:19,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:19,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972710243] [2022-11-18 20:08:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:19,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:19,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:19,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404077655] [2022-11-18 20:08:19,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:08:19,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:19,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:19,945 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:19,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:08:20,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:08:20,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:08:20,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:08:20,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:20,371 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 20:08:20,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:20,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:20,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972710243] [2022-11-18 20:08:20,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404077655] [2022-11-18 20:08:20,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404077655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:20,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:20,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:20,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140868971] [2022-11-18 20:08:20,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:20,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:20,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:20,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:20,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:20,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2022-11-18 20:08:20,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 219 transitions, 585 flow. Second operand has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states 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 20:08:20,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:20,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2022-11-18 20:08:20,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:20,570 INFO L130 PetriNetUnfolder]: 11/690 cut-off events. [2022-11-18 20:08:20,571 INFO L131 PetriNetUnfolder]: For 132/134 co-relation queries the response was YES. [2022-11-18 20:08:20,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 690 events. 11/690 cut-off events. For 132/134 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1507 event pairs, 0 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 671. Up to 50 conditions per place. [2022-11-18 20:08:20,574 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 29 selfloop transitions, 5 changer transitions 0/231 dead transitions. [2022-11-18 20:08:20,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 231 transitions, 677 flow [2022-11-18 20:08:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:08:20,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 980 transitions. [2022-11-18 20:08:20,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8558951965065502 [2022-11-18 20:08:20,578 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 980 transitions. [2022-11-18 20:08:20,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 980 transitions. [2022-11-18 20:08:20,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:20,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 980 transitions. [2022-11-18 20:08:20,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 0 states have call successors, (0), 0 states 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 20:08:20,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 20:08:20,584 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 20:08:20,584 INFO L175 Difference]: Start difference. First operand has 237 places, 219 transitions, 585 flow. Second operand 5 states and 980 transitions. [2022-11-18 20:08:20,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 231 transitions, 677 flow [2022-11-18 20:08:20,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 231 transitions, 618 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-18 20:08:20,590 INFO L231 Difference]: Finished difference. Result has 232 places, 222 transitions, 560 flow [2022-11-18 20:08:20,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=560, PETRI_PLACES=232, PETRI_TRANSITIONS=222} [2022-11-18 20:08:20,591 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 26 predicate places. [2022-11-18 20:08:20,591 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 222 transitions, 560 flow [2022-11-18 20:08:20,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states 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 20:08:20,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:20,592 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] [2022-11-18 20:08:20,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:20,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:20,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:20,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash -458418374, now seen corresponding path program 1 times [2022-11-18 20:08:20,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:20,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556861304] [2022-11-18 20:08:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:20,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:20,834 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:20,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683387408] [2022-11-18 20:08:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:20,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:20,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:20,836 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:20,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:08:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:21,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:08:21,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:21,334 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 20:08:21,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:21,599 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 20:08:21,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:21,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556861304] [2022-11-18 20:08:21,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:21,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683387408] [2022-11-18 20:08:21,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683387408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:21,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:08:21,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 20:08:21,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356112267] [2022-11-18 20:08:21,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:21,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:08:21,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:21,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:08:21,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:08:21,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-18 20:08:21,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 222 transitions, 560 flow. Second operand has 16 states, 16 states have (on average 195.6875) internal successors, (3131), 16 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states 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 20:08:21,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:21,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-18 20:08:21,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:22,046 INFO L130 PetriNetUnfolder]: 6/782 cut-off events. [2022-11-18 20:08:22,046 INFO L131 PetriNetUnfolder]: For 121/122 co-relation queries the response was YES. [2022-11-18 20:08:22,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 782 events. 6/782 cut-off events. For 121/122 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 562 event pairs, 0 based on Foata normal form. 8/772 useless extension candidates. Maximal degree in co-relation 957. Up to 20 conditions per place. [2022-11-18 20:08:22,067 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 60 selfloop transitions, 22 changer transitions 0/275 dead transitions. [2022-11-18 20:08:22,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 275 transitions, 917 flow [2022-11-18 20:08:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:08:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:08:22,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4117 transitions. [2022-11-18 20:08:22,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8561031399459347 [2022-11-18 20:08:22,076 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4117 transitions. [2022-11-18 20:08:22,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4117 transitions. [2022-11-18 20:08:22,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:22,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4117 transitions. [2022-11-18 20:08:22,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 196.04761904761904) internal successors, (4117), 21 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states 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 20:08:22,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 229.0) internal successors, (5038), 22 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states 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 20:08:22,099 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 229.0) internal successors, (5038), 22 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states 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 20:08:22,100 INFO L175 Difference]: Start difference. First operand has 232 places, 222 transitions, 560 flow. Second operand 21 states and 4117 transitions. [2022-11-18 20:08:22,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 275 transitions, 917 flow [2022-11-18 20:08:22,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 275 transitions, 907 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-18 20:08:22,106 INFO L231 Difference]: Finished difference. Result has 256 places, 231 transitions, 670 flow [2022-11-18 20:08:22,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=670, PETRI_PLACES=256, PETRI_TRANSITIONS=231} [2022-11-18 20:08:22,107 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 50 predicate places. [2022-11-18 20:08:22,107 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 231 transitions, 670 flow [2022-11-18 20:08:22,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 195.6875) internal successors, (3131), 16 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states 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 20:08:22,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:22,110 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] [2022-11-18 20:08:22,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:22,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:22,317 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:22,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:22,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1679999098, now seen corresponding path program 2 times [2022-11-18 20:08:22,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:22,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208798159] [2022-11-18 20:08:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:22,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:22,381 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:22,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450806264] [2022-11-18 20:08:22,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:08:22,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:22,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:22,383 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:22,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:08:22,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:08:22,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:08:22,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:08:22,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:23,149 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 20:08:23,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:23,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:23,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208798159] [2022-11-18 20:08:23,150 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:23,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450806264] [2022-11-18 20:08:23,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450806264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:23,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:23,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:23,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650448373] [2022-11-18 20:08:23,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:23,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:23,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:23,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:23,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:23,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2022-11-18 20:08:23,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 231 transitions, 670 flow. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states 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 20:08:23,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:23,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2022-11-18 20:08:23,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:23,385 INFO L130 PetriNetUnfolder]: 6/780 cut-off events. [2022-11-18 20:08:23,385 INFO L131 PetriNetUnfolder]: For 182/183 co-relation queries the response was YES. [2022-11-18 20:08:23,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 780 events. 6/780 cut-off events. For 182/183 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 555 event pairs, 0 based on Foata normal form. 2/764 useless extension candidates. Maximal degree in co-relation 958. Up to 80 conditions per place. [2022-11-18 20:08:23,389 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 18 selfloop transitions, 5 changer transitions 0/229 dead transitions. [2022-11-18 20:08:23,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 229 transitions, 706 flow [2022-11-18 20:08:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:08:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:08:23,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 777 transitions. [2022-11-18 20:08:23,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8482532751091703 [2022-11-18 20:08:23,392 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 777 transitions. [2022-11-18 20:08:23,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 777 transitions. [2022-11-18 20:08:23,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:23,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 777 transitions. [2022-11-18 20:08:23,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states 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 20:08:23,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 20:08:23,396 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 20:08:23,397 INFO L175 Difference]: Start difference. First operand has 256 places, 231 transitions, 670 flow. Second operand 4 states and 777 transitions. [2022-11-18 20:08:23,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 229 transitions, 706 flow [2022-11-18 20:08:23,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 229 transitions, 683 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 20:08:23,403 INFO L231 Difference]: Finished difference. Result has 247 places, 229 transitions, 647 flow [2022-11-18 20:08:23,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=647, PETRI_PLACES=247, PETRI_TRANSITIONS=229} [2022-11-18 20:08:23,404 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 41 predicate places. [2022-11-18 20:08:23,404 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 229 transitions, 647 flow [2022-11-18 20:08:23,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states 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 20:08:23,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:23,405 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] [2022-11-18 20:08:23,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:23,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:23,612 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:23,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:23,612 INFO L85 PathProgramCache]: Analyzing trace with hash 644885036, now seen corresponding path program 1 times [2022-11-18 20:08:23,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:23,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149993474] [2022-11-18 20:08:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:23,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:23,680 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:23,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643409367] [2022-11-18 20:08:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:23,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:23,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:23,682 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:23,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:08:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:24,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:08:24,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:24,765 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 20:08:24,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:25,480 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 20:08:25,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:25,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149993474] [2022-11-18 20:08:25,481 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:25,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643409367] [2022-11-18 20:08:25,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643409367] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:25,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:08:25,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 20:08:25,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102891059] [2022-11-18 20:08:25,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:25,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:08:25,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:25,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:08:25,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:08:25,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-18 20:08:25,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 229 transitions, 647 flow. Second operand has 32 states, 32 states have (on average 196.125) internal successors, (6276), 32 states have internal predecessors, (6276), 0 states have call successors, (0), 0 states 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 20:08:25,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:25,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-18 20:08:25,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:26,750 INFO L130 PetriNetUnfolder]: 6/1452 cut-off events. [2022-11-18 20:08:26,751 INFO L131 PetriNetUnfolder]: For 730/731 co-relation queries the response was YES. [2022-11-18 20:08:26,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2214 conditions, 1452 events. 6/1452 cut-off events. For 730/731 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 593 event pairs, 0 based on Foata normal form. 16/1450 useless extension candidates. Maximal degree in co-relation 2072. Up to 38 conditions per place. [2022-11-18 20:08:26,757 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 124 selfloop transitions, 46 changer transitions 0/361 dead transitions. [2022-11-18 20:08:26,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 361 transitions, 1583 flow [2022-11-18 20:08:26,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 20:08:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 20:08:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8817 transitions. [2022-11-18 20:08:26,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.855604075691412 [2022-11-18 20:08:26,775 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 8817 transitions. [2022-11-18 20:08:26,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 8817 transitions. [2022-11-18 20:08:26,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:26,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 8817 transitions. [2022-11-18 20:08:26,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 195.93333333333334) internal successors, (8817), 45 states have internal predecessors, (8817), 0 states have call successors, (0), 0 states 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 20:08:26,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 229.0) internal successors, (10534), 46 states have internal predecessors, (10534), 0 states have call successors, (0), 0 states 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 20:08:26,866 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 229.0) internal successors, (10534), 46 states have internal predecessors, (10534), 0 states have call successors, (0), 0 states 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 20:08:26,866 INFO L175 Difference]: Start difference. First operand has 247 places, 229 transitions, 647 flow. Second operand 45 states and 8817 transitions. [2022-11-18 20:08:26,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 361 transitions, 1583 flow [2022-11-18 20:08:26,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 361 transitions, 1573 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:08:26,877 INFO L231 Difference]: Finished difference. Result has 297 places, 254 transitions, 960 flow [2022-11-18 20:08:26,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=960, PETRI_PLACES=297, PETRI_TRANSITIONS=254} [2022-11-18 20:08:26,879 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 91 predicate places. [2022-11-18 20:08:26,879 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 254 transitions, 960 flow [2022-11-18 20:08:26,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 196.125) internal successors, (6276), 32 states have internal predecessors, (6276), 0 states have call successors, (0), 0 states 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 20:08:26,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:26,882 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] [2022-11-18 20:08:26,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:27,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:27,091 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:27,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:27,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1970420908, now seen corresponding path program 2 times [2022-11-18 20:08:27,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:27,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075752366] [2022-11-18 20:08:27,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:27,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:27,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:27,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126637170] [2022-11-18 20:08:27,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:08:27,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:27,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:27,253 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:27,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:08:27,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:08:27,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:08:27,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:08:27,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:27,792 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 20:08:27,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:27,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:27,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075752366] [2022-11-18 20:08:27,793 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:27,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126637170] [2022-11-18 20:08:27,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126637170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:27,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:27,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:27,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142945090] [2022-11-18 20:08:27,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:27,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:27,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:27,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:27,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 229 [2022-11-18 20:08:27,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 254 transitions, 960 flow. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states 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 20:08:27,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:27,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 229 [2022-11-18 20:08:27,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:28,447 INFO L130 PetriNetUnfolder]: 6/1440 cut-off events. [2022-11-18 20:08:28,447 INFO L131 PetriNetUnfolder]: For 732/742 co-relation queries the response was YES. [2022-11-18 20:08:28,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2059 conditions, 1440 events. 6/1440 cut-off events. For 732/742 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 532 event pairs, 0 based on Foata normal form. 3/1428 useless extension candidates. Maximal degree in co-relation 1901. Up to 38 conditions per place. [2022-11-18 20:08:28,452 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 11 selfloop transitions, 4 changer transitions 0/255 dead transitions. [2022-11-18 20:08:28,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 255 transitions, 992 flow [2022-11-18 20:08:28,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:08:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 997 transitions. [2022-11-18 20:08:28,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8707423580786027 [2022-11-18 20:08:28,455 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 997 transitions. [2022-11-18 20:08:28,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 997 transitions. [2022-11-18 20:08:28,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:28,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 997 transitions. [2022-11-18 20:08:28,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.4) internal successors, (997), 5 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 20:08:28,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 20:08:28,460 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 20:08:28,460 INFO L175 Difference]: Start difference. First operand has 297 places, 254 transitions, 960 flow. Second operand 5 states and 997 transitions. [2022-11-18 20:08:28,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 255 transitions, 992 flow [2022-11-18 20:08:28,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 255 transitions, 935 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-18 20:08:28,471 INFO L231 Difference]: Finished difference. Result has 283 places, 253 transitions, 913 flow [2022-11-18 20:08:28,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=913, PETRI_PLACES=283, PETRI_TRANSITIONS=253} [2022-11-18 20:08:28,472 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 77 predicate places. [2022-11-18 20:08:28,472 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 253 transitions, 913 flow [2022-11-18 20:08:28,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states 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 20:08:28,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:28,473 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] [2022-11-18 20:08:28,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:28,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:28,680 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:28,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:28,680 INFO L85 PathProgramCache]: Analyzing trace with hash 953506468, now seen corresponding path program 1 times [2022-11-18 20:08:28,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:28,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486506988] [2022-11-18 20:08:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:28,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:28,808 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:28,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456855715] [2022-11-18 20:08:28,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:28,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:28,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:28,810 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:28,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:08:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:29,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 20:08:29,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:31,127 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 20:08:31,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:32,920 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 20:08:32,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:32,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486506988] [2022-11-18 20:08:32,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:32,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456855715] [2022-11-18 20:08:32,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456855715] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:32,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:08:32,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-18 20:08:32,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132483780] [2022-11-18 20:08:32,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:32,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 20:08:32,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:32,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 20:08:32,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 20:08:32,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-18 20:08:32,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 253 transitions, 913 flow. Second operand has 61 states, 61 states have (on average 196.37704918032787) internal successors, (11979), 61 states have internal predecessors, (11979), 0 states have call successors, (0), 0 states 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 20:08:32,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:32,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-18 20:08:32,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:36,958 INFO L130 PetriNetUnfolder]: 6/2700 cut-off events. [2022-11-18 20:08:36,958 INFO L131 PetriNetUnfolder]: For 4949/4950 co-relation queries the response was YES. [2022-11-18 20:08:36,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4463 conditions, 2700 events. 6/2700 cut-off events. For 4949/4950 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 608 event pairs, 0 based on Foata normal form. 30/2716 useless extension candidates. Maximal degree in co-relation 4307. Up to 96 conditions per place. [2022-11-18 20:08:36,967 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 244 selfloop transitions, 91 changer transitions 0/525 dead transitions. [2022-11-18 20:08:36,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 525 transitions, 2995 flow [2022-11-18 20:08:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 20:08:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-18 20:08:36,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 17629 transitions. [2022-11-18 20:08:36,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.85536147501213 [2022-11-18 20:08:36,995 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 17629 transitions. [2022-11-18 20:08:36,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 17629 transitions. [2022-11-18 20:08:37,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:37,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 17629 transitions. [2022-11-18 20:08:37,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 195.87777777777777) internal successors, (17629), 90 states have internal predecessors, (17629), 0 states have call successors, (0), 0 states 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 20:08:37,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 229.0) internal successors, (20839), 91 states have internal predecessors, (20839), 0 states have call successors, (0), 0 states 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 20:08:37,071 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 229.0) internal successors, (20839), 91 states have internal predecessors, (20839), 0 states have call successors, (0), 0 states 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 20:08:37,072 INFO L175 Difference]: Start difference. First operand has 283 places, 253 transitions, 913 flow. Second operand 90 states and 17629 transitions. [2022-11-18 20:08:37,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 525 transitions, 2995 flow [2022-11-18 20:08:37,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 525 transitions, 2987 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:08:37,093 INFO L231 Difference]: Finished difference. Result has 384 places, 299 transitions, 1594 flow [2022-11-18 20:08:37,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1594, PETRI_PLACES=384, PETRI_TRANSITIONS=299} [2022-11-18 20:08:37,095 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 178 predicate places. [2022-11-18 20:08:37,096 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 299 transitions, 1594 flow [2022-11-18 20:08:37,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 196.37704918032787) internal successors, (11979), 61 states have internal predecessors, (11979), 0 states have call successors, (0), 0 states 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 20:08:37,099 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:37,100 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] [2022-11-18 20:08:37,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:37,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:08:37,311 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:37,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:37,311 INFO L85 PathProgramCache]: Analyzing trace with hash 327607207, now seen corresponding path program 2 times [2022-11-18 20:08:37,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:37,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544633460] [2022-11-18 20:08:37,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:37,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:37,596 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:37,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409169605] [2022-11-18 20:08:37,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:08:37,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:37,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:37,600 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:37,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:08:38,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:08:38,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:08:38,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:08:38,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:38,627 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 20:08:38,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:38,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:38,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544633460] [2022-11-18 20:08:38,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:38,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409169605] [2022-11-18 20:08:38,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409169605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:38,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:38,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:38,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732334162] [2022-11-18 20:08:38,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:38,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:38,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:38,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:38,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 229 [2022-11-18 20:08:38,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 299 transitions, 1594 flow. Second operand has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states 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 20:08:38,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:38,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 229 [2022-11-18 20:08:38,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:40,222 INFO L130 PetriNetUnfolder]: 6/2699 cut-off events. [2022-11-18 20:08:40,222 INFO L131 PetriNetUnfolder]: For 2959/2968 co-relation queries the response was YES. [2022-11-18 20:08:40,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 2699 events. 6/2699 cut-off events. For 2959/2968 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 603 event pairs, 0 based on Foata normal form. 1/2687 useless extension candidates. Maximal degree in co-relation 3983. Up to 96 conditions per place. [2022-11-18 20:08:40,232 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 9 selfloop transitions, 3 changer transitions 0/298 dead transitions. [2022-11-18 20:08:40,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 298 transitions, 1616 flow [2022-11-18 20:08:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:08:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:08:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 797 transitions. [2022-11-18 20:08:40,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8700873362445415 [2022-11-18 20:08:40,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 797 transitions. [2022-11-18 20:08:40,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 797 transitions. [2022-11-18 20:08:40,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:40,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 797 transitions. [2022-11-18 20:08:40,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 0 states have call successors, (0), 0 states 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 20:08:40,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 20:08:40,238 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 20:08:40,239 INFO L175 Difference]: Start difference. First operand has 384 places, 299 transitions, 1594 flow. Second operand 4 states and 797 transitions. [2022-11-18 20:08:40,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 298 transitions, 1616 flow [2022-11-18 20:08:40,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 298 transitions, 1497 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 20:08:40,267 INFO L231 Difference]: Finished difference. Result has 344 places, 298 transitions, 1479 flow [2022-11-18 20:08:40,267 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1479, PETRI_PLACES=344, PETRI_TRANSITIONS=298} [2022-11-18 20:08:40,268 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 138 predicate places. [2022-11-18 20:08:40,268 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 298 transitions, 1479 flow [2022-11-18 20:08:40,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states 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 20:08:40,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:40,269 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] [2022-11-18 20:08:40,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:40,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:40,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:40,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:40,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2104014149, now seen corresponding path program 1 times [2022-11-18 20:08:40,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:40,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310818452] [2022-11-18 20:08:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:40,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:40,688 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:40,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113388424] [2022-11-18 20:08:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:40,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:40,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:40,690 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:40,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:08:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:42,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 5185 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:08:42,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:44,391 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 20:08:44,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:46,254 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 20:08:46,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:46,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310818452] [2022-11-18 20:08:46,255 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:46,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113388424] [2022-11-18 20:08:46,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113388424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:46,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:08:46,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:08:46,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069276434] [2022-11-18 20:08:46,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:46,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:08:46,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:46,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:08:46,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:46,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2022-11-18 20:08:46,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 298 transitions, 1479 flow. Second operand has 8 states, 8 states have (on average 192.75) internal successors, (1542), 8 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states 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 20:08:46,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:46,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2022-11-18 20:08:46,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:48,917 INFO L130 PetriNetUnfolder]: 7/4005 cut-off events. [2022-11-18 20:08:48,918 INFO L131 PetriNetUnfolder]: For 4610/4611 co-relation queries the response was YES. [2022-11-18 20:08:48,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6537 conditions, 4005 events. 7/4005 cut-off events. For 4610/4611 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 510 event pairs, 0 based on Foata normal form. 3/3995 useless extension candidates. Maximal degree in co-relation 6367. Up to 187 conditions per place. [2022-11-18 20:08:48,927 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 38 selfloop transitions, 9 changer transitions 0/322 dead transitions. [2022-11-18 20:08:48,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 322 transitions, 1635 flow [2022-11-18 20:08:48,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:08:48,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:08:48,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1751 transitions. [2022-11-18 20:08:48,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8495875788452207 [2022-11-18 20:08:48,931 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1751 transitions. [2022-11-18 20:08:48,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1751 transitions. [2022-11-18 20:08:48,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:48,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1751 transitions. [2022-11-18 20:08:48,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.55555555555554) internal successors, (1751), 9 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states 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 20:08:48,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states 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 20:08:48,941 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states 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 20:08:48,941 INFO L175 Difference]: Start difference. First operand has 344 places, 298 transitions, 1479 flow. Second operand 9 states and 1751 transitions. [2022-11-18 20:08:48,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 322 transitions, 1635 flow [2022-11-18 20:08:48,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 322 transitions, 1629 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:08:48,977 INFO L231 Difference]: Finished difference. Result has 354 places, 302 transitions, 1529 flow [2022-11-18 20:08:48,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1529, PETRI_PLACES=354, PETRI_TRANSITIONS=302} [2022-11-18 20:08:48,978 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 148 predicate places. [2022-11-18 20:08:48,979 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 302 transitions, 1529 flow [2022-11-18 20:08:48,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 192.75) internal successors, (1542), 8 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states 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 20:08:48,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:48,980 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] [2022-11-18 20:08:49,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:49,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:08:49,198 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:08:49,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:49,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1787573805, now seen corresponding path program 1 times [2022-11-18 20:08:49,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:49,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873735368] [2022-11-18 20:08:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:49,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:49,581 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:49,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214133810] [2022-11-18 20:08:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:49,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:49,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:49,584 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:49,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:08:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:54,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 5331 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:08:54,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:56,367 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 20:08:56,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:58,716 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 20:08:58,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:58,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873735368] [2022-11-18 20:08:58,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:58,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214133810] [2022-11-18 20:08:58,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214133810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:58,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:08:58,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 20:08:58,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949985623] [2022-11-18 20:08:58,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:58,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:08:58,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:58,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:08:58,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:08:58,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 229 [2022-11-18 20:08:58,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 302 transitions, 1529 flow. Second operand has 14 states, 14 states have (on average 184.35714285714286) internal successors, (2581), 14 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states 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 20:08:58,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:58,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 229 [2022-11-18 20:08:58,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:02,489 INFO L130 PetriNetUnfolder]: 7/3973 cut-off events. [2022-11-18 20:09:02,489 INFO L131 PetriNetUnfolder]: For 4797/4798 co-relation queries the response was YES. [2022-11-18 20:09:02,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6982 conditions, 3973 events. 7/3973 cut-off events. For 4797/4798 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 32/3992 useless extension candidates. Maximal degree in co-relation 6810. Up to 307 conditions per place. [2022-11-18 20:09:02,499 INFO L137 encePairwiseOnDemand]: 215/229 looper letters, 224 selfloop transitions, 144 changer transitions 0/542 dead transitions. [2022-11-18 20:09:02,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 542 transitions, 4389 flow [2022-11-18 20:09:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:09:02,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 20:09:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4399 transitions. [2022-11-18 20:09:02,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8004002911208151 [2022-11-18 20:09:02,506 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4399 transitions. [2022-11-18 20:09:02,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4399 transitions. [2022-11-18 20:09:02,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:02,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4399 transitions. [2022-11-18 20:09:02,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 183.29166666666666) internal successors, (4399), 24 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states 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 20:09:02,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 229.0) internal successors, (5725), 25 states have internal predecessors, (5725), 0 states have call successors, (0), 0 states 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 20:09:02,528 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 229.0) internal successors, (5725), 25 states have internal predecessors, (5725), 0 states have call successors, (0), 0 states 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 20:09:02,528 INFO L175 Difference]: Start difference. First operand has 354 places, 302 transitions, 1529 flow. Second operand 24 states and 4399 transitions. [2022-11-18 20:09:02,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 542 transitions, 4389 flow [2022-11-18 20:09:02,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 542 transitions, 4373 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 20:09:02,569 INFO L231 Difference]: Finished difference. Result has 378 places, 433 transitions, 3568 flow [2022-11-18 20:09:02,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3568, PETRI_PLACES=378, PETRI_TRANSITIONS=433} [2022-11-18 20:09:02,570 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 172 predicate places. [2022-11-18 20:09:02,571 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 433 transitions, 3568 flow [2022-11-18 20:09:02,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 184.35714285714286) internal successors, (2581), 14 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states 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 20:09:02,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:02,572 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] [2022-11-18 20:09:02,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:02,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:09:02,799 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:09:02,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:02,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1783092791, now seen corresponding path program 1 times [2022-11-18 20:09:02,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:02,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888948783] [2022-11-18 20:09:02,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:02,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:03,005 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:09:03,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791489931] [2022-11-18 20:09:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:03,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:03,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:03,008 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:03,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:09:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 5499 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:09:08,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:11,563 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 20:09:11,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:09:11,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:11,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888948783] [2022-11-18 20:09:11,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:09:11,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791489931] [2022-11-18 20:09:11,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791489931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:11,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:11,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:09:11,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238745128] [2022-11-18 20:09:11,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:11,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:09:11,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:11,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:09:11,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:09:11,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 229 [2022-11-18 20:09:11,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 433 transitions, 3568 flow. Second operand has 11 states, 11 states have (on average 183.45454545454547) internal successors, (2018), 11 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states 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 20:09:11,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:11,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 229 [2022-11-18 20:09:11,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:15,336 INFO L130 PetriNetUnfolder]: 7/3916 cut-off events. [2022-11-18 20:09:15,336 INFO L131 PetriNetUnfolder]: For 7135/7136 co-relation queries the response was YES. [2022-11-18 20:09:15,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7454 conditions, 3916 events. 7/3916 cut-off events. For 7135/7136 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 250 event pairs, 0 based on Foata normal form. 57/3960 useless extension candidates. Maximal degree in co-relation 7276. Up to 370 conditions per place. [2022-11-18 20:09:15,349 INFO L137 encePairwiseOnDemand]: 219/229 looper letters, 208 selfloop transitions, 139 changer transitions 0/521 dead transitions. [2022-11-18 20:09:15,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 521 transitions, 5044 flow [2022-11-18 20:09:15,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:09:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:09:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2751 transitions. [2022-11-18 20:09:15,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8008733624454148 [2022-11-18 20:09:15,367 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2751 transitions. [2022-11-18 20:09:15,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2751 transitions. [2022-11-18 20:09:15,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:15,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2751 transitions. [2022-11-18 20:09:15,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 183.4) internal successors, (2751), 15 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states 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 20:09:15,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 229.0) internal successors, (3664), 16 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states 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 20:09:15,386 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 229.0) internal successors, (3664), 16 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states 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 20:09:15,388 INFO L175 Difference]: Start difference. First operand has 378 places, 433 transitions, 3568 flow. Second operand 15 states and 2751 transitions. [2022-11-18 20:09:15,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 521 transitions, 5044 flow [2022-11-18 20:09:15,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 521 transitions, 5012 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-18 20:09:15,446 INFO L231 Difference]: Finished difference. Result has 385 places, 490 transitions, 4747 flow [2022-11-18 20:09:15,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4747, PETRI_PLACES=385, PETRI_TRANSITIONS=490} [2022-11-18 20:09:15,447 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 179 predicate places. [2022-11-18 20:09:15,447 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 490 transitions, 4747 flow [2022-11-18 20:09:15,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 183.45454545454547) internal successors, (2018), 11 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states 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 20:09:15,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:15,449 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] [2022-11-18 20:09:15,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:15,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:09:15,663 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:09:15,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:15,663 INFO L85 PathProgramCache]: Analyzing trace with hash 790117986, now seen corresponding path program 2 times [2022-11-18 20:09:15,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:15,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382123566] [2022-11-18 20:09:15,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:15,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:16,016 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:09:16,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906234073] [2022-11-18 20:09:16,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:09:16,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:16,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:16,019 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:16,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:11:08,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:11:08,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:08,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 10558 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:11:08,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 42044 proven. 0 refuted. 0 times theorem prover too weak. 35773 trivial. 0 not checked. [2022-11-18 20:11:13,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:11:13,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:13,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382123566] [2022-11-18 20:11:13,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:11:13,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906234073] [2022-11-18 20:11:13,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906234073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:13,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:13,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:11:13,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367336538] [2022-11-18 20:11:13,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:13,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:11:13,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:13,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:11:13,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:11:13,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 229 [2022-11-18 20:11:13,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 490 transitions, 4747 flow. Second operand has 9 states, 9 states have (on average 189.44444444444446) internal successors, (1705), 9 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states 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 20:11:13,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:11:13,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 229 [2022-11-18 20:11:13,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:11:16,611 INFO L130 PetriNetUnfolder]: 7/3888 cut-off events. [2022-11-18 20:11:16,613 INFO L131 PetriNetUnfolder]: For 9584/9585 co-relation queries the response was YES. [2022-11-18 20:11:16,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7293 conditions, 3888 events. 7/3888 cut-off events. For 9584/9585 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 224 event pairs, 0 based on Foata normal form. 28/3903 useless extension candidates. Maximal degree in co-relation 7113. Up to 217 conditions per place. [2022-11-18 20:11:16,629 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 200 selfloop transitions, 49 changer transitions 0/515 dead transitions. [2022-11-18 20:11:16,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 515 transitions, 5490 flow [2022-11-18 20:11:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:11:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:11:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2265 transitions. [2022-11-18 20:11:16,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.824235807860262 [2022-11-18 20:11:16,633 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2265 transitions. [2022-11-18 20:11:16,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2265 transitions. [2022-11-18 20:11:16,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:11:16,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2265 transitions. [2022-11-18 20:11:16,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 188.75) internal successors, (2265), 12 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states 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 20:11:16,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states 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 20:11:16,650 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states 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 20:11:16,650 INFO L175 Difference]: Start difference. First operand has 385 places, 490 transitions, 4747 flow. Second operand 12 states and 2265 transitions. [2022-11-18 20:11:16,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 515 transitions, 5490 flow [2022-11-18 20:11:16,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 515 transitions, 5314 flow, removed 59 selfloop flow, removed 9 redundant places. [2022-11-18 20:11:16,794 INFO L231 Difference]: Finished difference. Result has 387 places, 495 transitions, 4794 flow [2022-11-18 20:11:16,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=4559, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4794, PETRI_PLACES=387, PETRI_TRANSITIONS=495} [2022-11-18 20:11:16,795 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 181 predicate places. [2022-11-18 20:11:16,795 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 495 transitions, 4794 flow [2022-11-18 20:11:16,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.44444444444446) internal successors, (1705), 9 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states 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 20:11:16,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:11:16,797 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] [2022-11-18 20:11:17,023 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2022-11-18 20:11:17,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 137 [2022-11-18 20:11:17,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:11:17,093 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:11:17,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:17,093 INFO L85 PathProgramCache]: Analyzing trace with hash -839043317, now seen corresponding path program 2 times [2022-11-18 20:11:17,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:17,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479183439] [2022-11-18 20:11:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:17,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:17,574 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:11:17,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79713959] [2022-11-18 20:11:17,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:11:17,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:17,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:17,583 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:17,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:11:22,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:11:22,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:22,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 15305 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:11:22,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:29,640 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 20:11:29,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:36,987 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 20:11:36,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:36,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479183439] [2022-11-18 20:11:36,988 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:11:36,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79713959] [2022-11-18 20:11:36,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79713959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:36,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:11:36,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 20:11:36,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144650752] [2022-11-18 20:11:36,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:36,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:11:36,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:36,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:11:36,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:11:36,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2022-11-18 20:11:37,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 495 transitions, 4794 flow. Second operand has 16 states, 16 states have (on average 193.875) internal successors, (3102), 16 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states 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 20:11:37,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:11:37,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2022-11-18 20:11:37,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:11:52,185 INFO L130 PetriNetUnfolder]: 11/8876 cut-off events. [2022-11-18 20:11:52,185 INFO L131 PetriNetUnfolder]: For 21631/21632 co-relation queries the response was YES. [2022-11-18 20:11:52,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16492 conditions, 8876 events. 11/8876 cut-off events. For 21631/21632 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 228 event pairs, 0 based on Foata normal form. 4/8867 useless extension candidates. Maximal degree in co-relation 16312. Up to 336 conditions per place. [2022-11-18 20:11:52,207 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 74 selfloop transitions, 21 changer transitions 0/563 dead transitions. [2022-11-18 20:11:52,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 563 transitions, 5284 flow [2022-11-18 20:11:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:11:52,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:11:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4063 transitions. [2022-11-18 20:11:52,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8448741942191724 [2022-11-18 20:11:52,290 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4063 transitions. [2022-11-18 20:11:52,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4063 transitions. [2022-11-18 20:11:52,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:11:52,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4063 transitions. [2022-11-18 20:11:52,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 193.47619047619048) internal successors, (4063), 21 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states 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 20:11:52,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 229.0) internal successors, (5038), 22 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states 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 20:11:52,303 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 229.0) internal successors, (5038), 22 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states 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 20:11:52,303 INFO L175 Difference]: Start difference. First operand has 387 places, 495 transitions, 4794 flow. Second operand 21 states and 4063 transitions. [2022-11-18 20:11:52,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 563 transitions, 5284 flow [2022-11-18 20:11:52,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 563 transitions, 5227 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-18 20:11:52,388 INFO L231 Difference]: Finished difference. Result has 403 places, 508 transitions, 4935 flow [2022-11-18 20:11:52,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=4761, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4935, PETRI_PLACES=403, PETRI_TRANSITIONS=508} [2022-11-18 20:11:52,389 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 197 predicate places. [2022-11-18 20:11:52,389 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 508 transitions, 4935 flow [2022-11-18 20:11:52,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 193.875) internal successors, (3102), 16 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states 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 20:11:52,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:11:52,392 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] [2022-11-18 20:11:52,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:52,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:11:52,619 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:11:52,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:52,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1717077931, now seen corresponding path program 3 times [2022-11-18 20:11:52,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:52,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677676308] [2022-11-18 20:11:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:52,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:53,823 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:11:53,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029251612] [2022-11-18 20:11:53,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:11:53,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:53,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:53,827 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:53,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42235836-f111-4100-85b1-74f62233f9eb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process