./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:51,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:51,146 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:33:51,154 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:51,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:51,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:51,194 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:51,194 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:51,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:51,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:51,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:51,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:51,202 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:51,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:51,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:33:51,205 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:33:51,205 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:51,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:33:51,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:51,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:33:51,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:51,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:33:51,208 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:33:51,208 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:33:51,209 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:33:51,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:33:51,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:51,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:51,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:51,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:51,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:51,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:51,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:51,214 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:33:51,214 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:33:51,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:33:51,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:51,215 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:33:51,215 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:51,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:51,215 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:51,216 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 [2023-11-19 07:33:51,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:51,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:51,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:51,628 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:51,629 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:51,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2023-11-19 07:33:54,807 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:55,091 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:55,092 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2023-11-19 07:33:55,105 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/data/3ccef7dc3/86851158d539405b80b62341bffc4160/FLAGaef3ee2f2 [2023-11-19 07:33:55,123 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/data/3ccef7dc3/86851158d539405b80b62341bffc4160 [2023-11-19 07:33:55,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:55,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:55,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:55,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:55,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:55,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354c36eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55, skipping insertion in model container [2023-11-19 07:33:55,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,174 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:55,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:55,446 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:33:55,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:55,512 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:33:55,512 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:33:55,521 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:33:55,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55 WrapperNode [2023-11-19 07:33:55,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:55,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:55,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:33:55,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:33:55,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,596 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 186 [2023-11-19 07:33:55,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:55,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:33:55,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:33:55,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:33:55,608 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,642 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:33:55,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:33:55,649 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:33:55,649 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:33:55,650 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:55,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:55,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:55,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:55,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:33:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:33:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:33:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:33:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:33:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:33:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:33:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:33:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:33:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:33:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:33:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:33:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:33:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:33:55,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:33:55,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:33:55,732 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:33:55,842 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:33:55,844 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:33:56,254 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:33:56,652 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:33:56,652 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:33:56,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:56 BoogieIcfgContainer [2023-11-19 07:33:56,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:33:56,668 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:33:56,669 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:33:56,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:33:56,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:55" (1/3) ... [2023-11-19 07:33:56,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74532110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:56, skipping insertion in model container [2023-11-19 07:33:56,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:55" (2/3) ... [2023-11-19 07:33:56,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74532110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:56, skipping insertion in model container [2023-11-19 07:33:56,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:56" (3/3) ... [2023-11-19 07:33:56,677 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2023-11-19 07:33:56,687 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:33:56,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:33:56,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-19 07:33:56,696 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:33:56,918 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:33:56,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 153 transitions, 320 flow [2023-11-19 07:33:57,026 INFO L124 PetriNetUnfolderBase]: 14/151 cut-off events. [2023-11-19 07:33:57,027 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:33:57,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 151 events. 14/151 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 190 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-11-19 07:33:57,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 153 transitions, 320 flow [2023-11-19 07:33:57,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 129 transitions, 267 flow [2023-11-19 07:33:57,044 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:33:57,054 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 129 transitions, 267 flow [2023-11-19 07:33:57,057 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 129 transitions, 267 flow [2023-11-19 07:33:57,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 129 transitions, 267 flow [2023-11-19 07:33:57,096 INFO L124 PetriNetUnfolderBase]: 13/129 cut-off events. [2023-11-19 07:33:57,096 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:33:57,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 129 events. 13/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 200 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-11-19 07:33:57,101 INFO L119 LiptonReduction]: Number of co-enabled transitions 2068 [2023-11-19 07:34:04,795 INFO L134 LiptonReduction]: Checked pairs total: 3644 [2023-11-19 07:34:04,795 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-11-19 07:34:04,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:04,818 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=LoopHeads, 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;@323eb479, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:04,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-19 07:34:04,821 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:34:04,821 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:34:04,822 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:34:04,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:04,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:34:04,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:04,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:04,829 INFO L85 PathProgramCache]: Analyzing trace with hash 26061, now seen corresponding path program 1 times [2023-11-19 07:34:04,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:04,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328670729] [2023-11-19 07:34:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:04,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:05,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328670729] [2023-11-19 07:34:05,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328670729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:05,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:05,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:05,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570229967] [2023-11-19 07:34:05,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:05,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:05,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:05,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:05,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:05,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 292 [2023-11-19 07:34:05,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:05,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:05,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 292 [2023-11-19 07:34:05,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:05,430 INFO L124 PetriNetUnfolderBase]: 342/585 cut-off events. [2023-11-19 07:34:05,430 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-19 07:34:05,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 585 events. 342/585 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2554 event pairs, 297 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 1100. Up to 583 conditions per place. [2023-11-19 07:34:05,443 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 28 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-11-19 07:34:05,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 129 flow [2023-11-19 07:34:05,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-11-19 07:34:05,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440639269406393 [2023-11-19 07:34:05,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-11-19 07:34:05,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-11-19 07:34:05,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:05,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-11-19 07:34:05,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:05,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:05,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:05,526 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 79 flow. Second operand 3 states and 389 transitions. [2023-11-19 07:34:05,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 129 flow [2023-11-19 07:34:05,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:34:05,533 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 68 flow [2023-11-19 07:34:05,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2023-11-19 07:34:05,539 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -6 predicate places. [2023-11-19 07:34:05,540 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 68 flow [2023-11-19 07:34:05,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:05,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:05,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:34:05,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:34:05,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:05,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:05,542 INFO L85 PathProgramCache]: Analyzing trace with hash 26066, now seen corresponding path program 1 times [2023-11-19 07:34:05,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:05,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096131640] [2023-11-19 07:34:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:05,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:05,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096131640] [2023-11-19 07:34:05,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096131640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:05,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:05,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:05,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623284208] [2023-11-19 07:34:05,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:05,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:05,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:05,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:05,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 292 [2023-11-19 07:34:05,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:05,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:05,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 292 [2023-11-19 07:34:05,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:05,798 INFO L124 PetriNetUnfolderBase]: 343/587 cut-off events. [2023-11-19 07:34:05,798 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:34:05,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 587 events. 343/587 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2567 event pairs, 297 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 1183. Up to 587 conditions per place. [2023-11-19 07:34:05,803 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 29 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-11-19 07:34:05,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 138 flow [2023-11-19 07:34:05,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:05,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-11-19 07:34:05,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2023-11-19 07:34:05,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-11-19 07:34:05,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-11-19 07:34:05,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:05,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-11-19 07:34:05,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:05,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:05,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:05,814 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 68 flow. Second operand 3 states and 387 transitions. [2023-11-19 07:34:05,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 138 flow [2023-11-19 07:34:05,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:05,816 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 83 flow [2023-11-19 07:34:05,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-11-19 07:34:05,818 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-11-19 07:34:05,818 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 83 flow [2023-11-19 07:34:05,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:05,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:05,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:34:05,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:34:05,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:05,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:05,820 INFO L85 PathProgramCache]: Analyzing trace with hash 808847, now seen corresponding path program 1 times [2023-11-19 07:34:05,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:05,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058008578] [2023-11-19 07:34:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:05,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:05,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:05,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058008578] [2023-11-19 07:34:05,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058008578] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:05,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897680428] [2023-11-19 07:34:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:05,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:05,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:05,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:05,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:34:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:06,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:34:06,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:06,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:06,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897680428] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:06,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:06,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-19 07:34:06,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644210406] [2023-11-19 07:34:06,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:06,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:34:06,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:06,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:34:06,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:34:06,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 292 [2023-11-19 07:34:06,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 83 flow. Second operand has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:06,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 292 [2023-11-19 07:34:06,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:06,282 INFO L124 PetriNetUnfolderBase]: 346/593 cut-off events. [2023-11-19 07:34:06,282 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:34:06,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1225 conditions, 593 events. 346/593 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2586 event pairs, 297 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 1183. Up to 590 conditions per place. [2023-11-19 07:34:06,287 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 29 selfloop transitions, 9 changer transitions 0/38 dead transitions. [2023-11-19 07:34:06,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 183 flow [2023-11-19 07:34:06,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:34:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:34:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2023-11-19 07:34:06,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275114155251142 [2023-11-19 07:34:06,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2023-11-19 07:34:06,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2023-11-19 07:34:06,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:06,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2023-11-19 07:34:06,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,302 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,302 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 83 flow. Second operand 6 states and 749 transitions. [2023-11-19 07:34:06,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 183 flow [2023-11-19 07:34:06,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 178 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:06,305 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 139 flow [2023-11-19 07:34:06,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-11-19 07:34:06,306 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-11-19 07:34:06,306 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 139 flow [2023-11-19 07:34:06,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:06,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:34:06,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:06,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:06,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:06,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:06,524 INFO L85 PathProgramCache]: Analyzing trace with hash 777319024, now seen corresponding path program 1 times [2023-11-19 07:34:06,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:06,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389881995] [2023-11-19 07:34:06,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:06,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:06,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:06,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389881995] [2023-11-19 07:34:06,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389881995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:06,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:06,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:06,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664083023] [2023-11-19 07:34:06,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:06,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:06,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:06,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:06,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:06,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 292 [2023-11-19 07:34:06,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:06,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 292 [2023-11-19 07:34:06,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:06,858 INFO L124 PetriNetUnfolderBase]: 529/868 cut-off events. [2023-11-19 07:34:06,858 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-19 07:34:06,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 868 events. 529/868 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4058 event pairs, 117 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 1769. Up to 656 conditions per place. [2023-11-19 07:34:06,867 INFO L140 encePairwiseOnDemand]: 281/292 looper letters, 52 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2023-11-19 07:34:06,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 302 flow [2023-11-19 07:34:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:06,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:06,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-11-19 07:34:06,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737442922374429 [2023-11-19 07:34:06,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-11-19 07:34:06,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-11-19 07:34:06,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:06,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-11-19 07:34:06,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,876 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 139 flow. Second operand 3 states and 415 transitions. [2023-11-19 07:34:06,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 302 flow [2023-11-19 07:34:06,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 281 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:06,881 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 171 flow [2023-11-19 07:34:06,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-11-19 07:34:06,884 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-11-19 07:34:06,884 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 171 flow [2023-11-19 07:34:06,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:06,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:34:06,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:34:06,888 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:06,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash 777319021, now seen corresponding path program 1 times [2023-11-19 07:34:06,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:06,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234762750] [2023-11-19 07:34:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:06,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:06,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234762750] [2023-11-19 07:34:06,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234762750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:06,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:06,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:06,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705227781] [2023-11-19 07:34:06,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:06,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:06,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:06,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:06,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:07,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 292 [2023-11-19 07:34:07,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 171 flow. Second operand has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:07,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:07,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 292 [2023-11-19 07:34:07,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:07,381 INFO L124 PetriNetUnfolderBase]: 684/1150 cut-off events. [2023-11-19 07:34:07,381 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-11-19 07:34:07,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 1150 events. 684/1150 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5635 event pairs, 461 based on Foata normal form. 18/675 useless extension candidates. Maximal degree in co-relation 2812. Up to 867 conditions per place. [2023-11-19 07:34:07,391 INFO L140 encePairwiseOnDemand]: 282/292 looper letters, 74 selfloop transitions, 5 changer transitions 2/81 dead transitions. [2023-11-19 07:34:07,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 81 transitions, 451 flow [2023-11-19 07:34:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:07,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 613 transitions. [2023-11-19 07:34:07,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41986301369863016 [2023-11-19 07:34:07,396 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 613 transitions. [2023-11-19 07:34:07,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 613 transitions. [2023-11-19 07:34:07,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:07,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 613 transitions. [2023-11-19 07:34:07,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.6) internal successors, (613), 5 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) [2023-11-19 07:34:07,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:07,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:07,405 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 171 flow. Second operand 5 states and 613 transitions. [2023-11-19 07:34:07,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 81 transitions, 451 flow [2023-11-19 07:34:07,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 81 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:07,411 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 197 flow [2023-11-19 07:34:07,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2023-11-19 07:34:07,415 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-11-19 07:34:07,415 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 197 flow [2023-11-19 07:34:07,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:07,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:07,416 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:34:07,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:34:07,416 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:07,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:07,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1672647406, now seen corresponding path program 2 times [2023-11-19 07:34:07,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:07,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869923929] [2023-11-19 07:34:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:07,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:07,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869923929] [2023-11-19 07:34:07,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869923929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:07,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419060608] [2023-11-19 07:34:07,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:34:07,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:07,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:07,572 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:07,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:34:07,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:34:07,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:34:07,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:34:07,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:34:07,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:07,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419060608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:07,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:34:07,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 07:34:07,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101746777] [2023-11-19 07:34:07,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:07,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:07,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:07,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:07,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:07,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 292 [2023-11-19 07:34:07,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:07,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:07,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 292 [2023-11-19 07:34:07,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:07,977 INFO L124 PetriNetUnfolderBase]: 684/1149 cut-off events. [2023-11-19 07:34:07,977 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-11-19 07:34:07,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 1149 events. 684/1149 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5702 event pairs, 506 based on Foata normal form. 1/657 useless extension candidates. Maximal degree in co-relation 3055. Up to 1144 conditions per place. [2023-11-19 07:34:07,989 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 39 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2023-11-19 07:34:07,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 277 flow [2023-11-19 07:34:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-11-19 07:34:07,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2023-11-19 07:34:07,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-11-19 07:34:07,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-11-19 07:34:07,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:07,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-11-19 07:34:07,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:07,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:07,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:07,997 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 197 flow. Second operand 3 states and 390 transitions. [2023-11-19 07:34:07,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 277 flow [2023-11-19 07:34:07,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 256 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-19 07:34:08,000 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 178 flow [2023-11-19 07:34:08,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2023-11-19 07:34:08,001 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-11-19 07:34:08,001 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 178 flow [2023-11-19 07:34:08,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:08,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:08,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:34:08,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:08,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:08,215 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:08,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1672655984, now seen corresponding path program 1 times [2023-11-19 07:34:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:08,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122149455] [2023-11-19 07:34:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:08,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:08,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:08,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122149455] [2023-11-19 07:34:08,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122149455] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:08,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361787855] [2023-11-19 07:34:08,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:08,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:08,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:08,504 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:08,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:34:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:08,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:34:08,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:08,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:34:08,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:08,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:34:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:08,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:08,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:08,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-19 07:34:08,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:08,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-19 07:34:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:08,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361787855] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:08,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:08,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-11-19 07:34:08,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648584137] [2023-11-19 07:34:08,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:08,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:34:08,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:08,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:34:08,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:34:09,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 292 [2023-11-19 07:34:09,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 178 flow. Second operand has 14 states, 14 states have (on average 106.28571428571429) internal successors, (1488), 14 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:09,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:09,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 292 [2023-11-19 07:34:09,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:09,872 INFO L124 PetriNetUnfolderBase]: 863/1479 cut-off events. [2023-11-19 07:34:09,872 INFO L125 PetriNetUnfolderBase]: For 385/385 co-relation queries the response was YES. [2023-11-19 07:34:09,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3921 conditions, 1479 events. 863/1479 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8043 event pairs, 352 based on Foata normal form. 0/830 useless extension candidates. Maximal degree in co-relation 3114. Up to 1045 conditions per place. [2023-11-19 07:34:09,885 INFO L140 encePairwiseOnDemand]: 278/292 looper letters, 60 selfloop transitions, 24 changer transitions 0/84 dead transitions. [2023-11-19 07:34:09,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 487 flow [2023-11-19 07:34:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:34:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:34:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 907 transitions. [2023-11-19 07:34:09,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882705479452055 [2023-11-19 07:34:09,890 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 907 transitions. [2023-11-19 07:34:09,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 907 transitions. [2023-11-19 07:34:09,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:09,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 907 transitions. [2023-11-19 07:34:09,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.375) internal successors, (907), 8 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:09,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:09,899 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:09,900 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 178 flow. Second operand 8 states and 907 transitions. [2023-11-19 07:34:09,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 487 flow [2023-11-19 07:34:09,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 84 transitions, 475 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:09,907 INFO L231 Difference]: Finished difference. Result has 50 places, 60 transitions, 309 flow [2023-11-19 07:34:09,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=309, PETRI_PLACES=50, PETRI_TRANSITIONS=60} [2023-11-19 07:34:09,908 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2023-11-19 07:34:09,908 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 60 transitions, 309 flow [2023-11-19 07:34:09,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.28571428571429) internal successors, (1488), 14 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:09,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:09,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:34:09,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:10,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:10,131 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:10,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:10,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1672656004, now seen corresponding path program 1 times [2023-11-19 07:34:10,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:10,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674037395] [2023-11-19 07:34:10,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:10,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:10,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:10,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674037395] [2023-11-19 07:34:10,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674037395] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:10,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510814008] [2023-11-19 07:34:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:10,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:10,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:10,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:10,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:34:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:10,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 07:34:10,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:10,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:34:10,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:10,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:34:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:10,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:10,672 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_129 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_129) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2023-11-19 07:34:10,686 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:10,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-19 07:34:10,695 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:10,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-11-19 07:34:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-19 07:34:10,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510814008] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:10,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:10,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-11-19 07:34:10,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062651815] [2023-11-19 07:34:10,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:10,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:34:10,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:10,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:34:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=121, Unknown=1, NotChecked=22, Total=182 [2023-11-19 07:34:10,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 292 [2023-11-19 07:34:10,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 60 transitions, 309 flow. Second operand has 14 states, 14 states have (on average 94.28571428571429) internal successors, (1320), 14 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:10,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:10,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 292 [2023-11-19 07:34:10,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:11,344 INFO L124 PetriNetUnfolderBase]: 862/1485 cut-off events. [2023-11-19 07:34:11,344 INFO L125 PetriNetUnfolderBase]: For 788/788 co-relation queries the response was YES. [2023-11-19 07:34:11,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4309 conditions, 1485 events. 862/1485 cut-off events. For 788/788 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8179 event pairs, 372 based on Foata normal form. 0/940 useless extension candidates. Maximal degree in co-relation 3496. Up to 1052 conditions per place. [2023-11-19 07:34:11,358 INFO L140 encePairwiseOnDemand]: 280/292 looper letters, 59 selfloop transitions, 26 changer transitions 0/85 dead transitions. [2023-11-19 07:34:11,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 85 transitions, 573 flow [2023-11-19 07:34:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:34:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:34:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 808 transitions. [2023-11-19 07:34:11,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458904109589041 [2023-11-19 07:34:11,364 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 808 transitions. [2023-11-19 07:34:11,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 808 transitions. [2023-11-19 07:34:11,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:11,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 808 transitions. [2023-11-19 07:34:11,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.0) internal successors, (808), 8 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:11,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:11,373 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:11,373 INFO L175 Difference]: Start difference. First operand has 50 places, 60 transitions, 309 flow. Second operand 8 states and 808 transitions. [2023-11-19 07:34:11,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 85 transitions, 573 flow [2023-11-19 07:34:11,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 85 transitions, 564 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:11,380 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 361 flow [2023-11-19 07:34:11,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=361, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2023-11-19 07:34:11,383 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2023-11-19 07:34:11,383 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 361 flow [2023-11-19 07:34:11,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.28571428571429) internal successors, (1320), 14 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:11,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:11,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:11,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:11,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:11,607 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:11,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:11,607 INFO L85 PathProgramCache]: Analyzing trace with hash -312618786, now seen corresponding path program 1 times [2023-11-19 07:34:11,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:11,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643747602] [2023-11-19 07:34:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:11,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:11,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643747602] [2023-11-19 07:34:11,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643747602] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:11,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969317088] [2023-11-19 07:34:11,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:11,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:11,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:11,970 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:11,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:34:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:12,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:34:12,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:12,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:34:12,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:12,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:34:12,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:12,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:34:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:12,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:12,298 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_157 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_157) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-11-19 07:34:12,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:12,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-19 07:34:12,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:12,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-11-19 07:34:12,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-11-19 07:34:12,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-19 07:34:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:12,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969317088] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:12,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:12,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-19 07:34:12,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329132262] [2023-11-19 07:34:12,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:12,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:34:12,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:12,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:34:12,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=187, Unknown=6, NotChecked=28, Total=272 [2023-11-19 07:34:12,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 292 [2023-11-19 07:34:12,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 361 flow. Second operand has 17 states, 17 states have (on average 91.23529411764706) internal successors, (1551), 17 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:12,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:12,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 292 [2023-11-19 07:34:12,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:13,304 INFO L124 PetriNetUnfolderBase]: 967/1685 cut-off events. [2023-11-19 07:34:13,304 INFO L125 PetriNetUnfolderBase]: For 1476/1476 co-relation queries the response was YES. [2023-11-19 07:34:13,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5178 conditions, 1685 events. 967/1685 cut-off events. For 1476/1476 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9691 event pairs, 348 based on Foata normal form. 93/1249 useless extension candidates. Maximal degree in co-relation 4358. Up to 619 conditions per place. [2023-11-19 07:34:13,322 INFO L140 encePairwiseOnDemand]: 279/292 looper letters, 84 selfloop transitions, 27 changer transitions 1/112 dead transitions. [2023-11-19 07:34:13,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 112 transitions, 769 flow [2023-11-19 07:34:13,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:34:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 714 transitions. [2023-11-19 07:34:13,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3493150684931507 [2023-11-19 07:34:13,327 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 714 transitions. [2023-11-19 07:34:13,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 714 transitions. [2023-11-19 07:34:13,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:13,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 714 transitions. [2023-11-19 07:34:13,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:13,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:13,336 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:13,336 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 361 flow. Second operand 7 states and 714 transitions. [2023-11-19 07:34:13,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 112 transitions, 769 flow [2023-11-19 07:34:13,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 112 transitions, 757 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:34:13,346 INFO L231 Difference]: Finished difference. Result has 61 places, 67 transitions, 496 flow [2023-11-19 07:34:13,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=496, PETRI_PLACES=61, PETRI_TRANSITIONS=67} [2023-11-19 07:34:13,347 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2023-11-19 07:34:13,348 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 67 transitions, 496 flow [2023-11-19 07:34:13,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 91.23529411764706) internal successors, (1551), 17 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:13,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:13,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:13,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:13,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:13,563 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:13,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:13,563 INFO L85 PathProgramCache]: Analyzing trace with hash -317352100, now seen corresponding path program 1 times [2023-11-19 07:34:13,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:13,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97284137] [2023-11-19 07:34:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:13,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:13,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:13,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97284137] [2023-11-19 07:34:13,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97284137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:13,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:13,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:13,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422669932] [2023-11-19 07:34:13,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:13,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:13,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:13,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:13,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 292 [2023-11-19 07:34:13,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 67 transitions, 496 flow. Second operand has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:13,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:13,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 292 [2023-11-19 07:34:13,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:14,031 INFO L124 PetriNetUnfolderBase]: 835/1457 cut-off events. [2023-11-19 07:34:14,031 INFO L125 PetriNetUnfolderBase]: For 3483/3483 co-relation queries the response was YES. [2023-11-19 07:34:14,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5269 conditions, 1457 events. 835/1457 cut-off events. For 3483/3483 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8127 event pairs, 563 based on Foata normal form. 0/1016 useless extension candidates. Maximal degree in co-relation 5057. Up to 1402 conditions per place. [2023-11-19 07:34:14,048 INFO L140 encePairwiseOnDemand]: 284/292 looper letters, 61 selfloop transitions, 2 changer transitions 16/79 dead transitions. [2023-11-19 07:34:14,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 691 flow [2023-11-19 07:34:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 594 transitions. [2023-11-19 07:34:14,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40684931506849314 [2023-11-19 07:34:14,052 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 594 transitions. [2023-11-19 07:34:14,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 594 transitions. [2023-11-19 07:34:14,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:14,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 594 transitions. [2023-11-19 07:34:14,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.8) internal successors, (594), 5 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) [2023-11-19 07:34:14,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:14,059 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:14,059 INFO L175 Difference]: Start difference. First operand has 61 places, 67 transitions, 496 flow. Second operand 5 states and 594 transitions. [2023-11-19 07:34:14,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 691 flow [2023-11-19 07:34:14,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 674 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-19 07:34:14,072 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 474 flow [2023-11-19 07:34:14,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2023-11-19 07:34:14,074 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2023-11-19 07:34:14,074 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 474 flow [2023-11-19 07:34:14,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:14,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:14,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:14,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:34:14,077 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:14,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:14,077 INFO L85 PathProgramCache]: Analyzing trace with hash -312725716, now seen corresponding path program 1 times [2023-11-19 07:34:14,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:14,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733830681] [2023-11-19 07:34:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:14,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:14,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:14,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733830681] [2023-11-19 07:34:14,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733830681] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:14,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514627915] [2023-11-19 07:34:14,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:14,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:14,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:14,483 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:14,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:34:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:14,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:34:14,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:14,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:34:14,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:14,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:34:14,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:14,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:34:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:14,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:14,825 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_195 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_195) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2023-11-19 07:34:15,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:15,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-11-19 07:34:15,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:15,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2023-11-19 07:34:15,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-19 07:34:15,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-19 07:34:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:15,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514627915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:15,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:15,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-19 07:34:15,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579648795] [2023-11-19 07:34:15,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:15,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:34:15,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:15,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:34:15,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=191, Unknown=9, NotChecked=28, Total=272 [2023-11-19 07:34:15,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 292 [2023-11-19 07:34:15,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 474 flow. Second operand has 17 states, 17 states have (on average 91.23529411764706) internal successors, (1551), 17 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:15,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:15,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 292 [2023-11-19 07:34:15,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:16,585 INFO L124 PetriNetUnfolderBase]: 761/1321 cut-off events. [2023-11-19 07:34:16,585 INFO L125 PetriNetUnfolderBase]: For 3295/3295 co-relation queries the response was YES. [2023-11-19 07:34:16,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5056 conditions, 1321 events. 761/1321 cut-off events. For 3295/3295 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 7313 event pairs, 330 based on Foata normal form. 31/933 useless extension candidates. Maximal degree in co-relation 5033. Up to 552 conditions per place. [2023-11-19 07:34:16,607 INFO L140 encePairwiseOnDemand]: 281/292 looper letters, 63 selfloop transitions, 26 changer transitions 0/89 dead transitions. [2023-11-19 07:34:16,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 89 transitions, 746 flow [2023-11-19 07:34:16,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:34:16,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 692 transitions. [2023-11-19 07:34:16,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385518590998043 [2023-11-19 07:34:16,611 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 692 transitions. [2023-11-19 07:34:16,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 692 transitions. [2023-11-19 07:34:16,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:16,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 692 transitions. [2023-11-19 07:34:16,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:16,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:16,618 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:16,618 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 474 flow. Second operand 7 states and 692 transitions. [2023-11-19 07:34:16,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 89 transitions, 746 flow [2023-11-19 07:34:16,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 89 transitions, 682 flow, removed 30 selfloop flow, removed 5 redundant places. [2023-11-19 07:34:16,634 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 472 flow [2023-11-19 07:34:16,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=472, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2023-11-19 07:34:16,635 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2023-11-19 07:34:16,635 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 472 flow [2023-11-19 07:34:16,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 91.23529411764706) internal successors, (1551), 17 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:16,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:16,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:16,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 07:34:16,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:16,856 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:16,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1104610090, now seen corresponding path program 1 times [2023-11-19 07:34:16,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:16,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607854355] [2023-11-19 07:34:16,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:16,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:16,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:16,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607854355] [2023-11-19 07:34:16,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607854355] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:16,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588196343] [2023-11-19 07:34:16,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:16,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:16,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:16,967 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:16,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:34:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:17,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:34:17,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:17,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:17,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:34:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:17,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588196343] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:17,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:17,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-19 07:34:17,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574729978] [2023-11-19 07:34:17,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:17,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:34:17,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:17,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:34:17,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:34:17,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 292 [2023-11-19 07:34:17,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 472 flow. Second operand has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:17,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:17,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 292 [2023-11-19 07:34:17,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:18,075 INFO L124 PetriNetUnfolderBase]: 1138/1952 cut-off events. [2023-11-19 07:34:18,075 INFO L125 PetriNetUnfolderBase]: For 4403/4403 co-relation queries the response was YES. [2023-11-19 07:34:18,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7117 conditions, 1952 events. 1138/1952 cut-off events. For 4403/4403 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11172 event pairs, 590 based on Foata normal form. 88/1435 useless extension candidates. Maximal degree in co-relation 4750. Up to 1319 conditions per place. [2023-11-19 07:34:18,095 INFO L140 encePairwiseOnDemand]: 281/292 looper letters, 109 selfloop transitions, 14 changer transitions 1/124 dead transitions. [2023-11-19 07:34:18,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 124 transitions, 1031 flow [2023-11-19 07:34:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:34:18,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 842 transitions. [2023-11-19 07:34:18,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41193737769080235 [2023-11-19 07:34:18,100 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 842 transitions. [2023-11-19 07:34:18,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 842 transitions. [2023-11-19 07:34:18,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:18,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 842 transitions. [2023-11-19 07:34:18,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:18,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:18,111 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:18,111 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 472 flow. Second operand 7 states and 842 transitions. [2023-11-19 07:34:18,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 124 transitions, 1031 flow [2023-11-19 07:34:18,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 124 transitions, 1005 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:34:18,124 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 654 flow [2023-11-19 07:34:18,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=654, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2023-11-19 07:34:18,124 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2023-11-19 07:34:18,125 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 654 flow [2023-11-19 07:34:18,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:18,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:18,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:18,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:18,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:18,351 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:18,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:18,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1101253697, now seen corresponding path program 1 times [2023-11-19 07:34:18,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:18,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649219343] [2023-11-19 07:34:18,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:18,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:18,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:18,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649219343] [2023-11-19 07:34:18,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649219343] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:18,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325476465] [2023-11-19 07:34:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:18,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:18,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:18,647 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:18,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:34:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:18,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:34:18,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:18,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:34:18,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:18,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:34:18,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:18,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:34:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:18,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:18,991 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_243 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_243) c_~A~0.base) c_~A~0.offset) 4294967296))) is different from false [2023-11-19 07:34:19,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:19,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-19 07:34:19,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:19,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2023-11-19 07:34:19,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-11-19 07:34:19,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-19 07:34:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:19,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325476465] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:19,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:19,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-19 07:34:19,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135383968] [2023-11-19 07:34:19,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:19,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:34:19,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:34:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=190, Unknown=3, NotChecked=28, Total=272 [2023-11-19 07:34:19,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 292 [2023-11-19 07:34:19,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 654 flow. Second operand has 17 states, 17 states have (on average 91.41176470588235) internal successors, (1554), 17 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:19,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:19,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 292 [2023-11-19 07:34:19,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:20,120 INFO L124 PetriNetUnfolderBase]: 1336/2326 cut-off events. [2023-11-19 07:34:20,120 INFO L125 PetriNetUnfolderBase]: For 7554/7554 co-relation queries the response was YES. [2023-11-19 07:34:20,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 2326 events. 1336/2326 cut-off events. For 7554/7554 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 14063 event pairs, 244 based on Foata normal form. 0/1643 useless extension candidates. Maximal degree in co-relation 6245. Up to 912 conditions per place. [2023-11-19 07:34:20,149 INFO L140 encePairwiseOnDemand]: 279/292 looper letters, 109 selfloop transitions, 15 changer transitions 0/124 dead transitions. [2023-11-19 07:34:20,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 124 transitions, 1414 flow [2023-11-19 07:34:20,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:34:20,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 695 transitions. [2023-11-19 07:34:20,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34001956947162426 [2023-11-19 07:34:20,154 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 695 transitions. [2023-11-19 07:34:20,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 695 transitions. [2023-11-19 07:34:20,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:20,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 695 transitions. [2023-11-19 07:34:20,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.28571428571429) internal successors, (695), 7 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:20,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:20,162 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:20,162 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 654 flow. Second operand 7 states and 695 transitions. [2023-11-19 07:34:20,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 124 transitions, 1414 flow [2023-11-19 07:34:20,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 1395 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-19 07:34:20,179 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 716 flow [2023-11-19 07:34:20,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=716, PETRI_PLACES=70, PETRI_TRANSITIONS=76} [2023-11-19 07:34:20,180 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2023-11-19 07:34:20,181 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 716 flow [2023-11-19 07:34:20,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 91.41176470588235) internal successors, (1554), 17 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:20,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:20,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:20,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:20,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:20,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:20,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1101253691, now seen corresponding path program 1 times [2023-11-19 07:34:20,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:20,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082751565] [2023-11-19 07:34:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:20,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:20,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:20,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082751565] [2023-11-19 07:34:20,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082751565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:20,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315250878] [2023-11-19 07:34:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:20,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:20,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:20,705 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:20,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:34:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:20,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:34:20,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:20,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:34:20,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:20,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:34:20,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:20,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:34:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:20,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:21,062 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_270 (Array Int Int)) (v_ArrVal_269 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_269) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_270) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456)) is different from false [2023-11-19 07:34:21,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:21,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-11-19 07:34:21,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:21,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-11-19 07:34:21,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-11-19 07:34:21,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-19 07:34:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-19 07:34:21,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315250878] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:21,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:21,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-19 07:34:21,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78824974] [2023-11-19 07:34:21,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:21,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:34:21,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:34:21,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=188, Unknown=5, NotChecked=28, Total=272 [2023-11-19 07:34:21,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 292 [2023-11-19 07:34:21,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 716 flow. Second operand has 17 states, 17 states have (on average 91.41176470588235) internal successors, (1554), 17 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:21,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:21,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 292 [2023-11-19 07:34:21,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:21,907 INFO L124 PetriNetUnfolderBase]: 1254/2180 cut-off events. [2023-11-19 07:34:21,907 INFO L125 PetriNetUnfolderBase]: For 7302/7302 co-relation queries the response was YES. [2023-11-19 07:34:21,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9656 conditions, 2180 events. 1254/2180 cut-off events. For 7302/7302 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12934 event pairs, 244 based on Foata normal form. 0/1759 useless extension candidates. Maximal degree in co-relation 6847. Up to 912 conditions per place. [2023-11-19 07:34:21,930 INFO L140 encePairwiseOnDemand]: 281/292 looper letters, 108 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2023-11-19 07:34:21,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 123 transitions, 1452 flow [2023-11-19 07:34:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:21,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:34:21,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 692 transitions. [2023-11-19 07:34:21,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385518590998043 [2023-11-19 07:34:21,934 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 692 transitions. [2023-11-19 07:34:21,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 692 transitions. [2023-11-19 07:34:21,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:21,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 692 transitions. [2023-11-19 07:34:21,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:21,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:21,942 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:21,942 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 716 flow. Second operand 7 states and 692 transitions. [2023-11-19 07:34:21,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 123 transitions, 1452 flow [2023-11-19 07:34:21,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 123 transitions, 1444 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:34:21,963 INFO L231 Difference]: Finished difference. Result has 73 places, 75 transitions, 734 flow [2023-11-19 07:34:21,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=734, PETRI_PLACES=73, PETRI_TRANSITIONS=75} [2023-11-19 07:34:21,964 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2023-11-19 07:34:21,964 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 75 transitions, 734 flow [2023-11-19 07:34:21,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 91.41176470588235) internal successors, (1554), 17 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:21,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:21,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:21,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:22,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:34:22,179 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:22,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:22,180 INFO L85 PathProgramCache]: Analyzing trace with hash 364244179, now seen corresponding path program 2 times [2023-11-19 07:34:22,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:22,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626674333] [2023-11-19 07:34:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:22,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:34:22,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:22,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626674333] [2023-11-19 07:34:22,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626674333] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:22,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757648242] [2023-11-19 07:34:22,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:34:22,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:22,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:22,317 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:22,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:34:22,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:34:22,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:34:22,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:34:22,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:22,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:34:22,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:22,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:34:22,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:22,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:34:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:22,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:34:23,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757648242] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:23,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:34:23,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 7] total 13 [2023-11-19 07:34:23,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106573498] [2023-11-19 07:34:23,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:23,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:23,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:23,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:23,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:34:23,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 292 [2023-11-19 07:34:23,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 734 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:23,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:23,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 292 [2023-11-19 07:34:23,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:24,227 INFO L124 PetriNetUnfolderBase]: 1913/3297 cut-off events. [2023-11-19 07:34:24,227 INFO L125 PetriNetUnfolderBase]: For 8914/8914 co-relation queries the response was YES. [2023-11-19 07:34:24,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15276 conditions, 3297 events. 1913/3297 cut-off events. For 8914/8914 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 20607 event pairs, 507 based on Foata normal form. 0/2866 useless extension candidates. Maximal degree in co-relation 11423. Up to 1563 conditions per place. [2023-11-19 07:34:24,258 INFO L140 encePairwiseOnDemand]: 278/292 looper letters, 122 selfloop transitions, 46 changer transitions 0/168 dead transitions. [2023-11-19 07:34:24,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 168 transitions, 1806 flow [2023-11-19 07:34:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:24,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 659 transitions. [2023-11-19 07:34:24,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45136986301369864 [2023-11-19 07:34:24,262 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 659 transitions. [2023-11-19 07:34:24,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 659 transitions. [2023-11-19 07:34:24,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:24,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 659 transitions. [2023-11-19 07:34:24,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:24,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:24,268 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:24,268 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 734 flow. Second operand 5 states and 659 transitions. [2023-11-19 07:34:24,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 168 transitions, 1806 flow [2023-11-19 07:34:24,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 168 transitions, 1784 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:34:24,315 INFO L231 Difference]: Finished difference. Result has 77 places, 109 transitions, 1282 flow [2023-11-19 07:34:24,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1282, PETRI_PLACES=77, PETRI_TRANSITIONS=109} [2023-11-19 07:34:24,316 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2023-11-19 07:34:24,316 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 109 transitions, 1282 flow [2023-11-19 07:34:24,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:24,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:24,317 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:24,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:24,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:34:24,531 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:24,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:24,531 INFO L85 PathProgramCache]: Analyzing trace with hash 364244180, now seen corresponding path program 1 times [2023-11-19 07:34:24,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:24,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322496197] [2023-11-19 07:34:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:24,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:34:24,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:24,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322496197] [2023-11-19 07:34:24,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322496197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:24,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:24,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:24,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519609968] [2023-11-19 07:34:24,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:24,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:24,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:24,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:24,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:24,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 292 [2023-11-19 07:34:24,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 109 transitions, 1282 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:24,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:24,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 292 [2023-11-19 07:34:24,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:25,282 INFO L124 PetriNetUnfolderBase]: 2022/3532 cut-off events. [2023-11-19 07:34:25,282 INFO L125 PetriNetUnfolderBase]: For 18248/18248 co-relation queries the response was YES. [2023-11-19 07:34:25,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18647 conditions, 3532 events. 2022/3532 cut-off events. For 18248/18248 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 22613 event pairs, 394 based on Foata normal form. 165/3465 useless extension candidates. Maximal degree in co-relation 13866. Up to 1324 conditions per place. [2023-11-19 07:34:25,319 INFO L140 encePairwiseOnDemand]: 279/292 looper letters, 123 selfloop transitions, 57 changer transitions 0/180 dead transitions. [2023-11-19 07:34:25,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 180 transitions, 2343 flow [2023-11-19 07:34:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 677 transitions. [2023-11-19 07:34:25,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636986301369863 [2023-11-19 07:34:25,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 677 transitions. [2023-11-19 07:34:25,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 677 transitions. [2023-11-19 07:34:25,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:25,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 677 transitions. [2023-11-19 07:34:25,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:25,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:25,330 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:25,330 INFO L175 Difference]: Start difference. First operand has 77 places, 109 transitions, 1282 flow. Second operand 5 states and 677 transitions. [2023-11-19 07:34:25,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 180 transitions, 2343 flow [2023-11-19 07:34:25,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 180 transitions, 2343 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:25,396 INFO L231 Difference]: Finished difference. Result has 85 places, 141 transitions, 1974 flow [2023-11-19 07:34:25,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1974, PETRI_PLACES=85, PETRI_TRANSITIONS=141} [2023-11-19 07:34:25,397 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 46 predicate places. [2023-11-19 07:34:25,397 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 141 transitions, 1974 flow [2023-11-19 07:34:25,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:25,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:25,398 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:25,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:34:25,398 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:25,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:25,399 INFO L85 PathProgramCache]: Analyzing trace with hash 364244157, now seen corresponding path program 1 times [2023-11-19 07:34:25,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:25,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149857169] [2023-11-19 07:34:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:25,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:25,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:25,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149857169] [2023-11-19 07:34:25,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149857169] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:25,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049836199] [2023-11-19 07:34:25,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:25,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:25,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:25,767 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:25,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:34:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:25,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:34:25,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:25,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:34:25,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:25,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-19 07:34:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:26,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:26,150 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_336 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_336) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-11-19 07:34:26,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:26,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-19 07:34:26,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:26,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-11-19 07:34:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-19 07:34:26,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049836199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:26,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:26,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-11-19 07:34:26,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301810535] [2023-11-19 07:34:26,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:26,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 07:34:26,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:26,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:34:26,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=288, Unknown=1, NotChecked=34, Total=380 [2023-11-19 07:34:26,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 292 [2023-11-19 07:34:26,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 141 transitions, 1974 flow. Second operand has 20 states, 20 states have (on average 94.35) internal successors, (1887), 20 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:26,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:26,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 292 [2023-11-19 07:34:26,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:27,667 INFO L124 PetriNetUnfolderBase]: 2026/3539 cut-off events. [2023-11-19 07:34:27,667 INFO L125 PetriNetUnfolderBase]: For 25979/25979 co-relation queries the response was YES. [2023-11-19 07:34:27,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21231 conditions, 3539 events. 2026/3539 cut-off events. For 25979/25979 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 22668 event pairs, 644 based on Foata normal form. 2/3309 useless extension candidates. Maximal degree in co-relation 15838. Up to 2110 conditions per place. [2023-11-19 07:34:27,709 INFO L140 encePairwiseOnDemand]: 278/292 looper letters, 160 selfloop transitions, 58 changer transitions 0/218 dead transitions. [2023-11-19 07:34:27,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 218 transitions, 3295 flow [2023-11-19 07:34:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:34:27,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 07:34:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1294 transitions. [2023-11-19 07:34:27,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34088514225500527 [2023-11-19 07:34:27,720 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1294 transitions. [2023-11-19 07:34:27,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1294 transitions. [2023-11-19 07:34:27,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:27,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1294 transitions. [2023-11-19 07:34:27,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 99.53846153846153) internal successors, (1294), 13 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:27,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 292.0) internal successors, (4088), 14 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:27,735 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 292.0) internal successors, (4088), 14 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:27,735 INFO L175 Difference]: Start difference. First operand has 85 places, 141 transitions, 1974 flow. Second operand 13 states and 1294 transitions. [2023-11-19 07:34:27,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 218 transitions, 3295 flow [2023-11-19 07:34:27,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 218 transitions, 3281 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:27,843 INFO L231 Difference]: Finished difference. Result has 100 places, 154 transitions, 2274 flow [2023-11-19 07:34:27,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=1966, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2274, PETRI_PLACES=100, PETRI_TRANSITIONS=154} [2023-11-19 07:34:27,844 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 61 predicate places. [2023-11-19 07:34:27,845 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 154 transitions, 2274 flow [2023-11-19 07:34:27,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 94.35) internal successors, (1887), 20 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:27,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:27,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:27,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:28,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:34:28,066 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:28,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:28,066 INFO L85 PathProgramCache]: Analyzing trace with hash 364244177, now seen corresponding path program 1 times [2023-11-19 07:34:28,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:28,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700643823] [2023-11-19 07:34:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:28,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:28,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:28,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700643823] [2023-11-19 07:34:28,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700643823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:28,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132679611] [2023-11-19 07:34:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:28,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:28,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:28,412 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:28,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:34:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:28,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:34:28,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:28,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:34:28,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:28,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:34:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:28,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:28,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:28,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-19 07:34:28,807 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:28,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-11-19 07:34:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:28,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132679611] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:28,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:28,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-11-19 07:34:28,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745638891] [2023-11-19 07:34:28,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:28,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 07:34:28,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:28,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:34:28,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=313, Unknown=5, NotChecked=0, Total=380 [2023-11-19 07:34:29,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 292 [2023-11-19 07:34:29,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 154 transitions, 2274 flow. Second operand has 20 states, 20 states have (on average 96.35) internal successors, (1927), 20 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:29,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:29,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 292 [2023-11-19 07:34:29,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:30,541 INFO L124 PetriNetUnfolderBase]: 2025/3537 cut-off events. [2023-11-19 07:34:30,542 INFO L125 PetriNetUnfolderBase]: For 27911/27911 co-relation queries the response was YES. [2023-11-19 07:34:30,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21848 conditions, 3537 events. 2025/3537 cut-off events. For 27911/27911 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 22528 event pairs, 686 based on Foata normal form. 1/3306 useless extension candidates. Maximal degree in co-relation 18217. Up to 2109 conditions per place. [2023-11-19 07:34:30,583 INFO L140 encePairwiseOnDemand]: 280/292 looper letters, 133 selfloop transitions, 57 changer transitions 0/190 dead transitions. [2023-11-19 07:34:30,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 190 transitions, 3076 flow [2023-11-19 07:34:30,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:34:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:34:30,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1114 transitions. [2023-11-19 07:34:30,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468244084682441 [2023-11-19 07:34:30,588 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1114 transitions. [2023-11-19 07:34:30,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1114 transitions. [2023-11-19 07:34:30,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:30,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1114 transitions. [2023-11-19 07:34:30,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 101.27272727272727) internal successors, (1114), 11 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:30,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:30,598 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:30,598 INFO L175 Difference]: Start difference. First operand has 100 places, 154 transitions, 2274 flow. Second operand 11 states and 1114 transitions. [2023-11-19 07:34:30,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 190 transitions, 3076 flow [2023-11-19 07:34:30,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 190 transitions, 3050 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-19 07:34:30,714 INFO L231 Difference]: Finished difference. Result has 107 places, 152 transitions, 2335 flow [2023-11-19 07:34:30,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2335, PETRI_PLACES=107, PETRI_TRANSITIONS=152} [2023-11-19 07:34:30,715 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2023-11-19 07:34:30,715 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 152 transitions, 2335 flow [2023-11-19 07:34:30,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 96.35) internal successors, (1927), 20 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:30,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:30,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:30,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:30,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:34:30,931 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:30,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:30,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1742819822, now seen corresponding path program 1 times [2023-11-19 07:34:30,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:30,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208535492] [2023-11-19 07:34:30,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:30,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:31,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:31,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208535492] [2023-11-19 07:34:31,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208535492] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:31,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105880925] [2023-11-19 07:34:31,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:31,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:31,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:31,028 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:31,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:34:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:31,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:34:31,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:31,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:31,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105880925] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:31,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:31,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-19 07:34:31,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181387346] [2023-11-19 07:34:31,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:31,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:34:31,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:34:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:34:31,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 292 [2023-11-19 07:34:31,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 152 transitions, 2335 flow. Second operand has 14 states, 14 states have (on average 109.64285714285714) internal successors, (1535), 14 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:31,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:31,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 292 [2023-11-19 07:34:31,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:32,299 INFO L124 PetriNetUnfolderBase]: 1703/2967 cut-off events. [2023-11-19 07:34:32,299 INFO L125 PetriNetUnfolderBase]: For 26606/26606 co-relation queries the response was YES. [2023-11-19 07:34:32,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18787 conditions, 2967 events. 1703/2967 cut-off events. For 26606/26606 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 18147 event pairs, 948 based on Foata normal form. 146/2917 useless extension candidates. Maximal degree in co-relation 16697. Up to 2599 conditions per place. [2023-11-19 07:34:32,331 INFO L140 encePairwiseOnDemand]: 281/292 looper letters, 159 selfloop transitions, 7 changer transitions 24/190 dead transitions. [2023-11-19 07:34:32,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 190 transitions, 3125 flow [2023-11-19 07:34:32,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:32,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:34:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 827 transitions. [2023-11-19 07:34:32,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40459882583170254 [2023-11-19 07:34:32,335 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 827 transitions. [2023-11-19 07:34:32,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 827 transitions. [2023-11-19 07:34:32,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:32,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 827 transitions. [2023-11-19 07:34:32,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:32,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:32,342 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:32,342 INFO L175 Difference]: Start difference. First operand has 107 places, 152 transitions, 2335 flow. Second operand 7 states and 827 transitions. [2023-11-19 07:34:32,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 190 transitions, 3125 flow [2023-11-19 07:34:32,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 190 transitions, 3065 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-19 07:34:32,437 INFO L231 Difference]: Finished difference. Result has 109 places, 143 transitions, 2136 flow [2023-11-19 07:34:32,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2136, PETRI_PLACES=109, PETRI_TRANSITIONS=143} [2023-11-19 07:34:32,438 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2023-11-19 07:34:32,438 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 143 transitions, 2136 flow [2023-11-19 07:34:32,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 109.64285714285714) internal successors, (1535), 14 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:32,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:32,439 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:32,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:32,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:32,660 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:32,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1489059495, now seen corresponding path program 1 times [2023-11-19 07:34:32,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:32,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853685471] [2023-11-19 07:34:32,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:32,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:33,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:33,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853685471] [2023-11-19 07:34:33,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853685471] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:33,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170399647] [2023-11-19 07:34:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:33,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:33,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:33,035 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:33,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:34:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:33,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:34:33,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:33,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:34:33,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:33,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:34:33,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:33,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:34:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:33,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:33,494 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_417 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_417) c_~A~0.base) (+ c_~A~0.offset 4)) 4294967296)) is different from false [2023-11-19 07:34:33,508 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_416 (Array Int Int)) (v_ArrVal_417 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_416) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_417) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)) is different from false [2023-11-19 07:34:33,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:33,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-19 07:34:33,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:33,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-11-19 07:34:33,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-11-19 07:34:33,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-19 07:34:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-19 07:34:33,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170399647] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:33,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:33,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-19 07:34:33,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562209893] [2023-11-19 07:34:33,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:33,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-19 07:34:33,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:33,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-19 07:34:33,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=355, Unknown=2, NotChecked=78, Total=506 [2023-11-19 07:34:33,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 292 [2023-11-19 07:34:33,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 143 transitions, 2136 flow. Second operand has 23 states, 23 states have (on average 91.30434782608695) internal successors, (2100), 23 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:33,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:33,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 292 [2023-11-19 07:34:33,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:35,509 INFO L124 PetriNetUnfolderBase]: 2278/3890 cut-off events. [2023-11-19 07:34:35,509 INFO L125 PetriNetUnfolderBase]: For 42107/42107 co-relation queries the response was YES. [2023-11-19 07:34:35,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26163 conditions, 3890 events. 2278/3890 cut-off events. For 42107/42107 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24292 event pairs, 553 based on Foata normal form. 187/3841 useless extension candidates. Maximal degree in co-relation 24989. Up to 1454 conditions per place. [2023-11-19 07:34:35,558 INFO L140 encePairwiseOnDemand]: 278/292 looper letters, 206 selfloop transitions, 69 changer transitions 2/277 dead transitions. [2023-11-19 07:34:35,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 277 transitions, 4385 flow [2023-11-19 07:34:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:34:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:34:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1112 transitions. [2023-11-19 07:34:35,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34620174346201743 [2023-11-19 07:34:35,562 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1112 transitions. [2023-11-19 07:34:35,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1112 transitions. [2023-11-19 07:34:35,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:35,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1112 transitions. [2023-11-19 07:34:35,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 101.0909090909091) internal successors, (1112), 11 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:35,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:35,571 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:35,572 INFO L175 Difference]: Start difference. First operand has 109 places, 143 transitions, 2136 flow. Second operand 11 states and 1112 transitions. [2023-11-19 07:34:35,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 277 transitions, 4385 flow [2023-11-19 07:34:35,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 277 transitions, 4372 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-19 07:34:35,686 INFO L231 Difference]: Finished difference. Result has 118 places, 168 transitions, 2867 flow [2023-11-19 07:34:35,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2867, PETRI_PLACES=118, PETRI_TRANSITIONS=168} [2023-11-19 07:34:35,687 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 79 predicate places. [2023-11-19 07:34:35,687 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 168 transitions, 2867 flow [2023-11-19 07:34:35,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 91.30434782608695) internal successors, (2100), 23 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:35,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:35,688 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:35,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:35,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:35,907 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:35,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1489059515, now seen corresponding path program 1 times [2023-11-19 07:34:35,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:35,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927643324] [2023-11-19 07:34:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:35,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:36,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:36,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927643324] [2023-11-19 07:34:36,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927643324] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:36,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067955503] [2023-11-19 07:34:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:36,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:36,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:36,239 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:36,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d2d8e70-9e37-499b-aacc-34b81be8ee1b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:34:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:36,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:34:36,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:36,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:34:36,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:36,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-19 07:34:36,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:36,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-19 07:34:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:36,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:36,676 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_448 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_448) c_~A~0.base) (+ c_~A~0.offset 4))))) is different from false [2023-11-19 07:34:36,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:36,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-19 07:34:36,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:36,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-11-19 07:34:36,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-11-19 07:34:36,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-11-19 07:34:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:36,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067955503] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:36,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:36,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-19 07:34:36,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638071441] [2023-11-19 07:34:36,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:36,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-19 07:34:36,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:36,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-19 07:34:36,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=388, Unknown=5, NotChecked=40, Total=506 [2023-11-19 07:34:36,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 292 [2023-11-19 07:34:36,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 168 transitions, 2867 flow. Second operand has 23 states, 23 states have (on average 91.30434782608695) internal successors, (2100), 23 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:36,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:36,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 292 [2023-11-19 07:34:36,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand