./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:01:04,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:01:04,651 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:01:04,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:01:04,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:01:04,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:01:04,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:01:04,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:01:04,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:01:04,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:01:04,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:01:04,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:01:04,688 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:01:04,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:01:04,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:01:04,690 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:01:04,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:01:04,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:01:04,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:01:04,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:01:04,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:01:04,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:01:04,693 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:01:04,694 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:01:04,694 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:01:04,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:01:04,695 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:01:04,695 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:01:04,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:01:04,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:01:04,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:01:04,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:01:04,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:01:04,697 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:01:04,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:01:04,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:01:04,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:01:04,698 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:01:04,698 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:01:04,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:01:04,699 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:01:04,699 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_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2023-11-06 22:01:05,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:01:05,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:01:05,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:01:05,050 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:01:05,051 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:01:05,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2023-11-06 22:01:08,396 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:01:08,647 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:01:08,648 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2023-11-06 22:01:08,660 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/data/6740eb836/5054a7388796454c9693c9602a9922a9/FLAG1d11a1af5 [2023-11-06 22:01:08,679 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/data/6740eb836/5054a7388796454c9693c9602a9922a9 [2023-11-06 22:01:08,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:01:08,687 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:01:08,689 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:01:08,689 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:01:08,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:01:08,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:01:08" (1/1) ... [2023-11-06 22:01:08,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b2c156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:08, skipping insertion in model container [2023-11-06 22:01:08,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:01:08" (1/1) ... [2023-11-06 22:01:08,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:01:08,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:01:08,954 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:01:08,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:01:09,004 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:01:09,004 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:01:09,016 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:01:09,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09 WrapperNode [2023-11-06 22:01:09,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:01:09,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:01:09,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:01:09,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:01:09,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09" (1/1) ... [2023-11-06 22:01:09,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09" (1/1) ... [2023-11-06 22:01:09,082 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 293 [2023-11-06 22:01:09,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:01:09,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:01:09,100 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:01:09,100 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:01:09,112 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09" (1/1) ... [2023-11-06 22:01:09,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09" (1/1) ... [2023-11-06 22:01:09,118 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09" (1/1) ... [2023-11-06 22:01:09,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09" (1/1) ... [2023-11-06 22:01:09,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09" (1/1) ... [2023-11-06 22:01:09,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09" (1/1) ... [2023-11-06 22:01:09,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09" (1/1) ... [2023-11-06 22:01:09,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09" (1/1) ... [2023-11-06 22:01:09,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:01:09,152 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:01:09,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:01:09,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:01:09,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09" (1/1) ... [2023-11-06 22:01:09,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:01:09,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:09,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:01:09,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:01:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:01:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:01:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:01:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:01:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:01:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:01:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:01:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:01:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:01:09,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:01:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:01:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:01:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:01:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:01:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:01:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:01:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:01:09,257 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:01:09,380 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:01:09,381 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:01:10,245 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:01:10,628 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:01:10,629 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:01:10,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:10 BoogieIcfgContainer [2023-11-06 22:01:10,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:01:10,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:01:10,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:01:10,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:01:10,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:01:08" (1/3) ... [2023-11-06 22:01:10,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf99d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:10, skipping insertion in model container [2023-11-06 22:01:10,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:09" (2/3) ... [2023-11-06 22:01:10,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf99d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:10, skipping insertion in model container [2023-11-06 22:01:10,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:10" (3/3) ... [2023-11-06 22:01:10,650 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2023-11-06 22:01:10,661 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:01:10,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:01:10,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-06 22:01:10,673 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:01:10,872 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:01:10,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 399 transitions, 819 flow [2023-11-06 22:01:11,091 INFO L124 PetriNetUnfolderBase]: 31/396 cut-off events. [2023-11-06 22:01:11,092 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:01:11,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 396 events. 31/396 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 436 event pairs, 0 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 299. Up to 2 conditions per place. [2023-11-06 22:01:11,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 399 transitions, 819 flow [2023-11-06 22:01:11,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 367 transitions, 752 flow [2023-11-06 22:01:11,117 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:01:11,129 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 367 transitions, 752 flow [2023-11-06 22:01:11,132 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 367 transitions, 752 flow [2023-11-06 22:01:11,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 367 transitions, 752 flow [2023-11-06 22:01:11,217 INFO L124 PetriNetUnfolderBase]: 30/367 cut-off events. [2023-11-06 22:01:11,218 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:01:11,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 367 events. 30/367 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 433 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 299. Up to 2 conditions per place. [2023-11-06 22:01:11,227 INFO L119 LiptonReduction]: Number of co-enabled transitions 5064 [2023-11-06 22:01:37,173 INFO L134 LiptonReduction]: Checked pairs total: 9853 [2023-11-06 22:01:37,174 INFO L136 LiptonReduction]: Total number of compositions: 437 [2023-11-06 22:01:37,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:01:37,198 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@13e0b18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:01:37,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-11-06 22:01:37,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:01:37,201 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:01:37,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:01:37,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:37,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:01:37,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:01:37,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 52424, now seen corresponding path program 1 times [2023-11-06 22:01:37,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:37,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678230513] [2023-11-06 22:01:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:37,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:37,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:37,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678230513] [2023-11-06 22:01:37,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678230513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:37,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:37,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:01:37,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22425461] [2023-11-06 22:01:37,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:37,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:37,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:37,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:37,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:01:37,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 836 [2023-11-06 22:01:37,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 349.6666666666667) internal successors, (1049), 3 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:37,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:37,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 836 [2023-11-06 22:01:37,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:38,831 INFO L124 PetriNetUnfolderBase]: 4546/5887 cut-off events. [2023-11-06 22:01:38,832 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2023-11-06 22:01:38,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11916 conditions, 5887 events. 4546/5887 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 26646 event pairs, 2387 based on Foata normal form. 0/2378 useless extension candidates. Maximal degree in co-relation 10798. Up to 5777 conditions per place. [2023-11-06 22:01:38,890 INFO L140 encePairwiseOnDemand]: 811/836 looper letters, 54 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2023-11-06 22:01:38,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 286 flow [2023-11-06 22:01:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:01:38,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1128 transitions. [2023-11-06 22:01:38,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2023-11-06 22:01:38,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1128 transitions. [2023-11-06 22:01:38,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1128 transitions. [2023-11-06 22:01:38,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:38,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1128 transitions. [2023-11-06 22:01:38,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:38,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:38,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:38,950 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 152 flow. Second operand 3 states and 1128 transitions. [2023-11-06 22:01:38,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 286 flow [2023-11-06 22:01:38,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 274 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:01:38,971 INFO L231 Difference]: Finished difference. Result has 59 places, 69 transitions, 220 flow [2023-11-06 22:01:38,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=59, PETRI_TRANSITIONS=69} [2023-11-06 22:01:38,980 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -10 predicate places. [2023-11-06 22:01:38,980 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 69 transitions, 220 flow [2023-11-06 22:01:38,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 349.6666666666667) internal successors, (1049), 3 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:38,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:38,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:01:38,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:01:38,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:01:38,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:38,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1626760, now seen corresponding path program 1 times [2023-11-06 22:01:38,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:38,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585769961] [2023-11-06 22:01:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:38,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:39,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:39,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585769961] [2023-11-06 22:01:39,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585769961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:39,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351781981] [2023-11-06 22:01:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:39,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:39,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:39,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:39,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:01:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:39,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:01:39,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:39,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:01:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:39,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351781981] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:01:39,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:01:39,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:01:39,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829160448] [2023-11-06 22:01:39,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:01:39,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:01:39,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:39,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:01:39,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:01:39,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 836 [2023-11-06 22:01:39,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 69 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 350.14285714285717) internal successors, (2451), 7 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:39,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:39,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 836 [2023-11-06 22:01:39,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:40,617 INFO L124 PetriNetUnfolderBase]: 4576/5926 cut-off events. [2023-11-06 22:01:40,618 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-06 22:01:40,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11924 conditions, 5926 events. 4576/5926 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 26820 event pairs, 2387 based on Foata normal form. 0/2397 useless extension candidates. Maximal degree in co-relation 11705. Up to 5789 conditions per place. [2023-11-06 22:01:40,668 INFO L140 encePairwiseOnDemand]: 819/836 looper letters, 51 selfloop transitions, 53 changer transitions 0/108 dead transitions. [2023-11-06 22:01:40,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 596 flow [2023-11-06 22:01:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:01:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:01:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2556 transitions. [2023-11-06 22:01:40,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43677375256322626 [2023-11-06 22:01:40,678 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2556 transitions. [2023-11-06 22:01:40,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2556 transitions. [2023-11-06 22:01:40,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:40,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2556 transitions. [2023-11-06 22:01:40,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 365.14285714285717) internal successors, (2556), 7 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:40,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:40,707 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:40,707 INFO L175 Difference]: Start difference. First operand has 59 places, 69 transitions, 220 flow. Second operand 7 states and 2556 transitions. [2023-11-06 22:01:40,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 596 flow [2023-11-06 22:01:40,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 108 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:01:40,712 INFO L231 Difference]: Finished difference. Result has 66 places, 108 transitions, 542 flow [2023-11-06 22:01:40,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=66, PETRI_TRANSITIONS=108} [2023-11-06 22:01:40,713 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-11-06 22:01:40,714 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 108 transitions, 542 flow [2023-11-06 22:01:40,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 350.14285714285717) internal successors, (2451), 7 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:40,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:40,716 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 22:01:40,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:40,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:40,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:01:40,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:40,930 INFO L85 PathProgramCache]: Analyzing trace with hash 50431144, now seen corresponding path program 1 times [2023-11-06 22:01:40,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:40,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841152894] [2023-11-06 22:01:40,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:40,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:41,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841152894] [2023-11-06 22:01:41,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841152894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:41,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217199800] [2023-11-06 22:01:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:41,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:41,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:41,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:41,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:01:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:41,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:01:41,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:41,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:41,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217199800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:41,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:01:41,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:01:41,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159061141] [2023-11-06 22:01:41,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:41,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:01:41,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:41,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:01:41,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:01:41,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 836 [2023-11-06 22:01:41,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 108 transitions, 542 flow. Second operand has 5 states, 5 states have (on average 349.8) internal successors, (1749), 5 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:41,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:41,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 836 [2023-11-06 22:01:41,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:42,391 INFO L124 PetriNetUnfolderBase]: 4567/5914 cut-off events. [2023-11-06 22:01:42,391 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-06 22:01:42,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11962 conditions, 5914 events. 4567/5914 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 26783 event pairs, 2387 based on Foata normal form. 0/2399 useless extension candidates. Maximal degree in co-relation 11832. Up to 5780 conditions per place. [2023-11-06 22:01:42,451 INFO L140 encePairwiseOnDemand]: 822/836 looper letters, 52 selfloop transitions, 40 changer transitions 0/96 dead transitions. [2023-11-06 22:01:42,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 96 transitions, 645 flow [2023-11-06 22:01:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:01:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:01:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1823 transitions. [2023-11-06 22:01:42,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361244019138756 [2023-11-06 22:01:42,459 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1823 transitions. [2023-11-06 22:01:42,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1823 transitions. [2023-11-06 22:01:42,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:42,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1823 transitions. [2023-11-06 22:01:42,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 364.6) internal successors, (1823), 5 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:42,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 836.0) internal successors, (5016), 6 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:42,481 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 836.0) internal successors, (5016), 6 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:42,481 INFO L175 Difference]: Start difference. First operand has 66 places, 108 transitions, 542 flow. Second operand 5 states and 1823 transitions. [2023-11-06 22:01:42,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 96 transitions, 645 flow [2023-11-06 22:01:42,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 580 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-11-06 22:01:42,486 INFO L231 Difference]: Finished difference. Result has 65 places, 96 transitions, 476 flow [2023-11-06 22:01:42,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=65, PETRI_TRANSITIONS=96} [2023-11-06 22:01:42,487 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2023-11-06 22:01:42,488 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 96 transitions, 476 flow [2023-11-06 22:01:42,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 349.8) internal successors, (1749), 5 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:42,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:42,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:01:42,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:42,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 22:01:42,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:01:42,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:42,696 INFO L85 PathProgramCache]: Analyzing trace with hash 50484338, now seen corresponding path program 1 times [2023-11-06 22:01:42,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:42,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507053244] [2023-11-06 22:01:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:42,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:42,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:42,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507053244] [2023-11-06 22:01:42,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507053244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:42,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:42,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:01:42,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380678064] [2023-11-06 22:01:42,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:42,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:42,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:42,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:42,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:01:42,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 836 [2023-11-06 22:01:42,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 96 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 345.3333333333333) internal successors, (1036), 3 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:42,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:42,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 836 [2023-11-06 22:01:42,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:43,971 INFO L124 PetriNetUnfolderBase]: 4566/5913 cut-off events. [2023-11-06 22:01:43,972 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-06 22:01:43,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11967 conditions, 5913 events. 4566/5913 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 26810 event pairs, 2387 based on Foata normal form. 1/2405 useless extension candidates. Maximal degree in co-relation 11837. Up to 5807 conditions per place. [2023-11-06 22:01:44,017 INFO L140 encePairwiseOnDemand]: 833/836 looper letters, 89 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-11-06 22:01:44,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 95 transitions, 654 flow [2023-11-06 22:01:44,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:01:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1086 transitions. [2023-11-06 22:01:44,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43301435406698563 [2023-11-06 22:01:44,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1086 transitions. [2023-11-06 22:01:44,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1086 transitions. [2023-11-06 22:01:44,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:44,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1086 transitions. [2023-11-06 22:01:44,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:44,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:44,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:44,036 INFO L175 Difference]: Start difference. First operand has 65 places, 96 transitions, 476 flow. Second operand 3 states and 1086 transitions. [2023-11-06 22:01:44,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 95 transitions, 654 flow [2023-11-06 22:01:44,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 95 transitions, 598 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:01:44,041 INFO L231 Difference]: Finished difference. Result has 64 places, 95 transitions, 420 flow [2023-11-06 22:01:44,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=64, PETRI_TRANSITIONS=95} [2023-11-06 22:01:44,042 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2023-11-06 22:01:44,043 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 95 transitions, 420 flow [2023-11-06 22:01:44,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 345.3333333333333) internal successors, (1036), 3 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:44,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:44,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:01:44,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:01:44,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:01:44,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:44,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1563420273, now seen corresponding path program 1 times [2023-11-06 22:01:44,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:44,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540705816] [2023-11-06 22:01:44,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:44,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:44,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:44,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540705816] [2023-11-06 22:01:44,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540705816] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:44,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233770025] [2023-11-06 22:01:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:44,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:44,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:44,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:44,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:01:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:44,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:01:44,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:44,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:44,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233770025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:44,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:01:44,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-06 22:01:44,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436656938] [2023-11-06 22:01:44,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:44,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:01:44,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:01:44,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:01:44,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 836 [2023-11-06 22:01:44,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 95 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 345.25) internal successors, (1381), 4 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:44,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:44,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 836 [2023-11-06 22:01:44,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:45,473 INFO L124 PetriNetUnfolderBase]: 4560/5907 cut-off events. [2023-11-06 22:01:45,473 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-06 22:01:45,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11909 conditions, 5907 events. 4560/5907 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 26783 event pairs, 2387 based on Foata normal form. 2/2404 useless extension candidates. Maximal degree in co-relation 11892. Up to 5792 conditions per place. [2023-11-06 22:01:45,513 INFO L140 encePairwiseOnDemand]: 825/836 looper letters, 73 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2023-11-06 22:01:45,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 561 flow [2023-11-06 22:01:45,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:01:45,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:01:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1437 transitions. [2023-11-06 22:01:45,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297248803827751 [2023-11-06 22:01:45,520 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1437 transitions. [2023-11-06 22:01:45,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1437 transitions. [2023-11-06 22:01:45,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:45,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1437 transitions. [2023-11-06 22:01:45,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 359.25) internal successors, (1437), 4 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:45,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:45,537 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:45,537 INFO L175 Difference]: Start difference. First operand has 64 places, 95 transitions, 420 flow. Second operand 4 states and 1437 transitions. [2023-11-06 22:01:45,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 561 flow [2023-11-06 22:01:45,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 557 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:01:45,542 INFO L231 Difference]: Finished difference. Result has 66 places, 89 transitions, 411 flow [2023-11-06 22:01:45,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=66, PETRI_TRANSITIONS=89} [2023-11-06 22:01:45,543 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-11-06 22:01:45,543 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 89 transitions, 411 flow [2023-11-06 22:01:45,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 345.25) internal successors, (1381), 4 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:45,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:45,544 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:01:45,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:45,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:45,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:01:45,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:45,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1219740809, now seen corresponding path program 2 times [2023-11-06 22:01:45,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:45,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542303628] [2023-11-06 22:01:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:45,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:45,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:45,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542303628] [2023-11-06 22:01:45,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542303628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:45,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643014809] [2023-11-06 22:01:45,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:01:45,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:45,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:45,857 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:45,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:01:45,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:01:45,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:01:45,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:01:45,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:01:46,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:46,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643014809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:46,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:01:46,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:01:46,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165461657] [2023-11-06 22:01:46,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:46,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:46,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:46,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:46,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:01:46,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 836 [2023-11-06 22:01:46,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 89 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:46,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:46,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 836 [2023-11-06 22:01:46,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:46,889 INFO L124 PetriNetUnfolderBase]: 4560/5906 cut-off events. [2023-11-06 22:01:46,890 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-06 22:01:46,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 5906 events. 4560/5906 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 26749 event pairs, 2387 based on Foata normal form. 1/2402 useless extension candidates. Maximal degree in co-relation 11808. Up to 5795 conditions per place. [2023-11-06 22:01:46,925 INFO L140 encePairwiseOnDemand]: 833/836 looper letters, 79 selfloop transitions, 5 changer transitions 0/88 dead transitions. [2023-11-06 22:01:46,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 569 flow [2023-11-06 22:01:46,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:46,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:01:46,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1117 transitions. [2023-11-06 22:01:46,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44537480063795853 [2023-11-06 22:01:46,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1117 transitions. [2023-11-06 22:01:46,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1117 transitions. [2023-11-06 22:01:46,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:46,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1117 transitions. [2023-11-06 22:01:46,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:46,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:46,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:46,946 INFO L175 Difference]: Start difference. First operand has 66 places, 89 transitions, 411 flow. Second operand 3 states and 1117 transitions. [2023-11-06 22:01:46,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 569 flow [2023-11-06 22:01:46,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 545 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:01:46,951 INFO L231 Difference]: Finished difference. Result has 64 places, 88 transitions, 387 flow [2023-11-06 22:01:46,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=64, PETRI_TRANSITIONS=88} [2023-11-06 22:01:46,954 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2023-11-06 22:01:46,954 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 88 transitions, 387 flow [2023-11-06 22:01:46,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:46,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:46,955 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:46,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:47,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:01:47,161 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:01:47,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1176358391, now seen corresponding path program 1 times [2023-11-06 22:01:47,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:47,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323689107] [2023-11-06 22:01:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:47,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:47,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:47,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323689107] [2023-11-06 22:01:47,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323689107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:47,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504746316] [2023-11-06 22:01:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:47,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:47,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:47,355 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:47,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:01:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:47,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:01:47,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:47,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:01:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:47,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504746316] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:01:47,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:01:47,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-06 22:01:47,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180425058] [2023-11-06 22:01:47,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:01:47,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:01:47,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:47,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:01:47,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:01:48,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 836 [2023-11-06 22:01:48,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 88 transitions, 387 flow. Second operand has 14 states, 14 states have (on average 339.35714285714283) internal successors, (4751), 14 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:48,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:48,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 836 [2023-11-06 22:01:48,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:49,971 INFO L124 PetriNetUnfolderBase]: 8505/11012 cut-off events. [2023-11-06 22:01:49,971 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-11-06 22:01:49,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22141 conditions, 11012 events. 8505/11012 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 53530 event pairs, 4461 based on Foata normal form. 2/4564 useless extension candidates. Maximal degree in co-relation 22029. Up to 5712 conditions per place. [2023-11-06 22:01:50,043 INFO L140 encePairwiseOnDemand]: 822/836 looper letters, 99 selfloop transitions, 30 changer transitions 0/133 dead transitions. [2023-11-06 22:01:50,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 133 transitions, 768 flow [2023-11-06 22:01:50,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:01:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:01:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2816 transitions. [2023-11-06 22:01:50,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2023-11-06 22:01:50,056 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2816 transitions. [2023-11-06 22:01:50,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2816 transitions. [2023-11-06 22:01:50,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:50,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2816 transitions. [2023-11-06 22:01:50,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:50,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 836.0) internal successors, (7524), 9 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:50,086 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 836.0) internal successors, (7524), 9 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:50,086 INFO L175 Difference]: Start difference. First operand has 64 places, 88 transitions, 387 flow. Second operand 8 states and 2816 transitions. [2023-11-06 22:01:50,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 133 transitions, 768 flow [2023-11-06 22:01:50,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 758 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:01:50,091 INFO L231 Difference]: Finished difference. Result has 70 places, 96 transitions, 492 flow [2023-11-06 22:01:50,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=492, PETRI_PLACES=70, PETRI_TRANSITIONS=96} [2023-11-06 22:01:50,092 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 1 predicate places. [2023-11-06 22:01:50,093 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 96 transitions, 492 flow [2023-11-06 22:01:50,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 339.35714285714283) internal successors, (4751), 14 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:50,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:50,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:50,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:01:50,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:50,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:01:50,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:50,302 INFO L85 PathProgramCache]: Analyzing trace with hash -793336950, now seen corresponding path program 1 times [2023-11-06 22:01:50,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:50,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716619023] [2023-11-06 22:01:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:50,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:50,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:50,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716619023] [2023-11-06 22:01:50,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716619023] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684536655] [2023-11-06 22:01:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:50,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:50,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:50,792 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:50,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:01:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:50,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:01:50,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:50,989 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-06 22:01:51,014 INFO L351 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 [2023-11-06 22:01:51,039 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:01:51,040 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-11-06 22:01:51,069 INFO L351 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 [2023-11-06 22:01:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:51,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:01:51,201 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:51,202 INFO L351 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 [2023-11-06 22:01:51,219 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:51,219 INFO L351 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 [2023-11-06 22:01:51,230 INFO L351 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 9 treesize of output 7 [2023-11-06 22:01:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:51,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684536655] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:01:51,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:01:51,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 22:01:51,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15931181] [2023-11-06 22:01:51,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:01:51,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:01:51,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:51,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:01:51,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2023-11-06 22:01:53,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:01:56,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:01:58,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:01:58,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 836 [2023-11-06 22:01:58,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 96 transitions, 492 flow. Second operand has 12 states, 12 states have (on average 325.25) internal successors, (3903), 12 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:58,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:58,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 836 [2023-11-06 22:01:58,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:59,840 INFO L124 PetriNetUnfolderBase]: 8563/11097 cut-off events. [2023-11-06 22:01:59,840 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2023-11-06 22:01:59,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22565 conditions, 11097 events. 8563/11097 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 53867 event pairs, 4496 based on Foata normal form. 0/4807 useless extension candidates. Maximal degree in co-relation 22456. Up to 10853 conditions per place. [2023-11-06 22:01:59,905 INFO L140 encePairwiseOnDemand]: 825/836 looper letters, 52 selfloop transitions, 35 changer transitions 0/91 dead transitions. [2023-11-06 22:01:59,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 631 flow [2023-11-06 22:01:59,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:01:59,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:01:59,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2322 transitions. [2023-11-06 22:01:59,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967874231032126 [2023-11-06 22:01:59,920 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2322 transitions. [2023-11-06 22:01:59,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2322 transitions. [2023-11-06 22:01:59,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:59,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2322 transitions. [2023-11-06 22:01:59,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 331.7142857142857) internal successors, (2322), 7 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:59,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:59,942 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:59,942 INFO L175 Difference]: Start difference. First operand has 70 places, 96 transitions, 492 flow. Second operand 7 states and 2322 transitions. [2023-11-06 22:01:59,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 631 flow [2023-11-06 22:01:59,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 91 transitions, 574 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 22:01:59,948 INFO L231 Difference]: Finished difference. Result has 72 places, 91 transitions, 470 flow [2023-11-06 22:01:59,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=470, PETRI_PLACES=72, PETRI_TRANSITIONS=91} [2023-11-06 22:01:59,952 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2023-11-06 22:01:59,952 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 91 transitions, 470 flow [2023-11-06 22:01:59,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 325.25) internal successors, (3903), 12 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:59,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:59,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:59,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:00,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:00,162 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:02:00,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:00,163 INFO L85 PathProgramCache]: Analyzing trace with hash -793336938, now seen corresponding path program 1 times [2023-11-06 22:02:00,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:00,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085377243] [2023-11-06 22:02:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:00,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:00,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:00,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085377243] [2023-11-06 22:02:00,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085377243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675229363] [2023-11-06 22:02:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:00,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:00,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:00,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:00,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:02:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:00,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 22:02:00,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:00,952 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-06 22:02:00,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:00,962 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:00,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:00,976 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:02:00,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:00,985 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:00,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:00,991 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:02:00,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:00,998 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:01,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,011 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:01,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,022 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:02:01,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,028 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:02:01,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,036 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:01,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,047 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:02:01,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,054 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:01,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,072 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:02:01,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,084 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:01,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,100 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:02:01,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,115 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:02:01,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,126 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:01,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:02:01,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,162 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:02:01,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,170 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:01,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,175 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:02:01,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,184 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:01,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,193 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:02:01,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:01,200 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:01,216 INFO L351 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 [2023-11-06 22:02:01,251 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:02:01,251 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:02:01,272 INFO L351 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 [2023-11-06 22:02:01,290 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:02:01,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-11-06 22:02:01,305 INFO L351 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 [2023-11-06 22:02:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:01,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:01,608 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:02:01,608 INFO L351 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 [2023-11-06 22:02:01,624 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:02:01,625 INFO L351 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 [2023-11-06 22:02:01,638 INFO L351 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 [2023-11-06 22:02:01,647 INFO L351 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 [2023-11-06 22:02:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:01,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675229363] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:01,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:01,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:02:01,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714353513] [2023-11-06 22:02:01,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:01,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:02:01,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:01,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:02:01,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=138, Unknown=2, NotChecked=0, Total=182 [2023-11-06 22:02:02,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 836 [2023-11-06 22:02:02,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 91 transitions, 470 flow. Second operand has 14 states, 14 states have (on average 302.0) internal successors, (4228), 14 states have internal predecessors, (4228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:02,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:02,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 836 [2023-11-06 22:02:02,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:03,622 INFO L124 PetriNetUnfolderBase]: 8560/11092 cut-off events. [2023-11-06 22:02:03,622 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2023-11-06 22:02:03,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22544 conditions, 11092 events. 8560/11092 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 53912 event pairs, 4496 based on Foata normal form. 0/4807 useless extension candidates. Maximal degree in co-relation 22439. Up to 10853 conditions per place. [2023-11-06 22:02:03,680 INFO L140 encePairwiseOnDemand]: 826/836 looper letters, 52 selfloop transitions, 30 changer transitions 0/86 dead transitions. [2023-11-06 22:02:03,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 86 transitions, 593 flow [2023-11-06 22:02:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:02:03,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:02:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2160 transitions. [2023-11-06 22:02:03,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36910457963089544 [2023-11-06 22:02:03,690 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2160 transitions. [2023-11-06 22:02:03,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2160 transitions. [2023-11-06 22:02:03,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:03,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2160 transitions. [2023-11-06 22:02:03,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 308.57142857142856) internal successors, (2160), 7 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:03,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:03,711 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:03,711 INFO L175 Difference]: Start difference. First operand has 72 places, 91 transitions, 470 flow. Second operand 7 states and 2160 transitions. [2023-11-06 22:02:03,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 86 transitions, 593 flow [2023-11-06 22:02:03,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 583 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:02:03,716 INFO L231 Difference]: Finished difference. Result has 76 places, 86 transitions, 479 flow [2023-11-06 22:02:03,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=479, PETRI_PLACES=76, PETRI_TRANSITIONS=86} [2023-11-06 22:02:03,717 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 7 predicate places. [2023-11-06 22:02:03,718 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 86 transitions, 479 flow [2023-11-06 22:02:03,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 302.0) internal successors, (4228), 14 states have internal predecessors, (4228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:03,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:03,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:03,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 22:02:03,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:03,925 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:02:03,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:03,925 INFO L85 PathProgramCache]: Analyzing trace with hash -793336936, now seen corresponding path program 2 times [2023-11-06 22:02:03,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:03,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523315743] [2023-11-06 22:02:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:03,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:04,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:04,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523315743] [2023-11-06 22:02:04,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523315743] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:04,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091492673] [2023-11-06 22:02:04,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:02:04,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:04,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:04,415 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:04,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:02:04,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:02:04,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:04,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:02:04,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:04,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-06 22:02:04,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,610 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:04,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,617 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:04,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,622 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:02:04,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,632 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:02:04,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,638 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:04,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,645 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:02:04,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:04,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,661 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:02:04,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,667 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:04,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,677 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:04,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,682 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:02:04,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,695 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:02:04,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:04,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,716 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:02:04,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,725 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:04,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,737 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:02:04,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,752 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:02:04,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,761 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:04,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,770 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:02:04,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,776 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:02:04,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,782 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:04,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,788 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:02:04,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:04,797 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:02:04,823 INFO L351 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 [2023-11-06 22:02:04,878 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 22:02:04,878 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 22:02:04,919 INFO L351 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 [2023-11-06 22:02:04,984 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-06 22:02:04,985 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 22:02:05,004 INFO L351 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 [2023-11-06 22:02:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:05,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:05,418 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_307 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_307))) (or (< 0 (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) 2147483649)) (forall ((~B~0.offset Int) (~B~0.base Int)) (not (= (select (select .cse0 ~B~0.base) ~B~0.offset) 0)))))) (forall ((v_ArrVal_307 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_307))) (let ((.cse1 (select (select .cse2 ~B~0.base) ~B~0.offset))) (or (< .cse1 1) (< 4294967295 .cse1) (< 0 (+ (select (select .cse2 c_~A~0.base) c_~A~0.offset) 2147483649 .cse1))))))) is different from false [2023-11-06 22:02:07,953 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:02:07,954 INFO L351 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 186 treesize of output 127 [2023-11-06 22:02:08,044 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:02:08,045 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1185 treesize of output 1152 [2023-11-06 22:02:08,149 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:02:08,150 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 527 treesize of output 532 [2023-11-06 22:02:08,213 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:02:08,214 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 523 treesize of output 524 [2023-11-06 22:02:08,273 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:02:08,274 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 515 treesize of output 504 [2023-11-06 22:02:08,335 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:02:08,336 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 495 treesize of output 464 [2023-11-06 22:04:30,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-06 22:04:30,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091492673] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:04:30,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:04:30,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 16 [2023-11-06 22:04:30,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534105393] [2023-11-06 22:04:30,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:30,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:04:30,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:30,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:04:30,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=211, Unknown=2, NotChecked=30, Total=306 [2023-11-06 22:04:30,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 836 [2023-11-06 22:04:30,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 86 transitions, 479 flow. Second operand has 18 states, 18 states have (on average 302.1666666666667) internal successors, (5439), 18 states have internal predecessors, (5439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:30,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:30,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 836 [2023-11-06 22:04:30,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:32,753 INFO L124 PetriNetUnfolderBase]: 8557/11087 cut-off events. [2023-11-06 22:04:32,753 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2023-11-06 22:04:32,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22537 conditions, 11087 events. 8557/11087 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 53878 event pairs, 4496 based on Foata normal form. 0/4807 useless extension candidates. Maximal degree in co-relation 22436. Up to 10853 conditions per place. [2023-11-06 22:04:32,892 INFO L140 encePairwiseOnDemand]: 827/836 looper letters, 52 selfloop transitions, 25 changer transitions 0/81 dead transitions. [2023-11-06 22:04:32,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 81 transitions, 582 flow [2023-11-06 22:04:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:04:32,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:04:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2159 transitions. [2023-11-06 22:04:32,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3689336978810663 [2023-11-06 22:04:32,899 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2159 transitions. [2023-11-06 22:04:32,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2159 transitions. [2023-11-06 22:04:32,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:32,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2159 transitions. [2023-11-06 22:04:32,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 308.42857142857144) internal successors, (2159), 7 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:32,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:32,921 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:32,921 INFO L175 Difference]: Start difference. First operand has 76 places, 86 transitions, 479 flow. Second operand 7 states and 2159 transitions. [2023-11-06 22:04:32,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 81 transitions, 582 flow [2023-11-06 22:04:32,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 81 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:04:32,926 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 470 flow [2023-11-06 22:04:32,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=470, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2023-11-06 22:04:32,927 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2023-11-06 22:04:32,927 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 470 flow [2023-11-06 22:04:32,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 302.1666666666667) internal successors, (5439), 18 states have internal predecessors, (5439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:32,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:32,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:32,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-06 22:04:33,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:04:33,135 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:04:33,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:33,136 INFO L85 PathProgramCache]: Analyzing trace with hash -793336959, now seen corresponding path program 1 times [2023-11-06 22:04:33,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:33,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250842202] [2023-11-06 22:04:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:33,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:04:33,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:33,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250842202] [2023-11-06 22:04:33,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250842202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:33,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200294767] [2023-11-06 22:04:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:33,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:33,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:33,452 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:33,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:04:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:33,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:04:33,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:33,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-06 22:04:33,644 INFO L351 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 [2023-11-06 22:04:33,671 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:04:33,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-11-06 22:04:33,697 INFO L351 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 [2023-11-06 22:04:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:04:33,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:33,793 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:04:33,793 INFO L351 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 [2023-11-06 22:04:33,804 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:04:33,804 INFO L351 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 [2023-11-06 22:04:33,810 INFO L351 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 11 treesize of output 9 [2023-11-06 22:04:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:04:33,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200294767] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:04:33,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:04:33,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 22:04:33,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726018894] [2023-11-06 22:04:33,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:33,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:04:33,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:33,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:04:33,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=95, Unknown=3, NotChecked=0, Total=132 [2023-11-06 22:04:34,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 836 [2023-11-06 22:04:34,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 470 flow. Second operand has 12 states, 12 states have (on average 302.25) internal successors, (3627), 12 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:34,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:34,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 836 [2023-11-06 22:04:34,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:35,404 INFO L124 PetriNetUnfolderBase]: 8554/11082 cut-off events. [2023-11-06 22:04:35,404 INFO L125 PetriNetUnfolderBase]: For 404/404 co-relation queries the response was YES. [2023-11-06 22:04:35,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22521 conditions, 11082 events. 8554/11082 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 53888 event pairs, 4496 based on Foata normal form. 0/4807 useless extension candidates. Maximal degree in co-relation 22428. Up to 10853 conditions per place. [2023-11-06 22:04:35,456 INFO L140 encePairwiseOnDemand]: 828/836 looper letters, 52 selfloop transitions, 20 changer transitions 0/76 dead transitions. [2023-11-06 22:04:35,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 553 flow [2023-11-06 22:04:35,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:04:35,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:04:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1857 transitions. [2023-11-06 22:04:35,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37021531100478466 [2023-11-06 22:04:35,466 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1857 transitions. [2023-11-06 22:04:35,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1857 transitions. [2023-11-06 22:04:35,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:35,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1857 transitions. [2023-11-06 22:04:35,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 309.5) internal successors, (1857), 6 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:35,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 836.0) internal successors, (5852), 7 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:35,482 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 836.0) internal successors, (5852), 7 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:35,482 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 470 flow. Second operand 6 states and 1857 transitions. [2023-11-06 22:04:35,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 553 flow [2023-11-06 22:04:35,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 513 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:04:35,487 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 409 flow [2023-11-06 22:04:35,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=409, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2023-11-06 22:04:35,488 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 6 predicate places. [2023-11-06 22:04:35,488 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 409 flow [2023-11-06 22:04:35,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 302.25) internal successors, (3627), 12 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:35,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:35,489 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-11-06 22:04:35,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:35,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:35,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:04:35,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:35,696 INFO L85 PathProgramCache]: Analyzing trace with hash -888525685, now seen corresponding path program 1 times [2023-11-06 22:04:35,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:35,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551738080] [2023-11-06 22:04:35,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:35,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:04:35,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:35,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551738080] [2023-11-06 22:04:35,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551738080] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:35,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222404588] [2023-11-06 22:04:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:35,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:35,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:35,839 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:35,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:04:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:36,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:04:36,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:04:36,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:04:36,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222404588] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:04:36,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:04:36,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 18 [2023-11-06 22:04:36,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377494555] [2023-11-06 22:04:36,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:36,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:04:36,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:36,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:04:36,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:04:36,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 836 [2023-11-06 22:04:36,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 409 flow. Second operand has 19 states, 19 states have (on average 339.2105263157895) internal successors, (6445), 19 states have internal predecessors, (6445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:36,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:36,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 836 [2023-11-06 22:04:36,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:39,161 INFO L124 PetriNetUnfolderBase]: 13030/16860 cut-off events. [2023-11-06 22:04:39,161 INFO L125 PetriNetUnfolderBase]: For 690/690 co-relation queries the response was YES. [2023-11-06 22:04:39,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34370 conditions, 16860 events. 13030/16860 cut-off events. For 690/690 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 84002 event pairs, 6848 based on Foata normal form. 2/7461 useless extension candidates. Maximal degree in co-relation 22428. Up to 10852 conditions per place. [2023-11-06 22:04:39,242 INFO L140 encePairwiseOnDemand]: 827/836 looper letters, 84 selfloop transitions, 34 changer transitions 0/122 dead transitions. [2023-11-06 22:04:39,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 122 transitions, 808 flow [2023-11-06 22:04:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:04:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:04:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4170 transitions. [2023-11-06 22:04:39,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41566985645933013 [2023-11-06 22:04:39,261 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4170 transitions. [2023-11-06 22:04:39,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4170 transitions. [2023-11-06 22:04:39,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:39,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4170 transitions. [2023-11-06 22:04:39,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 347.5) internal successors, (4170), 12 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:39,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 836.0) internal successors, (10868), 13 states have internal predecessors, (10868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:39,289 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 836.0) internal successors, (10868), 13 states have internal predecessors, (10868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:39,289 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 409 flow. Second operand 12 states and 4170 transitions. [2023-11-06 22:04:39,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 122 transitions, 808 flow [2023-11-06 22:04:39,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 122 transitions, 756 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:04:39,295 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 504 flow [2023-11-06 22:04:39,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=504, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2023-11-06 22:04:39,296 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 12 predicate places. [2023-11-06 22:04:39,297 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 504 flow [2023-11-06 22:04:39,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 339.2105263157895) internal successors, (6445), 19 states have internal predecessors, (6445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:39,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:39,298 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1] [2023-11-06 22:04:39,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:39,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:04:39,504 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:04:39,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:39,504 INFO L85 PathProgramCache]: Analyzing trace with hash -422379028, now seen corresponding path program 2 times [2023-11-06 22:04:39,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:39,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182583680] [2023-11-06 22:04:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:39,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:39,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:39,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182583680] [2023-11-06 22:04:39,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182583680] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:39,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662210237] [2023-11-06 22:04:39,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:04:39,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:39,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:39,735 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:39,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:04:39,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:04:39,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:04:39,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:04:39,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:04:39,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:04:39,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662210237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:39,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:04:39,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 11 [2023-11-06 22:04:39,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449594341] [2023-11-06 22:04:39,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:39,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:39,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:39,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:39,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:04:40,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 836 [2023-11-06 22:04:40,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 504 flow. Second operand has 4 states, 4 states have (on average 354.25) internal successors, (1417), 4 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:40,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:40,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 836 [2023-11-06 22:04:40,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:41,569 INFO L124 PetriNetUnfolderBase]: 12033/15604 cut-off events. [2023-11-06 22:04:41,570 INFO L125 PetriNetUnfolderBase]: For 664/664 co-relation queries the response was YES. [2023-11-06 22:04:41,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31322 conditions, 15604 events. 12033/15604 cut-off events. For 664/664 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 78080 event pairs, 6327 based on Foata normal form. 522/6988 useless extension candidates. Maximal degree in co-relation 20935. Up to 15286 conditions per place. [2023-11-06 22:04:41,650 INFO L140 encePairwiseOnDemand]: 831/836 looper letters, 69 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2023-11-06 22:04:41,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 81 transitions, 630 flow [2023-11-06 22:04:41,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:04:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:04:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1459 transitions. [2023-11-06 22:04:41,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363038277511962 [2023-11-06 22:04:41,656 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1459 transitions. [2023-11-06 22:04:41,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1459 transitions. [2023-11-06 22:04:41,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:41,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1459 transitions. [2023-11-06 22:04:41,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 364.75) internal successors, (1459), 4 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:41,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:41,664 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:41,665 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 504 flow. Second operand 4 states and 1459 transitions. [2023-11-06 22:04:41,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 81 transitions, 630 flow [2023-11-06 22:04:41,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 81 transitions, 514 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-11-06 22:04:41,669 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 376 flow [2023-11-06 22:04:41,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2023-11-06 22:04:41,669 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2023-11-06 22:04:41,670 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 376 flow [2023-11-06 22:04:41,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 354.25) internal successors, (1417), 4 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:41,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:41,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:41,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:41,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:41,876 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:04:41,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:41,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1677469901, now seen corresponding path program 1 times [2023-11-06 22:04:41,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:41,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152267610] [2023-11-06 22:04:41,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:41,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:42,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:42,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152267610] [2023-11-06 22:04:42,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152267610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:42,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355631323] [2023-11-06 22:04:42,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:42,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:42,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:42,039 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:42,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:04:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:42,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:04:42,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:42,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:42,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:42,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355631323] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:04:42,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:04:42,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-06 22:04:42,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039639367] [2023-11-06 22:04:42,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:42,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:04:42,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:42,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:04:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:04:42,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 836 [2023-11-06 22:04:42,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 376 flow. Second operand has 12 states, 12 states have (on average 334.8333333333333) internal successors, (4018), 12 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:42,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:42,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 836 [2023-11-06 22:04:42,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:44,019 INFO L124 PetriNetUnfolderBase]: 7554/10333 cut-off events. [2023-11-06 22:04:44,019 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-11-06 22:04:44,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20819 conditions, 10333 events. 7554/10333 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 52319 event pairs, 4524 based on Foata normal form. 0/5367 useless extension candidates. Maximal degree in co-relation 8723. Up to 8583 conditions per place. [2023-11-06 22:04:44,065 INFO L140 encePairwiseOnDemand]: 821/836 looper letters, 101 selfloop transitions, 29 changer transitions 0/133 dead transitions. [2023-11-06 22:04:44,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 133 transitions, 748 flow [2023-11-06 22:04:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:04:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:04:44,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2780 transitions. [2023-11-06 22:04:44,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41566985645933013 [2023-11-06 22:04:44,073 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2780 transitions. [2023-11-06 22:04:44,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2780 transitions. [2023-11-06 22:04:44,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:44,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2780 transitions. [2023-11-06 22:04:44,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 347.5) internal successors, (2780), 8 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:44,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 836.0) internal successors, (7524), 9 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:44,090 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 836.0) internal successors, (7524), 9 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:44,090 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 376 flow. Second operand 8 states and 2780 transitions. [2023-11-06 22:04:44,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 133 transitions, 748 flow [2023-11-06 22:04:44,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 133 transitions, 739 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:04:44,095 INFO L231 Difference]: Finished difference. Result has 76 places, 83 transitions, 452 flow [2023-11-06 22:04:44,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=452, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2023-11-06 22:04:44,096 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 7 predicate places. [2023-11-06 22:04:44,096 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 452 flow [2023-11-06 22:04:44,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 334.8333333333333) internal successors, (4018), 12 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:44,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:44,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:44,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:44,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:44,304 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:04:44,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash -812428974, now seen corresponding path program 1 times [2023-11-06 22:04:44,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:44,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468023529] [2023-11-06 22:04:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:44,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:44,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:44,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468023529] [2023-11-06 22:04:44,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468023529] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:44,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927052315] [2023-11-06 22:04:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:44,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:44,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:44,467 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:44,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:04:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:44,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:04:44,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:44,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:44,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927052315] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:04:44,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:04:44,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 22:04:44,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965023738] [2023-11-06 22:04:44,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:44,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:04:44,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:44,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:04:44,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:04:45,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 836 [2023-11-06 22:04:45,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 452 flow. Second operand has 12 states, 12 states have (on average 334.8333333333333) internal successors, (4018), 12 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:45,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:45,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 836 [2023-11-06 22:04:45,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:46,421 INFO L124 PetriNetUnfolderBase]: 7739/10262 cut-off events. [2023-11-06 22:04:46,422 INFO L125 PetriNetUnfolderBase]: For 745/794 co-relation queries the response was YES. [2023-11-06 22:04:46,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24375 conditions, 10262 events. 7739/10262 cut-off events. For 745/794 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 53739 event pairs, 4289 based on Foata normal form. 49/4704 useless extension candidates. Maximal degree in co-relation 11691. Up to 9683 conditions per place. [2023-11-06 22:04:46,473 INFO L140 encePairwiseOnDemand]: 825/836 looper letters, 85 selfloop transitions, 29 changer transitions 0/118 dead transitions. [2023-11-06 22:04:46,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 118 transitions, 762 flow [2023-11-06 22:04:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:04:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:04:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2760 transitions. [2023-11-06 22:04:46,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126794258373206 [2023-11-06 22:04:46,479 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2760 transitions. [2023-11-06 22:04:46,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2760 transitions. [2023-11-06 22:04:46,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:46,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2760 transitions. [2023-11-06 22:04:46,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:46,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 836.0) internal successors, (7524), 9 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:46,491 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 836.0) internal successors, (7524), 9 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:46,491 INFO L175 Difference]: Start difference. First operand has 76 places, 83 transitions, 452 flow. Second operand 8 states and 2760 transitions. [2023-11-06 22:04:46,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 118 transitions, 762 flow [2023-11-06 22:04:46,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 711 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:04:46,500 INFO L231 Difference]: Finished difference. Result has 80 places, 85 transitions, 478 flow [2023-11-06 22:04:46,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=478, PETRI_PLACES=80, PETRI_TRANSITIONS=85} [2023-11-06 22:04:46,500 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 11 predicate places. [2023-11-06 22:04:46,501 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 85 transitions, 478 flow [2023-11-06 22:04:46,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 334.8333333333333) internal successors, (4018), 12 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:46,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:46,502 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:46,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-06 22:04:46,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:46,711 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:04:46,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:46,711 INFO L85 PathProgramCache]: Analyzing trace with hash -430556458, now seen corresponding path program 1 times [2023-11-06 22:04:46,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:46,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945890883] [2023-11-06 22:04:46,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:46,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:47,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945890883] [2023-11-06 22:04:47,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945890883] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789948066] [2023-11-06 22:04:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:47,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:47,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:47,643 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:47,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84818192-28ab-4e41-93a7-1afd7607b9ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:04:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:47,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-06 22:04:47,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:47,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,876 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:04:47,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,891 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:04:47,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:04:47,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,913 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:04:47,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,929 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:04:47,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:04:47,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,965 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:04:47,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:47,982 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:04:48,070 INFO L351 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 [2023-11-06 22:04:48,138 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:04:48,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:04:48,204 INFO L351 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 [2023-11-06 22:04:48,225 INFO L351 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 [2023-11-06 22:04:48,293 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:04:48,293 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-11-06 22:04:48,339 INFO L351 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 [2023-11-06 22:04:48,363 INFO L351 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 [2023-11-06 22:04:48,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:48,408 INFO L351 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 [2023-11-06 22:04:48,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:48,457 INFO L351 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 [2023-11-06 22:04:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:48,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:48,713 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_600 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_600))) (or (< 0 (+ 2147483649 (select (select .cse0 c_~A~0.base) .cse1))) (forall ((~B~0.offset Int) (~B~0.base Int)) (not (= (select (select .cse0 ~B~0.base) (+ ~B~0.offset 4)) 0)))))) (forall ((v_ArrVal_600 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_600))) (let ((.cse3 (select (select .cse2 ~B~0.base) (+ ~B~0.offset 4)))) (or (< 0 (+ 2147483649 (select (select .cse2 c_~A~0.base) .cse1) .cse3)) (< .cse3 1) (< 4294967295 .cse3))))))) is different from false [2023-11-06 22:04:48,954 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_600 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int) (v_ArrVal_599 (Array Int Int)) (v_ArrVal_598 (Array Int Int))) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_598) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_599) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_600))) (let ((.cse0 (select (select .cse1 ~B~0.base) (+ ~B~0.offset 4)))) (or (< .cse0 1) (< 0 (+ 2147483649 .cse0 (select (select .cse1 c_~A~0.base) .cse2))) (< 4294967295 .cse0))))) (forall ((v_ArrVal_600 (Array Int Int)) (v_ArrVal_599 (Array Int Int)) (v_ArrVal_598 (Array Int Int))) (let ((.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_598) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_599) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_600))) (or (< 0 (+ 2147483649 (select (select .cse3 c_~A~0.base) .cse2))) (forall ((~B~0.offset Int) (~B~0.base Int)) (not (= (select (select .cse3 ~B~0.base) (+ ~B~0.offset 4)) 0)))))))) is different from false [2023-11-06 22:04:49,584 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:04:49,584 INFO L351 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 234 treesize of output 175 [2023-11-06 22:04:49,693 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:04:49,695 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27725 treesize of output 26964 [2023-11-06 22:04:50,453 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:04:50,454 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7115 treesize of output 7092 [2023-11-06 22:04:50,654 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:04:50,655 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7083 treesize of output 7084