./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:31:57,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:31:57,449 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:31:57,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:31:57,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:31:57,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:31:57,504 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:31:57,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:31:57,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:31:57,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:31:57,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:31:57,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:31:57,513 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:31:57,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:31:57,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:31:57,516 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:31:57,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:31:57,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:31:57,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:31:57,518 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:31:57,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:31:57,519 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:31:57,519 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:31:57,520 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:31:57,520 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:31:57,521 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:31:57,521 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:31:57,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:31:57,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:31:57,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:31:57,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:31:57,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:31:57,525 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:31:57,525 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:31:57,526 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:31:57,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:31:57,526 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:31:57,526 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:31:57,527 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:31:57,527 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:31:57,527 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:31:57,527 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_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2023-11-12 02:31:57,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:31:57,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:31:57,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:31:57,906 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:31:57,906 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:31:57,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-11-12 02:32:00,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:32:01,309 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:32:01,310 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-11-12 02:32:01,327 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/data/f097f4f46/b61eb0da178f4dc9b4d07500bc0104a1/FLAG0cc766d07 [2023-11-12 02:32:01,343 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/data/f097f4f46/b61eb0da178f4dc9b4d07500bc0104a1 [2023-11-12 02:32:01,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:32:01,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:32:01,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:32:01,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:32:01,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:32:01,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:32:01" (1/1) ... [2023-11-12 02:32:01,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c7d9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:01, skipping insertion in model container [2023-11-12 02:32:01,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:32:01" (1/1) ... [2023-11-12 02:32:01,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:32:01,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:32:01,902 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:32:01,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:32:02,000 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:32:02,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02 WrapperNode [2023-11-12 02:32:02,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:32:02,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:32:02,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:32:02,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:32:02,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02" (1/1) ... [2023-11-12 02:32:02,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02" (1/1) ... [2023-11-12 02:32:02,066 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2023-11-12 02:32:02,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:32:02,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:32:02,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:32:02,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:32:02,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02" (1/1) ... [2023-11-12 02:32:02,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02" (1/1) ... [2023-11-12 02:32:02,082 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02" (1/1) ... [2023-11-12 02:32:02,082 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02" (1/1) ... [2023-11-12 02:32:02,092 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02" (1/1) ... [2023-11-12 02:32:02,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02" (1/1) ... [2023-11-12 02:32:02,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02" (1/1) ... [2023-11-12 02:32:02,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02" (1/1) ... [2023-11-12 02:32:02,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:32:02,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:32:02,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:32:02,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:32:02,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02" (1/1) ... [2023-11-12 02:32:02,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:32:02,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:02,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:32:02,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:32:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:32:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:32:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:32:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:32:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:32:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:32:02,193 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:32:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:32:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:32:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:32:02,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:32:02,196 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:32:02,348 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:32:02,350 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:32:02,712 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:32:02,730 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:32:02,730 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-12 02:32:02,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:32:02 BoogieIcfgContainer [2023-11-12 02:32:02,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:32:02,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:32:02,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:32:02,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:32:02,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:32:01" (1/3) ... [2023-11-12 02:32:02,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70204953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:32:02, skipping insertion in model container [2023-11-12 02:32:02,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:02" (2/3) ... [2023-11-12 02:32:02,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70204953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:32:02, skipping insertion in model container [2023-11-12 02:32:02,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:32:02" (3/3) ... [2023-11-12 02:32:02,748 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2023-11-12 02:32:02,759 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:32:02,768 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:32:02,768 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 02:32:02,768 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:32:02,842 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:32:02,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 142 transitions, 291 flow [2023-11-12 02:32:02,977 INFO L124 PetriNetUnfolderBase]: 19/186 cut-off events. [2023-11-12 02:32:02,978 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:32:02,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 186 events. 19/186 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 496 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 94. Up to 4 conditions per place. [2023-11-12 02:32:02,988 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 142 transitions, 291 flow [2023-11-12 02:32:02,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 139 transitions, 285 flow [2023-11-12 02:32:03,003 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:32:03,014 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 139 transitions, 285 flow [2023-11-12 02:32:03,034 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 139 transitions, 285 flow [2023-11-12 02:32:03,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 139 transitions, 285 flow [2023-11-12 02:32:03,108 INFO L124 PetriNetUnfolderBase]: 18/183 cut-off events. [2023-11-12 02:32:03,108 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:32:03,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 183 events. 18/183 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 502 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 94. Up to 4 conditions per place. [2023-11-12 02:32:03,123 INFO L119 LiptonReduction]: Number of co-enabled transitions 4428 [2023-11-12 02:32:07,351 INFO L134 LiptonReduction]: Checked pairs total: 7401 [2023-11-12 02:32:07,352 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-11-12 02:32:07,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:32:07,376 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17489d28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:32:07,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 02:32:07,381 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:32:07,381 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2023-11-12 02:32:07,382 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:32:07,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:07,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:32:07,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:32:07,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash 16616496, now seen corresponding path program 1 times [2023-11-12 02:32:07,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:07,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623242145] [2023-11-12 02:32:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:07,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:07,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:07,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623242145] [2023-11-12 02:32:07,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623242145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:07,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:07,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:32:07,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754302241] [2023-11-12 02:32:07,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:07,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:07,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:07,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:07,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:07,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-11-12 02:32:07,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 41 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:07,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:07,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-11-12 02:32:07,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:08,016 INFO L124 PetriNetUnfolderBase]: 98/254 cut-off events. [2023-11-12 02:32:08,016 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:32:08,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 254 events. 98/254 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1160 event pairs, 0 based on Foata normal form. 8/214 useless extension candidates. Maximal degree in co-relation 450. Up to 207 conditions per place. [2023-11-12 02:32:08,026 INFO L140 encePairwiseOnDemand]: 256/271 looper letters, 39 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-12 02:32:08,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 177 flow [2023-11-12 02:32:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:32:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-11-12 02:32:08,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202952029520295 [2023-11-12 02:32:08,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-11-12 02:32:08,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-11-12 02:32:08,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:08,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-11-12 02:32:08,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:08,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:08,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:08,078 INFO L175 Difference]: Start difference. First operand has 35 places, 41 transitions, 89 flow. Second operand 3 states and 423 transitions. [2023-11-12 02:32:08,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 177 flow [2023-11-12 02:32:08,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 177 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:32:08,089 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 73 flow [2023-11-12 02:32:08,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-11-12 02:32:08,097 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-11-12 02:32:08,098 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 73 flow [2023-11-12 02:32:08,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:08,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:08,099 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 02:32:08,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:32:08,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:32:08,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:08,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1211399469, now seen corresponding path program 1 times [2023-11-12 02:32:08,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:08,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998288328] [2023-11-12 02:32:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:08,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:32:08,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:32:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:32:08,238 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:32:08,239 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:32:08,240 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-12 02:32:08,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-12 02:32:08,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-12 02:32:08,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-12 02:32:08,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-12 02:32:08,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-12 02:32:08,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-12 02:32:08,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-12 02:32:08,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-12 02:32:08,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-12 02:32:08,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-12 02:32:08,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-12 02:32:08,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-12 02:32:08,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:32:08,250 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 02:32:08,254 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:32:08,255 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:32:08,308 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:32:08,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 185 transitions, 386 flow [2023-11-12 02:32:08,380 INFO L124 PetriNetUnfolderBase]: 34/311 cut-off events. [2023-11-12 02:32:08,380 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:32:08,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 311 events. 34/311 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1028 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 188. Up to 8 conditions per place. [2023-11-12 02:32:08,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 185 transitions, 386 flow [2023-11-12 02:32:08,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 185 transitions, 386 flow [2023-11-12 02:32:08,390 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:32:08,390 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 185 transitions, 386 flow [2023-11-12 02:32:08,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 185 transitions, 386 flow [2023-11-12 02:32:08,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 185 transitions, 386 flow [2023-11-12 02:32:08,440 INFO L124 PetriNetUnfolderBase]: 34/311 cut-off events. [2023-11-12 02:32:08,440 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:32:08,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 311 events. 34/311 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1028 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 188. Up to 8 conditions per place. [2023-11-12 02:32:08,458 INFO L119 LiptonReduction]: Number of co-enabled transitions 13776 [2023-11-12 02:32:13,166 INFO L134 LiptonReduction]: Checked pairs total: 26730 [2023-11-12 02:32:13,166 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-11-12 02:32:13,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:32:13,174 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17489d28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:32:13,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-12 02:32:13,179 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:32:13,181 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-11-12 02:32:13,181 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:32:13,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:13,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:32:13,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:32:13,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:13,188 INFO L85 PathProgramCache]: Analyzing trace with hash 887724560, now seen corresponding path program 1 times [2023-11-12 02:32:13,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:13,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279080376] [2023-11-12 02:32:13,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:13,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:13,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:13,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279080376] [2023-11-12 02:32:13,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279080376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:13,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:13,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:32:13,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002260394] [2023-11-12 02:32:13,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:13,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:13,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:13,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:13,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:13,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 348 [2023-11-12 02:32:13,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 67 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:13,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:13,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 348 [2023-11-12 02:32:13,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:14,310 INFO L124 PetriNetUnfolderBase]: 4435/7387 cut-off events. [2023-11-12 02:32:14,311 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-12 02:32:14,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14526 conditions, 7387 events. 4435/7387 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 48731 event pairs, 2080 based on Foata normal form. 710/5778 useless extension candidates. Maximal degree in co-relation 1677. Up to 7046 conditions per place. [2023-11-12 02:32:14,373 INFO L140 encePairwiseOnDemand]: 328/348 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-12 02:32:14,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 270 flow [2023-11-12 02:32:14,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:32:14,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2023-11-12 02:32:14,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2023-11-12 02:32:14,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2023-11-12 02:32:14,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2023-11-12 02:32:14,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:14,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2023-11-12 02:32:14,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:14,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:14,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:14,387 INFO L175 Difference]: Start difference. First operand has 55 places, 67 transitions, 150 flow. Second operand 3 states and 552 transitions. [2023-11-12 02:32:14,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 270 flow [2023-11-12 02:32:14,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:32:14,393 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 136 flow [2023-11-12 02:32:14,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-12 02:32:14,395 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-11-12 02:32:14,397 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 136 flow [2023-11-12 02:32:14,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:14,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:14,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:14,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:32:14,399 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:32:14,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:14,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1587237349, now seen corresponding path program 1 times [2023-11-12 02:32:14,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:14,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300556756] [2023-11-12 02:32:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:14,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:14,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:14,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300556756] [2023-11-12 02:32:14,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300556756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:14,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:14,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:14,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183090952] [2023-11-12 02:32:14,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:14,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:32:14,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:14,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:32:14,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:32:14,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 348 [2023-11-12 02:32:14,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:14,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:14,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 348 [2023-11-12 02:32:14,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:16,467 INFO L124 PetriNetUnfolderBase]: 6536/10939 cut-off events. [2023-11-12 02:32:16,468 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2023-11-12 02:32:16,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22459 conditions, 10939 events. 6536/10939 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 77652 event pairs, 1484 based on Foata normal form. 0/7920 useless extension candidates. Maximal degree in co-relation 22371. Up to 6110 conditions per place. [2023-11-12 02:32:16,566 INFO L140 encePairwiseOnDemand]: 337/348 looper letters, 134 selfloop transitions, 18 changer transitions 0/159 dead transitions. [2023-11-12 02:32:16,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 159 transitions, 693 flow [2023-11-12 02:32:16,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:32:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:32:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1053 transitions. [2023-11-12 02:32:16,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043103448275862 [2023-11-12 02:32:16,573 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1053 transitions. [2023-11-12 02:32:16,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1053 transitions. [2023-11-12 02:32:16,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:16,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1053 transitions. [2023-11-12 02:32:16,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.5) internal successors, (1053), 6 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:16,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:16,587 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:16,587 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 136 flow. Second operand 6 states and 1053 transitions. [2023-11-12 02:32:16,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 159 transitions, 693 flow [2023-11-12 02:32:16,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 159 transitions, 689 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:32:16,599 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 266 flow [2023-11-12 02:32:16,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2023-11-12 02:32:16,602 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2023-11-12 02:32:16,603 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 266 flow [2023-11-12 02:32:16,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:16,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:16,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:32:16,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:32:16,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:32:16,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash 398237167, now seen corresponding path program 1 times [2023-11-12 02:32:16,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:16,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500107897] [2023-11-12 02:32:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:16,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:16,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:16,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500107897] [2023-11-12 02:32:16,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500107897] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:32:16,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202012729] [2023-11-12 02:32:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:16,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:16,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:16,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:16,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:32:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:16,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:32:16,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:16,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:16,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202012729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:16,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:32:16,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-12 02:32:16,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114883813] [2023-11-12 02:32:16,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:16,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:32:16,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:32:16,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:32:16,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 348 [2023-11-12 02:32:16,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:16,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:16,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 348 [2023-11-12 02:32:16,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:18,379 INFO L124 PetriNetUnfolderBase]: 6136/10231 cut-off events. [2023-11-12 02:32:18,379 INFO L125 PetriNetUnfolderBase]: For 4301/4301 co-relation queries the response was YES. [2023-11-12 02:32:18,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25260 conditions, 10231 events. 6136/10231 cut-off events. For 4301/4301 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 72517 event pairs, 1509 based on Foata normal form. 0/8213 useless extension candidates. Maximal degree in co-relation 20462. Up to 7568 conditions per place. [2023-11-12 02:32:18,456 INFO L140 encePairwiseOnDemand]: 344/348 looper letters, 102 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2023-11-12 02:32:18,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 112 transitions, 608 flow [2023-11-12 02:32:18,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:32:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:32:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 708 transitions. [2023-11-12 02:32:18,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2023-11-12 02:32:18,461 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 708 transitions. [2023-11-12 02:32:18,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 708 transitions. [2023-11-12 02:32:18,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:18,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 708 transitions. [2023-11-12 02:32:18,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:18,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 348.0) internal successors, (1740), 5 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:18,469 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 348.0) internal successors, (1740), 5 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:18,470 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 266 flow. Second operand 4 states and 708 transitions. [2023-11-12 02:32:18,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 112 transitions, 608 flow [2023-11-12 02:32:18,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 112 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:32:18,486 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 268 flow [2023-11-12 02:32:18,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-11-12 02:32:18,489 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2023-11-12 02:32:18,489 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 268 flow [2023-11-12 02:32:18,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:18,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:18,490 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:32:18,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:18,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:18,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:32:18,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:18,697 INFO L85 PathProgramCache]: Analyzing trace with hash 398237166, now seen corresponding path program 1 times [2023-11-12 02:32:18,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:18,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049497294] [2023-11-12 02:32:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:18,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:32:18,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:18,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049497294] [2023-11-12 02:32:18,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049497294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:18,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:18,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:32:18,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043866467] [2023-11-12 02:32:18,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:18,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:18,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:18,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:18,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:18,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 348 [2023-11-12 02:32:18,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:18,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:18,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 348 [2023-11-12 02:32:18,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:20,215 INFO L124 PetriNetUnfolderBase]: 5736/9542 cut-off events. [2023-11-12 02:32:20,216 INFO L125 PetriNetUnfolderBase]: For 3881/3881 co-relation queries the response was YES. [2023-11-12 02:32:20,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23821 conditions, 9542 events. 5736/9542 cut-off events. For 3881/3881 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 66382 event pairs, 1417 based on Foata normal form. 0/7845 useless extension candidates. Maximal degree in co-relation 19148. Up to 8205 conditions per place. [2023-11-12 02:32:20,281 INFO L140 encePairwiseOnDemand]: 344/348 looper letters, 88 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2023-11-12 02:32:20,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 100 transitions, 554 flow [2023-11-12 02:32:20,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:32:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-11-12 02:32:20,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134099616858238 [2023-11-12 02:32:20,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-11-12 02:32:20,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-11-12 02:32:20,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:20,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-11-12 02:32:20,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:20,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:20,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:20,291 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 268 flow. Second operand 3 states and 536 transitions. [2023-11-12 02:32:20,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 100 transitions, 554 flow [2023-11-12 02:32:20,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 100 transitions, 550 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:32:20,310 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 281 flow [2023-11-12 02:32:20,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=281, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-11-12 02:32:20,314 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2023-11-12 02:32:20,315 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 281 flow [2023-11-12 02:32:20,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:20,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:20,316 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:20,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:32:20,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:32:20,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:20,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2099317725, now seen corresponding path program 1 times [2023-11-12 02:32:20,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:20,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394444327] [2023-11-12 02:32:20,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:20,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:20,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394444327] [2023-11-12 02:32:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394444327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:32:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303813568] [2023-11-12 02:32:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:20,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:20,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:20,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:20,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:32:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:20,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 02:32:20,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:20,723 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-12 02:32:20,725 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 [2023-11-12 02:32:20,775 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 [2023-11-12 02:32:20,883 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 [2023-11-12 02:32:20,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:20,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:32:21,009 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_62 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_62) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483650))) is different from false [2023-11-12 02:32:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-12 02:32:21,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303813568] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:32:21,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:32:21,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-12 02:32:21,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649454349] [2023-11-12 02:32:21,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:32:21,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:32:21,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:21,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:32:21,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=65, Unknown=2, NotChecked=16, Total=110 [2023-11-12 02:32:21,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 348 [2023-11-12 02:32:21,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 281 flow. Second operand has 11 states, 11 states have (on average 132.1818181818182) internal successors, (1454), 11 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:21,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:21,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 348 [2023-11-12 02:32:21,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:23,129 INFO L124 PetriNetUnfolderBase]: 6849/11839 cut-off events. [2023-11-12 02:32:23,130 INFO L125 PetriNetUnfolderBase]: For 7875/7875 co-relation queries the response was YES. [2023-11-12 02:32:23,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29563 conditions, 11839 events. 6849/11839 cut-off events. For 7875/7875 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 87053 event pairs, 1884 based on Foata normal form. 61/9943 useless extension candidates. Maximal degree in co-relation 25615. Up to 6874 conditions per place. [2023-11-12 02:32:23,210 INFO L140 encePairwiseOnDemand]: 336/348 looper letters, 114 selfloop transitions, 29 changer transitions 0/150 dead transitions. [2023-11-12 02:32:23,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 150 transitions, 867 flow [2023-11-12 02:32:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:32:23,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:32:23,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 903 transitions. [2023-11-12 02:32:23,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324712643678161 [2023-11-12 02:32:23,215 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 903 transitions. [2023-11-12 02:32:23,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 903 transitions. [2023-11-12 02:32:23,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:23,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 903 transitions. [2023-11-12 02:32:23,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:23,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:23,224 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:23,225 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 281 flow. Second operand 6 states and 903 transitions. [2023-11-12 02:32:23,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 150 transitions, 867 flow [2023-11-12 02:32:23,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 150 transitions, 853 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:32:23,256 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 498 flow [2023-11-12 02:32:23,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=498, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2023-11-12 02:32:23,258 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 22 predicate places. [2023-11-12 02:32:23,258 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 498 flow [2023-11-12 02:32:23,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 132.1818181818182) internal successors, (1454), 11 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:23,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:23,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:23,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 02:32:23,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8346013-4257-43e4-9c52-c485401e2bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:23,467 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:32:23,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash -429775002, now seen corresponding path program 1 times [2023-11-12 02:32:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:23,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262121660] [2023-11-12 02:32:23,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:23,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:23,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:23,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262121660] [2023-11-12 02:32:23,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262121660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:23,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:23,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:32:23,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569994237] [2023-11-12 02:32:23,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:23,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:23,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:23,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:23,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:23,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 348 [2023-11-12 02:32:23,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:23,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:23,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 348 [2023-11-12 02:32:23,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:25,835 INFO L124 PetriNetUnfolderBase]: 8505/14727 cut-off events. [2023-11-12 02:32:25,836 INFO L125 PetriNetUnfolderBase]: For 19333/19333 co-relation queries the response was YES. [2023-11-12 02:32:25,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40615 conditions, 14727 events. 8505/14727 cut-off events. For 19333/19333 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 111694 event pairs, 4433 based on Foata normal form. 231/12853 useless extension candidates. Maximal degree in co-relation 38228. Up to 8006 conditions per place. [2023-11-12 02:32:26,068 INFO L140 encePairwiseOnDemand]: 341/348 looper letters, 102 selfloop transitions, 19 changer transitions 0/128 dead transitions. [2023-11-12 02:32:26,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 128 transitions, 933 flow [2023-11-12 02:32:26,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:32:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2023-11-12 02:32:26,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2023-11-12 02:32:26,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2023-11-12 02:32:26,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2023-11-12 02:32:26,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:26,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2023-11-12 02:32:26,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:26,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:26,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:26,078 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 498 flow. Second operand 3 states and 546 transitions. [2023-11-12 02:32:26,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 128 transitions, 933 flow [2023-11-12 02:32:26,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 128 transitions, 933 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:32:26,115 INFO L231 Difference]: Finished difference. Result has 81 places, 94 transitions, 664 flow [2023-11-12 02:32:26,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=664, PETRI_PLACES=81, PETRI_TRANSITIONS=94} [2023-11-12 02:32:26,117 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2023-11-12 02:32:26,118 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 94 transitions, 664 flow [2023-11-12 02:32:26,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:26,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:26,118 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 02:32:26,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:32:26,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:32:26,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash 453902349, now seen corresponding path program 1 times [2023-11-12 02:32:26,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:26,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376684664] [2023-11-12 02:32:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:26,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:32:26,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:32:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:32:26,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:32:26,169 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:32:26,170 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-12 02:32:26,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-12 02:32:26,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-12 02:32:26,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-12 02:32:26,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-12 02:32:26,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-12 02:32:26,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-12 02:32:26,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-12 02:32:26,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-12 02:32:26,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-12 02:32:26,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-12 02:32:26,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-12 02:32:26,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-12 02:32:26,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-12 02:32:26,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-12 02:32:26,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-12 02:32:26,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-12 02:32:26,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:32:26,174 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:26,175 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:32:26,175 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 02:32:26,213 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:32:26,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 228 transitions, 483 flow [2023-11-12 02:32:26,308 INFO L124 PetriNetUnfolderBase]: 54/479 cut-off events. [2023-11-12 02:32:26,309 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-12 02:32:26,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 479 events. 54/479 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1779 event pairs, 1 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 319. Up to 16 conditions per place. [2023-11-12 02:32:26,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 228 transitions, 483 flow [2023-11-12 02:32:26,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 228 transitions, 483 flow [2023-11-12 02:32:26,318 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:32:26,318 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 228 transitions, 483 flow [2023-11-12 02:32:26,319 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 228 transitions, 483 flow [2023-11-12 02:32:26,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 228 transitions, 483 flow [2023-11-12 02:32:26,399 INFO L124 PetriNetUnfolderBase]: 54/479 cut-off events. [2023-11-12 02:32:26,399 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-12 02:32:26,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 479 events. 54/479 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1779 event pairs, 1 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 319. Up to 16 conditions per place. [2023-11-12 02:32:26,431 INFO L119 LiptonReduction]: Number of co-enabled transitions 26076 [2023-11-12 02:32:31,575 INFO L134 LiptonReduction]: Checked pairs total: 62545 [2023-11-12 02:32:31,575 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-11-12 02:32:31,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:32:31,578 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17489d28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:32:31,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-12 02:32:31,581 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:32:31,581 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-11-12 02:32:31,582 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:32:31,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:31,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:32:31,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:32:31,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:31,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1336447291, now seen corresponding path program 1 times [2023-11-12 02:32:31,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:31,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80046590] [2023-11-12 02:32:31,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:31,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:31,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:31,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80046590] [2023-11-12 02:32:31,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80046590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:31,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:31,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:32:31,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121080677] [2023-11-12 02:32:31,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:31,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:31,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:31,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:31,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 426 [2023-11-12 02:32:31,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:31,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:31,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 426 [2023-11-12 02:32:31,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand