./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:08:19,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:08:19,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:08:20,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:08:20,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:08:20,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:08:20,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:08:20,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:08:20,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:08:20,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:08:20,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:08:20,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:08:20,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:08:20,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:08:20,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:08:20,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:08:20,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:08:20,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:08:20,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:08:20,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:08:20,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:08:20,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:08:20,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:08:20,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:08:20,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:08:20,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:08:20,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:08:20,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:08:20,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:08:20,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:08:20,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:08:20,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:08:20,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:08:20,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:08:20,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:08:20,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:08:20,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:08:20,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:08:20,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:08:20,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:08:20,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:08:20,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:08:20,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:08:20,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:08:20,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:08:20,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:08:20,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:08:20,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:08:20,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:08:20,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:08:20,110 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:08:20,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:08:20,110 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:08:20,110 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:08:20,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:08:20,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:08:20,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:08:20,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:08:20,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:08:20,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:08:20,112 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:08:20,112 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:08:20,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:08:20,113 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:08:20,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:08:20,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:08:20,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:08:20,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:08:20,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:08:20,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:08:20,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:08:20,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:08:20,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:08:20,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:08:20,115 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:08:20,116 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:08:20,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:08:20,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 [2022-11-21 16:08:20,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:08:20,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:08:20,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:08:20,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:08:20,409 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:08:20,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2022-11-21 16:08:23,507 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:08:23,756 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:08:23,757 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2022-11-21 16:08:23,774 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/data/bc8e8a4a2/0a49da65f10c4809a13f46c80e705f38/FLAG25c891f7e [2022-11-21 16:08:23,789 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/data/bc8e8a4a2/0a49da65f10c4809a13f46c80e705f38 [2022-11-21 16:08:23,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:08:23,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:08:23,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:08:23,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:08:23,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:08:23,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:08:23" (1/1) ... [2022-11-21 16:08:23,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6d4e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:23, skipping insertion in model container [2022-11-21 16:08:23,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:08:23" (1/1) ... [2022-11-21 16:08:23,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:08:23,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:08:24,013 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2022-11-21 16:08:24,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:08:24,032 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:08:24,056 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2022-11-21 16:08:24,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:08:24,075 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:08:24,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24 WrapperNode [2022-11-21 16:08:24,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:08:24,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:08:24,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:08:24,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:08:24,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24" (1/1) ... [2022-11-21 16:08:24,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24" (1/1) ... [2022-11-21 16:08:24,127 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 250 [2022-11-21 16:08:24,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:08:24,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:08:24,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:08:24,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:08:24,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24" (1/1) ... [2022-11-21 16:08:24,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24" (1/1) ... [2022-11-21 16:08:24,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24" (1/1) ... [2022-11-21 16:08:24,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24" (1/1) ... [2022-11-21 16:08:24,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24" (1/1) ... [2022-11-21 16:08:24,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24" (1/1) ... [2022-11-21 16:08:24,157 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24" (1/1) ... [2022-11-21 16:08:24,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24" (1/1) ... [2022-11-21 16:08:24,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:08:24,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:08:24,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:08:24,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:08:24,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24" (1/1) ... [2022-11-21 16:08:24,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:08:24,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:08:24,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:08:24,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:08:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:08:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:08:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:08:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:08:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:08:24,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:08:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:08:24,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:08:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:08:24,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:08:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:08:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:08:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:08:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:08:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:08:24,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:08:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:08:24,254 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:08:24,364 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:08:24,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:08:24,948 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:08:25,403 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:08:25,403 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 16:08:25,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:08:25 BoogieIcfgContainer [2022-11-21 16:08:25,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:08:25,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:08:25,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:08:25,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:08:25,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:08:23" (1/3) ... [2022-11-21 16:08:25,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cffe749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:08:25, skipping insertion in model container [2022-11-21 16:08:25,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:24" (2/3) ... [2022-11-21 16:08:25,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cffe749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:08:25, skipping insertion in model container [2022-11-21 16:08:25,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:08:25" (3/3) ... [2022-11-21 16:08:25,419 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2022-11-21 16:08:25,432 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:08:25,443 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:08:25,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-21 16:08:25,443 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:08:25,623 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:08:25,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 189 transitions, 402 flow [2022-11-21 16:08:25,797 INFO L130 PetriNetUnfolder]: 12/186 cut-off events. [2022-11-21 16:08:25,797 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 16:08:25,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 186 events. 12/186 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 248 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 138. Up to 2 conditions per place. [2022-11-21 16:08:25,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 189 transitions, 402 flow [2022-11-21 16:08:25,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 165 transitions, 345 flow [2022-11-21 16:08:25,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:08:25,841 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62e3266b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:08:25,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-21 16:08:25,865 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-21 16:08:25,865 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:08:25,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:25,866 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:25,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-21 16:08:25,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:25,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1126068733, now seen corresponding path program 1 times [2022-11-21 16:08:25,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:25,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636965323] [2022-11-21 16:08:25,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:25,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:26,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:26,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636965323] [2022-11-21 16:08:26,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636965323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:26,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:26,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:08:26,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466014156] [2022-11-21 16:08:26,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:26,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:08:26,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:08:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:08:26,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 189 [2022-11-21 16:08:26,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 165 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:26,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:26,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 189 [2022-11-21 16:08:26,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:28,413 INFO L130 PetriNetUnfolder]: 1911/4061 cut-off events. [2022-11-21 16:08:28,413 INFO L131 PetriNetUnfolder]: For 600/610 co-relation queries the response was YES. [2022-11-21 16:08:28,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6930 conditions, 4061 events. 1911/4061 cut-off events. For 600/610 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 29332 event pairs, 910 based on Foata normal form. 384/2093 useless extension candidates. Maximal degree in co-relation 3281. Up to 1265 conditions per place. [2022-11-21 16:08:28,469 INFO L137 encePairwiseOnDemand]: 170/189 looper letters, 56 selfloop transitions, 4 changer transitions 3/180 dead transitions. [2022-11-21 16:08:28,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 180 transitions, 510 flow [2022-11-21 16:08:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:08:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:08:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 791 transitions. [2022-11-21 16:08:28,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.837037037037037 [2022-11-21 16:08:28,498 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 791 transitions. [2022-11-21 16:08:28,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 791 transitions. [2022-11-21 16:08:28,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:28,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 791 transitions. [2022-11-21 16:08:28,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:28,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:28,527 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:28,529 INFO L175 Difference]: Start difference. First operand has 164 places, 165 transitions, 345 flow. Second operand 5 states and 791 transitions. [2022-11-21 16:08:28,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 180 transitions, 510 flow [2022-11-21 16:08:28,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 180 transitions, 492 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:08:28,547 INFO L231 Difference]: Finished difference. Result has 160 places, 152 transitions, 334 flow [2022-11-21 16:08:28,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=160, PETRI_TRANSITIONS=152} [2022-11-21 16:08:28,554 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, -4 predicate places. [2022-11-21 16:08:28,555 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 152 transitions, 334 flow [2022-11-21 16:08:28,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:28,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:28,556 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:28,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:08:28,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-21 16:08:28,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:28,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1889659338, now seen corresponding path program 1 times [2022-11-21 16:08:28,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:28,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279015175] [2022-11-21 16:08:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:28,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:28,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:28,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279015175] [2022-11-21 16:08:28,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279015175] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:08:28,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665670085] [2022-11-21 16:08:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:28,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:08:28,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:08:28,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:08:28,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:08:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:28,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:08:28,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:08:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:29,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:08:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:29,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665670085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:08:29,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:08:29,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:08:29,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838121276] [2022-11-21 16:08:29,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:08:29,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:08:29,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:29,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:08:29,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:08:29,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 189 [2022-11-21 16:08:29,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 152 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 143.66666666666666) internal successors, (1724), 12 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:29,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:29,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 189 [2022-11-21 16:08:29,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:33,077 INFO L130 PetriNetUnfolder]: 4776/10071 cut-off events. [2022-11-21 16:08:33,077 INFO L131 PetriNetUnfolder]: For 431/456 co-relation queries the response was YES. [2022-11-21 16:08:33,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16801 conditions, 10071 events. 4776/10071 cut-off events. For 431/456 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 80047 event pairs, 2275 based on Foata normal form. 3/4209 useless extension candidates. Maximal degree in co-relation 13396. Up to 1260 conditions per place. [2022-11-21 16:08:33,199 INFO L137 encePairwiseOnDemand]: 182/189 looper letters, 128 selfloop transitions, 18 changer transitions 0/263 dead transitions. [2022-11-21 16:08:33,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 263 transitions, 894 flow [2022-11-21 16:08:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:08:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:08:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2687 transitions. [2022-11-21 16:08:33,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7898295120517342 [2022-11-21 16:08:33,207 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2687 transitions. [2022-11-21 16:08:33,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2687 transitions. [2022-11-21 16:08:33,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:33,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2687 transitions. [2022-11-21 16:08:33,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 149.27777777777777) internal successors, (2687), 18 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:33,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:33,228 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:33,228 INFO L175 Difference]: Start difference. First operand has 160 places, 152 transitions, 334 flow. Second operand 18 states and 2687 transitions. [2022-11-21 16:08:33,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 263 transitions, 894 flow [2022-11-21 16:08:33,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 263 transitions, 892 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:08:33,239 INFO L231 Difference]: Finished difference. Result has 177 places, 164 transitions, 438 flow [2022-11-21 16:08:33,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=438, PETRI_PLACES=177, PETRI_TRANSITIONS=164} [2022-11-21 16:08:33,240 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 13 predicate places. [2022-11-21 16:08:33,240 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 164 transitions, 438 flow [2022-11-21 16:08:33,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 143.66666666666666) internal successors, (1724), 12 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:33,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:33,244 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:33,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:08:33,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:08:33,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-21 16:08:33,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:33,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1550103327, now seen corresponding path program 1 times [2022-11-21 16:08:33,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:33,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788623525] [2022-11-21 16:08:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:33,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:33,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:33,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788623525] [2022-11-21 16:08:33,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788623525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:08:33,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625904637] [2022-11-21 16:08:33,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:33,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:08:33,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:08:33,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:08:33,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:08:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:33,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:08:33,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:08:33,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:33,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:08:33,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625904637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:33,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:08:33,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:08:33,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687840817] [2022-11-21 16:08:33,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:33,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:08:33,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:33,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:08:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:08:33,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 189 [2022-11-21 16:08:33,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 164 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:33,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:33,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 189 [2022-11-21 16:08:33,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:36,911 INFO L130 PetriNetUnfolder]: 4776/10067 cut-off events. [2022-11-21 16:08:36,911 INFO L131 PetriNetUnfolder]: For 467/492 co-relation queries the response was YES. [2022-11-21 16:08:36,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16819 conditions, 10067 events. 4776/10067 cut-off events. For 467/492 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 79748 event pairs, 2275 based on Foata normal form. 4/4206 useless extension candidates. Maximal degree in co-relation 13439. Up to 5024 conditions per place. [2022-11-21 16:08:37,021 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 57 selfloop transitions, 11 changer transitions 0/185 dead transitions. [2022-11-21 16:08:37,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 185 transitions, 605 flow [2022-11-21 16:08:37,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:08:37,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:08:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1047 transitions. [2022-11-21 16:08:37,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7913832199546486 [2022-11-21 16:08:37,025 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1047 transitions. [2022-11-21 16:08:37,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1047 transitions. [2022-11-21 16:08:37,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:37,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1047 transitions. [2022-11-21 16:08:37,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 149.57142857142858) internal successors, (1047), 7 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,032 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,032 INFO L175 Difference]: Start difference. First operand has 177 places, 164 transitions, 438 flow. Second operand 7 states and 1047 transitions. [2022-11-21 16:08:37,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 185 transitions, 605 flow [2022-11-21 16:08:37,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 185 transitions, 573 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-21 16:08:37,042 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 401 flow [2022-11-21 16:08:37,042 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2022-11-21 16:08:37,044 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 9 predicate places. [2022-11-21 16:08:37,044 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 401 flow [2022-11-21 16:08:37,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:37,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:37,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:08:37,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-21 16:08:37,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-21 16:08:37,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2139722390, now seen corresponding path program 1 times [2022-11-21 16:08:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:37,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920736317] [2022-11-21 16:08:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:37,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:37,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920736317] [2022-11-21 16:08:37,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920736317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:37,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:37,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:08:37,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263791959] [2022-11-21 16:08:37,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:37,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:08:37,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:37,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:08:37,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:08:37,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 189 [2022-11-21 16:08:37,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 401 flow. Second operand has 7 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:37,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 189 [2022-11-21 16:08:37,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:41,210 INFO L130 PetriNetUnfolder]: 7388/15344 cut-off events. [2022-11-21 16:08:41,210 INFO L131 PetriNetUnfolder]: For 364/379 co-relation queries the response was YES. [2022-11-21 16:08:41,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26248 conditions, 15344 events. 7388/15344 cut-off events. For 364/379 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 134272 event pairs, 4539 based on Foata normal form. 0/7101 useless extension candidates. Maximal degree in co-relation 24168. Up to 9477 conditions per place. [2022-11-21 16:08:41,340 INFO L137 encePairwiseOnDemand]: 180/189 looper letters, 79 selfloop transitions, 8 changer transitions 0/197 dead transitions. [2022-11-21 16:08:41,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 197 transitions, 658 flow [2022-11-21 16:08:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:08:41,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 16:08:41,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1130 transitions. [2022-11-21 16:08:41,344 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7473544973544973 [2022-11-21 16:08:41,344 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1130 transitions. [2022-11-21 16:08:41,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1130 transitions. [2022-11-21 16:08:41,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:41,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1130 transitions. [2022-11-21 16:08:41,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.25) internal successors, (1130), 8 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:41,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:41,352 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:41,352 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 401 flow. Second operand 8 states and 1130 transitions. [2022-11-21 16:08:41,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 197 transitions, 658 flow [2022-11-21 16:08:41,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 197 transitions, 644 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:08:41,359 INFO L231 Difference]: Finished difference. Result has 178 places, 162 transitions, 419 flow [2022-11-21 16:08:41,359 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=419, PETRI_PLACES=178, PETRI_TRANSITIONS=162} [2022-11-21 16:08:41,361 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 14 predicate places. [2022-11-21 16:08:41,361 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 162 transitions, 419 flow [2022-11-21 16:08:41,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:41,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:41,362 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:41,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:08:41,363 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-21 16:08:41,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2003004642, now seen corresponding path program 1 times [2022-11-21 16:08:41,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:41,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46182938] [2022-11-21 16:08:41,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:41,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:41,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:41,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46182938] [2022-11-21 16:08:41,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46182938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:41,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:41,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:08:41,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781365250] [2022-11-21 16:08:41,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:41,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:08:41,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:41,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:08:41,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:08:41,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 189 [2022-11-21 16:08:41,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 162 transitions, 419 flow. Second operand has 10 states, 10 states have (on average 111.7) internal successors, (1117), 10 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:41,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:41,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 189 [2022-11-21 16:08:41,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:45,683 INFO L130 PetriNetUnfolder]: 8183/16827 cut-off events. [2022-11-21 16:08:45,683 INFO L131 PetriNetUnfolder]: For 1402/1432 co-relation queries the response was YES. [2022-11-21 16:08:45,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30374 conditions, 16827 events. 8183/16827 cut-off events. For 1402/1432 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 147246 event pairs, 6773 based on Foata normal form. 30/9557 useless extension candidates. Maximal degree in co-relation 29665. Up to 11615 conditions per place. [2022-11-21 16:08:45,837 INFO L137 encePairwiseOnDemand]: 176/189 looper letters, 84 selfloop transitions, 12 changer transitions 2/195 dead transitions. [2022-11-21 16:08:45,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 195 transitions, 690 flow [2022-11-21 16:08:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:08:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 16:08:45,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1401 transitions. [2022-11-21 16:08:45,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6177248677248677 [2022-11-21 16:08:45,843 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1401 transitions. [2022-11-21 16:08:45,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1401 transitions. [2022-11-21 16:08:45,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:45,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1401 transitions. [2022-11-21 16:08:45,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.75) internal successors, (1401), 12 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:45,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:45,855 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:45,855 INFO L175 Difference]: Start difference. First operand has 178 places, 162 transitions, 419 flow. Second operand 12 states and 1401 transitions. [2022-11-21 16:08:45,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 195 transitions, 690 flow [2022-11-21 16:08:45,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 195 transitions, 680 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:08:45,863 INFO L231 Difference]: Finished difference. Result has 190 places, 166 transitions, 460 flow [2022-11-21 16:08:45,864 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=460, PETRI_PLACES=190, PETRI_TRANSITIONS=166} [2022-11-21 16:08:45,864 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 26 predicate places. [2022-11-21 16:08:45,865 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 166 transitions, 460 flow [2022-11-21 16:08:45,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 111.7) internal successors, (1117), 10 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:45,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:45,866 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:45,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:08:45,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-21 16:08:45,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:45,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1306317362, now seen corresponding path program 1 times [2022-11-21 16:08:45,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:45,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572012320] [2022-11-21 16:08:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:45,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:46,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:46,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572012320] [2022-11-21 16:08:46,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572012320] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:08:46,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040045616] [2022-11-21 16:08:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:46,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:08:46,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:08:46,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:08:46,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:08:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:46,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-21 16:08:46,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:08:47,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 16:08:47,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:08:47,523 INFO L350 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 18 [2022-11-21 16:08:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:47,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:08:47,772 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_107 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_107) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) 9223372039002259456))) is different from false [2022-11-21 16:08:48,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:08:48,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-21 16:08:48,043 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:08:48,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-11-21 16:08:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:48,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040045616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:08:48,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:08:48,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2022-11-21 16:08:48,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530276191] [2022-11-21 16:08:48,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:08:48,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-21 16:08:48,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:48,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-21 16:08:48,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=995, Unknown=7, NotChecked=64, Total=1190 [2022-11-21 16:08:48,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 189 [2022-11-21 16:08:48,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 166 transitions, 460 flow. Second operand has 35 states, 35 states have (on average 117.14285714285714) internal successors, (4100), 35 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:48,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:48,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 189 [2022-11-21 16:08:48,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:56,604 INFO L130 PetriNetUnfolder]: 15481/28368 cut-off events. [2022-11-21 16:08:56,605 INFO L131 PetriNetUnfolder]: For 768/824 co-relation queries the response was YES. [2022-11-21 16:08:56,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51255 conditions, 28368 events. 15481/28368 cut-off events. For 768/824 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 253360 event pairs, 6457 based on Foata normal form. 0/13619 useless extension candidates. Maximal degree in co-relation 50708. Up to 14466 conditions per place. [2022-11-21 16:08:56,866 INFO L137 encePairwiseOnDemand]: 167/189 looper letters, 108 selfloop transitions, 31 changer transitions 0/239 dead transitions. [2022-11-21 16:08:56,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 239 transitions, 902 flow [2022-11-21 16:08:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:08:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:08:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2204 transitions. [2022-11-21 16:08:56,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.647854203409759 [2022-11-21 16:08:56,873 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2204 transitions. [2022-11-21 16:08:56,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2204 transitions. [2022-11-21 16:08:56,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:56,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2204 transitions. [2022-11-21 16:08:56,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 122.44444444444444) internal successors, (2204), 18 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:56,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:56,888 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:56,888 INFO L175 Difference]: Start difference. First operand has 190 places, 166 transitions, 460 flow. Second operand 18 states and 2204 transitions. [2022-11-21 16:08:56,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 239 transitions, 902 flow [2022-11-21 16:08:56,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 239 transitions, 887 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:08:56,897 INFO L231 Difference]: Finished difference. Result has 210 places, 192 transitions, 627 flow [2022-11-21 16:08:56,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=627, PETRI_PLACES=210, PETRI_TRANSITIONS=192} [2022-11-21 16:08:56,901 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 46 predicate places. [2022-11-21 16:08:56,901 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 192 transitions, 627 flow [2022-11-21 16:08:56,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 117.14285714285714) internal successors, (4100), 35 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:56,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:56,905 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:56,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:08:57,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:08:57,110 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-21 16:08:57,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:57,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1306317359, now seen corresponding path program 1 times [2022-11-21 16:08:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:57,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424113011] [2022-11-21 16:08:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:57,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:57,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424113011] [2022-11-21 16:08:57,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424113011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:08:57,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302573987] [2022-11-21 16:08:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:57,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:08:57,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:08:57,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:08:57,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:08:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:58,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 16:08:58,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:08:58,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 16:08:58,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:08:58,440 INFO L350 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 14 treesize of output 16 [2022-11-21 16:08:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:58,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:08:58,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:08:58,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-21 16:08:58,903 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:08:58,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-21 16:08:59,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:59,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302573987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:08:59,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:08:59,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2022-11-21 16:08:59,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114489192] [2022-11-21 16:08:59,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:08:59,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-21 16:08:59,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:59,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-21 16:08:59,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1050, Unknown=14, NotChecked=0, Total=1190 [2022-11-21 16:08:59,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 189 [2022-11-21 16:08:59,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 192 transitions, 627 flow. Second operand has 35 states, 35 states have (on average 117.14285714285714) internal successors, (4100), 35 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:59,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:59,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 189 [2022-11-21 16:08:59,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:09:08,172 INFO L130 PetriNetUnfolder]: 16180/29782 cut-off events. [2022-11-21 16:09:08,172 INFO L131 PetriNetUnfolder]: For 3879/4287 co-relation queries the response was YES. [2022-11-21 16:09:08,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57586 conditions, 29782 events. 16180/29782 cut-off events. For 3879/4287 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 269823 event pairs, 6726 based on Foata normal form. 2/14774 useless extension candidates. Maximal degree in co-relation 57011. Up to 15481 conditions per place. [2022-11-21 16:09:08,485 INFO L137 encePairwiseOnDemand]: 167/189 looper letters, 109 selfloop transitions, 35 changer transitions 0/244 dead transitions. [2022-11-21 16:09:08,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 244 transitions, 1062 flow [2022-11-21 16:09:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:09:08,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:09:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2203 transitions. [2022-11-21 16:09:08,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6475602586713698 [2022-11-21 16:09:08,502 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2203 transitions. [2022-11-21 16:09:08,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2203 transitions. [2022-11-21 16:09:08,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:09:08,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2203 transitions. [2022-11-21 16:09:08,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 122.38888888888889) internal successors, (2203), 18 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:08,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:08,532 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:08,533 INFO L175 Difference]: Start difference. First operand has 210 places, 192 transitions, 627 flow. Second operand 18 states and 2203 transitions. [2022-11-21 16:09:08,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 244 transitions, 1062 flow [2022-11-21 16:09:08,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 244 transitions, 1051 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 16:09:08,552 INFO L231 Difference]: Finished difference. Result has 223 places, 198 transitions, 730 flow [2022-11-21 16:09:08,553 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=730, PETRI_PLACES=223, PETRI_TRANSITIONS=198} [2022-11-21 16:09:08,553 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 59 predicate places. [2022-11-21 16:09:08,554 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 198 transitions, 730 flow [2022-11-21 16:09:08,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 117.14285714285714) internal successors, (4100), 35 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:08,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:09:08,575 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:09:08,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:09:08,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554ee8b-1ae9-4764-bfa3-688644ddb03f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:09:08,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-21 16:09:08,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1306317358, now seen corresponding path program 1 times [2022-11-21 16:09:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:08,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719520434] [2022-11-21 16:09:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:09:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:09,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719520434] [2022-11-21 16:09:09,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719520434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:09,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:09,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:09:09,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614283916] [2022-11-21 16:09:09,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:09,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:09:09,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:09:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:09,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 189 [2022-11-21 16:09:09,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 198 transitions, 730 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:09,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:09:09,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 189 [2022-11-21 16:09:09,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:09:14,206 INFO L130 PetriNetUnfolder]: 7839/20837 cut-off events. [2022-11-21 16:09:14,206 INFO L131 PetriNetUnfolder]: For 8765/8861 co-relation queries the response was YES. [2022-11-21 16:09:14,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38787 conditions, 20837 events. 7839/20837 cut-off events. For 8765/8861 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 230506 event pairs, 1704 based on Foata normal form. 1/12168 useless extension candidates. Maximal degree in co-relation 38495. Up to 6886 conditions per place. [2022-11-21 16:09:14,676 INFO L137 encePairwiseOnDemand]: 185/189 looper letters, 44 selfloop transitions, 2 changer transitions 0/214 dead transitions. [2022-11-21 16:09:14,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 214 transitions, 869 flow [2022-11-21 16:09:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:09:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:09:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2022-11-21 16:09:14,678 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8677248677248677 [2022-11-21 16:09:14,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2022-11-21 16:09:14,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2022-11-21 16:09:14,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:09:14,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2022-11-21 16:09:14,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:14,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:14,682 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:14,683 INFO L175 Difference]: Start difference. First operand has 223 places, 198 transitions, 730 flow. Second operand 3 states and 492 transitions. [2022-11-21 16:09:14,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 214 transitions, 869 flow [2022-11-21 16:09:14,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 214 transitions, 833 flow, removed 3 selfloop flow, removed 14 redundant places. [2022-11-21 16:09:14,714 INFO L231 Difference]: Finished difference. Result has 212 places, 197 transitions, 702 flow [2022-11-21 16:09:14,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=702, PETRI_PLACES=212, PETRI_TRANSITIONS=197} [2022-11-21 16:09:14,715 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 48 predicate places. [2022-11-21 16:09:14,716 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 197 transitions, 702 flow [2022-11-21 16:09:14,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:14,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:09:14,716 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:09:14,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:09:14,717 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-21 16:09:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:14,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1800110982, now seen corresponding path program 1 times [2022-11-21 16:09:14,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:14,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186752233] [2022-11-21 16:09:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:14,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:09:15,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:15,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186752233] [2022-11-21 16:09:15,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186752233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:15,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:15,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:09:15,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263970915] [2022-11-21 16:09:15,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:15,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:09:15,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:15,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:09:15,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:09:15,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 189 [2022-11-21 16:09:15,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 197 transitions, 702 flow. Second operand has 10 states, 10 states have (on average 112.8) internal successors, (1128), 10 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:15,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:09:15,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 189 [2022-11-21 16:09:15,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand