./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:07:02,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:07:02,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:07:02,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:07:02,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:07:02,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:07:02,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:07:02,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:07:02,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:07:02,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:07:02,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:07:02,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:07:02,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:07:02,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:07:02,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:07:02,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:07:02,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:07:02,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:07:02,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:07:02,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:07:02,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:07:02,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:07:02,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:07:02,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:07:02,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:07:02,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:07:02,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:07:02,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:07:02,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:07:02,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:07:02,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:07:02,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:07:02,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:07:02,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:07:02,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:07:02,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:07:02,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:07:02,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:07:02,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:07:02,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:07:02,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:07:02,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:07:02,377 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:07:02,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:07:02,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:07:02,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:07:02,379 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:07:02,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:07:02,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:07:02,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:07:02,380 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:07:02,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:07:02,381 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:07:02,381 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:07:02,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:07:02,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:07:02,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:07:02,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:07:02,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:07:02,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:07:02,383 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:07:02,383 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:07:02,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:07:02,383 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:07:02,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:07:02,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:07:02,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:07:02,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:07:02,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:07:02,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:07:02,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:07:02,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:07:02,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:07:02,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:07:02,385 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:07:02,386 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:07:02,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:07:02,386 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_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 [2022-11-18 20:07:02,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:07:02,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:07:02,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:07:02,752 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:07:02,753 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:07:02,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-11-18 20:07:02,819 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/data/3150d97ce/bf139444ab8b4905b80bbcce74542f5b/FLAGc2906d2ae [2022-11-18 20:07:03,378 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:07:03,378 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-11-18 20:07:03,386 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/data/3150d97ce/bf139444ab8b4905b80bbcce74542f5b/FLAGc2906d2ae [2022-11-18 20:07:03,718 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/data/3150d97ce/bf139444ab8b4905b80bbcce74542f5b [2022-11-18 20:07:03,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:07:03,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:07:03,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:07:03,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:07:03,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:07:03,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:07:03" (1/1) ... [2022-11-18 20:07:03,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc2ba82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:03, skipping insertion in model container [2022-11-18 20:07:03,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:07:03" (1/1) ... [2022-11-18 20:07:03,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:07:03,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:07:04,009 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-11-18 20:07:04,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:07:04,024 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:07:04,047 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-11-18 20:07:04,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:07:04,063 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:07:04,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04 WrapperNode [2022-11-18 20:07:04,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:07:04,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:07:04,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:07:04,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:07:04,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04" (1/1) ... [2022-11-18 20:07:04,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04" (1/1) ... [2022-11-18 20:07:04,102 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-11-18 20:07:04,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:07:04,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:07:04,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:07:04,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:07:04,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04" (1/1) ... [2022-11-18 20:07:04,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04" (1/1) ... [2022-11-18 20:07:04,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04" (1/1) ... [2022-11-18 20:07:04,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04" (1/1) ... [2022-11-18 20:07:04,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04" (1/1) ... [2022-11-18 20:07:04,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04" (1/1) ... [2022-11-18 20:07:04,130 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04" (1/1) ... [2022-11-18 20:07:04,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04" (1/1) ... [2022-11-18 20:07:04,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:07:04,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:07:04,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:07:04,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:07:04,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04" (1/1) ... [2022-11-18 20:07:04,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:07:04,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:04,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:07:04,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:07:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:07:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:07:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:07:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:07:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:07:04,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:07:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:07:04,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:07:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:07:04,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:07:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:07:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:07:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:07:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:07:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:07:04,227 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:07:04,331 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:07:04,333 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:07:04,702 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:07:04,721 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:07:04,722 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:07:04,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:07:04 BoogieIcfgContainer [2022-11-18 20:07:04,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:07:04,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:07:04,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:07:04,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:07:04,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:07:03" (1/3) ... [2022-11-18 20:07:04,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c83749a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:07:04, skipping insertion in model container [2022-11-18 20:07:04,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:04" (2/3) ... [2022-11-18 20:07:04,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c83749a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:07:04, skipping insertion in model container [2022-11-18 20:07:04,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:07:04" (3/3) ... [2022-11-18 20:07:04,749 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2022-11-18 20:07:04,758 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:07:04,781 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:07:04,782 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 20:07:04,782 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:07:04,979 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:07:05,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 175 transitions, 374 flow [2022-11-18 20:07:05,173 INFO L130 PetriNetUnfolder]: 12/172 cut-off events. [2022-11-18 20:07:05,175 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:07:05,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 12/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 164 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2022-11-18 20:07:05,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 175 transitions, 374 flow [2022-11-18 20:07:05,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 151 transitions, 317 flow [2022-11-18 20:07:05,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:07:05,221 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;@1c80e287, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:07:05,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 20:07:05,254 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-18 20:07:05,254 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:07:05,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:05,255 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] [2022-11-18 20:07:05,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:05,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash -998992822, now seen corresponding path program 1 times [2022-11-18 20:07:05,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:05,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428303689] [2022-11-18 20:07:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:05,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:05,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:05,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428303689] [2022-11-18 20:07:05,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428303689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:05,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:05,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:07:05,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947621993] [2022-11-18 20:07:05,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:05,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:07:05,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:05,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:07:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:07:05,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 175 [2022-11-18 20:07:05,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 151 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:05,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:05,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 175 [2022-11-18 20:07:05,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:05,999 INFO L130 PetriNetUnfolder]: 7/236 cut-off events. [2022-11-18 20:07:05,999 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 20:07:06,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 236 events. 7/236 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 562 event pairs, 0 based on Foata normal form. 22/232 useless extension candidates. Maximal degree in co-relation 218. Up to 18 conditions per place. [2022-11-18 20:07:06,007 INFO L137 encePairwiseOnDemand]: 162/175 looper letters, 26 selfloop transitions, 4 changer transitions 3/157 dead transitions. [2022-11-18 20:07:06,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 157 transitions, 404 flow [2022-11-18 20:07:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:07:06,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:07:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 784 transitions. [2022-11-18 20:07:06,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.896 [2022-11-18 20:07:06,044 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 784 transitions. [2022-11-18 20:07:06,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 784 transitions. [2022-11-18 20:07:06,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:06,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 784 transitions. [2022-11-18 20:07:06,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:06,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:06,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:06,082 INFO L175 Difference]: Start difference. First operand has 150 places, 151 transitions, 317 flow. Second operand 5 states and 784 transitions. [2022-11-18 20:07:06,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 157 transitions, 404 flow [2022-11-18 20:07:06,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 157 transitions, 386 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:07:06,095 INFO L231 Difference]: Finished difference. Result has 152 places, 144 transitions, 318 flow [2022-11-18 20:07:06,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=152, PETRI_TRANSITIONS=144} [2022-11-18 20:07:06,102 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 2 predicate places. [2022-11-18 20:07:06,103 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 144 transitions, 318 flow [2022-11-18 20:07:06,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:06,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:06,106 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, 1] [2022-11-18 20:07:06,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:07:06,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:06,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:06,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1442027047, now seen corresponding path program 1 times [2022-11-18 20:07:06,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:06,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635417173] [2022-11-18 20:07:06,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:06,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:06,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:06,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635417173] [2022-11-18 20:07:06,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635417173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:06,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498283735] [2022-11-18 20:07:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:06,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:06,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:06,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:06,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:07:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:07:06,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:06,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:06,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498283735] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:06,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:06,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:07:06,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493240854] [2022-11-18 20:07:06,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:06,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:07:06,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:06,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:07:06,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:07:06,737 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 175 [2022-11-18 20:07:06,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 144 transitions, 318 flow. Second operand has 12 states, 12 states have (on average 150.66666666666666) internal successors, (1808), 12 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:06,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:06,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 175 [2022-11-18 20:07:06,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:07,103 INFO L130 PetriNetUnfolder]: 16/507 cut-off events. [2022-11-18 20:07:07,104 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-18 20:07:07,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 507 events. 16/507 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2142 event pairs, 0 based on Foata normal form. 3/460 useless extension candidates. Maximal degree in co-relation 456. Up to 13 conditions per place. [2022-11-18 20:07:07,111 INFO L137 encePairwiseOnDemand]: 168/175 looper letters, 53 selfloop transitions, 18 changer transitions 0/195 dead transitions. [2022-11-18 20:07:07,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 195 transitions, 608 flow [2022-11-18 20:07:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:07:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:07:07,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2738 transitions. [2022-11-18 20:07:07,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8692063492063492 [2022-11-18 20:07:07,120 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2738 transitions. [2022-11-18 20:07:07,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2738 transitions. [2022-11-18 20:07:07,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:07,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2738 transitions. [2022-11-18 20:07:07,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 152.11111111111111) internal successors, (2738), 18 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:07,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 175.0) internal successors, (3325), 19 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:07,143 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 175.0) internal successors, (3325), 19 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:07,143 INFO L175 Difference]: Start difference. First operand has 152 places, 144 transitions, 318 flow. Second operand 18 states and 2738 transitions. [2022-11-18 20:07:07,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 195 transitions, 608 flow [2022-11-18 20:07:07,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 195 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:07:07,150 INFO L231 Difference]: Finished difference. Result has 169 places, 156 transitions, 422 flow [2022-11-18 20:07:07,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=422, PETRI_PLACES=169, PETRI_TRANSITIONS=156} [2022-11-18 20:07:07,151 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 19 predicate places. [2022-11-18 20:07:07,152 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 156 transitions, 422 flow [2022-11-18 20:07:07,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 150.66666666666666) internal successors, (1808), 12 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:07,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:07,154 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, 1] [2022-11-18 20:07:07,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:07,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:07,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:07,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:07,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1753165890, now seen corresponding path program 1 times [2022-11-18 20:07:07,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:07,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473901545] [2022-11-18 20:07:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:07,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:07,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473901545] [2022-11-18 20:07:07,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473901545] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:07,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319889525] [2022-11-18 20:07:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:07,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:07,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:07,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:07,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:07:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:07,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:07:07,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:07,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:07,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319889525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:07,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:07:07,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:07:07,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225841731] [2022-11-18 20:07:07,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:07,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:07:07,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:07,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:07:07,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:07:07,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 175 [2022-11-18 20:07:07,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 156 transitions, 422 flow. Second operand has 6 states, 6 states have (on average 150.33333333333334) internal successors, (902), 6 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:07,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:07,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 175 [2022-11-18 20:07:07,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:08,022 INFO L130 PetriNetUnfolder]: 16/503 cut-off events. [2022-11-18 20:07:08,022 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-18 20:07:08,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 503 events. 16/503 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2110 event pairs, 0 based on Foata normal form. 4/457 useless extension candidates. Maximal degree in co-relation 500. Up to 36 conditions per place. [2022-11-18 20:07:08,027 INFO L137 encePairwiseOnDemand]: 170/175 looper letters, 27 selfloop transitions, 11 changer transitions 0/162 dead transitions. [2022-11-18 20:07:08,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 162 transitions, 499 flow [2022-11-18 20:07:08,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:07:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:07:08,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1066 transitions. [2022-11-18 20:07:08,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8702040816326531 [2022-11-18 20:07:08,031 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1066 transitions. [2022-11-18 20:07:08,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1066 transitions. [2022-11-18 20:07:08,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:08,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1066 transitions. [2022-11-18 20:07:08,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:08,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:08,040 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:08,040 INFO L175 Difference]: Start difference. First operand has 169 places, 156 transitions, 422 flow. Second operand 7 states and 1066 transitions. [2022-11-18 20:07:08,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 162 transitions, 499 flow [2022-11-18 20:07:08,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 162 transitions, 467 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:07:08,049 INFO L231 Difference]: Finished difference. Result has 165 places, 152 transitions, 385 flow [2022-11-18 20:07:08,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=165, PETRI_TRANSITIONS=152} [2022-11-18 20:07:08,052 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 15 predicate places. [2022-11-18 20:07:08,053 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 152 transitions, 385 flow [2022-11-18 20:07:08,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.33333333333334) internal successors, (902), 6 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:08,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:08,054 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] [2022-11-18 20:07:08,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:08,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:08,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:08,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:08,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1007841452, now seen corresponding path program 1 times [2022-11-18 20:07:08,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:08,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744696932] [2022-11-18 20:07:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:08,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:08,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:08,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744696932] [2022-11-18 20:07:08,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744696932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:08,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:08,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:07:08,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356759331] [2022-11-18 20:07:08,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:08,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:07:08,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:08,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:07:08,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:07:08,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 175 [2022-11-18 20:07:08,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 152 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:08,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:08,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 175 [2022-11-18 20:07:08,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:08,842 INFO L130 PetriNetUnfolder]: 231/1493 cut-off events. [2022-11-18 20:07:08,842 INFO L131 PetriNetUnfolder]: For 42/57 co-relation queries the response was YES. [2022-11-18 20:07:08,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 1493 events. 231/1493 cut-off events. For 42/57 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11517 event pairs, 75 based on Foata normal form. 0/1293 useless extension candidates. Maximal degree in co-relation 1856. Up to 291 conditions per place. [2022-11-18 20:07:08,860 INFO L137 encePairwiseOnDemand]: 169/175 looper letters, 28 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2022-11-18 20:07:08,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 168 transitions, 492 flow [2022-11-18 20:07:08,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:07:08,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:07:08,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 779 transitions. [2022-11-18 20:07:08,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8902857142857142 [2022-11-18 20:07:08,863 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 779 transitions. [2022-11-18 20:07:08,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 779 transitions. [2022-11-18 20:07:08,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:08,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 779 transitions. [2022-11-18 20:07:08,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.8) internal successors, (779), 5 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:08,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:08,869 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:08,869 INFO L175 Difference]: Start difference. First operand has 165 places, 152 transitions, 385 flow. Second operand 5 states and 779 transitions. [2022-11-18 20:07:08,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 168 transitions, 492 flow [2022-11-18 20:07:08,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 168 transitions, 478 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:07:08,877 INFO L231 Difference]: Finished difference. Result has 167 places, 155 transitions, 401 flow [2022-11-18 20:07:08,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=160, 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=401, PETRI_PLACES=167, PETRI_TRANSITIONS=155} [2022-11-18 20:07:08,879 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 17 predicate places. [2022-11-18 20:07:08,880 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 155 transitions, 401 flow [2022-11-18 20:07:08,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:08,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:08,880 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] [2022-11-18 20:07:08,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:07:08,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:08,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:08,881 INFO L85 PathProgramCache]: Analyzing trace with hash -275877623, now seen corresponding path program 1 times [2022-11-18 20:07:08,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:08,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430658134] [2022-11-18 20:07:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:08,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:08,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:08,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430658134] [2022-11-18 20:07:08,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430658134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:08,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:08,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:07:08,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255742926] [2022-11-18 20:07:08,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:08,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:07:08,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:08,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:07:08,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:07:08,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 175 [2022-11-18 20:07:08,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 155 transitions, 401 flow. Second operand has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:08,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:08,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 175 [2022-11-18 20:07:08,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:09,424 INFO L130 PetriNetUnfolder]: 306/1488 cut-off events. [2022-11-18 20:07:09,424 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2022-11-18 20:07:09,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2488 conditions, 1488 events. 306/1488 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 12518 event pairs, 135 based on Foata normal form. 0/1238 useless extension candidates. Maximal degree in co-relation 1979. Up to 406 conditions per place. [2022-11-18 20:07:09,449 INFO L137 encePairwiseOnDemand]: 169/175 looper letters, 27 selfloop transitions, 4 changer transitions 0/170 dead transitions. [2022-11-18 20:07:09,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 170 transitions, 503 flow [2022-11-18 20:07:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:07:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:07:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 778 transitions. [2022-11-18 20:07:09,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8891428571428571 [2022-11-18 20:07:09,452 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 778 transitions. [2022-11-18 20:07:09,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 778 transitions. [2022-11-18 20:07:09,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:09,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 778 transitions. [2022-11-18 20:07:09,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.6) internal successors, (778), 5 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:09,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:09,458 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:09,458 INFO L175 Difference]: Start difference. First operand has 167 places, 155 transitions, 401 flow. Second operand 5 states and 778 transitions. [2022-11-18 20:07:09,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 170 transitions, 503 flow [2022-11-18 20:07:09,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 170 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:07:09,464 INFO L231 Difference]: Finished difference. Result has 173 places, 158 transitions, 429 flow [2022-11-18 20:07:09,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=173, PETRI_TRANSITIONS=158} [2022-11-18 20:07:09,467 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 23 predicate places. [2022-11-18 20:07:09,468 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 158 transitions, 429 flow [2022-11-18 20:07:09,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:09,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:09,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:09,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:07:09,469 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:09,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:09,470 INFO L85 PathProgramCache]: Analyzing trace with hash -184493772, now seen corresponding path program 1 times [2022-11-18 20:07:09,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:09,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517714931] [2022-11-18 20:07:09,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:09,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:09,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:09,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517714931] [2022-11-18 20:07:09,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517714931] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:09,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155472299] [2022-11-18 20:07:09,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:09,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:09,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:09,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:09,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:07:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:09,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:07:09,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:07:09,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:09,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155472299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:09,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:07:09,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-18 20:07:09,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565704744] [2022-11-18 20:07:09,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:09,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:07:09,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:09,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:07:09,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:07:09,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 175 [2022-11-18 20:07:09,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 158 transitions, 429 flow. Second operand has 7 states, 7 states have (on average 139.57142857142858) internal successors, (977), 7 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:09,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:09,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 175 [2022-11-18 20:07:09,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:10,358 INFO L130 PetriNetUnfolder]: 271/1547 cut-off events. [2022-11-18 20:07:10,358 INFO L131 PetriNetUnfolder]: For 315/320 co-relation queries the response was YES. [2022-11-18 20:07:10,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2663 conditions, 1547 events. 271/1547 cut-off events. For 315/320 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11640 event pairs, 234 based on Foata normal form. 0/1334 useless extension candidates. Maximal degree in co-relation 2355. Up to 565 conditions per place. [2022-11-18 20:07:10,380 INFO L137 encePairwiseOnDemand]: 166/175 looper letters, 47 selfloop transitions, 8 changer transitions 0/175 dead transitions. [2022-11-18 20:07:10,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 175 transitions, 584 flow [2022-11-18 20:07:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:07:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:07:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1144 transitions. [2022-11-18 20:07:10,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171428571428572 [2022-11-18 20:07:10,384 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1144 transitions. [2022-11-18 20:07:10,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1144 transitions. [2022-11-18 20:07:10,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:10,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1144 transitions. [2022-11-18 20:07:10,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:10,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:10,391 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:10,392 INFO L175 Difference]: Start difference. First operand has 173 places, 158 transitions, 429 flow. Second operand 8 states and 1144 transitions. [2022-11-18 20:07:10,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 175 transitions, 584 flow [2022-11-18 20:07:10,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 175 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:07:10,397 INFO L231 Difference]: Finished difference. Result has 182 places, 160 transitions, 461 flow [2022-11-18 20:07:10,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=461, PETRI_PLACES=182, PETRI_TRANSITIONS=160} [2022-11-18 20:07:10,398 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 32 predicate places. [2022-11-18 20:07:10,399 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 160 transitions, 461 flow [2022-11-18 20:07:10,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.57142857142858) internal successors, (977), 7 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:10,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:10,400 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, 1, 1, 1, 1, 1] [2022-11-18 20:07:10,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:07:10,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:07:10,605 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2029171310, now seen corresponding path program 1 times [2022-11-18 20:07:10,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:10,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129461546] [2022-11-18 20:07:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:10,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:10,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129461546] [2022-11-18 20:07:10,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129461546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:10,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:10,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:07:10,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449398512] [2022-11-18 20:07:10,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:10,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:07:10,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:10,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:07:10,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:07:10,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 175 [2022-11-18 20:07:10,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 160 transitions, 461 flow. Second operand has 8 states, 8 states have (on average 134.375) internal successors, (1075), 8 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:10,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:10,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 175 [2022-11-18 20:07:10,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:11,605 INFO L130 PetriNetUnfolder]: 537/1990 cut-off events. [2022-11-18 20:07:11,605 INFO L131 PetriNetUnfolder]: For 489/500 co-relation queries the response was YES. [2022-11-18 20:07:11,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3551 conditions, 1990 events. 537/1990 cut-off events. For 489/500 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 16924 event pairs, 402 based on Foata normal form. 11/1658 useless extension candidates. Maximal degree in co-relation 3145. Up to 945 conditions per place. [2022-11-18 20:07:11,633 INFO L137 encePairwiseOnDemand]: 162/175 looper letters, 62 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2022-11-18 20:07:11,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 192 transitions, 689 flow [2022-11-18 20:07:11,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:07:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:07:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1521 transitions. [2022-11-18 20:07:11,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7901298701298701 [2022-11-18 20:07:11,639 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1521 transitions. [2022-11-18 20:07:11,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1521 transitions. [2022-11-18 20:07:11,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:11,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1521 transitions. [2022-11-18 20:07:11,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 138.27272727272728) internal successors, (1521), 11 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:11,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 175.0) internal successors, (2100), 12 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:11,649 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 175.0) internal successors, (2100), 12 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:11,650 INFO L175 Difference]: Start difference. First operand has 182 places, 160 transitions, 461 flow. Second operand 11 states and 1521 transitions. [2022-11-18 20:07:11,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 192 transitions, 689 flow [2022-11-18 20:07:11,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 192 transitions, 679 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:07:11,657 INFO L231 Difference]: Finished difference. Result has 193 places, 165 transitions, 510 flow [2022-11-18 20:07:11,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=510, PETRI_PLACES=193, PETRI_TRANSITIONS=165} [2022-11-18 20:07:11,658 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 43 predicate places. [2022-11-18 20:07:11,658 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 165 transitions, 510 flow [2022-11-18 20:07:11,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.375) internal successors, (1075), 8 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:11,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:11,659 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, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:11,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:07:11,659 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:11,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:11,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1520199304, now seen corresponding path program 1 times [2022-11-18 20:07:11,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:11,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049219942] [2022-11-18 20:07:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:11,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:11,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:11,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049219942] [2022-11-18 20:07:11,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049219942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:11,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:11,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:07:11,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426408375] [2022-11-18 20:07:11,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:11,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:07:11,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:11,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:07:11,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:07:11,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 175 [2022-11-18 20:07:11,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 165 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:11,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:11,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 175 [2022-11-18 20:07:11,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:12,670 INFO L130 PetriNetUnfolder]: 1224/3272 cut-off events. [2022-11-18 20:07:12,670 INFO L131 PetriNetUnfolder]: For 840/840 co-relation queries the response was YES. [2022-11-18 20:07:12,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6242 conditions, 3272 events. 1224/3272 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 28783 event pairs, 56 based on Foata normal form. 88/2766 useless extension candidates. Maximal degree in co-relation 5866. Up to 1008 conditions per place. [2022-11-18 20:07:12,714 INFO L137 encePairwiseOnDemand]: 168/175 looper letters, 27 selfloop transitions, 8 changer transitions 0/171 dead transitions. [2022-11-18 20:07:12,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 171 transitions, 591 flow [2022-11-18 20:07:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:07:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:07:12,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 878 transitions. [2022-11-18 20:07:12,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8361904761904762 [2022-11-18 20:07:12,718 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 878 transitions. [2022-11-18 20:07:12,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 878 transitions. [2022-11-18 20:07:12,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:12,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 878 transitions. [2022-11-18 20:07:12,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:12,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:12,725 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:12,725 INFO L175 Difference]: Start difference. First operand has 193 places, 165 transitions, 510 flow. Second operand 6 states and 878 transitions. [2022-11-18 20:07:12,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 171 transitions, 591 flow [2022-11-18 20:07:12,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 171 transitions, 575 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:07:12,748 INFO L231 Difference]: Finished difference. Result has 190 places, 163 transitions, 501 flow [2022-11-18 20:07:12,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=501, PETRI_PLACES=190, PETRI_TRANSITIONS=163} [2022-11-18 20:07:12,751 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 40 predicate places. [2022-11-18 20:07:12,751 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 163 transitions, 501 flow [2022-11-18 20:07:12,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:12,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:12,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:12,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:07:12,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:12,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:12,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1487333767, now seen corresponding path program 1 times [2022-11-18 20:07:12,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:12,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891967750] [2022-11-18 20:07:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:12,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:12,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:12,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891967750] [2022-11-18 20:07:12,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891967750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:12,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083883628] [2022-11-18 20:07:12,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:12,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:12,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:12,899 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:12,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:07:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:13,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:07:13,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:13,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:13,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083883628] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:13,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:13,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:07:13,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867780696] [2022-11-18 20:07:13,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:13,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:07:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:07:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:07:13,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 175 [2022-11-18 20:07:13,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 163 transitions, 501 flow. Second operand has 12 states, 12 states have (on average 151.75) internal successors, (1821), 12 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:13,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:13,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 175 [2022-11-18 20:07:13,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:14,151 INFO L130 PetriNetUnfolder]: 650/2562 cut-off events. [2022-11-18 20:07:14,152 INFO L131 PetriNetUnfolder]: For 679/679 co-relation queries the response was YES. [2022-11-18 20:07:14,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5192 conditions, 2562 events. 650/2562 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 23892 event pairs, 87 based on Foata normal form. 57/2314 useless extension candidates. Maximal degree in co-relation 5133. Up to 405 conditions per place. [2022-11-18 20:07:14,204 INFO L137 encePairwiseOnDemand]: 168/175 looper letters, 68 selfloop transitions, 18 changer transitions 0/230 dead transitions. [2022-11-18 20:07:14,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 230 transitions, 881 flow [2022-11-18 20:07:14,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:07:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:07:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2771 transitions. [2022-11-18 20:07:14,211 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8796825396825397 [2022-11-18 20:07:14,212 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2771 transitions. [2022-11-18 20:07:14,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2771 transitions. [2022-11-18 20:07:14,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:14,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2771 transitions. [2022-11-18 20:07:14,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.94444444444446) internal successors, (2771), 18 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:14,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 175.0) internal successors, (3325), 19 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:14,228 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 175.0) internal successors, (3325), 19 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:14,228 INFO L175 Difference]: Start difference. First operand has 190 places, 163 transitions, 501 flow. Second operand 18 states and 2771 transitions. [2022-11-18 20:07:14,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 230 transitions, 881 flow [2022-11-18 20:07:14,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 230 transitions, 865 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:07:14,238 INFO L231 Difference]: Finished difference. Result has 206 places, 175 transitions, 591 flow [2022-11-18 20:07:14,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=591, PETRI_PLACES=206, PETRI_TRANSITIONS=175} [2022-11-18 20:07:14,239 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 56 predicate places. [2022-11-18 20:07:14,239 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 175 transitions, 591 flow [2022-11-18 20:07:14,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 151.75) internal successors, (1821), 12 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:14,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:14,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:14,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 20:07:14,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:14,446 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:14,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1137293021, now seen corresponding path program 1 times [2022-11-18 20:07:14,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:14,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56572419] [2022-11-18 20:07:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:14,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:14,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:14,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56572419] [2022-11-18 20:07:14,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56572419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:14,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191715149] [2022-11-18 20:07:14,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:14,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:14,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:14,629 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:14,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:07:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:14,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:07:14,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:14,788 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:14,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:14,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191715149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:14,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:07:14,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:07:14,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57755906] [2022-11-18 20:07:14,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:14,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:07:14,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:14,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:07:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:07:14,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 175 [2022-11-18 20:07:14,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 175 transitions, 591 flow. Second operand has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:14,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:14,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 175 [2022-11-18 20:07:14,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:15,633 INFO L130 PetriNetUnfolder]: 594/2412 cut-off events. [2022-11-18 20:07:15,633 INFO L131 PetriNetUnfolder]: For 1338/1338 co-relation queries the response was YES. [2022-11-18 20:07:15,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5296 conditions, 2412 events. 594/2412 cut-off events. For 1338/1338 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 22154 event pairs, 42 based on Foata normal form. 76/2199 useless extension candidates. Maximal degree in co-relation 5244. Up to 564 conditions per place. [2022-11-18 20:07:15,689 INFO L137 encePairwiseOnDemand]: 170/175 looper letters, 32 selfloop transitions, 11 changer transitions 0/187 dead transitions. [2022-11-18 20:07:15,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 187 transitions, 700 flow [2022-11-18 20:07:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:07:15,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:07:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1078 transitions. [2022-11-18 20:07:15,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88 [2022-11-18 20:07:15,694 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1078 transitions. [2022-11-18 20:07:15,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1078 transitions. [2022-11-18 20:07:15,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:15,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1078 transitions. [2022-11-18 20:07:15,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:15,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:15,713 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:15,713 INFO L175 Difference]: Start difference. First operand has 206 places, 175 transitions, 591 flow. Second operand 7 states and 1078 transitions. [2022-11-18 20:07:15,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 187 transitions, 700 flow [2022-11-18 20:07:15,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 187 transitions, 668 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:07:15,737 INFO L231 Difference]: Finished difference. Result has 202 places, 171 transitions, 554 flow [2022-11-18 20:07:15,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=554, PETRI_PLACES=202, PETRI_TRANSITIONS=171} [2022-11-18 20:07:15,739 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 52 predicate places. [2022-11-18 20:07:15,739 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 171 transitions, 554 flow [2022-11-18 20:07:15,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:15,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:15,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:15,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:15,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:15,949 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:15,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1640763601, now seen corresponding path program 1 times [2022-11-18 20:07:15,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:15,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031113130] [2022-11-18 20:07:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:15,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:07:16,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:16,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031113130] [2022-11-18 20:07:16,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031113130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:16,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453981930] [2022-11-18 20:07:16,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:16,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:16,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:16,088 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:16,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:07:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:07:16,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:16,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:16,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453981930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:16,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:16,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-18 20:07:16,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569744883] [2022-11-18 20:07:16,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:16,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:07:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:07:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:07:16,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 175 [2022-11-18 20:07:16,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 171 transitions, 554 flow. Second operand has 23 states, 23 states have (on average 130.65217391304347) internal successors, (3005), 23 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:16,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:16,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 175 [2022-11-18 20:07:16,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:18,658 INFO L130 PetriNetUnfolder]: 586/2947 cut-off events. [2022-11-18 20:07:18,659 INFO L131 PetriNetUnfolder]: For 848/4576 co-relation queries the response was YES. [2022-11-18 20:07:18,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5657 conditions, 2947 events. 586/2947 cut-off events. For 848/4576 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 26885 event pairs, 132 based on Foata normal form. 82/2838 useless extension candidates. Maximal degree in co-relation 5482. Up to 263 conditions per place. [2022-11-18 20:07:18,729 INFO L137 encePairwiseOnDemand]: 157/175 looper letters, 141 selfloop transitions, 33 changer transitions 0/290 dead transitions. [2022-11-18 20:07:18,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 290 transitions, 1278 flow [2022-11-18 20:07:18,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:07:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 20:07:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3725 transitions. [2022-11-18 20:07:18,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7602040816326531 [2022-11-18 20:07:18,739 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3725 transitions. [2022-11-18 20:07:18,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3725 transitions. [2022-11-18 20:07:18,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:18,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3725 transitions. [2022-11-18 20:07:18,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 133.03571428571428) internal successors, (3725), 28 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:18,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 175.0) internal successors, (5075), 29 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:18,760 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 175.0) internal successors, (5075), 29 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:18,760 INFO L175 Difference]: Start difference. First operand has 202 places, 171 transitions, 554 flow. Second operand 28 states and 3725 transitions. [2022-11-18 20:07:18,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 290 transitions, 1278 flow [2022-11-18 20:07:18,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 290 transitions, 1264 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:07:18,772 INFO L231 Difference]: Finished difference. Result has 230 places, 186 transitions, 701 flow [2022-11-18 20:07:18,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=701, PETRI_PLACES=230, PETRI_TRANSITIONS=186} [2022-11-18 20:07:18,773 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 80 predicate places. [2022-11-18 20:07:18,773 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 186 transitions, 701 flow [2022-11-18 20:07:18,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 130.65217391304347) internal successors, (3005), 23 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:18,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:18,775 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:18,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:18,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:18,980 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:18,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:18,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1660894602, now seen corresponding path program 2 times [2022-11-18 20:07:18,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:18,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024075284] [2022-11-18 20:07:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:18,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:19,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:19,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024075284] [2022-11-18 20:07:19,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024075284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:19,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870799217] [2022-11-18 20:07:19,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:07:19,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:19,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:19,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:19,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:07:19,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:07:19,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:19,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:07:19,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:07:19,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:07:19,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870799217] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:19,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:19,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:07:19,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618383185] [2022-11-18 20:07:19,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:19,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:07:19,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:19,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:07:19,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:07:19,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 175 [2022-11-18 20:07:19,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 186 transitions, 701 flow. Second operand has 18 states, 18 states have (on average 136.61111111111111) internal successors, (2459), 18 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:19,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:19,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 175 [2022-11-18 20:07:19,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:21,165 INFO L130 PetriNetUnfolder]: 392/3240 cut-off events. [2022-11-18 20:07:21,165 INFO L131 PetriNetUnfolder]: For 1532/4922 co-relation queries the response was YES. [2022-11-18 20:07:21,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5975 conditions, 3240 events. 392/3240 cut-off events. For 1532/4922 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 31344 event pairs, 352 based on Foata normal form. 26/3010 useless extension candidates. Maximal degree in co-relation 5928. Up to 270 conditions per place. [2022-11-18 20:07:21,223 INFO L137 encePairwiseOnDemand]: 164/175 looper letters, 117 selfloop transitions, 25 changer transitions 0/276 dead transitions. [2022-11-18 20:07:21,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 276 transitions, 1310 flow [2022-11-18 20:07:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:07:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 20:07:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3325 transitions. [2022-11-18 20:07:21,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2022-11-18 20:07:21,233 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3325 transitions. [2022-11-18 20:07:21,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3325 transitions. [2022-11-18 20:07:21,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:21,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3325 transitions. [2022-11-18 20:07:21,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 138.54166666666666) internal successors, (3325), 24 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:21,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 175.0) internal successors, (4375), 25 states have internal predecessors, (4375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:21,254 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 175.0) internal successors, (4375), 25 states have internal predecessors, (4375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:21,255 INFO L175 Difference]: Start difference. First operand has 230 places, 186 transitions, 701 flow. Second operand 24 states and 3325 transitions. [2022-11-18 20:07:21,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 276 transitions, 1310 flow [2022-11-18 20:07:21,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 276 transitions, 1259 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-11-18 20:07:21,270 INFO L231 Difference]: Finished difference. Result has 237 places, 190 transitions, 725 flow [2022-11-18 20:07:21,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=725, PETRI_PLACES=237, PETRI_TRANSITIONS=190} [2022-11-18 20:07:21,272 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 87 predicate places. [2022-11-18 20:07:21,272 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 190 transitions, 725 flow [2022-11-18 20:07:21,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 136.61111111111111) internal successors, (2459), 18 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:21,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:21,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:21,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:21,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:21,480 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:21,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:21,481 INFO L85 PathProgramCache]: Analyzing trace with hash -72739627, now seen corresponding path program 1 times [2022-11-18 20:07:21,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:21,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458774063] [2022-11-18 20:07:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:21,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:21,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:21,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458774063] [2022-11-18 20:07:21,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458774063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:21,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723744545] [2022-11-18 20:07:21,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:21,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:21,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:21,696 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:21,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:07:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:21,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:07:21,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:07:21,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:21,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723744545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:21,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:07:21,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-18 20:07:21,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007680312] [2022-11-18 20:07:21,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:21,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:07:21,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:21,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:07:21,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:07:21,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 175 [2022-11-18 20:07:21,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 190 transitions, 725 flow. Second operand has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:21,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:21,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 175 [2022-11-18 20:07:21,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:23,364 INFO L130 PetriNetUnfolder]: 1376/4928 cut-off events. [2022-11-18 20:07:23,364 INFO L131 PetriNetUnfolder]: For 2223/7103 co-relation queries the response was YES. [2022-11-18 20:07:23,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9921 conditions, 4928 events. 1376/4928 cut-off events. For 2223/7103 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 53958 event pairs, 352 based on Foata normal form. 232/4400 useless extension candidates. Maximal degree in co-relation 9394. Up to 1041 conditions per place. [2022-11-18 20:07:23,456 INFO L137 encePairwiseOnDemand]: 167/175 looper letters, 44 selfloop transitions, 11 changer transitions 6/216 dead transitions. [2022-11-18 20:07:23,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 216 transitions, 953 flow [2022-11-18 20:07:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:07:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:07:23,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1016 transitions. [2022-11-18 20:07:23,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8293877551020408 [2022-11-18 20:07:23,460 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1016 transitions. [2022-11-18 20:07:23,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1016 transitions. [2022-11-18 20:07:23,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:23,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1016 transitions. [2022-11-18 20:07:23,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.14285714285714) internal successors, (1016), 7 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:23,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:23,465 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:23,466 INFO L175 Difference]: Start difference. First operand has 237 places, 190 transitions, 725 flow. Second operand 7 states and 1016 transitions. [2022-11-18 20:07:23,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 216 transitions, 953 flow [2022-11-18 20:07:23,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 216 transitions, 889 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-18 20:07:23,494 INFO L231 Difference]: Finished difference. Result has 224 places, 186 transitions, 672 flow [2022-11-18 20:07:23,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=672, PETRI_PLACES=224, PETRI_TRANSITIONS=186} [2022-11-18 20:07:23,496 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 74 predicate places. [2022-11-18 20:07:23,496 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 186 transitions, 672 flow [2022-11-18 20:07:23,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:23,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:23,497 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:23,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:23,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:07:23,703 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:23,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:23,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1969889894, now seen corresponding path program 1 times [2022-11-18 20:07:23,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:23,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895917045] [2022-11-18 20:07:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:23,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:07:23,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:23,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895917045] [2022-11-18 20:07:23,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895917045] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:23,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605685754] [2022-11-18 20:07:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:23,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:23,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:23,823 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:23,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:07:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:23,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:07:23,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:07:23,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:23,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605685754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:23,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:07:23,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:07:23,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102961809] [2022-11-18 20:07:23,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:23,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:07:23,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:23,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:07:23,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:07:23,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 175 [2022-11-18 20:07:23,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 186 transitions, 672 flow. Second operand has 6 states, 6 states have (on average 151.33333333333334) internal successors, (908), 6 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:23,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:23,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 175 [2022-11-18 20:07:23,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:24,539 INFO L130 PetriNetUnfolder]: 318/2370 cut-off events. [2022-11-18 20:07:24,539 INFO L131 PetriNetUnfolder]: For 793/812 co-relation queries the response was YES. [2022-11-18 20:07:24,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4792 conditions, 2370 events. 318/2370 cut-off events. For 793/812 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19540 event pairs, 38 based on Foata normal form. 30/2292 useless extension candidates. Maximal degree in co-relation 4715. Up to 236 conditions per place. [2022-11-18 20:07:24,580 INFO L137 encePairwiseOnDemand]: 170/175 looper letters, 32 selfloop transitions, 13 changer transitions 0/199 dead transitions. [2022-11-18 20:07:24,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 199 transitions, 798 flow [2022-11-18 20:07:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:07:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:07:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1077 transitions. [2022-11-18 20:07:24,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791836734693877 [2022-11-18 20:07:24,583 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1077 transitions. [2022-11-18 20:07:24,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1077 transitions. [2022-11-18 20:07:24,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:24,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1077 transitions. [2022-11-18 20:07:24,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 153.85714285714286) internal successors, (1077), 7 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:24,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:24,588 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:24,588 INFO L175 Difference]: Start difference. First operand has 224 places, 186 transitions, 672 flow. Second operand 7 states and 1077 transitions. [2022-11-18 20:07:24,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 199 transitions, 798 flow [2022-11-18 20:07:24,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 199 transitions, 774 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-18 20:07:24,599 INFO L231 Difference]: Finished difference. Result has 220 places, 184 transitions, 660 flow [2022-11-18 20:07:24,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=660, PETRI_PLACES=220, PETRI_TRANSITIONS=184} [2022-11-18 20:07:24,600 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 70 predicate places. [2022-11-18 20:07:24,600 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 184 transitions, 660 flow [2022-11-18 20:07:24,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.33333333333334) internal successors, (908), 6 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:24,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:24,601 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:24,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:24,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:07:24,808 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:24,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:24,808 INFO L85 PathProgramCache]: Analyzing trace with hash 289537292, now seen corresponding path program 2 times [2022-11-18 20:07:24,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:24,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640544499] [2022-11-18 20:07:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:24,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:25,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:25,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640544499] [2022-11-18 20:07:25,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640544499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:25,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229871081] [2022-11-18 20:07:25,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:07:25,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:25,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:25,175 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:25,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:07:25,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:07:25,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:25,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:07:25,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:07:25,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:07:25,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229871081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:25,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:25,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-18 20:07:25,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375490313] [2022-11-18 20:07:25,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:25,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:07:25,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:25,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:07:25,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:07:25,683 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 175 [2022-11-18 20:07:25,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 184 transitions, 660 flow. Second operand has 19 states, 19 states have (on average 128.21052631578948) internal successors, (2436), 19 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:25,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:25,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 175 [2022-11-18 20:07:25,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:27,542 INFO L130 PetriNetUnfolder]: 603/3160 cut-off events. [2022-11-18 20:07:27,542 INFO L131 PetriNetUnfolder]: For 1514/1514 co-relation queries the response was YES. [2022-11-18 20:07:27,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6786 conditions, 3160 events. 603/3160 cut-off events. For 1514/1514 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 26712 event pairs, 52 based on Foata normal form. 25/3072 useless extension candidates. Maximal degree in co-relation 6672. Up to 324 conditions per place. [2022-11-18 20:07:27,597 INFO L137 encePairwiseOnDemand]: 157/175 looper letters, 172 selfloop transitions, 48 changer transitions 0/330 dead transitions. [2022-11-18 20:07:27,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 330 transitions, 1605 flow [2022-11-18 20:07:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:07:27,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:07:27,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 5166 transitions. [2022-11-18 20:07:27,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.738 [2022-11-18 20:07:27,606 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 5166 transitions. [2022-11-18 20:07:27,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 5166 transitions. [2022-11-18 20:07:27,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:27,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 5166 transitions. [2022-11-18 20:07:27,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 129.15) internal successors, (5166), 40 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:27,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 175.0) internal successors, (7175), 41 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:27,628 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 175.0) internal successors, (7175), 41 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:27,629 INFO L175 Difference]: Start difference. First operand has 220 places, 184 transitions, 660 flow. Second operand 40 states and 5166 transitions. [2022-11-18 20:07:27,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 330 transitions, 1605 flow [2022-11-18 20:07:27,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 330 transitions, 1565 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-18 20:07:27,643 INFO L231 Difference]: Finished difference. Result has 255 places, 195 transitions, 812 flow [2022-11-18 20:07:27,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=812, PETRI_PLACES=255, PETRI_TRANSITIONS=195} [2022-11-18 20:07:27,644 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 105 predicate places. [2022-11-18 20:07:27,644 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 195 transitions, 812 flow [2022-11-18 20:07:27,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 128.21052631578948) internal successors, (2436), 19 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:27,646 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:27,646 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:27,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:27,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:07:27,851 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:07:27,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:27,852 INFO L85 PathProgramCache]: Analyzing trace with hash -390079351, now seen corresponding path program 2 times [2022-11-18 20:07:27,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:27,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264315079] [2022-11-18 20:07:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:27,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:28,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:28,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264315079] [2022-11-18 20:07:28,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264315079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:28,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121982669] [2022-11-18 20:07:28,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:07:28,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:28,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:28,086 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:28,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:07:28,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:07:28,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:28,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:07:28,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:07:28,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:07:28,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121982669] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:28,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:28,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-18 20:07:28,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163186917] [2022-11-18 20:07:28,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:28,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:07:28,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:28,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:07:28,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:07:28,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 175 [2022-11-18 20:07:28,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 195 transitions, 812 flow. Second operand has 16 states, 16 states have (on average 145.6875) internal successors, (2331), 16 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:28,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:28,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 175 [2022-11-18 20:07:28,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:30,678 INFO L130 PetriNetUnfolder]: 3530/9002 cut-off events. [2022-11-18 20:07:30,678 INFO L131 PetriNetUnfolder]: For 4348/4428 co-relation queries the response was YES. [2022-11-18 20:07:30,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18908 conditions, 9002 events. 3530/9002 cut-off events. For 4348/4428 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 95175 event pairs, 154 based on Foata normal form. 119/7555 useless extension candidates. Maximal degree in co-relation 18766. Up to 1836 conditions per place. [2022-11-18 20:07:30,733 INFO L137 encePairwiseOnDemand]: 166/175 looper letters, 0 selfloop transitions, 0 changer transitions 278/278 dead transitions. [2022-11-18 20:07:30,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 278 transitions, 1278 flow [2022-11-18 20:07:30,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:07:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 20:07:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3242 transitions. [2022-11-18 20:07:30,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8420779220779221 [2022-11-18 20:07:30,738 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3242 transitions. [2022-11-18 20:07:30,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3242 transitions. [2022-11-18 20:07:30,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:30,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3242 transitions. [2022-11-18 20:07:30,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 147.36363636363637) internal successors, (3242), 22 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:30,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 175.0) internal successors, (4025), 23 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:30,752 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 175.0) internal successors, (4025), 23 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:30,753 INFO L175 Difference]: Start difference. First operand has 255 places, 195 transitions, 812 flow. Second operand 22 states and 3242 transitions. [2022-11-18 20:07:30,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 278 transitions, 1278 flow [2022-11-18 20:07:30,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 278 transitions, 1207 flow, removed 5 selfloop flow, removed 25 redundant places. [2022-11-18 20:07:30,776 INFO L231 Difference]: Finished difference. Result has 250 places, 0 transitions, 0 flow [2022-11-18 20:07:30,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=250, PETRI_TRANSITIONS=0} [2022-11-18 20:07:30,776 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 100 predicate places. [2022-11-18 20:07:30,777 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 0 transitions, 0 flow [2022-11-18 20:07:30,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 145.6875) internal successors, (2331), 16 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:30,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-18 20:07:30,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 20:07:30,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 20:07:30,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 20:07:30,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 20:07:30,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 20:07:30,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 20:07:30,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 20:07:30,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-18 20:07:30,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-18 20:07:30,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-18 20:07:30,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 20:07:30,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 20:07:30,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 20:07:30,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 20:07:30,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 20:07:30,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 20:07:30,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:30,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:07:30,991 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:30,997 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:07:30,997 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:07:31,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:07:31 BasicIcfg [2022-11-18 20:07:31,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:07:31,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:07:31,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:07:31,003 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:07:31,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:07:04" (3/4) ... [2022-11-18 20:07:31,006 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:07:31,012 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 20:07:31,013 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 20:07:31,013 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-18 20:07:31,019 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-18 20:07:31,019 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:07:31,020 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:07:31,020 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:07:31,058 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:07:31,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:07:31,059 INFO L158 Benchmark]: Toolchain (without parser) took 27332.98ms. Allocated memory was 125.8MB in the beginning and 845.2MB in the end (delta: 719.3MB). Free memory was 89.4MB in the beginning and 575.1MB in the end (delta: -485.8MB). Peak memory consumption was 233.6MB. Max. memory is 16.1GB. [2022-11-18 20:07:31,059 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory was 105.7MB in the beginning and 105.7MB in the end (delta: 57.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:07:31,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.50ms. Allocated memory is still 125.8MB. Free memory was 89.1MB in the beginning and 99.5MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:07:31,060 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.31ms. Allocated memory is still 125.8MB. Free memory was 99.1MB in the beginning and 97.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:07:31,061 INFO L158 Benchmark]: Boogie Preprocessor took 31.25ms. Allocated memory is still 125.8MB. Free memory was 97.6MB in the beginning and 95.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:07:31,061 INFO L158 Benchmark]: RCFGBuilder took 589.43ms. Allocated memory is still 125.8MB. Free memory was 95.9MB in the beginning and 78.9MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 20:07:31,061 INFO L158 Benchmark]: TraceAbstraction took 26275.83ms. Allocated memory was 125.8MB in the beginning and 845.2MB in the end (delta: 719.3MB). Free memory was 78.5MB in the beginning and 578.3MB in the end (delta: -499.7MB). Peak memory consumption was 727.1MB. Max. memory is 16.1GB. [2022-11-18 20:07:31,062 INFO L158 Benchmark]: Witness Printer took 55.06ms. Allocated memory is still 845.2MB. Free memory was 578.3MB in the beginning and 575.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 20:07:31,065 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory was 105.7MB in the beginning and 105.7MB in the end (delta: 57.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.50ms. Allocated memory is still 125.8MB. Free memory was 89.1MB in the beginning and 99.5MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.31ms. Allocated memory is still 125.8MB. Free memory was 99.1MB in the beginning and 97.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.25ms. Allocated memory is still 125.8MB. Free memory was 97.6MB in the beginning and 95.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 589.43ms. Allocated memory is still 125.8MB. Free memory was 95.9MB in the beginning and 78.9MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 26275.83ms. Allocated memory was 125.8MB in the beginning and 845.2MB in the end (delta: 719.3MB). Free memory was 78.5MB in the beginning and 578.3MB in the end (delta: -499.7MB). Peak memory consumption was 727.1MB. Max. memory is 16.1GB. * Witness Printer took 55.06ms. Allocated memory is still 845.2MB. Free memory was 578.3MB in the beginning and 575.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 212 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.0s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2383 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2383 mSDsluCounter, 458 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 365 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2611 IncrementalHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 93 mSDtfsCounter, 2611 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1758 GetRequests, 1453 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1917 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=812occurred in iteration=15, InterpolantAutomatonStates: 218, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 2309 NumberOfCodeBlocks, 2201 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2824 ConstructedInterpolants, 0 QuantifiedInterpolants, 5886 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2049 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 351/699 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:07:31,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b0d8d-1317-42d9-a50f-51a0156672c5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE