./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:43:38,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:43:38,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:43:38,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:43:38,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:43:38,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:43:38,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:43:38,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:43:38,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:43:38,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:43:38,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:43:38,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:43:38,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:43:38,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:43:38,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:43:38,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:43:38,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:43:38,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:43:38,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:43:38,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:43:38,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:43:38,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:43:38,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:43:38,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:43:38,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:43:38,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:43:38,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:43:38,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:43:38,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:43:38,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:43:38,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:43:38,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:43:38,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:43:38,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:43:38,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:43:38,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:43:38,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:43:38,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:43:38,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:43:38,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:43:38,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:43:38,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 13:43:38,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:43:38,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:43:38,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:43:38,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:43:38,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:43:38,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:43:38,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:43:38,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:43:38,291 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:43:38,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:43:38,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:43:38,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:43:38,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:43:38,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:43:38,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:43:38,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:43:38,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:43:38,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:43:38,295 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 13:43:38,295 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:43:38,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:43:38,296 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:43:38,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:43:38,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:43:38,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:43:38,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:43:38,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:43:38,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:43:38,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:43:38,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:43:38,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:43:38,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:43:38,300 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:43:38,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:43:38,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:43:38,301 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_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f [2022-11-21 13:43:38,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:43:38,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:43:38,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:43:38,578 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:43:38,579 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:43:38,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-11-21 13:43:41,633 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:43:41,861 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:43:41,861 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-11-21 13:43:41,871 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/data/364d6e67d/dd5b0bde507440558725eef17a171e83/FLAG691a56b45 [2022-11-21 13:43:41,885 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/data/364d6e67d/dd5b0bde507440558725eef17a171e83 [2022-11-21 13:43:41,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:43:41,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:43:41,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:43:41,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:43:41,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:43:41,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:43:41" (1/1) ... [2022-11-21 13:43:41,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c21e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:41, skipping insertion in model container [2022-11-21 13:43:41,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:43:41" (1/1) ... [2022-11-21 13:43:41,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:43:41,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:43:42,097 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-11-21 13:43:42,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:43:42,115 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:43:42,139 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-11-21 13:43:42,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:43:42,164 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:43:42,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42 WrapperNode [2022-11-21 13:43:42,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:43:42,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:43:42,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:43:42,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:43:42,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42" (1/1) ... [2022-11-21 13:43:42,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42" (1/1) ... [2022-11-21 13:43:42,245 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 353 [2022-11-21 13:43:42,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:43:42,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:43:42,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:43:42,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:43:42,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42" (1/1) ... [2022-11-21 13:43:42,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42" (1/1) ... [2022-11-21 13:43:42,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42" (1/1) ... [2022-11-21 13:43:42,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42" (1/1) ... [2022-11-21 13:43:42,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42" (1/1) ... [2022-11-21 13:43:42,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42" (1/1) ... [2022-11-21 13:43:42,280 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42" (1/1) ... [2022-11-21 13:43:42,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42" (1/1) ... [2022-11-21 13:43:42,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:43:42,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:43:42,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:43:42,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:43:42,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42" (1/1) ... [2022-11-21 13:43:42,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:43:42,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:43:42,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:43:42,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:43:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:43:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:43:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:43:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:43:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 13:43:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 13:43:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 13:43:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 13:43:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 13:43:42,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 13:43:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:43:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 13:43:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:43:42,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:43:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:43:42,381 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:43:42,513 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:43:42,515 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:43:43,370 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:43:43,384 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:43:43,384 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-21 13:43:43,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:43:43 BoogieIcfgContainer [2022-11-21 13:43:43,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:43:43,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:43:43,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:43:43,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:43:43,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:43:41" (1/3) ... [2022-11-21 13:43:43,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69479e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:43:43, skipping insertion in model container [2022-11-21 13:43:43,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:42" (2/3) ... [2022-11-21 13:43:43,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69479e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:43:43, skipping insertion in model container [2022-11-21 13:43:43,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:43:43" (3/3) ... [2022-11-21 13:43:43,407 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2022-11-21 13:43:43,416 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 13:43:43,426 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:43:43,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-21 13:43:43,426 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:43:43,619 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 13:43:43,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 472 places, 501 transitions, 1026 flow [2022-11-21 13:43:43,909 INFO L130 PetriNetUnfolder]: 39/498 cut-off events. [2022-11-21 13:43:43,910 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 13:43:43,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 39/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1043 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 303. Up to 2 conditions per place. [2022-11-21 13:43:43,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 472 places, 501 transitions, 1026 flow [2022-11-21 13:43:43,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 445 places, 473 transitions, 964 flow [2022-11-21 13:43:43,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:43:43,974 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;@6d79d2d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:43:43,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-11-21 13:43:43,988 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-21 13:43:43,988 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:43:43,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:43,990 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] [2022-11-21 13:43:43,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-21 13:43:43,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:43,997 INFO L85 PathProgramCache]: Analyzing trace with hash -789370683, now seen corresponding path program 1 times [2022-11-21 13:43:44,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:44,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552156984] [2022-11-21 13:43:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:44,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:44,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:44,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552156984] [2022-11-21 13:43:44,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552156984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:44,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:44,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:43:44,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945411873] [2022-11-21 13:43:44,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:44,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:43:44,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:44,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:43:44,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:43:44,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-11-21 13:43:44,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 473 transitions, 964 flow. Second operand has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:44,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:44,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-11-21 13:43:44,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:44,944 INFO L130 PetriNetUnfolder]: 31/810 cut-off events. [2022-11-21 13:43:44,944 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-21 13:43:44,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 810 events. 31/810 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3102 event pairs, 0 based on Foata normal form. 44/720 useless extension candidates. Maximal degree in co-relation 550. Up to 45 conditions per place. [2022-11-21 13:43:44,962 INFO L137 encePairwiseOnDemand]: 459/501 looper letters, 60 selfloop transitions, 14 changer transitions 8/483 dead transitions. [2022-11-21 13:43:44,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 483 transitions, 1150 flow [2022-11-21 13:43:44,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:43:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:43:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2293 transitions. [2022-11-21 13:43:44,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153692614770459 [2022-11-21 13:43:44,985 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2293 transitions. [2022-11-21 13:43:44,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2293 transitions. [2022-11-21 13:43:44,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:44,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2293 transitions. [2022-11-21 13:43:45,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 458.6) internal successors, (2293), 5 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:45,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 501.0) internal successors, (3006), 6 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:45,017 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 501.0) internal successors, (3006), 6 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:45,019 INFO L175 Difference]: Start difference. First operand has 445 places, 473 transitions, 964 flow. Second operand 5 states and 2293 transitions. [2022-11-21 13:43:45,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 483 transitions, 1150 flow [2022-11-21 13:43:45,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 483 transitions, 1126 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 13:43:45,044 INFO L231 Difference]: Finished difference. Result has 446 places, 454 transitions, 996 flow [2022-11-21 13:43:45,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=996, PETRI_PLACES=446, PETRI_TRANSITIONS=454} [2022-11-21 13:43:45,053 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 1 predicate places. [2022-11-21 13:43:45,054 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 454 transitions, 996 flow [2022-11-21 13:43:45,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:45,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:45,056 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] [2022-11-21 13:43:45,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:43:45,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-21 13:43:45,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:45,057 INFO L85 PathProgramCache]: Analyzing trace with hash -955416257, now seen corresponding path program 1 times [2022-11-21 13:43:45,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:45,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879739543] [2022-11-21 13:43:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:45,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:45,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:45,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879739543] [2022-11-21 13:43:45,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879739543] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:43:45,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036763947] [2022-11-21 13:43:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:45,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:43:45,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:43:45,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:43:45,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:43:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:45,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:43:45,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:43:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:45,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:43:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:45,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036763947] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:43:45,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:43:45,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 13:43:45,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058248144] [2022-11-21 13:43:45,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:43:45,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:43:45,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:45,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:43:45,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:43:45,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-11-21 13:43:45,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 454 transitions, 996 flow. Second operand has 12 states, 12 states have (on average 437.6666666666667) internal successors, (5252), 12 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:45,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:45,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-11-21 13:43:45,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:46,842 INFO L130 PetriNetUnfolder]: 76/1877 cut-off events. [2022-11-21 13:43:46,843 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-11-21 13:43:46,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 1877 events. 76/1877 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11423 event pairs, 0 based on Foata normal form. 9/1591 useless extension candidates. Maximal degree in co-relation 1368. Up to 36 conditions per place. [2022-11-21 13:43:46,883 INFO L137 encePairwiseOnDemand]: 478/501 looper letters, 114 selfloop transitions, 62 changer transitions 0/577 dead transitions. [2022-11-21 13:43:46,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 577 transitions, 1696 flow [2022-11-21 13:43:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 13:43:46,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 13:43:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 8015 transitions. [2022-11-21 13:43:46,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8887779995564427 [2022-11-21 13:43:46,901 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 8015 transitions. [2022-11-21 13:43:46,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 8015 transitions. [2022-11-21 13:43:46,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:46,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 8015 transitions. [2022-11-21 13:43:46,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 445.27777777777777) internal successors, (8015), 18 states have internal predecessors, (8015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:47,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 501.0) internal successors, (9519), 19 states have internal predecessors, (9519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:47,008 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 501.0) internal successors, (9519), 19 states have internal predecessors, (9519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:47,009 INFO L175 Difference]: Start difference. First operand has 446 places, 454 transitions, 996 flow. Second operand 18 states and 8015 transitions. [2022-11-21 13:43:47,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 577 transitions, 1696 flow [2022-11-21 13:43:47,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 577 transitions, 1688 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 13:43:47,021 INFO L231 Difference]: Finished difference. Result has 458 places, 496 transitions, 1358 flow [2022-11-21 13:43:47,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1358, PETRI_PLACES=458, PETRI_TRANSITIONS=496} [2022-11-21 13:43:47,022 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 13 predicate places. [2022-11-21 13:43:47,023 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 496 transitions, 1358 flow [2022-11-21 13:43:47,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 437.6666666666667) internal successors, (5252), 12 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:47,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:47,026 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] [2022-11-21 13:43:47,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:43:47,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:43:47,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-21 13:43:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash 446868092, now seen corresponding path program 1 times [2022-11-21 13:43:47,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:47,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61772499] [2022-11-21 13:43:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:47,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:47,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61772499] [2022-11-21 13:43:47,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61772499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:43:47,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190123691] [2022-11-21 13:43:47,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:47,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:43:47,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:43:47,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:43:47,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:43:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:47,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:43:47,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:43:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:47,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:43:47,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190123691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:47,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:43:47,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 13:43:47,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523667701] [2022-11-21 13:43:47,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:47,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:43:47,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:47,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:43:47,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:43:47,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-11-21 13:43:47,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 496 transitions, 1358 flow. Second operand has 6 states, 6 states have (on average 437.3333333333333) internal successors, (2624), 6 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:47,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:47,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-11-21 13:43:47,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:48,357 INFO L130 PetriNetUnfolder]: 76/1865 cut-off events. [2022-11-21 13:43:48,358 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-11-21 13:43:48,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 1865 events. 76/1865 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11344 event pairs, 0 based on Foata normal form. 12/1582 useless extension candidates. Maximal degree in co-relation 1722. Up to 72 conditions per place. [2022-11-21 13:43:48,393 INFO L137 encePairwiseOnDemand]: 484/501 looper letters, 61 selfloop transitions, 43 changer transitions 0/505 dead transitions. [2022-11-21 13:43:48,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 505 transitions, 1539 flow [2022-11-21 13:43:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:43:48,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 13:43:48,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3119 transitions. [2022-11-21 13:43:48,402 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.889364128885087 [2022-11-21 13:43:48,402 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3119 transitions. [2022-11-21 13:43:48,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3119 transitions. [2022-11-21 13:43:48,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:48,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3119 transitions. [2022-11-21 13:43:48,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 445.57142857142856) internal successors, (3119), 7 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:48,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 501.0) internal successors, (4008), 8 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:48,423 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 501.0) internal successors, (4008), 8 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:48,423 INFO L175 Difference]: Start difference. First operand has 458 places, 496 transitions, 1358 flow. Second operand 7 states and 3119 transitions. [2022-11-21 13:43:48,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 505 transitions, 1539 flow [2022-11-21 13:43:48,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 505 transitions, 1423 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-21 13:43:48,440 INFO L231 Difference]: Finished difference. Result has 452 places, 484 transitions, 1247 flow [2022-11-21 13:43:48,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1247, PETRI_PLACES=452, PETRI_TRANSITIONS=484} [2022-11-21 13:43:48,442 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 7 predicate places. [2022-11-21 13:43:48,442 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 484 transitions, 1247 flow [2022-11-21 13:43:48,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 437.3333333333333) internal successors, (2624), 6 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:48,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:48,444 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] [2022-11-21 13:43:48,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 13:43:48,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:43:48,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-21 13:43:48,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:48,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1481190213, now seen corresponding path program 2 times [2022-11-21 13:43:48,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:48,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642811349] [2022-11-21 13:43:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:48,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:49,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:49,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642811349] [2022-11-21 13:43:49,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642811349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:43:49,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664377117] [2022-11-21 13:43:49,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:43:49,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:43:49,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:43:49,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:43:49,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:43:49,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:43:49,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:43:49,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:43:49,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:43:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 13:43:49,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:43:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 13:43:49,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664377117] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:43:49,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:43:49,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 13:43:49,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287022897] [2022-11-21 13:43:49,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:43:49,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 13:43:49,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:49,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 13:43:49,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:43:49,568 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 501 [2022-11-21 13:43:49,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 484 transitions, 1247 flow. Second operand has 18 states, 18 states have (on average 412.6111111111111) internal successors, (7427), 18 states have internal predecessors, (7427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:49,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:49,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 501 [2022-11-21 13:43:49,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:53,064 INFO L130 PetriNetUnfolder]: 1086/11053 cut-off events. [2022-11-21 13:43:53,064 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2022-11-21 13:43:53,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12610 conditions, 11053 events. 1086/11053 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 124463 event pairs, 392 based on Foata normal form. 6/8588 useless extension candidates. Maximal degree in co-relation 10285. Up to 189 conditions per place. [2022-11-21 13:43:53,272 INFO L137 encePairwiseOnDemand]: 474/501 looper letters, 203 selfloop transitions, 81 changer transitions 0/659 dead transitions. [2022-11-21 13:43:53,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 659 transitions, 2268 flow [2022-11-21 13:43:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 13:43:53,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 13:43:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10106 transitions. [2022-11-21 13:43:53,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8404856952761144 [2022-11-21 13:43:53,293 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10106 transitions. [2022-11-21 13:43:53,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10106 transitions. [2022-11-21 13:43:53,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:53,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10106 transitions. [2022-11-21 13:43:53,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 421.0833333333333) internal successors, (10106), 24 states have internal predecessors, (10106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:53,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:53,344 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:53,344 INFO L175 Difference]: Start difference. First operand has 452 places, 484 transitions, 1247 flow. Second operand 24 states and 10106 transitions. [2022-11-21 13:43:53,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 659 transitions, 2268 flow [2022-11-21 13:43:53,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 659 transitions, 2177 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-21 13:43:53,357 INFO L231 Difference]: Finished difference. Result has 464 places, 500 transitions, 1410 flow [2022-11-21 13:43:53,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1410, PETRI_PLACES=464, PETRI_TRANSITIONS=500} [2022-11-21 13:43:53,359 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 19 predicate places. [2022-11-21 13:43:53,359 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 500 transitions, 1410 flow [2022-11-21 13:43:53,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 412.6111111111111) internal successors, (7427), 18 states have internal predecessors, (7427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:53,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:53,362 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:43:53,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-21 13:43:53,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:43:53,568 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-21 13:43:53,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:53,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1744759366, now seen corresponding path program 1 times [2022-11-21 13:43:53,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:53,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298584177] [2022-11-21 13:43:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:53,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:53,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:53,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298584177] [2022-11-21 13:43:53,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298584177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:53,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:53,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:43:53,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046174287] [2022-11-21 13:43:53,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:53,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:43:53,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:43:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:43:53,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 501 [2022-11-21 13:43:53,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 500 transitions, 1410 flow. Second operand has 7 states, 7 states have (on average 427.2857142857143) internal successors, (2991), 7 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:53,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:53,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 501 [2022-11-21 13:43:53,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:59,055 INFO L130 PetriNetUnfolder]: 2207/20708 cut-off events. [2022-11-21 13:43:59,055 INFO L131 PetriNetUnfolder]: For 628/718 co-relation queries the response was YES. [2022-11-21 13:43:59,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24065 conditions, 20708 events. 2207/20708 cut-off events. For 628/718 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 257220 event pairs, 912 based on Foata normal form. 0/16251 useless extension candidates. Maximal degree in co-relation 2664. Up to 1788 conditions per place. [2022-11-21 13:43:59,333 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 158 selfloop transitions, 43 changer transitions 0/602 dead transitions. [2022-11-21 13:43:59,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 602 transitions, 2210 flow [2022-11-21 13:43:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:43:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 13:43:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4796 transitions. [2022-11-21 13:43:59,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8702594810379242 [2022-11-21 13:43:59,346 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4796 transitions. [2022-11-21 13:43:59,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4796 transitions. [2022-11-21 13:43:59,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:59,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4796 transitions. [2022-11-21 13:43:59,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 436.0) internal successors, (4796), 11 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:59,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:59,376 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:59,376 INFO L175 Difference]: Start difference. First operand has 464 places, 500 transitions, 1410 flow. Second operand 11 states and 4796 transitions. [2022-11-21 13:43:59,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 602 transitions, 2210 flow [2022-11-21 13:43:59,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 602 transitions, 2030 flow, removed 19 selfloop flow, removed 15 redundant places. [2022-11-21 13:43:59,392 INFO L231 Difference]: Finished difference. Result has 462 places, 517 transitions, 1467 flow [2022-11-21 13:43:59,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1467, PETRI_PLACES=462, PETRI_TRANSITIONS=517} [2022-11-21 13:43:59,393 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 17 predicate places. [2022-11-21 13:43:59,394 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 517 transitions, 1467 flow [2022-11-21 13:43:59,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 427.2857142857143) internal successors, (2991), 7 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:59,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:59,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:43:59,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:43:59,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-21 13:43:59,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:59,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1203227791, now seen corresponding path program 1 times [2022-11-21 13:43:59,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:59,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449385129] [2022-11-21 13:43:59,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:59,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:59,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:59,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449385129] [2022-11-21 13:43:59,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449385129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:59,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:59,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:43:59,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494901493] [2022-11-21 13:43:59,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:59,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:43:59,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:59,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:43:59,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:43:59,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 501 [2022-11-21 13:43:59,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 517 transitions, 1467 flow. Second operand has 7 states, 7 states have (on average 427.42857142857144) internal successors, (2992), 7 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:59,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:59,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 501 [2022-11-21 13:43:59,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:44:02,787 INFO L130 PetriNetUnfolder]: 1944/13030 cut-off events. [2022-11-21 13:44:02,788 INFO L131 PetriNetUnfolder]: For 1772/1856 co-relation queries the response was YES. [2022-11-21 13:44:02,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16937 conditions, 13030 events. 1944/13030 cut-off events. For 1772/1856 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 143861 event pairs, 921 based on Foata normal form. 84/10466 useless extension candidates. Maximal degree in co-relation 10919. Up to 1980 conditions per place. [2022-11-21 13:44:02,941 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 154 selfloop transitions, 43 changer transitions 0/600 dead transitions. [2022-11-21 13:44:02,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 600 transitions, 2135 flow [2022-11-21 13:44:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:44:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 13:44:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4792 transitions. [2022-11-21 13:44:02,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8695336599528216 [2022-11-21 13:44:02,952 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4792 transitions. [2022-11-21 13:44:02,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4792 transitions. [2022-11-21 13:44:02,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:44:02,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4792 transitions. [2022-11-21 13:44:02,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 435.6363636363636) internal successors, (4792), 11 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:02,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:02,977 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:02,978 INFO L175 Difference]: Start difference. First operand has 462 places, 517 transitions, 1467 flow. Second operand 11 states and 4792 transitions. [2022-11-21 13:44:02,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 600 transitions, 2135 flow [2022-11-21 13:44:02,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 600 transitions, 2130 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 13:44:02,994 INFO L231 Difference]: Finished difference. Result has 472 places, 519 transitions, 1560 flow [2022-11-21 13:44:02,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1560, PETRI_PLACES=472, PETRI_TRANSITIONS=519} [2022-11-21 13:44:02,996 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 27 predicate places. [2022-11-21 13:44:02,996 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 519 transitions, 1560 flow [2022-11-21 13:44:02,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 427.42857142857144) internal successors, (2992), 7 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:02,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:44:02,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:44:02,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:44:02,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-21 13:44:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:44:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1859295929, now seen corresponding path program 1 times [2022-11-21 13:44:02,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:44:02,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342333210] [2022-11-21 13:44:03,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:44:03,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:44:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:44:03,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:44:03,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342333210] [2022-11-21 13:44:03,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342333210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:44:03,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:44:03,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:44:03,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023872473] [2022-11-21 13:44:03,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:44:03,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:44:03,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:44:03,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:44:03,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:44:03,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 501 [2022-11-21 13:44:03,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 519 transitions, 1560 flow. Second operand has 7 states, 7 states have (on average 424.7142857142857) internal successors, (2973), 7 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:03,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:44:03,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 501 [2022-11-21 13:44:03,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:44:06,746 INFO L130 PetriNetUnfolder]: 2700/16604 cut-off events. [2022-11-21 13:44:06,746 INFO L131 PetriNetUnfolder]: For 3635/3761 co-relation queries the response was YES. [2022-11-21 13:44:06,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22361 conditions, 16604 events. 2700/16604 cut-off events. For 3635/3761 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 182412 event pairs, 1144 based on Foata normal form. 126/13497 useless extension candidates. Maximal degree in co-relation 15086. Up to 2934 conditions per place. [2022-11-21 13:44:07,079 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 153 selfloop transitions, 43 changer transitions 0/598 dead transitions. [2022-11-21 13:44:07,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 598 transitions, 2218 flow [2022-11-21 13:44:07,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:44:07,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 13:44:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4758 transitions. [2022-11-21 13:44:07,090 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8633641807294502 [2022-11-21 13:44:07,090 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4758 transitions. [2022-11-21 13:44:07,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4758 transitions. [2022-11-21 13:44:07,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:44:07,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4758 transitions. [2022-11-21 13:44:07,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 432.54545454545456) internal successors, (4758), 11 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:07,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:07,117 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:07,118 INFO L175 Difference]: Start difference. First operand has 472 places, 519 transitions, 1560 flow. Second operand 11 states and 4758 transitions. [2022-11-21 13:44:07,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 598 transitions, 2218 flow [2022-11-21 13:44:07,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 598 transitions, 2178 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 13:44:07,141 INFO L231 Difference]: Finished difference. Result has 479 places, 521 transitions, 1618 flow [2022-11-21 13:44:07,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1618, PETRI_PLACES=479, PETRI_TRANSITIONS=521} [2022-11-21 13:44:07,144 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 34 predicate places. [2022-11-21 13:44:07,144 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 521 transitions, 1618 flow [2022-11-21 13:44:07,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 424.7142857142857) internal successors, (2973), 7 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:07,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:44:07,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:44:07,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:44:07,146 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-21 13:44:07,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:44:07,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1842500036, now seen corresponding path program 1 times [2022-11-21 13:44:07,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:44:07,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767605507] [2022-11-21 13:44:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:44:07,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:44:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:44:08,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:44:08,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767605507] [2022-11-21 13:44:08,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767605507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:44:08,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888273847] [2022-11-21 13:44:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:44:08,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:44:08,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:44:08,971 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:44:08,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef1a76f-68e9-4b3b-bd24-f0cdbe4f6d89/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:44:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:09,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-21 13:44:09,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:44:09,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 13:44:09,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 13:44:10,420 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 13:44:10,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 13:44:10,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 13:44:10,842 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 13:44:10,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 13:44:11,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 13:44:11,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:44:11,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 13:44:11,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-21 13:44:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:44:11,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:44:11,529 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_189 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_189) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-21 13:44:13,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 13:44:13,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-11-21 13:44:13,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 13:44:13,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 136 [2022-11-21 13:44:13,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2022-11-21 13:44:13,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2022-11-21 13:44:14,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-21 13:44:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-21 13:44:14,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888273847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:44:14,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:44:14,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 26] total 69 [2022-11-21 13:44:14,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13101812] [2022-11-21 13:44:14,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:44:14,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-21 13:44:14,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:44:14,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-21 13:44:14,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=4347, Unknown=21, NotChecked=134, Total=4830 [2022-11-21 13:44:14,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 501 [2022-11-21 13:44:14,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 521 transitions, 1618 flow. Second operand has 70 states, 70 states have (on average 317.9) internal successors, (22253), 70 states have internal predecessors, (22253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:14,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:44:14,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 501 [2022-11-21 13:44:14,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand