./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:56:36,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:56:36,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:56:36,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:56:36,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:56:36,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:56:36,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:56:36,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:56:36,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:56:36,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:56:36,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:56:36,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:56:36,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:56:36,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:56:36,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:56:36,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:56:36,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:56:36,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:56:36,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:56:36,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:56:36,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:56:36,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:56:36,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:56:36,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:56:36,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:56:36,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:56:36,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:56:36,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:56:36,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:56:36,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:56:36,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:56:36,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:56:36,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:56:36,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:56:36,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:56:36,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:56:36,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:56:36,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:56:36,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:56:36,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:56:36,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:56:36,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:56:36,379 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:56:36,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:56:36,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:56:36,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:56:36,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:56:36,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:56:36,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:56:36,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:56:36,385 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:56:36,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:56:36,387 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:56:36,387 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:56:36,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:56:36,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:56:36,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:56:36,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:56:36,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:56:36,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:56:36,389 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:56:36,390 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:56:36,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:56:36,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:56:36,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:56:36,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:56:36,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:56:36,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:56:36,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:56:36,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:56:36,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:56:36,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:56:36,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:56:36,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:56:36,395 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:56:36,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:56:36,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:56:36,396 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_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e [2022-11-18 20:56:36,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:56:36,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:56:36,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:56:36,828 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:56:36,829 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:56:36,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-11-18 20:56:36,931 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/data/94958ccd3/c6014f36f0f3411ab19acf2ef8e2da45/FLAGab2546c66 [2022-11-18 20:56:37,506 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:56:37,507 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-11-18 20:56:37,523 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/data/94958ccd3/c6014f36f0f3411ab19acf2ef8e2da45/FLAGab2546c66 [2022-11-18 20:56:37,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/data/94958ccd3/c6014f36f0f3411ab19acf2ef8e2da45 [2022-11-18 20:56:37,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:56:37,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:56:37,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:56:37,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:56:37,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:56:37,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:56:37" (1/1) ... [2022-11-18 20:56:37,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@647c1378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:37, skipping insertion in model container [2022-11-18 20:56:37,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:56:37" (1/1) ... [2022-11-18 20:56:37,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:56:37,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:56:38,267 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-11-18 20:56:38,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:56:38,289 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:56:38,326 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-11-18 20:56:38,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:56:38,358 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:56:38,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38 WrapperNode [2022-11-18 20:56:38,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:56:38,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:56:38,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:56:38,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:56:38,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38" (1/1) ... [2022-11-18 20:56:38,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38" (1/1) ... [2022-11-18 20:56:38,426 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 131 [2022-11-18 20:56:38,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:56:38,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:56:38,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:56:38,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:56:38,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38" (1/1) ... [2022-11-18 20:56:38,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38" (1/1) ... [2022-11-18 20:56:38,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38" (1/1) ... [2022-11-18 20:56:38,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38" (1/1) ... [2022-11-18 20:56:38,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38" (1/1) ... [2022-11-18 20:56:38,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38" (1/1) ... [2022-11-18 20:56:38,471 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38" (1/1) ... [2022-11-18 20:56:38,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38" (1/1) ... [2022-11-18 20:56:38,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:56:38,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:56:38,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:56:38,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:56:38,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38" (1/1) ... [2022-11-18 20:56:38,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:56:38,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:38,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:38,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:56:38,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:56:38,569 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:56:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:56:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:56:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:56:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:56:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:56:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:56:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:56:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:56:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:56:38,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:56:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:56:38,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:56:38,573 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:56:38,743 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:56:38,745 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:56:39,081 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:56:39,248 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:56:39,248 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:56:39,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:39 BoogieIcfgContainer [2022-11-18 20:56:39,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:56:39,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:56:39,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:56:39,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:56:39,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:56:37" (1/3) ... [2022-11-18 20:56:39,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2490375a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:56:39, skipping insertion in model container [2022-11-18 20:56:39,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:38" (2/3) ... [2022-11-18 20:56:39,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2490375a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:56:39, skipping insertion in model container [2022-11-18 20:56:39,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:39" (3/3) ... [2022-11-18 20:56:39,267 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2022-11-18 20:56:39,287 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:56:39,301 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:56:39,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 20:56:39,302 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:56:39,413 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:56:39,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 90 transitions, 196 flow [2022-11-18 20:56:39,520 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2022-11-18 20:56:39,521 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:56:39,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 1/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2022-11-18 20:56:39,525 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 90 transitions, 196 flow [2022-11-18 20:56:39,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 69 transitions, 147 flow [2022-11-18 20:56:39,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:56:39,549 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;@41852e8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:56:39,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-18 20:56:39,562 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-11-18 20:56:39,562 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:56:39,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:39,563 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] [2022-11-18 20:56:39,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:56:39,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:39,569 INFO L85 PathProgramCache]: Analyzing trace with hash -687716498, now seen corresponding path program 1 times [2022-11-18 20:56:39,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:39,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386678336] [2022-11-18 20:56:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:39,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:39,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:39,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:39,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386678336] [2022-11-18 20:56:39,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386678336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:39,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:39,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:56:39,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057515723] [2022-11-18 20:56:39,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:39,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:56:39,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:40,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:56:40,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:56:40,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 90 [2022-11-18 20:56:40,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:40,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:40,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 90 [2022-11-18 20:56:40,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:40,441 INFO L130 PetriNetUnfolder]: 94/371 cut-off events. [2022-11-18 20:56:40,441 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-18 20:56:40,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 371 events. 94/371 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2021 event pairs, 20 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 539. Up to 82 conditions per place. [2022-11-18 20:56:40,451 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 38 selfloop transitions, 6 changer transitions 2/95 dead transitions. [2022-11-18 20:56:40,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 95 transitions, 300 flow [2022-11-18 20:56:40,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:56:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:56:40,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2022-11-18 20:56:40,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8555555555555555 [2022-11-18 20:56:40,487 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2022-11-18 20:56:40,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2022-11-18 20:56:40,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:40,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2022-11-18 20:56:40,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:40,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:40,520 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:40,524 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 147 flow. Second operand 5 states and 385 transitions. [2022-11-18 20:56:40,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 95 transitions, 300 flow [2022-11-18 20:56:40,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 95 transitions, 289 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:56:40,546 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 174 flow [2022-11-18 20:56:40,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2022-11-18 20:56:40,556 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2022-11-18 20:56:40,556 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 174 flow [2022-11-18 20:56:40,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:40,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:40,558 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] [2022-11-18 20:56:40,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:56:40,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:56:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash 827328041, now seen corresponding path program 1 times [2022-11-18 20:56:40,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:40,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365272427] [2022-11-18 20:56:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:40,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:40,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:40,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365272427] [2022-11-18 20:56:40,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365272427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:40,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:40,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:56:40,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355179055] [2022-11-18 20:56:40,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:40,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:56:40,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:40,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:56:40,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:56:40,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 90 [2022-11-18 20:56:40,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:40,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:40,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 90 [2022-11-18 20:56:40,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:41,024 INFO L130 PetriNetUnfolder]: 82/381 cut-off events. [2022-11-18 20:56:41,024 INFO L131 PetriNetUnfolder]: For 69/82 co-relation queries the response was YES. [2022-11-18 20:56:41,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 381 events. 82/381 cut-off events. For 69/82 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2148 event pairs, 51 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 581. Up to 119 conditions per place. [2022-11-18 20:56:41,034 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 27 selfloop transitions, 5 changer transitions 4/87 dead transitions. [2022-11-18 20:56:41,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 289 flow [2022-11-18 20:56:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:56:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:56:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2022-11-18 20:56:41,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-11-18 20:56:41,037 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2022-11-18 20:56:41,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2022-11-18 20:56:41,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:41,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2022-11-18 20:56:41,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,042 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,043 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 174 flow. Second operand 4 states and 304 transitions. [2022-11-18 20:56:41,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 289 flow [2022-11-18 20:56:41,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 87 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:56:41,047 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 198 flow [2022-11-18 20:56:41,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2022-11-18 20:56:41,049 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2022-11-18 20:56:41,049 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 198 flow [2022-11-18 20:56:41,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:41,050 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] [2022-11-18 20:56:41,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:56:41,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:56:41,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:41,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2070315267, now seen corresponding path program 1 times [2022-11-18 20:56:41,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:41,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894448367] [2022-11-18 20:56:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:41,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:41,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:41,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894448367] [2022-11-18 20:56:41,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894448367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:41,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:41,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:56:41,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725920827] [2022-11-18 20:56:41,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:41,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:56:41,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:41,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:56:41,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:56:41,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 90 [2022-11-18 20:56:41,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:41,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 90 [2022-11-18 20:56:41,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:41,426 INFO L130 PetriNetUnfolder]: 95/410 cut-off events. [2022-11-18 20:56:41,427 INFO L131 PetriNetUnfolder]: For 128/145 co-relation queries the response was YES. [2022-11-18 20:56:41,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 410 events. 95/410 cut-off events. For 128/145 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2452 event pairs, 19 based on Foata normal form. 7/407 useless extension candidates. Maximal degree in co-relation 414. Up to 96 conditions per place. [2022-11-18 20:56:41,431 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 38 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2022-11-18 20:56:41,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 362 flow [2022-11-18 20:56:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:56:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:56:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 383 transitions. [2022-11-18 20:56:41,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8511111111111112 [2022-11-18 20:56:41,435 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 383 transitions. [2022-11-18 20:56:41,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 383 transitions. [2022-11-18 20:56:41,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:41,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 383 transitions. [2022-11-18 20:56:41,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,442 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 198 flow. Second operand 5 states and 383 transitions. [2022-11-18 20:56:41,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 362 flow [2022-11-18 20:56:41,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:56:41,451 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 228 flow [2022-11-18 20:56:41,452 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2022-11-18 20:56:41,455 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 11 predicate places. [2022-11-18 20:56:41,455 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 228 flow [2022-11-18 20:56:41,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:41,456 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] [2022-11-18 20:56:41,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:56:41,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:56:41,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1540619602, now seen corresponding path program 1 times [2022-11-18 20:56:41,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:41,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832386105] [2022-11-18 20:56:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:41,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:41,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:41,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832386105] [2022-11-18 20:56:41,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832386105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:41,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:41,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:56:41,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138850825] [2022-11-18 20:56:41,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:41,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:56:41,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:41,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:56:41,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:56:41,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2022-11-18 20:56:41,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:41,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2022-11-18 20:56:41,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:41,956 INFO L130 PetriNetUnfolder]: 113/451 cut-off events. [2022-11-18 20:56:41,956 INFO L131 PetriNetUnfolder]: For 220/230 co-relation queries the response was YES. [2022-11-18 20:56:41,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 451 events. 113/451 cut-off events. For 220/230 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2741 event pairs, 23 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 916. Up to 117 conditions per place. [2022-11-18 20:56:41,961 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 46 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2022-11-18 20:56:41,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 103 transitions, 459 flow [2022-11-18 20:56:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:56:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:56:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 738 transitions. [2022-11-18 20:56:41,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2022-11-18 20:56:41,966 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 738 transitions. [2022-11-18 20:56:41,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 738 transitions. [2022-11-18 20:56:41,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:41,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 738 transitions. [2022-11-18 20:56:41,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 67.0909090909091) internal successors, (738), 11 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,976 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,976 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 228 flow. Second operand 11 states and 738 transitions. [2022-11-18 20:56:41,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 103 transitions, 459 flow [2022-11-18 20:56:41,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 103 transitions, 447 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:56:41,987 INFO L231 Difference]: Finished difference. Result has 97 places, 77 transitions, 273 flow [2022-11-18 20:56:41,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=273, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2022-11-18 20:56:41,994 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2022-11-18 20:56:41,995 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 273 flow [2022-11-18 20:56:41,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:41,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:41,996 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] [2022-11-18 20:56:41,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:56:41,998 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:56:42,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:42,001 INFO L85 PathProgramCache]: Analyzing trace with hash -268577005, now seen corresponding path program 1 times [2022-11-18 20:56:42,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:42,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714743640] [2022-11-18 20:56:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:42,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:42,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:42,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714743640] [2022-11-18 20:56:42,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714743640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:42,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:42,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:56:42,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944140352] [2022-11-18 20:56:42,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:42,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:56:42,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:42,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:56:42,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:56:42,187 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2022-11-18 20:56:42,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:42,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:42,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2022-11-18 20:56:42,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:42,538 INFO L130 PetriNetUnfolder]: 108/439 cut-off events. [2022-11-18 20:56:42,539 INFO L131 PetriNetUnfolder]: For 366/375 co-relation queries the response was YES. [2022-11-18 20:56:42,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 439 events. 108/439 cut-off events. For 366/375 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2608 event pairs, 6 based on Foata normal form. 6/435 useless extension candidates. Maximal degree in co-relation 955. Up to 79 conditions per place. [2022-11-18 20:56:42,544 INFO L137 encePairwiseOnDemand]: 81/90 looper letters, 61 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2022-11-18 20:56:42,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 125 transitions, 625 flow [2022-11-18 20:56:42,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:56:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:56:42,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 763 transitions. [2022-11-18 20:56:42,549 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7707070707070707 [2022-11-18 20:56:42,549 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 763 transitions. [2022-11-18 20:56:42,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 763 transitions. [2022-11-18 20:56:42,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:42,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 763 transitions. [2022-11-18 20:56:42,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:42,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:42,557 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:42,557 INFO L175 Difference]: Start difference. First operand has 97 places, 77 transitions, 273 flow. Second operand 11 states and 763 transitions. [2022-11-18 20:56:42,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 125 transitions, 625 flow [2022-11-18 20:56:42,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 125 transitions, 590 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 20:56:42,567 INFO L231 Difference]: Finished difference. Result has 98 places, 84 transitions, 324 flow [2022-11-18 20:56:42,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=324, PETRI_PLACES=98, PETRI_TRANSITIONS=84} [2022-11-18 20:56:42,570 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2022-11-18 20:56:42,571 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 84 transitions, 324 flow [2022-11-18 20:56:42,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:42,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:42,572 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] [2022-11-18 20:56:42,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:56:42,573 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:56:42,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:42,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1031416940, now seen corresponding path program 1 times [2022-11-18 20:56:42,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:42,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47617465] [2022-11-18 20:56:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:42,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:42,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:42,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47617465] [2022-11-18 20:56:42,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47617465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:42,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:42,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:56:42,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961039902] [2022-11-18 20:56:42,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:42,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:56:42,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:42,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:56:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:56:42,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2022-11-18 20:56:42,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 84 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:42,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:42,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2022-11-18 20:56:42,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:42,975 INFO L130 PetriNetUnfolder]: 103/428 cut-off events. [2022-11-18 20:56:42,975 INFO L131 PetriNetUnfolder]: For 381/390 co-relation queries the response was YES. [2022-11-18 20:56:42,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 428 events. 103/428 cut-off events. For 381/390 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2539 event pairs, 42 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 933. Up to 110 conditions per place. [2022-11-18 20:56:42,980 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 43 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2022-11-18 20:56:42,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 510 flow [2022-11-18 20:56:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:56:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:56:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 673 transitions. [2022-11-18 20:56:42,983 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7477777777777778 [2022-11-18 20:56:42,984 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 673 transitions. [2022-11-18 20:56:42,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 673 transitions. [2022-11-18 20:56:42,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:42,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 673 transitions. [2022-11-18 20:56:42,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 67.3) internal successors, (673), 10 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:42,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:42,990 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:42,991 INFO L175 Difference]: Start difference. First operand has 98 places, 84 transitions, 324 flow. Second operand 10 states and 673 transitions. [2022-11-18 20:56:42,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 510 flow [2022-11-18 20:56:42,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 105 transitions, 461 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-11-18 20:56:42,997 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 303 flow [2022-11-18 20:56:42,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=303, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2022-11-18 20:56:42,998 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2022-11-18 20:56:42,999 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 303 flow [2022-11-18 20:56:42,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:42,999 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:43,000 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] [2022-11-18 20:56:43,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:56:43,000 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:56:43,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1031416939, now seen corresponding path program 1 times [2022-11-18 20:56:43,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:43,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877218581] [2022-11-18 20:56:43,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:43,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:43,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:43,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877218581] [2022-11-18 20:56:43,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877218581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:43,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:43,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:56:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732963699] [2022-11-18 20:56:43,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:43,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:56:43,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:56:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:56:43,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2022-11-18 20:56:43,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:43,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2022-11-18 20:56:43,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:43,432 INFO L130 PetriNetUnfolder]: 98/416 cut-off events. [2022-11-18 20:56:43,433 INFO L131 PetriNetUnfolder]: For 254/263 co-relation queries the response was YES. [2022-11-18 20:56:43,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 416 events. 98/416 cut-off events. For 254/263 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2426 event pairs, 8 based on Foata normal form. 6/416 useless extension candidates. Maximal degree in co-relation 529. Up to 51 conditions per place. [2022-11-18 20:56:43,437 INFO L137 encePairwiseOnDemand]: 81/90 looper letters, 56 selfloop transitions, 19 changer transitions 0/120 dead transitions. [2022-11-18 20:56:43,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 120 transitions, 572 flow [2022-11-18 20:56:43,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:56:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:56:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 758 transitions. [2022-11-18 20:56:43,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7656565656565657 [2022-11-18 20:56:43,441 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 758 transitions. [2022-11-18 20:56:43,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 758 transitions. [2022-11-18 20:56:43,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:43,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 758 transitions. [2022-11-18 20:56:43,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 68.9090909090909) internal successors, (758), 11 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,462 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,462 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 303 flow. Second operand 11 states and 758 transitions. [2022-11-18 20:56:43,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 120 transitions, 572 flow [2022-11-18 20:56:43,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 120 transitions, 532 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 20:56:43,468 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 295 flow [2022-11-18 20:56:43,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=295, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2022-11-18 20:56:43,470 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2022-11-18 20:56:43,470 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 295 flow [2022-11-18 20:56:43,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:43,472 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] [2022-11-18 20:56:43,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:56:43,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:56:43,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:43,473 INFO L85 PathProgramCache]: Analyzing trace with hash 964861001, now seen corresponding path program 1 times [2022-11-18 20:56:43,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:43,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622578387] [2022-11-18 20:56:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:43,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:43,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:43,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622578387] [2022-11-18 20:56:43,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622578387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:43,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:43,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:56:43,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047067895] [2022-11-18 20:56:43,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:43,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:56:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:43,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:56:43,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:56:43,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 90 [2022-11-18 20:56:43,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:43,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 90 [2022-11-18 20:56:43,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:43,683 INFO L130 PetriNetUnfolder]: 86/396 cut-off events. [2022-11-18 20:56:43,684 INFO L131 PetriNetUnfolder]: For 270/277 co-relation queries the response was YES. [2022-11-18 20:56:43,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 396 events. 86/396 cut-off events. For 270/277 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2373 event pairs, 45 based on Foata normal form. 27/407 useless extension candidates. Maximal degree in co-relation 792. Up to 115 conditions per place. [2022-11-18 20:56:43,687 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 33 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2022-11-18 20:56:43,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 428 flow [2022-11-18 20:56:43,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:56:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:56:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2022-11-18 20:56:43,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8044444444444444 [2022-11-18 20:56:43,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 362 transitions. [2022-11-18 20:56:43,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 362 transitions. [2022-11-18 20:56:43,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:43,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 362 transitions. [2022-11-18 20:56:43,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,693 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,694 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 295 flow. Second operand 5 states and 362 transitions. [2022-11-18 20:56:43,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 428 flow [2022-11-18 20:56:43,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 382 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 20:56:43,698 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 287 flow [2022-11-18 20:56:43,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2022-11-18 20:56:43,699 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 19 predicate places. [2022-11-18 20:56:43,699 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 287 flow [2022-11-18 20:56:43,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:43,700 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] [2022-11-18 20:56:43,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:56:43,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:56:43,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:43,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1541861173, now seen corresponding path program 1 times [2022-11-18 20:56:43,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:43,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212404103] [2022-11-18 20:56:43,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:43,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:43,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:43,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212404103] [2022-11-18 20:56:43,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212404103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:43,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:43,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:56:43,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365410368] [2022-11-18 20:56:43,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:43,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:56:43,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:56:43,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:56:43,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 90 [2022-11-18 20:56:43,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 287 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:43,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 90 [2022-11-18 20:56:43,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:43,961 INFO L130 PetriNetUnfolder]: 83/386 cut-off events. [2022-11-18 20:56:43,961 INFO L131 PetriNetUnfolder]: For 273/280 co-relation queries the response was YES. [2022-11-18 20:56:43,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 386 events. 83/386 cut-off events. For 273/280 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2264 event pairs, 51 based on Foata normal form. 7/381 useless extension candidates. Maximal degree in co-relation 827. Up to 115 conditions per place. [2022-11-18 20:56:43,965 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 32 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2022-11-18 20:56:43,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 399 flow [2022-11-18 20:56:43,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:56:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:56:43,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 541 transitions. [2022-11-18 20:56:43,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7513888888888889 [2022-11-18 20:56:43,968 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 541 transitions. [2022-11-18 20:56:43,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 541 transitions. [2022-11-18 20:56:43,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:43,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 541 transitions. [2022-11-18 20:56:43,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 90.0) internal successors, (810), 9 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,973 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 90.0) internal successors, (810), 9 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,973 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 287 flow. Second operand 8 states and 541 transitions. [2022-11-18 20:56:43,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 399 flow [2022-11-18 20:56:43,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 93 transitions, 392 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:56:43,977 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 286 flow [2022-11-18 20:56:43,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=286, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2022-11-18 20:56:43,978 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2022-11-18 20:56:43,978 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 286 flow [2022-11-18 20:56:43,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:43,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:43,979 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] [2022-11-18 20:56:43,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:56:43,979 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:56:43,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:43,980 INFO L85 PathProgramCache]: Analyzing trace with hash -560923636, now seen corresponding path program 1 times [2022-11-18 20:56:43,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:43,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471606471] [2022-11-18 20:56:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:44,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:44,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471606471] [2022-11-18 20:56:44,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471606471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:44,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:44,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:56:44,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479990131] [2022-11-18 20:56:44,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:44,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:56:44,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:44,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:56:44,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:56:44,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 90 [2022-11-18 20:56:44,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:44,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 90 [2022-11-18 20:56:44,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:44,267 INFO L130 PetriNetUnfolder]: 80/376 cut-off events. [2022-11-18 20:56:44,268 INFO L131 PetriNetUnfolder]: For 271/278 co-relation queries the response was YES. [2022-11-18 20:56:44,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 376 events. 80/376 cut-off events. For 271/278 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2167 event pairs, 45 based on Foata normal form. 14/382 useless extension candidates. Maximal degree in co-relation 817. Up to 116 conditions per place. [2022-11-18 20:56:44,271 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 22 selfloop transitions, 4 changer transitions 21/93 dead transitions. [2022-11-18 20:56:44,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 93 transitions, 401 flow [2022-11-18 20:56:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:56:44,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:56:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 413 transitions. [2022-11-18 20:56:44,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7648148148148148 [2022-11-18 20:56:44,274 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 413 transitions. [2022-11-18 20:56:44,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 413 transitions. [2022-11-18 20:56:44,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:44,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 413 transitions. [2022-11-18 20:56:44,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,285 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,285 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 286 flow. Second operand 6 states and 413 transitions. [2022-11-18 20:56:44,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 93 transitions, 401 flow [2022-11-18 20:56:44,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 385 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:56:44,290 INFO L231 Difference]: Finished difference. Result has 96 places, 67 transitions, 215 flow [2022-11-18 20:56:44,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=96, PETRI_TRANSITIONS=67} [2022-11-18 20:56:44,293 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2022-11-18 20:56:44,293 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 67 transitions, 215 flow [2022-11-18 20:56:44,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:44,294 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] [2022-11-18 20:56:44,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:56:44,295 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:56:44,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:44,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1947746352, now seen corresponding path program 1 times [2022-11-18 20:56:44,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:44,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578481027] [2022-11-18 20:56:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:44,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:44,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:44,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578481027] [2022-11-18 20:56:44,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578481027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:44,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:44,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:56:44,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763258238] [2022-11-18 20:56:44,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:44,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:56:44,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:44,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:56:44,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:56:44,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 90 [2022-11-18 20:56:44,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 67 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:44,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 90 [2022-11-18 20:56:44,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:44,576 INFO L130 PetriNetUnfolder]: 43/202 cut-off events. [2022-11-18 20:56:44,576 INFO L131 PetriNetUnfolder]: For 103/108 co-relation queries the response was YES. [2022-11-18 20:56:44,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 202 events. 43/202 cut-off events. For 103/108 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 808 event pairs, 29 based on Foata normal form. 5/203 useless extension candidates. Maximal degree in co-relation 391. Up to 88 conditions per place. [2022-11-18 20:56:44,578 INFO L137 encePairwiseOnDemand]: 85/90 looper letters, 21 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2022-11-18 20:56:44,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 71 transitions, 278 flow [2022-11-18 20:56:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:56:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:56:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 403 transitions. [2022-11-18 20:56:44,581 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7462962962962963 [2022-11-18 20:56:44,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 403 transitions. [2022-11-18 20:56:44,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 403 transitions. [2022-11-18 20:56:44,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:44,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 403 transitions. [2022-11-18 20:56:44,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,586 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,586 INFO L175 Difference]: Start difference. First operand has 96 places, 67 transitions, 215 flow. Second operand 6 states and 403 transitions. [2022-11-18 20:56:44,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 71 transitions, 278 flow [2022-11-18 20:56:44,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 71 transitions, 255 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-18 20:56:44,590 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 194 flow [2022-11-18 20:56:44,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2022-11-18 20:56:44,591 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2022-11-18 20:56:44,591 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 194 flow [2022-11-18 20:56:44,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:44,592 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] [2022-11-18 20:56:44,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:56:44,592 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:56:44,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:44,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1947746353, now seen corresponding path program 1 times [2022-11-18 20:56:44,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:44,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329862918] [2022-11-18 20:56:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:44,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:44,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:44,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329862918] [2022-11-18 20:56:44,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329862918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:44,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:44,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:56:44,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389088316] [2022-11-18 20:56:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:44,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:56:44,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:44,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:56:44,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:56:44,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 90 [2022-11-18 20:56:44,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:44,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 90 [2022-11-18 20:56:44,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:44,817 INFO L130 PetriNetUnfolder]: 43/199 cut-off events. [2022-11-18 20:56:44,817 INFO L131 PetriNetUnfolder]: For 67/72 co-relation queries the response was YES. [2022-11-18 20:56:44,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 199 events. 43/199 cut-off events. For 67/72 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 783 event pairs, 29 based on Foata normal form. 8/203 useless extension candidates. Maximal degree in co-relation 354. Up to 88 conditions per place. [2022-11-18 20:56:44,818 INFO L137 encePairwiseOnDemand]: 85/90 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2022-11-18 20:56:44,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 70 transitions, 259 flow [2022-11-18 20:56:44,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:56:44,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:56:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 402 transitions. [2022-11-18 20:56:44,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2022-11-18 20:56:44,821 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 402 transitions. [2022-11-18 20:56:44,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 402 transitions. [2022-11-18 20:56:44,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:44,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 402 transitions. [2022-11-18 20:56:44,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,827 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,827 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 194 flow. Second operand 6 states and 402 transitions. [2022-11-18 20:56:44,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 70 transitions, 259 flow [2022-11-18 20:56:44,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 70 transitions, 252 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:56:44,829 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2022-11-18 20:56:44,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2022-11-18 20:56:44,833 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2022-11-18 20:56:44,833 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2022-11-18 20:56:44,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:44,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-18 20:56:44,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-18 20:56:44,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-18 20:56:44,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-18 20:56:44,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-18 20:56:44,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-18 20:56:44,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-18 20:56:44,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-18 20:56:44,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-11-18 20:56:44,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-18 20:56:44,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-18 20:56:44,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-18 20:56:44,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-18 20:56:44,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-18 20:56:44,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-18 20:56:44,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-18 20:56:44,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-18 20:56:44,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-18 20:56:44,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:56:44,847 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:44,855 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:56:44,855 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:56:44,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:56:44 BasicIcfg [2022-11-18 20:56:44,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:56:44,863 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:56:44,863 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:56:44,863 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:56:44,864 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:39" (3/4) ... [2022-11-18 20:56:44,867 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:56:44,874 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 20:56:44,874 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 20:56:44,880 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-18 20:56:44,881 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:56:44,881 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:56:44,881 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:56:44,928 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:56:44,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:56:44,929 INFO L158 Benchmark]: Toolchain (without parser) took 7062.21ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 85.3MB in the beginning and 47.2MB in the end (delta: 38.2MB). Peak memory consumption was 83.4MB. Max. memory is 16.1GB. [2022-11-18 20:56:44,930 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 121.6MB. Free memory was 92.8MB in the beginning and 92.8MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:56:44,930 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.93ms. Allocated memory is still 121.6MB. Free memory was 85.3MB in the beginning and 95.1MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:56:44,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.98ms. Allocated memory is still 121.6MB. Free memory was 95.1MB in the beginning and 93.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:56:44,931 INFO L158 Benchmark]: Boogie Preprocessor took 59.72ms. Allocated memory is still 121.6MB. Free memory was 93.7MB in the beginning and 92.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:56:44,932 INFO L158 Benchmark]: RCFGBuilder took 763.86ms. Allocated memory is still 121.6MB. Free memory was 92.2MB in the beginning and 73.4MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-18 20:56:44,932 INFO L158 Benchmark]: TraceAbstraction took 5607.22ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 72.7MB in the beginning and 49.3MB in the end (delta: 23.5MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. [2022-11-18 20:56:44,932 INFO L158 Benchmark]: Witness Printer took 65.56ms. Allocated memory is still 167.8MB. Free memory was 49.3MB in the beginning and 47.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:56:44,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 121.6MB. Free memory was 92.8MB in the beginning and 92.8MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 487.93ms. Allocated memory is still 121.6MB. Free memory was 85.3MB in the beginning and 95.1MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.98ms. Allocated memory is still 121.6MB. Free memory was 95.1MB in the beginning and 93.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 59.72ms. Allocated memory is still 121.6MB. Free memory was 93.7MB in the beginning and 92.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 763.86ms. Allocated memory is still 121.6MB. Free memory was 92.2MB in the beginning and 73.4MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5607.22ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 72.7MB in the beginning and 49.3MB in the end (delta: 23.5MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. * Witness Printer took 65.56ms. Allocated memory is still 167.8MB. Free memory was 49.3MB in the beginning and 47.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 124 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.4s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 678 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 678 mSDsluCounter, 159 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 712 IncrementalHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 66 mSDtfsCounter, 712 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324occurred in iteration=5, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 494 NumberOfCodeBlocks, 494 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 482 ConstructedInterpolants, 0 QuantifiedInterpolants, 1212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:56:44,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7540fa-cf28-4446-a71b-53e63525a63c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE