./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8 --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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- 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-e04fb08 [2022-11-16 11:26:27,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:26:27,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:26:27,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:26:27,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:26:27,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:26:27,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:26:27,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:26:27,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:26:27,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:26:27,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:26:27,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:26:27,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:26:27,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:26:27,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:26:27,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:26:27,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:26:27,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:26:27,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:26:27,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:26:27,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:26:27,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:26:27,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:26:27,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:26:27,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:26:27,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:26:27,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:26:27,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:26:27,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:26:27,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:26:27,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:26:27,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:26:27,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:26:27,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:26:27,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:26:27,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:26:27,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:26:27,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:26:27,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:26:27,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:26:27,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:26:27,375 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:26:27,431 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:26:27,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:26:27,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:26:27,431 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:26:27,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:26:27,432 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:26:27,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:26:27,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:26:27,437 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:26:27,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:26:27,438 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:26:27,439 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:26:27,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:26:27,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:26:27,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:26:27,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:26:27,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:26:27,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:26:27,440 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:26:27,440 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:26:27,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:26:27,441 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:26:27,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:26:27,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:26:27,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:26:27,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:26:27,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:26:27,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:26:27,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:26:27,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:26:27,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:26:27,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:26:27,446 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:26:27,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:26:27,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:26:27,447 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_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2022-11-16 11:26:27,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:26:27,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:26:27,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:26:27,804 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:26:27,805 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:26:27,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-11-16 11:26:27,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/data/b349af6fa/c19d619f6c5d4cabb64476f4ccd510f9/FLAGfdfed1712 [2022-11-16 11:26:28,503 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:26:28,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-11-16 11:26:28,536 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/data/b349af6fa/c19d619f6c5d4cabb64476f4ccd510f9/FLAGfdfed1712 [2022-11-16 11:26:28,741 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/data/b349af6fa/c19d619f6c5d4cabb64476f4ccd510f9 [2022-11-16 11:26:28,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:26:28,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:26:28,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:26:28,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:26:28,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:26:28,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:26:28" (1/1) ... [2022-11-16 11:26:28,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3f4faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:28, skipping insertion in model container [2022-11-16 11:26:28,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:26:28" (1/1) ... [2022-11-16 11:26:28,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:26:28,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:26:29,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:26:29,540 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:26:29,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:26:29,692 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:26:29,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29 WrapperNode [2022-11-16 11:26:29,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:26:29,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:26:29,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:26:29,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:26:29,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29" (1/1) ... [2022-11-16 11:26:29,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29" (1/1) ... [2022-11-16 11:26:29,782 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-16 11:26:29,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:26:29,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:26:29,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:26:29,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:26:29,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29" (1/1) ... [2022-11-16 11:26:29,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29" (1/1) ... [2022-11-16 11:26:29,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29" (1/1) ... [2022-11-16 11:26:29,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29" (1/1) ... [2022-11-16 11:26:29,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29" (1/1) ... [2022-11-16 11:26:29,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29" (1/1) ... [2022-11-16 11:26:29,836 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29" (1/1) ... [2022-11-16 11:26:29,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29" (1/1) ... [2022-11-16 11:26:29,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:26:29,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:26:29,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:26:29,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:26:29,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29" (1/1) ... [2022-11-16 11:26:29,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:26:29,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:29,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:26:29,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:26:29,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:26:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:26:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:26:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:26:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:26:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:26:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:26:29,948 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:26:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:26:29,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:26:29,950 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:26:30,166 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:26:30,178 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:26:30,410 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:26:30,418 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:26:30,418 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:26:30,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:26:30 BoogieIcfgContainer [2022-11-16 11:26:30,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:26:30,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:26:30,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:26:30,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:26:30,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:26:28" (1/3) ... [2022-11-16 11:26:30,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7030131b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:26:30, skipping insertion in model container [2022-11-16 11:26:30,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:29" (2/3) ... [2022-11-16 11:26:30,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7030131b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:26:30, skipping insertion in model container [2022-11-16 11:26:30,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:26:30" (3/3) ... [2022-11-16 11:26:30,435 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2022-11-16 11:26:30,451 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:26:30,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:26:30,463 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 11:26:30,464 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:26:30,568 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:26:30,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions, 179 flow [2022-11-16 11:26:30,673 INFO L130 PetriNetUnfolder]: 4/86 cut-off events. [2022-11-16 11:26:30,674 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:26:30,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 4/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-16 11:26:30,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 87 transitions, 179 flow [2022-11-16 11:26:30,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 86 transitions, 175 flow [2022-11-16 11:26:30,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:26:30,711 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;@1d6b7f0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:26:30,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 11:26:30,725 INFO L130 PetriNetUnfolder]: 1/19 cut-off events. [2022-11-16 11:26:30,725 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:26:30,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:30,726 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:30,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:30,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1677450047, now seen corresponding path program 1 times [2022-11-16 11:26:30,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:30,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190727566] [2022-11-16 11:26:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:30,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:31,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:31,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190727566] [2022-11-16 11:26:31,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190727566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:31,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:31,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:26:31,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343476123] [2022-11-16 11:26:31,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:31,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:26:31,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:31,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:26:31,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:26:31,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-16 11:26:31,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 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) [2022-11-16 11:26:31,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:31,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-16 11:26:31,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:31,327 INFO L130 PetriNetUnfolder]: 1/90 cut-off events. [2022-11-16 11:26:31,327 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:26:31,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 90 events. 1/90 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 62. Up to 14 conditions per place. [2022-11-16 11:26:31,329 INFO L137 encePairwiseOnDemand]: 77/87 looper letters, 16 selfloop transitions, 4 changer transitions 1/90 dead transitions. [2022-11-16 11:26:31,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 223 flow [2022-11-16 11:26:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:26:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2022-11-16 11:26:31,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8781609195402299 [2022-11-16 11:26:31,347 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2022-11-16 11:26:31,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2022-11-16 11:26:31,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:31,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2022-11-16 11:26:31,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 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) [2022-11-16 11:26:31,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2022-11-16 11:26:31,375 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2022-11-16 11:26:31,377 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 175 flow. Second operand 5 states and 382 transitions. [2022-11-16 11:26:31,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 223 flow [2022-11-16 11:26:31,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:26:31,400 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 198 flow [2022-11-16 11:26:31,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2022-11-16 11:26:31,409 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 6 predicate places. [2022-11-16 11:26:31,409 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 198 flow [2022-11-16 11:26:31,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 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) [2022-11-16 11:26:31,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:31,410 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:31,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:26:31,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:31,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:31,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1414112580, now seen corresponding path program 1 times [2022-11-16 11:26:31,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:31,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419782465] [2022-11-16 11:26:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:31,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:31,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:31,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419782465] [2022-11-16 11:26:31,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419782465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:31,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:31,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:26:31,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884648392] [2022-11-16 11:26:31,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:31,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:26:31,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:31,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:26:31,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:26:31,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-16 11:26:31,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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) [2022-11-16 11:26:31,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:31,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-16 11:26:31,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:31,629 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2022-11-16 11:26:31,629 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:26:31,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 88 events. 1/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 86. Up to 7 conditions per place. [2022-11-16 11:26:31,630 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 8 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2022-11-16 11:26:31,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 228 flow [2022-11-16 11:26:31,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:26:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2022-11-16 11:26:31,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8482758620689655 [2022-11-16 11:26:31,634 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 369 transitions. [2022-11-16 11:26:31,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 369 transitions. [2022-11-16 11:26:31,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:31,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 369 transitions. [2022-11-16 11:26:31,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 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) [2022-11-16 11:26:31,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2022-11-16 11:26:31,639 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2022-11-16 11:26:31,640 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 198 flow. Second operand 5 states and 369 transitions. [2022-11-16 11:26:31,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 85 transitions, 228 flow [2022-11-16 11:26:31,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 85 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:26:31,644 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 216 flow [2022-11-16 11:26:31,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2022-11-16 11:26:31,645 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2022-11-16 11:26:31,645 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 216 flow [2022-11-16 11:26:31,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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) [2022-11-16 11:26:31,646 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:31,646 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:31,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:26:31,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:31,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:31,648 INFO L85 PathProgramCache]: Analyzing trace with hash 887817208, now seen corresponding path program 1 times [2022-11-16 11:26:31,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:31,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153508029] [2022-11-16 11:26:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:31,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:31,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:31,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153508029] [2022-11-16 11:26:31,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153508029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:31,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811651367] [2022-11-16 11:26:31,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:31,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:31,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:31,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:31,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:26:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:31,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:26:31,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:32,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:32,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811651367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:32,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:26:32,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:26:32,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774011841] [2022-11-16 11:26:32,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:32,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:26:32,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:32,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:26:32,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:26:32,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-16 11:26:32,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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) [2022-11-16 11:26:32,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:32,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-16 11:26:32,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:32,143 INFO L130 PetriNetUnfolder]: 1/87 cut-off events. [2022-11-16 11:26:32,143 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-16 11:26:32,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 87 events. 1/87 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 12. Up to 6 conditions per place. [2022-11-16 11:26:32,144 INFO L137 encePairwiseOnDemand]: 82/87 looper letters, 12 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2022-11-16 11:26:32,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 87 transitions, 254 flow [2022-11-16 11:26:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:26:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:26:32,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 516 transitions. [2022-11-16 11:26:32,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8472906403940886 [2022-11-16 11:26:32,147 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 516 transitions. [2022-11-16 11:26:32,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 516 transitions. [2022-11-16 11:26:32,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:32,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 516 transitions. [2022-11-16 11:26:32,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 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) [2022-11-16 11:26:32,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 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) [2022-11-16 11:26:32,153 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 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) [2022-11-16 11:26:32,153 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 216 flow. Second operand 7 states and 516 transitions. [2022-11-16 11:26:32,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 87 transitions, 254 flow [2022-11-16 11:26:32,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 87 transitions, 242 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:26:32,158 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 212 flow [2022-11-16 11:26:32,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=212, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2022-11-16 11:26:32,159 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 10 predicate places. [2022-11-16 11:26:32,159 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 212 flow [2022-11-16 11:26:32,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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) [2022-11-16 11:26:32,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:32,160 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] [2022-11-16 11:26:32,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:32,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:32,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:32,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:32,368 INFO L85 PathProgramCache]: Analyzing trace with hash -988423937, now seen corresponding path program 1 times [2022-11-16 11:26:32,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:32,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824027804] [2022-11-16 11:26:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:32,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:32,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:32,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824027804] [2022-11-16 11:26:32,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824027804] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:32,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545795026] [2022-11-16 11:26:32,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:32,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:32,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:32,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:32,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:26:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:32,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:26:32,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:32,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:32,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545795026] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:32,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:26:32,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:26:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857913330] [2022-11-16 11:26:32,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:26:32,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:32,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:26:32,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:26:32,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-16 11:26:32,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 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) [2022-11-16 11:26:32,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:32,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-16 11:26:32,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:32,844 INFO L130 PetriNetUnfolder]: 1/95 cut-off events. [2022-11-16 11:26:32,850 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-16 11:26:32,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 95 events. 1/95 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 2/92 useless extension candidates. Maximal degree in co-relation 74. Up to 7 conditions per place. [2022-11-16 11:26:32,853 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 17 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2022-11-16 11:26:32,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 95 transitions, 302 flow [2022-11-16 11:26:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:26:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:26:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2022-11-16 11:26:32,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2022-11-16 11:26:32,856 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2022-11-16 11:26:32,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2022-11-16 11:26:32,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:32,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2022-11-16 11:26:32,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.11111111111111) internal successors, (667), 9 states have internal predecessors, (667), 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) [2022-11-16 11:26:32,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 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) [2022-11-16 11:26:32,865 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 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) [2022-11-16 11:26:32,865 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 212 flow. Second operand 9 states and 667 transitions. [2022-11-16 11:26:32,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 95 transitions, 302 flow [2022-11-16 11:26:32,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 289 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-16 11:26:32,873 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 259 flow [2022-11-16 11:26:32,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=259, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2022-11-16 11:26:32,875 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 17 predicate places. [2022-11-16 11:26:32,875 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 259 flow [2022-11-16 11:26:32,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 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) [2022-11-16 11:26:32,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:32,877 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:32,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:33,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:33,083 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:33,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2045090657, now seen corresponding path program 2 times [2022-11-16 11:26:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:33,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541543560] [2022-11-16 11:26:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:33,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:33,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541543560] [2022-11-16 11:26:33,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541543560] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:33,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451595661] [2022-11-16 11:26:33,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:26:33,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:33,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:33,274 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:33,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:26:33,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:26:33,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:33,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:26:33,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:33,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-16 11:26:33,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:33,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-16 11:26:33,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-11-16 11:26:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:26:33,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:33,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451595661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:33,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:26:33,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2022-11-16 11:26:33,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132851567] [2022-11-16 11:26:33,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:33,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:26:33,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:33,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:26:33,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:26:33,980 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 87 [2022-11-16 11:26:33,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 259 flow. Second operand has 9 states, 9 states have (on average 61.333333333333336) internal successors, (552), 9 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:33,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:33,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 87 [2022-11-16 11:26:33,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:34,169 INFO L130 PetriNetUnfolder]: 41/234 cut-off events. [2022-11-16 11:26:34,169 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 11:26:34,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 234 events. 41/234 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 947 event pairs, 20 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 313. Up to 92 conditions per place. [2022-11-16 11:26:34,172 INFO L137 encePairwiseOnDemand]: 78/87 looper letters, 24 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2022-11-16 11:26:34,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 97 transitions, 343 flow [2022-11-16 11:26:34,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:26:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:26:34,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 514 transitions. [2022-11-16 11:26:34,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7385057471264368 [2022-11-16 11:26:34,175 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 514 transitions. [2022-11-16 11:26:34,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 514 transitions. [2022-11-16 11:26:34,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:34,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 514 transitions. [2022-11-16 11:26:34,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 64.25) internal successors, (514), 8 states have internal predecessors, (514), 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) [2022-11-16 11:26:34,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 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) [2022-11-16 11:26:34,180 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 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) [2022-11-16 11:26:34,180 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 259 flow. Second operand 8 states and 514 transitions. [2022-11-16 11:26:34,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 97 transitions, 343 flow [2022-11-16 11:26:34,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 97 transitions, 329 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-16 11:26:34,185 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 293 flow [2022-11-16 11:26:34,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=293, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2022-11-16 11:26:34,186 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 23 predicate places. [2022-11-16 11:26:34,186 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 293 flow [2022-11-16 11:26:34,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 61.333333333333336) internal successors, (552), 9 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:34,187 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:34,187 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:34,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:34,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:34,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:34,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1026699263, now seen corresponding path program 1 times [2022-11-16 11:26:34,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:34,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593996124] [2022-11-16 11:26:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:34,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:34,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:34,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593996124] [2022-11-16 11:26:34,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593996124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:34,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586242347] [2022-11-16 11:26:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:34,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:34,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:34,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:34,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:26:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:34,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:26:34,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:34,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:34,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586242347] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:34,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:26:34,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:26:34,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490563913] [2022-11-16 11:26:34,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:34,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:26:34,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:26:34,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:26:34,887 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-16 11:26:34,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 293 flow. Second operand has 18 states, 18 states have (on average 74.05555555555556) internal successors, (1333), 18 states have internal predecessors, (1333), 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) [2022-11-16 11:26:34,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:34,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-16 11:26:34,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:35,165 INFO L130 PetriNetUnfolder]: 2/168 cut-off events. [2022-11-16 11:26:35,165 INFO L131 PetriNetUnfolder]: For 67/68 co-relation queries the response was YES. [2022-11-16 11:26:35,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 168 events. 2/168 cut-off events. For 67/68 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 265 event pairs, 0 based on Foata normal form. 4/162 useless extension candidates. Maximal degree in co-relation 273. Up to 9 conditions per place. [2022-11-16 11:26:35,167 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 33 selfloop transitions, 21 changer transitions 0/128 dead transitions. [2022-11-16 11:26:35,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 128 transitions, 563 flow [2022-11-16 11:26:35,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:26:35,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:26:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1549 transitions. [2022-11-16 11:26:35,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8478379857690203 [2022-11-16 11:26:35,172 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1549 transitions. [2022-11-16 11:26:35,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1549 transitions. [2022-11-16 11:26:35,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:35,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1549 transitions. [2022-11-16 11:26:35,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 73.76190476190476) internal successors, (1549), 21 states have internal predecessors, (1549), 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) [2022-11-16 11:26:35,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 87.0) internal successors, (1914), 22 states have internal predecessors, (1914), 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) [2022-11-16 11:26:35,188 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 87.0) internal successors, (1914), 22 states have internal predecessors, (1914), 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) [2022-11-16 11:26:35,188 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 293 flow. Second operand 21 states and 1549 transitions. [2022-11-16 11:26:35,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 128 transitions, 563 flow [2022-11-16 11:26:35,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 128 transitions, 553 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:26:35,200 INFO L231 Difference]: Finished difference. Result has 130 places, 106 transitions, 447 flow [2022-11-16 11:26:35,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=447, PETRI_PLACES=130, PETRI_TRANSITIONS=106} [2022-11-16 11:26:35,203 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 44 predicate places. [2022-11-16 11:26:35,203 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 106 transitions, 447 flow [2022-11-16 11:26:35,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 74.05555555555556) internal successors, (1333), 18 states have internal predecessors, (1333), 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) [2022-11-16 11:26:35,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:35,205 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:35,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:35,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:26:35,411 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:35,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1125676865, now seen corresponding path program 2 times [2022-11-16 11:26:35,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:35,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100910739] [2022-11-16 11:26:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:35,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:35,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:35,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100910739] [2022-11-16 11:26:35,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100910739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:35,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158584338] [2022-11-16 11:26:35,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:26:35,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:35,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:35,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:35,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:26:35,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:26:35,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:35,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:26:36,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:36,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-16 11:26:36,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:36,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-16 11:26:36,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-11-16 11:26:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-16 11:26:36,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:36,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158584338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:36,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:26:36,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 24 [2022-11-16 11:26:36,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405903356] [2022-11-16 11:26:36,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:36,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:26:36,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:36,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:26:36,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:26:36,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 87 [2022-11-16 11:26:36,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 106 transitions, 447 flow. Second operand has 9 states, 9 states have (on average 61.44444444444444) internal successors, (553), 9 states have internal predecessors, (553), 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) [2022-11-16 11:26:36,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:36,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 87 [2022-11-16 11:26:36,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:36,868 INFO L130 PetriNetUnfolder]: 42/313 cut-off events. [2022-11-16 11:26:36,869 INFO L131 PetriNetUnfolder]: For 171/190 co-relation queries the response was YES. [2022-11-16 11:26:36,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 313 events. 42/313 cut-off events. For 171/190 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1244 event pairs, 23 based on Foata normal form. 8/284 useless extension candidates. Maximal degree in co-relation 411. Up to 88 conditions per place. [2022-11-16 11:26:36,874 INFO L137 encePairwiseOnDemand]: 78/87 looper letters, 24 selfloop transitions, 9 changer transitions 2/111 dead transitions. [2022-11-16 11:26:36,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 111 transitions, 529 flow [2022-11-16 11:26:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:26:36,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:26:36,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 515 transitions. [2022-11-16 11:26:36,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7399425287356322 [2022-11-16 11:26:36,878 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 515 transitions. [2022-11-16 11:26:36,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 515 transitions. [2022-11-16 11:26:36,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:36,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 515 transitions. [2022-11-16 11:26:36,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 64.375) internal successors, (515), 8 states have internal predecessors, (515), 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) [2022-11-16 11:26:36,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 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) [2022-11-16 11:26:36,882 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 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) [2022-11-16 11:26:36,883 INFO L175 Difference]: Start difference. First operand has 130 places, 106 transitions, 447 flow. Second operand 8 states and 515 transitions. [2022-11-16 11:26:36,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 111 transitions, 529 flow [2022-11-16 11:26:36,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 111 transitions, 485 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-11-16 11:26:36,889 INFO L231 Difference]: Finished difference. Result has 131 places, 106 transitions, 427 flow [2022-11-16 11:26:36,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=427, PETRI_PLACES=131, PETRI_TRANSITIONS=106} [2022-11-16 11:26:36,891 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 45 predicate places. [2022-11-16 11:26:36,891 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 106 transitions, 427 flow [2022-11-16 11:26:36,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 61.44444444444444) internal successors, (553), 9 states have internal predecessors, (553), 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) [2022-11-16 11:26:36,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:36,892 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:36,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:37,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:37,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:37,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:37,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1240098145, now seen corresponding path program 1 times [2022-11-16 11:26:37,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:37,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580411995] [2022-11-16 11:26:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:37,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:37,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:37,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580411995] [2022-11-16 11:26:37,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580411995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:37,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417668974] [2022-11-16 11:26:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:37,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:37,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:37,544 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:37,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:26:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:37,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:26:37,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:37,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:38,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417668974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:38,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:26:38,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 11:26:38,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517380900] [2022-11-16 11:26:38,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:38,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:26:38,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:38,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:26:38,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:26:38,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-16 11:26:38,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 106 transitions, 427 flow. Second operand has 23 states, 23 states have (on average 74.30434782608695) internal successors, (1709), 23 states have internal predecessors, (1709), 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) [2022-11-16 11:26:38,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:38,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-16 11:26:38,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:38,586 INFO L130 PetriNetUnfolder]: 2/187 cut-off events. [2022-11-16 11:26:38,587 INFO L131 PetriNetUnfolder]: For 187/188 co-relation queries the response was YES. [2022-11-16 11:26:38,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 187 events. 2/187 cut-off events. For 187/188 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 259 event pairs, 0 based on Foata normal form. 3/182 useless extension candidates. Maximal degree in co-relation 377. Up to 12 conditions per place. [2022-11-16 11:26:38,588 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 45 selfloop transitions, 30 changer transitions 0/149 dead transitions. [2022-11-16 11:26:38,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 149 transitions, 775 flow [2022-11-16 11:26:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:26:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:26:38,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2208 transitions. [2022-11-16 11:26:38,595 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8459770114942529 [2022-11-16 11:26:38,595 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2208 transitions. [2022-11-16 11:26:38,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2208 transitions. [2022-11-16 11:26:38,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:38,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2208 transitions. [2022-11-16 11:26:38,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 73.6) internal successors, (2208), 30 states have internal predecessors, (2208), 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) [2022-11-16 11:26:38,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 87.0) internal successors, (2697), 31 states have internal predecessors, (2697), 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) [2022-11-16 11:26:38,611 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 87.0) internal successors, (2697), 31 states have internal predecessors, (2697), 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) [2022-11-16 11:26:38,611 INFO L175 Difference]: Start difference. First operand has 131 places, 106 transitions, 427 flow. Second operand 30 states and 2208 transitions. [2022-11-16 11:26:38,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 149 transitions, 775 flow [2022-11-16 11:26:38,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 759 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:26:38,617 INFO L231 Difference]: Finished difference. Result has 157 places, 116 transitions, 577 flow [2022-11-16 11:26:38,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=577, PETRI_PLACES=157, PETRI_TRANSITIONS=116} [2022-11-16 11:26:38,618 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 71 predicate places. [2022-11-16 11:26:38,618 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 116 transitions, 577 flow [2022-11-16 11:26:38,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 74.30434782608695) internal successors, (1709), 23 states have internal predecessors, (1709), 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) [2022-11-16 11:26:38,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:38,620 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:38,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:38,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:38,825 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:38,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:38,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2104647484, now seen corresponding path program 2 times [2022-11-16 11:26:38,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:38,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166631280] [2022-11-16 11:26:38,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:38,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:26:39,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:39,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166631280] [2022-11-16 11:26:39,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166631280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:39,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:39,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:26:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132512787] [2022-11-16 11:26:39,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:39,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:26:39,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:39,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:26:39,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:26:39,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 87 [2022-11-16 11:26:39,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 116 transitions, 577 flow. Second operand has 10 states, 10 states have (on average 59.4) internal successors, (594), 10 states have internal predecessors, (594), 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) [2022-11-16 11:26:39,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:39,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 87 [2022-11-16 11:26:39,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:39,636 INFO L130 PetriNetUnfolder]: 93/418 cut-off events. [2022-11-16 11:26:39,636 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-11-16 11:26:39,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 418 events. 93/418 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1572 event pairs, 32 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 614. Up to 105 conditions per place. [2022-11-16 11:26:39,639 INFO L137 encePairwiseOnDemand]: 75/87 looper letters, 35 selfloop transitions, 10 changer transitions 22/154 dead transitions. [2022-11-16 11:26:39,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 154 transitions, 801 flow [2022-11-16 11:26:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:26:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:26:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 706 transitions. [2022-11-16 11:26:39,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7377220480668757 [2022-11-16 11:26:39,644 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 706 transitions. [2022-11-16 11:26:39,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 706 transitions. [2022-11-16 11:26:39,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:39,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 706 transitions. [2022-11-16 11:26:39,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 64.18181818181819) internal successors, (706), 11 states have internal predecessors, (706), 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) [2022-11-16 11:26:39,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 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) [2022-11-16 11:26:39,654 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 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) [2022-11-16 11:26:39,654 INFO L175 Difference]: Start difference. First operand has 157 places, 116 transitions, 577 flow. Second operand 11 states and 706 transitions. [2022-11-16 11:26:39,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 154 transitions, 801 flow [2022-11-16 11:26:39,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 154 transitions, 755 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 11:26:39,661 INFO L231 Difference]: Finished difference. Result has 154 places, 118 transitions, 578 flow [2022-11-16 11:26:39,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=578, PETRI_PLACES=154, PETRI_TRANSITIONS=118} [2022-11-16 11:26:39,663 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 68 predicate places. [2022-11-16 11:26:39,663 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 118 transitions, 578 flow [2022-11-16 11:26:39,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.4) internal successors, (594), 10 states have internal predecessors, (594), 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) [2022-11-16 11:26:39,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:39,664 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:39,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:26:39,665 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:39,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash 412252961, now seen corresponding path program 1 times [2022-11-16 11:26:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:39,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523395130] [2022-11-16 11:26:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:39,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:26:40,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:40,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523395130] [2022-11-16 11:26:40,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523395130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:40,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:40,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:26:40,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057790440] [2022-11-16 11:26:40,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:40,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:26:40,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:26:40,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:26:40,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 87 [2022-11-16 11:26:40,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 118 transitions, 578 flow. Second operand has 10 states, 10 states have (on average 59.5) internal successors, (595), 10 states have internal predecessors, (595), 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) [2022-11-16 11:26:40,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:40,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 87 [2022-11-16 11:26:40,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:40,479 INFO L130 PetriNetUnfolder]: 30/269 cut-off events. [2022-11-16 11:26:40,480 INFO L131 PetriNetUnfolder]: For 316/335 co-relation queries the response was YES. [2022-11-16 11:26:40,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 269 events. 30/269 cut-off events. For 316/335 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 844 event pairs, 6 based on Foata normal form. 8/266 useless extension candidates. Maximal degree in co-relation 652. Up to 30 conditions per place. [2022-11-16 11:26:40,482 INFO L137 encePairwiseOnDemand]: 75/87 looper letters, 30 selfloop transitions, 12 changer transitions 10/137 dead transitions. [2022-11-16 11:26:40,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 137 transitions, 770 flow [2022-11-16 11:26:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:26:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:26:40,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 688 transitions. [2022-11-16 11:26:40,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7189132706374086 [2022-11-16 11:26:40,486 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 688 transitions. [2022-11-16 11:26:40,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 688 transitions. [2022-11-16 11:26:40,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:40,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 688 transitions. [2022-11-16 11:26:40,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 62.54545454545455) internal successors, (688), 11 states have internal predecessors, (688), 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) [2022-11-16 11:26:40,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 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) [2022-11-16 11:26:40,493 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 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) [2022-11-16 11:26:40,493 INFO L175 Difference]: Start difference. First operand has 154 places, 118 transitions, 578 flow. Second operand 11 states and 688 transitions. [2022-11-16 11:26:40,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 137 transitions, 770 flow [2022-11-16 11:26:40,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 137 transitions, 745 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-16 11:26:40,501 INFO L231 Difference]: Finished difference. Result has 160 places, 120 transitions, 616 flow [2022-11-16 11:26:40,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=616, PETRI_PLACES=160, PETRI_TRANSITIONS=120} [2022-11-16 11:26:40,504 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 74 predicate places. [2022-11-16 11:26:40,504 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 120 transitions, 616 flow [2022-11-16 11:26:40,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.5) internal successors, (595), 10 states have internal predecessors, (595), 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) [2022-11-16 11:26:40,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:40,505 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:40,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:26:40,505 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:40,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:40,506 INFO L85 PathProgramCache]: Analyzing trace with hash -538601876, now seen corresponding path program 1 times [2022-11-16 11:26:40,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:40,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882291259] [2022-11-16 11:26:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:40,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:26:41,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:41,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882291259] [2022-11-16 11:26:41,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882291259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:41,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:41,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:26:41,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720025027] [2022-11-16 11:26:41,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:41,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:26:41,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:41,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:26:41,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:26:41,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 87 [2022-11-16 11:26:41,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 120 transitions, 616 flow. Second operand has 13 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 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) [2022-11-16 11:26:41,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:41,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 87 [2022-11-16 11:26:41,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:41,847 INFO L130 PetriNetUnfolder]: 102/398 cut-off events. [2022-11-16 11:26:41,847 INFO L131 PetriNetUnfolder]: For 473/476 co-relation queries the response was YES. [2022-11-16 11:26:41,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 398 events. 102/398 cut-off events. For 473/476 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1448 event pairs, 5 based on Foata normal form. 8/404 useless extension candidates. Maximal degree in co-relation 956. Up to 44 conditions per place. [2022-11-16 11:26:41,851 INFO L137 encePairwiseOnDemand]: 74/87 looper letters, 60 selfloop transitions, 16 changer transitions 24/177 dead transitions. [2022-11-16 11:26:41,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 177 transitions, 1054 flow [2022-11-16 11:26:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:26:41,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 11:26:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1062 transitions. [2022-11-16 11:26:41,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6424682395644283 [2022-11-16 11:26:41,855 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1062 transitions. [2022-11-16 11:26:41,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1062 transitions. [2022-11-16 11:26:41,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:41,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1062 transitions. [2022-11-16 11:26:41,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 55.89473684210526) internal successors, (1062), 19 states have internal predecessors, (1062), 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) [2022-11-16 11:26:41,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 87.0) internal successors, (1740), 20 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:41,863 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 87.0) internal successors, (1740), 20 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:41,863 INFO L175 Difference]: Start difference. First operand has 160 places, 120 transitions, 616 flow. Second operand 19 states and 1062 transitions. [2022-11-16 11:26:41,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 177 transitions, 1054 flow [2022-11-16 11:26:41,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 177 transitions, 1011 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-16 11:26:41,872 INFO L231 Difference]: Finished difference. Result has 168 places, 119 transitions, 623 flow [2022-11-16 11:26:41,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=623, PETRI_PLACES=168, PETRI_TRANSITIONS=119} [2022-11-16 11:26:41,873 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 82 predicate places. [2022-11-16 11:26:41,874 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 119 transitions, 623 flow [2022-11-16 11:26:41,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 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) [2022-11-16 11:26:41,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:41,874 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:41,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:26:41,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:41,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:41,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1014950869, now seen corresponding path program 1 times [2022-11-16 11:26:41,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:41,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305988406] [2022-11-16 11:26:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:41,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:42,652 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:26:42,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:42,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305988406] [2022-11-16 11:26:42,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305988406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:42,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:42,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:26:42,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683911385] [2022-11-16 11:26:42,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:42,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:26:42,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:42,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:26:42,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:26:42,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 87 [2022-11-16 11:26:42,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 119 transitions, 623 flow. Second operand has 13 states, 13 states have (on average 50.69230769230769) internal successors, (659), 13 states have internal predecessors, (659), 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) [2022-11-16 11:26:42,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:42,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 87 [2022-11-16 11:26:42,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:43,261 INFO L130 PetriNetUnfolder]: 76/347 cut-off events. [2022-11-16 11:26:43,261 INFO L131 PetriNetUnfolder]: For 413/414 co-relation queries the response was YES. [2022-11-16 11:26:43,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 347 events. 76/347 cut-off events. For 413/414 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1152 event pairs, 5 based on Foata normal form. 4/350 useless extension candidates. Maximal degree in co-relation 711. Up to 69 conditions per place. [2022-11-16 11:26:43,265 INFO L137 encePairwiseOnDemand]: 73/87 looper letters, 57 selfloop transitions, 21 changer transitions 5/158 dead transitions. [2022-11-16 11:26:43,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 158 transitions, 923 flow [2022-11-16 11:26:43,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:26:43,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:26:43,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 963 transitions. [2022-11-16 11:26:43,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6149425287356322 [2022-11-16 11:26:43,269 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 963 transitions. [2022-11-16 11:26:43,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 963 transitions. [2022-11-16 11:26:43,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:43,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 963 transitions. [2022-11-16 11:26:43,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 53.5) internal successors, (963), 18 states have internal predecessors, (963), 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) [2022-11-16 11:26:43,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 87.0) internal successors, (1653), 19 states have internal predecessors, (1653), 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) [2022-11-16 11:26:43,276 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 87.0) internal successors, (1653), 19 states have internal predecessors, (1653), 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) [2022-11-16 11:26:43,277 INFO L175 Difference]: Start difference. First operand has 168 places, 119 transitions, 623 flow. Second operand 18 states and 963 transitions. [2022-11-16 11:26:43,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 158 transitions, 923 flow [2022-11-16 11:26:43,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 158 transitions, 860 flow, removed 6 selfloop flow, removed 15 redundant places. [2022-11-16 11:26:43,285 INFO L231 Difference]: Finished difference. Result has 165 places, 122 transitions, 632 flow [2022-11-16 11:26:43,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=632, PETRI_PLACES=165, PETRI_TRANSITIONS=122} [2022-11-16 11:26:43,286 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 79 predicate places. [2022-11-16 11:26:43,287 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 122 transitions, 632 flow [2022-11-16 11:26:43,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 50.69230769230769) internal successors, (659), 13 states have internal predecessors, (659), 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) [2022-11-16 11:26:43,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:43,287 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:43,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:26:43,288 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:43,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:43,288 INFO L85 PathProgramCache]: Analyzing trace with hash -100052501, now seen corresponding path program 1 times [2022-11-16 11:26:43,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:43,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039212622] [2022-11-16 11:26:43,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:43,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:26:44,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:44,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039212622] [2022-11-16 11:26:44,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039212622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:44,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:44,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:26:44,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403764927] [2022-11-16 11:26:44,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:44,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:26:44,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:44,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:26:44,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:26:44,133 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 87 [2022-11-16 11:26:44,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 122 transitions, 632 flow. Second operand has 13 states, 13 states have (on average 50.76923076923077) internal successors, (660), 13 states have internal predecessors, (660), 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) [2022-11-16 11:26:44,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:44,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 87 [2022-11-16 11:26:44,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:44,834 INFO L130 PetriNetUnfolder]: 105/430 cut-off events. [2022-11-16 11:26:44,835 INFO L131 PetriNetUnfolder]: For 405/406 co-relation queries the response was YES. [2022-11-16 11:26:44,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 430 events. 105/430 cut-off events. For 405/406 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1750 event pairs, 33 based on Foata normal form. 7/431 useless extension candidates. Maximal degree in co-relation 894. Up to 89 conditions per place. [2022-11-16 11:26:44,839 INFO L137 encePairwiseOnDemand]: 72/87 looper letters, 46 selfloop transitions, 17 changer transitions 36/174 dead transitions. [2022-11-16 11:26:44,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 174 transitions, 994 flow [2022-11-16 11:26:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:26:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 11:26:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 928 transitions. [2022-11-16 11:26:44,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2022-11-16 11:26:44,843 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 928 transitions. [2022-11-16 11:26:44,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 928 transitions. [2022-11-16 11:26:44,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:44,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 928 transitions. [2022-11-16 11:26:44,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.588235294117645) internal successors, (928), 17 states have internal predecessors, (928), 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) [2022-11-16 11:26:44,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 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) [2022-11-16 11:26:44,851 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 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) [2022-11-16 11:26:44,851 INFO L175 Difference]: Start difference. First operand has 165 places, 122 transitions, 632 flow. Second operand 17 states and 928 transitions. [2022-11-16 11:26:44,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 174 transitions, 994 flow [2022-11-16 11:26:44,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 174 transitions, 913 flow, removed 12 selfloop flow, removed 14 redundant places. [2022-11-16 11:26:44,861 INFO L231 Difference]: Finished difference. Result has 173 places, 121 transitions, 624 flow [2022-11-16 11:26:44,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=624, PETRI_PLACES=173, PETRI_TRANSITIONS=121} [2022-11-16 11:26:44,862 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 87 predicate places. [2022-11-16 11:26:44,862 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 121 transitions, 624 flow [2022-11-16 11:26:44,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 50.76923076923077) internal successors, (660), 13 states have internal predecessors, (660), 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) [2022-11-16 11:26:44,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:44,863 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:44,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:26:44,864 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:44,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:44,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1398706057, now seen corresponding path program 1 times [2022-11-16 11:26:44,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:44,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896160139] [2022-11-16 11:26:44,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:44,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:26:45,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:45,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896160139] [2022-11-16 11:26:45,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896160139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:45,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:45,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:26:45,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341516970] [2022-11-16 11:26:45,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:45,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:26:45,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:45,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:26:45,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:26:45,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 87 [2022-11-16 11:26:45,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 121 transitions, 624 flow. Second operand has 13 states, 13 states have (on average 50.76923076923077) internal successors, (660), 13 states have internal predecessors, (660), 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) [2022-11-16 11:26:45,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:45,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 87 [2022-11-16 11:26:45,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:46,289 INFO L130 PetriNetUnfolder]: 75/373 cut-off events. [2022-11-16 11:26:46,289 INFO L131 PetriNetUnfolder]: For 462/468 co-relation queries the response was YES. [2022-11-16 11:26:46,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 373 events. 75/373 cut-off events. For 462/468 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1357 event pairs, 5 based on Foata normal form. 6/377 useless extension candidates. Maximal degree in co-relation 823. Up to 91 conditions per place. [2022-11-16 11:26:46,292 INFO L137 encePairwiseOnDemand]: 73/87 looper letters, 33 selfloop transitions, 10 changer transitions 33/148 dead transitions. [2022-11-16 11:26:46,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 148 transitions, 875 flow [2022-11-16 11:26:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:26:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 11:26:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 907 transitions. [2022-11-16 11:26:46,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6132521974306964 [2022-11-16 11:26:46,296 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 907 transitions. [2022-11-16 11:26:46,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 907 transitions. [2022-11-16 11:26:46,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:46,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 907 transitions. [2022-11-16 11:26:46,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 53.35294117647059) internal successors, (907), 17 states have internal predecessors, (907), 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) [2022-11-16 11:26:46,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 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) [2022-11-16 11:26:46,303 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 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) [2022-11-16 11:26:46,303 INFO L175 Difference]: Start difference. First operand has 173 places, 121 transitions, 624 flow. Second operand 17 states and 907 transitions. [2022-11-16 11:26:46,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 148 transitions, 875 flow [2022-11-16 11:26:46,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 148 transitions, 820 flow, removed 6 selfloop flow, removed 17 redundant places. [2022-11-16 11:26:46,312 INFO L231 Difference]: Finished difference. Result has 168 places, 102 transitions, 534 flow [2022-11-16 11:26:46,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=534, PETRI_PLACES=168, PETRI_TRANSITIONS=102} [2022-11-16 11:26:46,313 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 82 predicate places. [2022-11-16 11:26:46,313 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 102 transitions, 534 flow [2022-11-16 11:26:46,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 50.76923076923077) internal successors, (660), 13 states have internal predecessors, (660), 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) [2022-11-16 11:26:46,316 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:46,317 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:46,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:26:46,318 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:26:46,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:46,319 INFO L85 PathProgramCache]: Analyzing trace with hash 483211269, now seen corresponding path program 2 times [2022-11-16 11:26:46,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:46,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622174930] [2022-11-16 11:26:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:46,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:26:47,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:47,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622174930] [2022-11-16 11:26:47,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622174930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:47,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:47,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:26:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784850307] [2022-11-16 11:26:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:47,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:26:47,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:47,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:26:47,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:26:47,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 87 [2022-11-16 11:26:47,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 102 transitions, 534 flow. Second operand has 13 states, 13 states have (on average 52.61538461538461) internal successors, (684), 13 states have internal predecessors, (684), 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) [2022-11-16 11:26:47,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:47,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 87 [2022-11-16 11:26:47,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:47,455 INFO L130 PetriNetUnfolder]: 31/204 cut-off events. [2022-11-16 11:26:47,456 INFO L131 PetriNetUnfolder]: For 323/326 co-relation queries the response was YES. [2022-11-16 11:26:47,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 204 events. 31/204 cut-off events. For 323/326 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 321 event pairs, 11 based on Foata normal form. 6/203 useless extension candidates. Maximal degree in co-relation 549. Up to 39 conditions per place. [2022-11-16 11:26:47,457 INFO L137 encePairwiseOnDemand]: 77/87 looper letters, 0 selfloop transitions, 0 changer transitions 111/111 dead transitions. [2022-11-16 11:26:47,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 111 transitions, 642 flow [2022-11-16 11:26:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:26:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:26:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 597 transitions. [2022-11-16 11:26:47,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6238244514106583 [2022-11-16 11:26:47,463 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 597 transitions. [2022-11-16 11:26:47,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 597 transitions. [2022-11-16 11:26:47,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:47,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 597 transitions. [2022-11-16 11:26:47,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 54.27272727272727) internal successors, (597), 11 states have internal predecessors, (597), 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) [2022-11-16 11:26:47,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 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) [2022-11-16 11:26:47,490 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 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) [2022-11-16 11:26:47,491 INFO L175 Difference]: Start difference. First operand has 168 places, 102 transitions, 534 flow. Second operand 11 states and 597 transitions. [2022-11-16 11:26:47,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 111 transitions, 642 flow [2022-11-16 11:26:47,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 111 transitions, 588 flow, removed 6 selfloop flow, removed 19 redundant places. [2022-11-16 11:26:47,497 INFO L231 Difference]: Finished difference. Result has 137 places, 0 transitions, 0 flow [2022-11-16 11:26:47,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=137, PETRI_TRANSITIONS=0} [2022-11-16 11:26:47,498 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 51 predicate places. [2022-11-16 11:26:47,498 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 0 transitions, 0 flow [2022-11-16 11:26:47,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.61538461538461) internal successors, (684), 13 states have internal predecessors, (684), 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) [2022-11-16 11:26:47,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2022-11-16 11:26:47,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-11-16 11:26:47,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-11-16 11:26:47,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-11-16 11:26:47,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2022-11-16 11:26:47,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-11-16 11:26:47,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-11-16 11:26:47,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-11-16 11:26:47,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-11-16 11:26:47,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:26:47,504 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:47,512 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:26:47,512 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:26:47,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:26:47 BasicIcfg [2022-11-16 11:26:47,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:26:47,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:26:47,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:26:47,520 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:26:47,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:26:30" (3/4) ... [2022-11-16 11:26:47,524 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:26:47,531 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-16 11:26:47,537 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-16 11:26:47,538 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 11:26:47,538 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:26:47,584 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:26:47,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:26:47,585 INFO L158 Benchmark]: Toolchain (without parser) took 18839.04ms. Allocated memory was 134.2MB in the beginning and 247.5MB in the end (delta: 113.2MB). Free memory was 92.7MB in the beginning and 125.5MB in the end (delta: -32.7MB). Peak memory consumption was 81.1MB. Max. memory is 16.1GB. [2022-11-16 11:26:47,586 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 134.2MB. Free memory is still 111.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:26:47,586 INFO L158 Benchmark]: CACSL2BoogieTranslator took 946.12ms. Allocated memory is still 134.2MB. Free memory was 92.6MB in the beginning and 90.4MB in the end (delta: 2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:26:47,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.76ms. Allocated memory is still 134.2MB. Free memory was 90.4MB in the beginning and 88.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:26:47,587 INFO L158 Benchmark]: Boogie Preprocessor took 68.69ms. Allocated memory is still 134.2MB. Free memory was 88.1MB in the beginning and 86.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:26:47,588 INFO L158 Benchmark]: RCFGBuilder took 567.99ms. Allocated memory is still 134.2MB. Free memory was 86.2MB in the beginning and 72.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 11:26:47,588 INFO L158 Benchmark]: TraceAbstraction took 17095.62ms. Allocated memory was 134.2MB in the beginning and 247.5MB in the end (delta: 113.2MB). Free memory was 71.6MB in the beginning and 127.6MB in the end (delta: -56.0MB). Peak memory consumption was 60.1MB. Max. memory is 16.1GB. [2022-11-16 11:26:47,588 INFO L158 Benchmark]: Witness Printer took 64.42ms. Allocated memory is still 247.5MB. Free memory was 127.6MB in the beginning and 125.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:26:47,591 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 134.2MB. Free memory is still 111.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 946.12ms. Allocated memory is still 134.2MB. Free memory was 92.6MB in the beginning and 90.4MB in the end (delta: 2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.76ms. Allocated memory is still 134.2MB. Free memory was 90.4MB in the beginning and 88.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.69ms. Allocated memory is still 134.2MB. Free memory was 88.1MB in the beginning and 86.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 567.99ms. Allocated memory is still 134.2MB. Free memory was 86.2MB in the beginning and 72.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 17095.62ms. Allocated memory was 134.2MB in the beginning and 247.5MB in the end (delta: 113.2MB). Free memory was 71.6MB in the beginning and 127.6MB in the end (delta: -56.0MB). Peak memory consumption was 60.1MB. Max. memory is 16.1GB. * Witness Printer took 64.42ms. Allocated memory is still 247.5MB. Free memory was 127.6MB in the beginning and 125.5MB 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: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: 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 3 procedures, 112 locations, 9 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: 16.9s, OverallIterations: 15, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1651 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1651 mSDsluCounter, 935 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 59 IncrementalHoareTripleChecker+Unchecked, 729 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1409 IncrementalHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 206 mSDtfsCounter, 1409 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 810 GetRequests, 511 SyntacticMatches, 11 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1402 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=632occurred in iteration=12, InterpolantAutomatonStates: 197, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 1584 NumberOfCodeBlocks, 1514 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1749 ConstructedInterpolants, 5 QuantifiedInterpolants, 11928 SizeOfPredicates, 39 NumberOfNonLiveVariables, 620 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 2462/3182 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:26:47,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ea2217-3723-43f1-ac95-7f8e37f8f119/bin/uautomizer-tPACEb0tL8/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