./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN --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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- 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-6b4ec56 [2022-11-20 11:16:35,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:16:35,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:16:35,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:16:35,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:16:35,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:16:35,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:16:35,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:16:35,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:16:35,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:16:35,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:16:35,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:16:35,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:16:35,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:16:35,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:16:35,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:16:35,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:16:35,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:16:35,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:16:35,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:16:35,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:16:35,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:16:35,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:16:35,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:16:35,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:16:35,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:16:35,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:16:35,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:16:35,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:16:35,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:16:35,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:16:35,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:16:35,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:16:35,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:16:35,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:16:35,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:16:35,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:16:35,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:16:35,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:16:35,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:16:35,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:16:35,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:16:35,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:16:35,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:16:35,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:16:35,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:16:35,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:16:35,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:16:35,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:16:35,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:16:35,914 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:16:35,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:16:35,915 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:16:35,916 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:16:35,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:16:35,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:16:35,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:16:35,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:16:35,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:16:35,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:16:35,917 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:16:35,918 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:16:35,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:16:35,918 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:16:35,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:16:35,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:16:35,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:16:35,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:16:35,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:16:35,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:16:35,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:16:35,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:16:35,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:16:35,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:16:35,922 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:16:35,922 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:16:35,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:16:35,923 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_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2022-11-20 11:16:36,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:16:36,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:16:36,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:16:36,297 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:16:36,298 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:16:36,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2022-11-20 11:16:39,528 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:16:39,854 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:16:39,855 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2022-11-20 11:16:39,875 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/data/a3170b0ec/bfe502dbc0b54e228d2e32d8c3f0d33a/FLAG06fa47803 [2022-11-20 11:16:39,892 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/data/a3170b0ec/bfe502dbc0b54e228d2e32d8c3f0d33a [2022-11-20 11:16:39,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:16:39,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:16:39,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:16:39,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:16:39,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:16:39,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:16:39" (1/1) ... [2022-11-20 11:16:39,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474d6318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:39, skipping insertion in model container [2022-11-20 11:16:39,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:16:39" (1/1) ... [2022-11-20 11:16:39,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:16:39,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:16:40,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:16:40,516 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:16:40,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:16:40,681 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:16:40,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40 WrapperNode [2022-11-20 11:16:40,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:16:40,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:16:40,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:16:40,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:16:40,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40" (1/1) ... [2022-11-20 11:16:40,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40" (1/1) ... [2022-11-20 11:16:40,784 INFO L138 Inliner]: procedures = 262, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2022-11-20 11:16:40,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:16:40,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:16:40,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:16:40,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:16:40,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40" (1/1) ... [2022-11-20 11:16:40,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40" (1/1) ... [2022-11-20 11:16:40,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40" (1/1) ... [2022-11-20 11:16:40,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40" (1/1) ... [2022-11-20 11:16:40,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40" (1/1) ... [2022-11-20 11:16:40,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40" (1/1) ... [2022-11-20 11:16:40,848 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40" (1/1) ... [2022-11-20 11:16:40,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40" (1/1) ... [2022-11-20 11:16:40,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:16:40,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:16:40,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:16:40,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:16:40,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40" (1/1) ... [2022-11-20 11:16:40,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:16:40,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:16:40,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:16:40,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:16:40,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:16:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:16:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:16:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:16:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:16:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:16:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 11:16:40,966 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 11:16:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:16:40,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:16:40,969 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:16:41,149 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:16:41,152 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:16:41,480 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:16:41,489 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:16:41,489 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:16:41,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:16:41 BoogieIcfgContainer [2022-11-20 11:16:41,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:16:41,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:16:41,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:16:41,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:16:41,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:16:39" (1/3) ... [2022-11-20 11:16:41,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e5de92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:16:41, skipping insertion in model container [2022-11-20 11:16:41,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:40" (2/3) ... [2022-11-20 11:16:41,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e5de92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:16:41, skipping insertion in model container [2022-11-20 11:16:41,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:16:41" (3/3) ... [2022-11-20 11:16:41,504 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2022-11-20 11:16:41,515 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:16:41,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:16:41,529 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-20 11:16:41,529 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:16:41,611 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:16:41,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 98 transitions, 201 flow [2022-11-20 11:16:41,779 INFO L130 PetriNetUnfolder]: 6/97 cut-off events. [2022-11-20 11:16:41,780 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:16:41,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 97 events. 6/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 142 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-20 11:16:41,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 98 transitions, 201 flow [2022-11-20 11:16:41,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 97 transitions, 197 flow [2022-11-20 11:16:41,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:16:41,832 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;@649620c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:16:41,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-20 11:16:41,856 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2022-11-20 11:16:41,856 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:16:41,857 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:41,857 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:16:41,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:41,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:41,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1598082456, now seen corresponding path program 1 times [2022-11-20 11:16:41,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:41,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14783487] [2022-11-20 11:16:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:41,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:42,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:42,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14783487] [2022-11-20 11:16:42,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14783487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:42,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:42,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404039269] [2022-11-20 11:16:42,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:42,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:16:42,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:42,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:16:42,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:16:42,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-20 11:16:42,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 97 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:42,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:42,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-20 11:16:42,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:42,478 INFO L130 PetriNetUnfolder]: 3/101 cut-off events. [2022-11-20 11:16:42,478 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:16:42,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 101 events. 3/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 2/90 useless extension candidates. Maximal degree in co-relation 66. Up to 14 conditions per place. [2022-11-20 11:16:42,482 INFO L137 encePairwiseOnDemand]: 88/98 looper letters, 16 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2022-11-20 11:16:42,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 101 transitions, 245 flow [2022-11-20 11:16:42,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:16:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:16:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2022-11-20 11:16:42,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8918367346938776 [2022-11-20 11:16:42,501 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2022-11-20 11:16:42,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2022-11-20 11:16:42,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:42,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2022-11-20 11:16:42,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:42,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:42,520 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:42,522 INFO L175 Difference]: Start difference. First operand has 95 places, 97 transitions, 197 flow. Second operand 5 states and 437 transitions. [2022-11-20 11:16:42,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 101 transitions, 245 flow [2022-11-20 11:16:42,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 101 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:16:42,545 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 222 flow [2022-11-20 11:16:42,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2022-11-20 11:16:42,566 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 6 predicate places. [2022-11-20 11:16:42,567 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 222 flow [2022-11-20 11:16:42,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:42,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:42,568 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] [2022-11-20 11:16:42,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:16:42,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:42,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:42,569 INFO L85 PathProgramCache]: Analyzing trace with hash -532368849, now seen corresponding path program 1 times [2022-11-20 11:16:42,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:42,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910531363] [2022-11-20 11:16:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:42,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:16:42,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:42,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910531363] [2022-11-20 11:16:42,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910531363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:42,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:42,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:42,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195512125] [2022-11-20 11:16:42,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:42,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:16:42,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:42,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:16:42,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:16:42,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-20 11:16:42,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:42,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:42,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-20 11:16:42,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:42,795 INFO L130 PetriNetUnfolder]: 3/100 cut-off events. [2022-11-20 11:16:42,795 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:16:42,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 100 events. 3/100 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 98. Up to 7 conditions per place. [2022-11-20 11:16:42,797 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 8 selfloop transitions, 8 changer transitions 0/97 dead transitions. [2022-11-20 11:16:42,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 97 transitions, 252 flow [2022-11-20 11:16:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:16:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:16:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2022-11-20 11:16:42,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8653061224489796 [2022-11-20 11:16:42,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2022-11-20 11:16:42,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2022-11-20 11:16:42,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:42,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2022-11-20 11:16:42,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:42,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:42,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:42,819 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 222 flow. Second operand 5 states and 424 transitions. [2022-11-20 11:16:42,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 97 transitions, 252 flow [2022-11-20 11:16:42,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 97 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:16:42,824 INFO L231 Difference]: Finished difference. Result has 104 places, 97 transitions, 240 flow [2022-11-20 11:16:42,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=104, PETRI_TRANSITIONS=97} [2022-11-20 11:16:42,825 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 9 predicate places. [2022-11-20 11:16:42,826 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 97 transitions, 240 flow [2022-11-20 11:16:42,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:42,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:42,827 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] [2022-11-20 11:16:42,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:16:42,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:42,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:42,830 INFO L85 PathProgramCache]: Analyzing trace with hash 676435062, now seen corresponding path program 1 times [2022-11-20 11:16:42,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:42,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985417427] [2022-11-20 11:16:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:42,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:43,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:43,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985417427] [2022-11-20 11:16:43,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985417427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:16:43,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327533701] [2022-11-20 11:16:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:43,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:43,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:16:43,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:16:43,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:16:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:43,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:16:43,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:16:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:43,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:16:43,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327533701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:43,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:16:43,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:16:43,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713169322] [2022-11-20 11:16:43,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:43,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:16:43,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:43,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:16:43,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:16:43,277 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-20 11:16:43,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 97 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:43,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:43,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-20 11:16:43,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:43,371 INFO L130 PetriNetUnfolder]: 3/99 cut-off events. [2022-11-20 11:16:43,371 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-20 11:16:43,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 99 events. 3/99 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 96. Up to 6 conditions per place. [2022-11-20 11:16:43,373 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 12 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2022-11-20 11:16:43,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 99 transitions, 278 flow [2022-11-20 11:16:43,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:16:43,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:16:43,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 593 transitions. [2022-11-20 11:16:43,376 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8644314868804664 [2022-11-20 11:16:43,377 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 593 transitions. [2022-11-20 11:16:43,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 593 transitions. [2022-11-20 11:16:43,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:43,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 593 transitions. [2022-11-20 11:16:43,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.71428571428571) internal successors, (593), 7 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:43,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:43,382 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:43,383 INFO L175 Difference]: Start difference. First operand has 104 places, 97 transitions, 240 flow. Second operand 7 states and 593 transitions. [2022-11-20 11:16:43,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 99 transitions, 278 flow [2022-11-20 11:16:43,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 99 transitions, 266 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:16:43,387 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 236 flow [2022-11-20 11:16:43,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2022-11-20 11:16:43,388 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 11 predicate places. [2022-11-20 11:16:43,388 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 236 flow [2022-11-20 11:16:43,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:43,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:43,389 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:16:43,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:16:43,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:43,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:43,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:43,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2098150413, now seen corresponding path program 1 times [2022-11-20 11:16:43,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:43,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15373811] [2022-11-20 11:16:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:43,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:43,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:43,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15373811] [2022-11-20 11:16:43,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15373811] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:16:43,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104812960] [2022-11-20 11:16:43,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:43,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:43,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:16:43,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:16:43,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:16:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:43,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:16:43,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:16:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:43,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:16:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:43,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104812960] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:16:43,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:16:43,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:16:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931885450] [2022-11-20 11:16:43,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:16:43,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:16:43,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:16:43,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:16:43,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-20 11:16:43,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 96 transitions, 236 flow. Second operand has 10 states, 10 states have (on average 84.7) internal successors, (847), 10 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:43,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:43,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-20 11:16:43,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:44,088 INFO L130 PetriNetUnfolder]: 3/107 cut-off events. [2022-11-20 11:16:44,088 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-20 11:16:44,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 107 events. 3/107 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 121 event pairs, 0 based on Foata normal form. 2/99 useless extension candidates. Maximal degree in co-relation 86. Up to 7 conditions per place. [2022-11-20 11:16:44,090 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 17 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2022-11-20 11:16:44,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 107 transitions, 326 flow [2022-11-20 11:16:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:16:44,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:16:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 766 transitions. [2022-11-20 11:16:44,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8684807256235828 [2022-11-20 11:16:44,094 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 766 transitions. [2022-11-20 11:16:44,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 766 transitions. [2022-11-20 11:16:44,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:44,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 766 transitions. [2022-11-20 11:16:44,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.11111111111111) internal successors, (766), 9 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:44,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:44,102 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:44,102 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 236 flow. Second operand 9 states and 766 transitions. [2022-11-20 11:16:44,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 107 transitions, 326 flow [2022-11-20 11:16:44,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 313 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-20 11:16:44,106 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 283 flow [2022-11-20 11:16:44,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=283, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2022-11-20 11:16:44,108 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 18 predicate places. [2022-11-20 11:16:44,109 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 283 flow [2022-11-20 11:16:44,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.7) internal successors, (847), 10 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:44,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:44,111 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] [2022-11-20 11:16:44,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:16:44,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:44,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:44,320 INFO L85 PathProgramCache]: Analyzing trace with hash 234053075, now seen corresponding path program 2 times [2022-11-20 11:16:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:44,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761978906] [2022-11-20 11:16:44,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:44,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:44,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:44,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761978906] [2022-11-20 11:16:44,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761978906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:16:44,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641322822] [2022-11-20 11:16:44,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:16:44,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:44,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:16:44,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:16:44,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:16:44,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:16:44,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:16:44,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:16:44,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:16:44,688 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 [2022-11-20 11:16:45,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:16:45,095 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 [2022-11-20 11:16:45,230 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 14 treesize of output 10 [2022-11-20 11:16:45,285 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:16:45,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:16:45,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641322822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:45,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:16:45,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 18 [2022-11-20 11:16:45,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129523395] [2022-11-20 11:16:45,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:45,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:16:45,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:45,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:16:45,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:16:45,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:16:45,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 283 flow. Second operand has 11 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:45,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:45,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:16:45,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:45,886 INFO L130 PetriNetUnfolder]: 170/685 cut-off events. [2022-11-20 11:16:45,887 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-20 11:16:45,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 685 events. 170/685 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4032 event pairs, 0 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 989. Up to 198 conditions per place. [2022-11-20 11:16:45,898 INFO L137 encePairwiseOnDemand]: 83/98 looper letters, 51 selfloop transitions, 27 changer transitions 0/151 dead transitions. [2022-11-20 11:16:45,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 151 transitions, 541 flow [2022-11-20 11:16:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:16:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:16:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 963 transitions. [2022-11-20 11:16:45,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7558869701726845 [2022-11-20 11:16:45,903 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 963 transitions. [2022-11-20 11:16:45,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 963 transitions. [2022-11-20 11:16:45,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:45,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 963 transitions. [2022-11-20 11:16:45,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.07692307692308) internal successors, (963), 13 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) [2022-11-20 11:16:45,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:45,913 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:45,914 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 283 flow. Second operand 13 states and 963 transitions. [2022-11-20 11:16:45,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 151 transitions, 541 flow [2022-11-20 11:16:45,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 151 transitions, 527 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-20 11:16:45,922 INFO L231 Difference]: Finished difference. Result has 129 places, 127 transitions, 450 flow [2022-11-20 11:16:45,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=450, PETRI_PLACES=129, PETRI_TRANSITIONS=127} [2022-11-20 11:16:45,923 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 34 predicate places. [2022-11-20 11:16:45,923 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 127 transitions, 450 flow [2022-11-20 11:16:45,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:45,924 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:45,924 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] [2022-11-20 11:16:45,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:16:46,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:46,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:46,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:46,126 INFO L85 PathProgramCache]: Analyzing trace with hash 769616982, now seen corresponding path program 1 times [2022-11-20 11:16:46,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:46,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702091104] [2022-11-20 11:16:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:46,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,286 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:46,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:46,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702091104] [2022-11-20 11:16:46,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702091104] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:16:46,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440140243] [2022-11-20 11:16:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:46,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:46,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:16:46,289 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:16:46,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:16:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:16:46,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:16:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:46,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:16:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:46,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440140243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:16:46,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:16:46,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:16:46,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777031767] [2022-11-20 11:16:46,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:16:46,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:16:46,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:46,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:16:46,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:16:46,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-20 11:16:46,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 127 transitions, 450 flow. Second operand has 18 states, 18 states have (on average 85.05555555555556) internal successors, (1531), 18 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:46,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:46,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-20 11:16:46,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:47,049 INFO L130 PetriNetUnfolder]: 38/486 cut-off events. [2022-11-20 11:16:47,049 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-20 11:16:47,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 486 events. 38/486 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2390 event pairs, 3 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 696. Up to 33 conditions per place. [2022-11-20 11:16:47,054 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 33 selfloop transitions, 21 changer transitions 0/162 dead transitions. [2022-11-20 11:16:47,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 162 transitions, 720 flow [2022-11-20 11:16:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:16:47,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:16:47,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1780 transitions. [2022-11-20 11:16:47,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8649173955296404 [2022-11-20 11:16:47,062 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1780 transitions. [2022-11-20 11:16:47,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1780 transitions. [2022-11-20 11:16:47,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:47,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1780 transitions. [2022-11-20 11:16:47,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 84.76190476190476) internal successors, (1780), 21 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:47,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 98.0) internal successors, (2156), 22 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:47,077 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 98.0) internal successors, (2156), 22 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:47,078 INFO L175 Difference]: Start difference. First operand has 129 places, 127 transitions, 450 flow. Second operand 21 states and 1780 transitions. [2022-11-20 11:16:47,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 162 transitions, 720 flow [2022-11-20 11:16:47,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 162 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:16:47,087 INFO L231 Difference]: Finished difference. Result has 153 places, 140 transitions, 612 flow [2022-11-20 11:16:47,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=612, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2022-11-20 11:16:47,090 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 58 predicate places. [2022-11-20 11:16:47,090 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 140 transitions, 612 flow [2022-11-20 11:16:47,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 85.05555555555556) internal successors, (1531), 18 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:47,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:47,092 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] [2022-11-20 11:16:47,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 11:16:47,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:47,298 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash -916830186, now seen corresponding path program 2 times [2022-11-20 11:16:47,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:47,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036383224] [2022-11-20 11:16:47,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:47,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:47,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:47,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036383224] [2022-11-20 11:16:47,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036383224] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:16:47,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520046237] [2022-11-20 11:16:47,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:16:47,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:47,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:16:47,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:16:47,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:16:47,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:16:47,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:16:47,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:16:47,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:16:47,861 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 [2022-11-20 11:16:48,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:16:48,354 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 [2022-11-20 11:16:48,495 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 14 treesize of output 10 [2022-11-20 11:16:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-20 11:16:48,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:16:48,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520046237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:48,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:16:48,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 26 [2022-11-20 11:16:48,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917595224] [2022-11-20 11:16:48,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:48,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:16:48,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:48,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:16:48,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:16:48,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:16:48,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 140 transitions, 612 flow. Second operand has 11 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:48,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:48,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:16:48,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:49,081 INFO L130 PetriNetUnfolder]: 183/932 cut-off events. [2022-11-20 11:16:49,082 INFO L131 PetriNetUnfolder]: For 531/543 co-relation queries the response was YES. [2022-11-20 11:16:49,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 932 events. 183/932 cut-off events. For 531/543 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6053 event pairs, 34 based on Foata normal form. 10/811 useless extension candidates. Maximal degree in co-relation 1710. Up to 271 conditions per place. [2022-11-20 11:16:49,092 INFO L137 encePairwiseOnDemand]: 84/98 looper letters, 60 selfloop transitions, 26 changer transitions 0/180 dead transitions. [2022-11-20 11:16:49,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 180 transitions, 938 flow [2022-11-20 11:16:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:16:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:16:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 747 transitions. [2022-11-20 11:16:49,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7622448979591837 [2022-11-20 11:16:49,096 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 747 transitions. [2022-11-20 11:16:49,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 747 transitions. [2022-11-20 11:16:49,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:49,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 747 transitions. [2022-11-20 11:16:49,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.7) internal successors, (747), 10 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:49,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 98.0) internal successors, (1078), 11 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:49,103 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 98.0) internal successors, (1078), 11 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:49,103 INFO L175 Difference]: Start difference. First operand has 153 places, 140 transitions, 612 flow. Second operand 10 states and 747 transitions. [2022-11-20 11:16:49,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 180 transitions, 938 flow [2022-11-20 11:16:49,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 180 transitions, 894 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-11-20 11:16:49,112 INFO L231 Difference]: Finished difference. Result has 160 places, 158 transitions, 727 flow [2022-11-20 11:16:49,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=727, PETRI_PLACES=160, PETRI_TRANSITIONS=158} [2022-11-20 11:16:49,114 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 65 predicate places. [2022-11-20 11:16:49,114 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 158 transitions, 727 flow [2022-11-20 11:16:49,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:49,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:49,115 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] [2022-11-20 11:16:49,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:16:49,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:49,327 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:49,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2074543649, now seen corresponding path program 1 times [2022-11-20 11:16:49,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:49,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681886474] [2022-11-20 11:16:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:49,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:49,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:49,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681886474] [2022-11-20 11:16:49,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681886474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:16:49,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338333224] [2022-11-20 11:16:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:49,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:49,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:16:49,736 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:16:49,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:16:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:49,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:16:49,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:16:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:49,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:16:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:50,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338333224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:16:50,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:16:50,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 11:16:50,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975464963] [2022-11-20 11:16:50,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:16:50,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:16:50,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:50,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:16:50,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:16:50,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-20 11:16:50,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 158 transitions, 727 flow. Second operand has 23 states, 23 states have (on average 85.30434782608695) internal successors, (1962), 23 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:50,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:50,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-20 11:16:50,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:50,850 INFO L130 PetriNetUnfolder]: 65/701 cut-off events. [2022-11-20 11:16:50,850 INFO L131 PetriNetUnfolder]: For 305/306 co-relation queries the response was YES. [2022-11-20 11:16:50,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 701 events. 65/701 cut-off events. For 305/306 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3999 event pairs, 4 based on Foata normal form. 4/611 useless extension candidates. Maximal degree in co-relation 1145. Up to 43 conditions per place. [2022-11-20 11:16:50,858 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 45 selfloop transitions, 30 changer transitions 0/201 dead transitions. [2022-11-20 11:16:50,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 201 transitions, 1075 flow [2022-11-20 11:16:50,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:16:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:16:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2538 transitions. [2022-11-20 11:16:50,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.863265306122449 [2022-11-20 11:16:50,867 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2538 transitions. [2022-11-20 11:16:50,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2538 transitions. [2022-11-20 11:16:50,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:50,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2538 transitions. [2022-11-20 11:16:50,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 84.6) internal successors, (2538), 30 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:50,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 98.0) internal successors, (3038), 31 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:50,889 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 98.0) internal successors, (3038), 31 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:50,889 INFO L175 Difference]: Start difference. First operand has 160 places, 158 transitions, 727 flow. Second operand 30 states and 2538 transitions. [2022-11-20 11:16:50,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 201 transitions, 1075 flow [2022-11-20 11:16:50,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 201 transitions, 1073 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:16:50,899 INFO L231 Difference]: Finished difference. Result has 192 places, 168 transitions, 891 flow [2022-11-20 11:16:50,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=891, PETRI_PLACES=192, PETRI_TRANSITIONS=168} [2022-11-20 11:16:50,904 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 97 predicate places. [2022-11-20 11:16:50,904 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 168 transitions, 891 flow [2022-11-20 11:16:50,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 85.30434782608695) internal successors, (1962), 23 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:50,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:50,906 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] [2022-11-20 11:16:50,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:16:51,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c65ba1f-8a7a-413e-8845-f5dc19bade16/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:51,113 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:51,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:51,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1668173254, now seen corresponding path program 2 times [2022-11-20 11:16:51,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:51,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695343275] [2022-11-20 11:16:51,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:51,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:16:51,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:51,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695343275] [2022-11-20 11:16:51,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695343275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:51,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:51,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:16:51,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189862757] [2022-11-20 11:16:51,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:51,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:16:51,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:51,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:16:51,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:16:51,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:16:51,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 168 transitions, 891 flow. Second operand has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:51,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:51,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:16:51,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:52,314 INFO L130 PetriNetUnfolder]: 283/1258 cut-off events. [2022-11-20 11:16:52,314 INFO L131 PetriNetUnfolder]: For 1057/1081 co-relation queries the response was YES. [2022-11-20 11:16:52,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2967 conditions, 1258 events. 283/1258 cut-off events. For 1057/1081 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8499 event pairs, 38 based on Foata normal form. 14/1118 useless extension candidates. Maximal degree in co-relation 2673. Up to 412 conditions per place. [2022-11-20 11:16:52,326 INFO L137 encePairwiseOnDemand]: 83/98 looper letters, 75 selfloop transitions, 40 changer transitions 0/216 dead transitions. [2022-11-20 11:16:52,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 216 transitions, 1347 flow [2022-11-20 11:16:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:16:52,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 11:16:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1253 transitions. [2022-11-20 11:16:52,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7521008403361344 [2022-11-20 11:16:52,331 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1253 transitions. [2022-11-20 11:16:52,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1253 transitions. [2022-11-20 11:16:52,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:52,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1253 transitions. [2022-11-20 11:16:52,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.70588235294117) internal successors, (1253), 17 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:52,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 98.0) internal successors, (1764), 18 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:52,341 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 98.0) internal successors, (1764), 18 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:52,341 INFO L175 Difference]: Start difference. First operand has 192 places, 168 transitions, 891 flow. Second operand 17 states and 1253 transitions. [2022-11-20 11:16:52,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 216 transitions, 1347 flow [2022-11-20 11:16:52,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 216 transitions, 1301 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-20 11:16:52,356 INFO L231 Difference]: Finished difference. Result has 195 places, 177 transitions, 1022 flow [2022-11-20 11:16:52,357 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1022, PETRI_PLACES=195, PETRI_TRANSITIONS=177} [2022-11-20 11:16:52,357 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 100 predicate places. [2022-11-20 11:16:52,358 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 177 transitions, 1022 flow [2022-11-20 11:16:52,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:52,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:52,359 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] [2022-11-20 11:16:52,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:16:52,359 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:52,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:52,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1090785083, now seen corresponding path program 1 times [2022-11-20 11:16:52,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:52,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844111223] [2022-11-20 11:16:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:52,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:16:52,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:52,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844111223] [2022-11-20 11:16:52,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844111223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:52,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:52,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:16:52,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960457641] [2022-11-20 11:16:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:52,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:16:52,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:16:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:16:52,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:16:52,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 177 transitions, 1022 flow. Second operand has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:52,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:52,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:16:52,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:53,451 INFO L130 PetriNetUnfolder]: 266/1314 cut-off events. [2022-11-20 11:16:53,451 INFO L131 PetriNetUnfolder]: For 1575/1640 co-relation queries the response was YES. [2022-11-20 11:16:53,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3272 conditions, 1314 events. 266/1314 cut-off events. For 1575/1640 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9115 event pairs, 37 based on Foata normal form. 20/1196 useless extension candidates. Maximal degree in co-relation 3037. Up to 401 conditions per place. [2022-11-20 11:16:53,464 INFO L137 encePairwiseOnDemand]: 83/98 looper letters, 63 selfloop transitions, 36 changer transitions 0/206 dead transitions. [2022-11-20 11:16:53,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 206 transitions, 1390 flow [2022-11-20 11:16:53,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:16:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:16:53,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 959 transitions. [2022-11-20 11:16:53,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7527472527472527 [2022-11-20 11:16:53,468 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 959 transitions. [2022-11-20 11:16:53,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 959 transitions. [2022-11-20 11:16:53,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:53,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 959 transitions. [2022-11-20 11:16:53,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.76923076923077) internal successors, (959), 13 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:53,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:53,474 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:53,474 INFO L175 Difference]: Start difference. First operand has 195 places, 177 transitions, 1022 flow. Second operand 13 states and 959 transitions. [2022-11-20 11:16:53,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 206 transitions, 1390 flow [2022-11-20 11:16:53,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 206 transitions, 1348 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 11:16:53,490 INFO L231 Difference]: Finished difference. Result has 203 places, 181 transitions, 1116 flow [2022-11-20 11:16:53,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1116, PETRI_PLACES=203, PETRI_TRANSITIONS=181} [2022-11-20 11:16:53,491 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 108 predicate places. [2022-11-20 11:16:53,492 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 181 transitions, 1116 flow [2022-11-20 11:16:53,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:53,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:53,493 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] [2022-11-20 11:16:53,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:16:53,493 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:53,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:53,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1367802321, now seen corresponding path program 1 times [2022-11-20 11:16:53,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:53,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616328801] [2022-11-20 11:16:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:53,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:16:53,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:53,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616328801] [2022-11-20 11:16:53,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616328801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:53,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:53,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:53,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701804032] [2022-11-20 11:16:53,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:53,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:16:53,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:53,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:16:53,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:16:53,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-20 11:16:53,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 181 transitions, 1116 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:53,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:53,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-20 11:16:53,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:53,940 INFO L130 PetriNetUnfolder]: 109/1140 cut-off events. [2022-11-20 11:16:53,940 INFO L131 PetriNetUnfolder]: For 960/984 co-relation queries the response was YES. [2022-11-20 11:16:53,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 1140 events. 109/1140 cut-off events. For 960/984 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7237 event pairs, 17 based on Foata normal form. 9/1062 useless extension candidates. Maximal degree in co-relation 2236. Up to 119 conditions per place. [2022-11-20 11:16:53,950 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 19 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2022-11-20 11:16:53,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 188 transitions, 1180 flow [2022-11-20 11:16:53,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:16:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:16:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2022-11-20 11:16:53,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8836734693877552 [2022-11-20 11:16:53,952 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2022-11-20 11:16:53,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2022-11-20 11:16:53,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:53,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2022-11-20 11:16:53,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:53,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:53,956 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:53,956 INFO L175 Difference]: Start difference. First operand has 203 places, 181 transitions, 1116 flow. Second operand 5 states and 433 transitions. [2022-11-20 11:16:53,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 188 transitions, 1180 flow [2022-11-20 11:16:53,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 188 transitions, 1145 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:16:53,971 INFO L231 Difference]: Finished difference. Result has 204 places, 184 transitions, 1113 flow [2022-11-20 11:16:53,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1113, PETRI_PLACES=204, PETRI_TRANSITIONS=184} [2022-11-20 11:16:53,973 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 109 predicate places. [2022-11-20 11:16:53,973 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 184 transitions, 1113 flow [2022-11-20 11:16:53,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:53,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:53,974 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] [2022-11-20 11:16:53,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:16:53,975 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:53,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:53,975 INFO L85 PathProgramCache]: Analyzing trace with hash 175245975, now seen corresponding path program 1 times [2022-11-20 11:16:53,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:53,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847844867] [2022-11-20 11:16:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:53,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:16:54,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:54,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847844867] [2022-11-20 11:16:54,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847844867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:54,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:54,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:54,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137670966] [2022-11-20 11:16:54,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:54,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:16:54,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:54,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:16:54,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:16:54,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 98 [2022-11-20 11:16:54,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 184 transitions, 1113 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:54,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:54,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 98 [2022-11-20 11:16:54,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:54,424 INFO L130 PetriNetUnfolder]: 105/1163 cut-off events. [2022-11-20 11:16:54,424 INFO L131 PetriNetUnfolder]: For 909/926 co-relation queries the response was YES. [2022-11-20 11:16:54,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 1163 events. 105/1163 cut-off events. For 909/926 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7352 event pairs, 21 based on Foata normal form. 6/1116 useless extension candidates. Maximal degree in co-relation 2323. Up to 145 conditions per place. [2022-11-20 11:16:54,437 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 19 selfloop transitions, 4 changer transitions 0/177 dead transitions. [2022-11-20 11:16:54,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 177 transitions, 1063 flow [2022-11-20 11:16:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:16:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:16:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 429 transitions. [2022-11-20 11:16:54,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755102040816326 [2022-11-20 11:16:54,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 429 transitions. [2022-11-20 11:16:54,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 429 transitions. [2022-11-20 11:16:54,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:54,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 429 transitions. [2022-11-20 11:16:54,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:54,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:54,443 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:54,443 INFO L175 Difference]: Start difference. First operand has 204 places, 184 transitions, 1113 flow. Second operand 5 states and 429 transitions. [2022-11-20 11:16:54,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 177 transitions, 1063 flow [2022-11-20 11:16:54,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 177 transitions, 1041 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-11-20 11:16:54,460 INFO L231 Difference]: Finished difference. Result has 199 places, 173 transitions, 1009 flow [2022-11-20 11:16:54,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1009, PETRI_PLACES=199, PETRI_TRANSITIONS=173} [2022-11-20 11:16:54,462 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 104 predicate places. [2022-11-20 11:16:54,462 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 173 transitions, 1009 flow [2022-11-20 11:16:54,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:54,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:54,463 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] [2022-11-20 11:16:54,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:16:54,464 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:54,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:54,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1831747693, now seen corresponding path program 1 times [2022-11-20 11:16:54,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:54,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401638292] [2022-11-20 11:16:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:54,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:16:55,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:55,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401638292] [2022-11-20 11:16:55,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401638292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:55,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:55,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:16:55,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358411921] [2022-11-20 11:16:55,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:55,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:16:55,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:55,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:16:55,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:16:55,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-20 11:16:55,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 173 transitions, 1009 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:55,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:55,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-20 11:16:55,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:16:57,784 INFO L130 PetriNetUnfolder]: 1585/4638 cut-off events. [2022-11-20 11:16:57,784 INFO L131 PetriNetUnfolder]: For 4212/4212 co-relation queries the response was YES. [2022-11-20 11:16:57,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12516 conditions, 4638 events. 1585/4638 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 34872 event pairs, 602 based on Foata normal form. 28/4623 useless extension candidates. Maximal degree in co-relation 12235. Up to 2036 conditions per place. [2022-11-20 11:16:57,830 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 216 selfloop transitions, 58 changer transitions 0/365 dead transitions. [2022-11-20 11:16:57,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 365 transitions, 2476 flow [2022-11-20 11:16:57,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 11:16:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 11:16:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1531 transitions. [2022-11-20 11:16:57,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6792369121561668 [2022-11-20 11:16:57,834 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1531 transitions. [2022-11-20 11:16:57,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1531 transitions. [2022-11-20 11:16:57,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:16:57,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1531 transitions. [2022-11-20 11:16:57,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 66.56521739130434) internal successors, (1531), 23 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:57,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 98.0) internal successors, (2352), 24 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:57,854 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 98.0) internal successors, (2352), 24 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:57,860 INFO L175 Difference]: Start difference. First operand has 199 places, 173 transitions, 1009 flow. Second operand 23 states and 1531 transitions. [2022-11-20 11:16:57,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 365 transitions, 2476 flow [2022-11-20 11:16:57,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 365 transitions, 2474 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:16:57,897 INFO L231 Difference]: Finished difference. Result has 233 places, 206 transitions, 1491 flow [2022-11-20 11:16:57,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1491, PETRI_PLACES=233, PETRI_TRANSITIONS=206} [2022-11-20 11:16:57,899 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 138 predicate places. [2022-11-20 11:16:57,899 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 206 transitions, 1491 flow [2022-11-20 11:16:57,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:57,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:16:57,900 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] [2022-11-20 11:16:57,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:16:57,901 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:16:57,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:57,902 INFO L85 PathProgramCache]: Analyzing trace with hash 849732213, now seen corresponding path program 2 times [2022-11-20 11:16:57,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:57,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423836806] [2022-11-20 11:16:57,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:57,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:58,816 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:16:58,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:58,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423836806] [2022-11-20 11:16:58,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423836806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:58,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:58,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:16:58,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993085815] [2022-11-20 11:16:58,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:58,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:16:58,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:58,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:16:58,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:16:58,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-20 11:16:58,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 206 transitions, 1491 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:58,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:58,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-20 11:16:58,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:17:02,318 INFO L130 PetriNetUnfolder]: 1915/5681 cut-off events. [2022-11-20 11:17:02,319 INFO L131 PetriNetUnfolder]: For 11160/11160 co-relation queries the response was YES. [2022-11-20 11:17:02,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17198 conditions, 5681 events. 1915/5681 cut-off events. For 11160/11160 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 44550 event pairs, 525 based on Foata normal form. 28/5678 useless extension candidates. Maximal degree in co-relation 16900. Up to 2078 conditions per place. [2022-11-20 11:17:02,392 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 254 selfloop transitions, 102 changer transitions 0/447 dead transitions. [2022-11-20 11:17:02,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 447 transitions, 3690 flow [2022-11-20 11:17:02,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:17:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:17:02,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2015 transitions. [2022-11-20 11:17:02,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2022-11-20 11:17:02,483 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2015 transitions. [2022-11-20 11:17:02,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2015 transitions. [2022-11-20 11:17:02,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:17:02,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2015 transitions. [2022-11-20 11:17:02,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 65.0) internal successors, (2015), 31 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:02,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 98.0) internal successors, (3136), 32 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:02,494 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 98.0) internal successors, (3136), 32 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:02,494 INFO L175 Difference]: Start difference. First operand has 233 places, 206 transitions, 1491 flow. Second operand 31 states and 2015 transitions. [2022-11-20 11:17:02,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 447 transitions, 3690 flow [2022-11-20 11:17:02,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 447 transitions, 3528 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-11-20 11:17:02,585 INFO L231 Difference]: Finished difference. Result has 274 places, 262 transitions, 2389 flow [2022-11-20 11:17:02,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2389, PETRI_PLACES=274, PETRI_TRANSITIONS=262} [2022-11-20 11:17:02,586 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 179 predicate places. [2022-11-20 11:17:02,586 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 262 transitions, 2389 flow [2022-11-20 11:17:02,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:02,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:17:02,587 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] [2022-11-20 11:17:02,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:17:02,588 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:17:02,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:02,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1227308000, now seen corresponding path program 1 times [2022-11-20 11:17:02,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:02,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828732185] [2022-11-20 11:17:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:02,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:17:03,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:03,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828732185] [2022-11-20 11:17:03,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828732185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:03,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:03,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:17:03,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564266466] [2022-11-20 11:17:03,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:03,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:17:03,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:03,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:17:03,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:17:03,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-20 11:17:03,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 262 transitions, 2389 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:03,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:17:03,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-20 11:17:03,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:17:07,079 INFO L130 PetriNetUnfolder]: 2273/6576 cut-off events. [2022-11-20 11:17:07,079 INFO L131 PetriNetUnfolder]: For 22140/22140 co-relation queries the response was YES. [2022-11-20 11:17:07,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22219 conditions, 6576 events. 2273/6576 cut-off events. For 22140/22140 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 53986 event pairs, 395 based on Foata normal form. 32/6568 useless extension candidates. Maximal degree in co-relation 21900. Up to 2765 conditions per place. [2022-11-20 11:17:07,147 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 324 selfloop transitions, 127 changer transitions 0/542 dead transitions. [2022-11-20 11:17:07,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 542 transitions, 5450 flow [2022-11-20 11:17:07,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:17:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:17:07,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2027 transitions. [2022-11-20 11:17:07,152 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6672152732060567 [2022-11-20 11:17:07,152 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2027 transitions. [2022-11-20 11:17:07,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2027 transitions. [2022-11-20 11:17:07,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:17:07,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2027 transitions. [2022-11-20 11:17:07,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 65.38709677419355) internal successors, (2027), 31 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:07,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 98.0) internal successors, (3136), 32 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:07,163 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 98.0) internal successors, (3136), 32 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:07,163 INFO L175 Difference]: Start difference. First operand has 274 places, 262 transitions, 2389 flow. Second operand 31 states and 2027 transitions. [2022-11-20 11:17:07,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 542 transitions, 5450 flow [2022-11-20 11:17:07,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 542 transitions, 5189 flow, removed 57 selfloop flow, removed 8 redundant places. [2022-11-20 11:17:07,420 INFO L231 Difference]: Finished difference. Result has 315 places, 318 transitions, 3337 flow [2022-11-20 11:17:07,421 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3337, PETRI_PLACES=315, PETRI_TRANSITIONS=318} [2022-11-20 11:17:07,421 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 220 predicate places. [2022-11-20 11:17:07,421 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 318 transitions, 3337 flow [2022-11-20 11:17:07,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:07,422 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:17:07,422 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] [2022-11-20 11:17:07,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:17:07,423 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:17:07,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:07,424 INFO L85 PathProgramCache]: Analyzing trace with hash -438500185, now seen corresponding path program 3 times [2022-11-20 11:17:07,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:07,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251344841] [2022-11-20 11:17:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:07,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:17:08,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:08,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251344841] [2022-11-20 11:17:08,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251344841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:08,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:08,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:17:08,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267554607] [2022-11-20 11:17:08,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:08,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:17:08,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:08,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:17:08,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:17:08,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-20 11:17:08,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 318 transitions, 3337 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:08,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:17:08,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-20 11:17:08,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:17:12,488 INFO L130 PetriNetUnfolder]: 2694/7780 cut-off events. [2022-11-20 11:17:12,488 INFO L131 PetriNetUnfolder]: For 37413/37413 co-relation queries the response was YES. [2022-11-20 11:17:12,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28974 conditions, 7780 events. 2694/7780 cut-off events. For 37413/37413 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 64906 event pairs, 629 based on Foata normal form. 28/7776 useless extension candidates. Maximal degree in co-relation 28634. Up to 2981 conditions per place. [2022-11-20 11:17:12,591 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 374 selfloop transitions, 168 changer transitions 0/633 dead transitions. [2022-11-20 11:17:12,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 633 transitions, 7113 flow [2022-11-20 11:17:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:17:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:17:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2301 transitions. [2022-11-20 11:17:12,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6708454810495627 [2022-11-20 11:17:12,598 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2301 transitions. [2022-11-20 11:17:12,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2301 transitions. [2022-11-20 11:17:12,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:17:12,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2301 transitions. [2022-11-20 11:17:12,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 65.74285714285715) internal successors, (2301), 35 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:12,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:12,614 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:12,614 INFO L175 Difference]: Start difference. First operand has 315 places, 318 transitions, 3337 flow. Second operand 35 states and 2301 transitions. [2022-11-20 11:17:12,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 633 transitions, 7113 flow [2022-11-20 11:17:13,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 633 transitions, 6787 flow, removed 68 selfloop flow, removed 8 redundant places. [2022-11-20 11:17:13,050 INFO L231 Difference]: Finished difference. Result has 360 places, 384 transitions, 4743 flow [2022-11-20 11:17:13,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4743, PETRI_PLACES=360, PETRI_TRANSITIONS=384} [2022-11-20 11:17:13,051 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 265 predicate places. [2022-11-20 11:17:13,051 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 384 transitions, 4743 flow [2022-11-20 11:17:13,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:13,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:17:13,052 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] [2022-11-20 11:17:13,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:17:13,052 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:17:13,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:13,053 INFO L85 PathProgramCache]: Analyzing trace with hash 773389416, now seen corresponding path program 2 times [2022-11-20 11:17:13,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:13,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101033422] [2022-11-20 11:17:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:13,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:17:13,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:13,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101033422] [2022-11-20 11:17:13,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101033422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:13,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:13,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:17:13,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62518776] [2022-11-20 11:17:13,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:13,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:17:13,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:13,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:17:13,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:17:13,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-20 11:17:13,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 384 transitions, 4743 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:13,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:17:13,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-20 11:17:13,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:17:18,146 INFO L130 PetriNetUnfolder]: 3041/8644 cut-off events. [2022-11-20 11:17:18,146 INFO L131 PetriNetUnfolder]: For 58706/58706 co-relation queries the response was YES. [2022-11-20 11:17:18,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34715 conditions, 8644 events. 3041/8644 cut-off events. For 58706/58706 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 74664 event pairs, 507 based on Foata normal form. 32/8634 useless extension candidates. Maximal degree in co-relation 34355. Up to 3639 conditions per place. [2022-11-20 11:17:18,257 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 445 selfloop transitions, 186 changer transitions 0/722 dead transitions. [2022-11-20 11:17:18,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 722 transitions, 9182 flow [2022-11-20 11:17:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:17:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:17:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2313 transitions. [2022-11-20 11:17:18,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6743440233236152 [2022-11-20 11:17:18,263 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2313 transitions. [2022-11-20 11:17:18,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2313 transitions. [2022-11-20 11:17:18,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:17:18,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2313 transitions. [2022-11-20 11:17:18,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 66.08571428571429) internal successors, (2313), 35 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:18,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:18,276 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:18,276 INFO L175 Difference]: Start difference. First operand has 360 places, 384 transitions, 4743 flow. Second operand 35 states and 2313 transitions. [2022-11-20 11:17:18,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 722 transitions, 9182 flow [2022-11-20 11:17:18,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 722 transitions, 8533 flow, removed 202 selfloop flow, removed 11 redundant places. [2022-11-20 11:17:18,834 INFO L231 Difference]: Finished difference. Result has 399 places, 439 transitions, 5757 flow [2022-11-20 11:17:18,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=4306, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5757, PETRI_PLACES=399, PETRI_TRANSITIONS=439} [2022-11-20 11:17:18,835 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 304 predicate places. [2022-11-20 11:17:18,835 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 439 transitions, 5757 flow [2022-11-20 11:17:18,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:18,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:17:18,836 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] [2022-11-20 11:17:18,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:17:18,836 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:17:18,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash 384261101, now seen corresponding path program 4 times [2022-11-20 11:17:18,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:18,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694139046] [2022-11-20 11:17:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:18,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:17:19,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:19,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694139046] [2022-11-20 11:17:19,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694139046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:19,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:19,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:17:19,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192824942] [2022-11-20 11:17:19,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:19,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:17:19,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:17:19,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:17:19,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-20 11:17:19,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 439 transitions, 5757 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:19,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:17:19,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-20 11:17:19,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:17:24,413 INFO L130 PetriNetUnfolder]: 3491/9872 cut-off events. [2022-11-20 11:17:24,413 INFO L131 PetriNetUnfolder]: For 84085/84085 co-relation queries the response was YES. [2022-11-20 11:17:24,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42400 conditions, 9872 events. 3491/9872 cut-off events. For 84085/84085 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 87171 event pairs, 816 based on Foata normal form. 28/9862 useless extension candidates. Maximal degree in co-relation 42022. Up to 4520 conditions per place. [2022-11-20 11:17:24,523 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 422 selfloop transitions, 173 changer transitions 0/686 dead transitions. [2022-11-20 11:17:24,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 686 transitions, 9166 flow [2022-11-20 11:17:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:17:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 11:17:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1902 transitions. [2022-11-20 11:17:24,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.669247009148487 [2022-11-20 11:17:24,527 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1902 transitions. [2022-11-20 11:17:24,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1902 transitions. [2022-11-20 11:17:24,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:17:24,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1902 transitions. [2022-11-20 11:17:24,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 65.58620689655173) internal successors, (1902), 29 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:24,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 98.0) internal successors, (2940), 30 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:24,537 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 98.0) internal successors, (2940), 30 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:24,537 INFO L175 Difference]: Start difference. First operand has 399 places, 439 transitions, 5757 flow. Second operand 29 states and 1902 transitions. [2022-11-20 11:17:24,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 686 transitions, 9166 flow [2022-11-20 11:17:25,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 686 transitions, 8550 flow, removed 190 selfloop flow, removed 14 redundant places. [2022-11-20 11:17:25,103 INFO L231 Difference]: Finished difference. Result has 422 places, 478 transitions, 6444 flow [2022-11-20 11:17:25,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=5279, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6444, PETRI_PLACES=422, PETRI_TRANSITIONS=478} [2022-11-20 11:17:25,104 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 327 predicate places. [2022-11-20 11:17:25,104 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 478 transitions, 6444 flow [2022-11-20 11:17:25,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:25,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:17:25,105 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] [2022-11-20 11:17:25,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:17:25,105 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:17:25,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash 251493165, now seen corresponding path program 5 times [2022-11-20 11:17:25,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:25,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309074987] [2022-11-20 11:17:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:25,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:17:25,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:25,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309074987] [2022-11-20 11:17:25,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309074987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:25,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:25,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:17:25,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154180482] [2022-11-20 11:17:25,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:25,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:17:25,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:17:25,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:17:25,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-20 11:17:25,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 478 transitions, 6444 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:25,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:17:25,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-20 11:17:25,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:17:31,583 INFO L130 PetriNetUnfolder]: 3794/10710 cut-off events. [2022-11-20 11:17:31,583 INFO L131 PetriNetUnfolder]: For 114994/114994 co-relation queries the response was YES. [2022-11-20 11:17:31,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48405 conditions, 10710 events. 3794/10710 cut-off events. For 114994/114994 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 96194 event pairs, 848 based on Foata normal form. 28/10700 useless extension candidates. Maximal degree in co-relation 48019. Up to 4873 conditions per place. [2022-11-20 11:17:31,745 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 475 selfloop transitions, 188 changer transitions 0/754 dead transitions. [2022-11-20 11:17:31,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 754 transitions, 10238 flow [2022-11-20 11:17:31,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:17:31,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:17:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2174 transitions. [2022-11-20 11:17:31,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6722325293753865 [2022-11-20 11:17:31,751 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2174 transitions. [2022-11-20 11:17:31,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2174 transitions. [2022-11-20 11:17:31,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:17:31,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2174 transitions. [2022-11-20 11:17:31,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 65.87878787878788) internal successors, (2174), 33 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:31,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 98.0) internal successors, (3332), 34 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:31,763 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 98.0) internal successors, (3332), 34 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:31,764 INFO L175 Difference]: Start difference. First operand has 422 places, 478 transitions, 6444 flow. Second operand 33 states and 2174 transitions. [2022-11-20 11:17:31,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 754 transitions, 10238 flow [2022-11-20 11:17:32,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 754 transitions, 9814 flow, removed 185 selfloop flow, removed 5 redundant places. [2022-11-20 11:17:32,802 INFO L231 Difference]: Finished difference. Result has 461 places, 511 transitions, 7381 flow [2022-11-20 11:17:32,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=6134, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7381, PETRI_PLACES=461, PETRI_TRANSITIONS=511} [2022-11-20 11:17:32,803 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 366 predicate places. [2022-11-20 11:17:32,803 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 511 transitions, 7381 flow [2022-11-20 11:17:32,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:32,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:17:32,804 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] [2022-11-20 11:17:32,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:17:32,804 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:17:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash -416498069, now seen corresponding path program 6 times [2022-11-20 11:17:32,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:32,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761737555] [2022-11-20 11:17:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:32,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:17:33,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:33,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761737555] [2022-11-20 11:17:33,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761737555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:33,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:33,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:17:33,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744669449] [2022-11-20 11:17:33,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:33,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:17:33,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:33,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:17:33,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:17:33,553 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-20 11:17:33,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 511 transitions, 7381 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:33,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:17:33,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-20 11:17:33,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:17:39,752 INFO L130 PetriNetUnfolder]: 4110/11576 cut-off events. [2022-11-20 11:17:39,753 INFO L131 PetriNetUnfolder]: For 158167/158167 co-relation queries the response was YES. [2022-11-20 11:17:39,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55323 conditions, 11576 events. 4110/11576 cut-off events. For 158167/158167 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 105401 event pairs, 895 based on Foata normal form. 30/11569 useless extension candidates. Maximal degree in co-relation 54924. Up to 4560 conditions per place. [2022-11-20 11:17:39,965 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 442 selfloop transitions, 236 changer transitions 0/769 dead transitions. [2022-11-20 11:17:39,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 769 transitions, 11191 flow [2022-11-20 11:17:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:17:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:17:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2277 transitions. [2022-11-20 11:17:39,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6638483965014578 [2022-11-20 11:17:39,970 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2277 transitions. [2022-11-20 11:17:39,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2277 transitions. [2022-11-20 11:17:39,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:17:39,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2277 transitions. [2022-11-20 11:17:39,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 65.05714285714286) internal successors, (2277), 35 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:39,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:39,981 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:39,981 INFO L175 Difference]: Start difference. First operand has 461 places, 511 transitions, 7381 flow. Second operand 35 states and 2277 transitions. [2022-11-20 11:17:39,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 769 transitions, 11191 flow [2022-11-20 11:17:41,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 769 transitions, 10754 flow, removed 105 selfloop flow, removed 16 redundant places. [2022-11-20 11:17:41,245 INFO L231 Difference]: Finished difference. Result has 488 places, 538 transitions, 8322 flow [2022-11-20 11:17:41,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=6959, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8322, PETRI_PLACES=488, PETRI_TRANSITIONS=538} [2022-11-20 11:17:41,245 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 393 predicate places. [2022-11-20 11:17:41,246 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 538 transitions, 8322 flow [2022-11-20 11:17:41,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:41,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:17:41,246 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] [2022-11-20 11:17:41,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:17:41,246 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:17:41,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:41,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1737405319, now seen corresponding path program 7 times [2022-11-20 11:17:41,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:41,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024262611] [2022-11-20 11:17:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:41,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:17:41,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:41,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024262611] [2022-11-20 11:17:41,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024262611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:41,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:41,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:17:41,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295042327] [2022-11-20 11:17:41,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:41,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:17:41,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:41,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:17:41,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:17:41,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-20 11:17:41,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 538 transitions, 8322 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:41,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:17:41,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-20 11:17:41,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:17:48,872 INFO L130 PetriNetUnfolder]: 4340/12280 cut-off events. [2022-11-20 11:17:48,872 INFO L131 PetriNetUnfolder]: For 201177/201177 co-relation queries the response was YES. [2022-11-20 11:17:49,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61383 conditions, 12280 events. 4340/12280 cut-off events. For 201177/201177 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 113109 event pairs, 797 based on Foata normal form. 28/12272 useless extension candidates. Maximal degree in co-relation 60978. Up to 3969 conditions per place. [2022-11-20 11:17:49,046 INFO L137 encePairwiseOnDemand]: 80/98 looper letters, 444 selfloop transitions, 280 changer transitions 0/815 dead transitions. [2022-11-20 11:17:49,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 815 transitions, 12270 flow [2022-11-20 11:17:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:17:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:17:49,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2471 transitions. [2022-11-20 11:17:49,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6635338345864662 [2022-11-20 11:17:49,050 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2471 transitions. [2022-11-20 11:17:49,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2471 transitions. [2022-11-20 11:17:49,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:17:49,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2471 transitions. [2022-11-20 11:17:49,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 65.02631578947368) internal successors, (2471), 38 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:49,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 98.0) internal successors, (3822), 39 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:49,062 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 98.0) internal successors, (3822), 39 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:49,062 INFO L175 Difference]: Start difference. First operand has 488 places, 538 transitions, 8322 flow. Second operand 38 states and 2471 transitions. [2022-11-20 11:17:49,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 815 transitions, 12270 flow [2022-11-20 11:17:50,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 815 transitions, 11819 flow, removed 107 selfloop flow, removed 20 redundant places. [2022-11-20 11:17:50,423 INFO L231 Difference]: Finished difference. Result has 511 places, 551 transitions, 8943 flow [2022-11-20 11:17:50,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=7877, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8943, PETRI_PLACES=511, PETRI_TRANSITIONS=551} [2022-11-20 11:17:50,424 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 416 predicate places. [2022-11-20 11:17:50,424 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 551 transitions, 8943 flow [2022-11-20 11:17:50,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:50,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:17:50,425 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] [2022-11-20 11:17:50,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:17:50,425 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:17:50,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1940840716, now seen corresponding path program 3 times [2022-11-20 11:17:50,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:50,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503578477] [2022-11-20 11:17:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:50,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:17:51,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:51,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503578477] [2022-11-20 11:17:51,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503578477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:51,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:51,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:17:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392755771] [2022-11-20 11:17:51,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:51,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:17:51,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:17:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:17:51,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-20 11:17:51,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 551 transitions, 8943 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:51,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:17:51,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-20 11:17:51,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:17:57,937 INFO L130 PetriNetUnfolder]: 4667/13182 cut-off events. [2022-11-20 11:17:57,937 INFO L131 PetriNetUnfolder]: For 249277/249277 co-relation queries the response was YES. [2022-11-20 11:17:58,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68749 conditions, 13182 events. 4667/13182 cut-off events. For 249277/249277 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 125202 event pairs, 729 based on Foata normal form. 32/13159 useless extension candidates. Maximal degree in co-relation 68336. Up to 6104 conditions per place. [2022-11-20 11:17:58,479 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 604 selfloop transitions, 239 changer transitions 0/934 dead transitions. [2022-11-20 11:17:58,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 934 transitions, 15894 flow [2022-11-20 11:17:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:17:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:17:58,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2360 transitions. [2022-11-20 11:17:58,498 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6689342403628118 [2022-11-20 11:17:58,499 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2360 transitions. [2022-11-20 11:17:58,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2360 transitions. [2022-11-20 11:17:58,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:17:58,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2360 transitions. [2022-11-20 11:17:58,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 65.55555555555556) internal successors, (2360), 36 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:58,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 98.0) internal successors, (3626), 37 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:58,517 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 98.0) internal successors, (3626), 37 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:58,517 INFO L175 Difference]: Start difference. First operand has 511 places, 551 transitions, 8943 flow. Second operand 36 states and 2360 transitions. [2022-11-20 11:17:58,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 934 transitions, 15894 flow [2022-11-20 11:18:00,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 934 transitions, 14785 flow, removed 146 selfloop flow, removed 35 redundant places. [2022-11-20 11:18:00,353 INFO L231 Difference]: Finished difference. Result has 523 places, 584 transitions, 9327 flow [2022-11-20 11:18:00,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=8024, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9327, PETRI_PLACES=523, PETRI_TRANSITIONS=584} [2022-11-20 11:18:00,354 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 428 predicate places. [2022-11-20 11:18:00,354 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 584 transitions, 9327 flow [2022-11-20 11:18:00,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:00,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:00,355 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] [2022-11-20 11:18:00,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:18:00,355 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:18:00,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:00,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1234959968, now seen corresponding path program 4 times [2022-11-20 11:18:00,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:00,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183712387] [2022-11-20 11:18:00,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:00,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:18:00,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:00,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183712387] [2022-11-20 11:18:00,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183712387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:00,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:00,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:18:00,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251576158] [2022-11-20 11:18:00,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:00,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:18:00,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:00,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:18:00,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:18:00,954 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-20 11:18:00,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 584 transitions, 9327 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:00,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:00,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-20 11:18:00,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:08,223 INFO L130 PetriNetUnfolder]: 5019/14165 cut-off events. [2022-11-20 11:18:08,223 INFO L131 PetriNetUnfolder]: For 277886/277886 co-relation queries the response was YES. [2022-11-20 11:18:08,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75600 conditions, 14165 events. 5019/14165 cut-off events. For 277886/277886 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 136474 event pairs, 672 based on Foata normal form. 34/14153 useless extension candidates. Maximal degree in co-relation 75179. Up to 5366 conditions per place. [2022-11-20 11:18:08,487 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 535 selfloop transitions, 316 changer transitions 0/942 dead transitions. [2022-11-20 11:18:08,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 942 transitions, 16020 flow [2022-11-20 11:18:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:18:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:18:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2463 transitions. [2022-11-20 11:18:08,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6613856068743287 [2022-11-20 11:18:08,492 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2463 transitions. [2022-11-20 11:18:08,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2463 transitions. [2022-11-20 11:18:08,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:08,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2463 transitions. [2022-11-20 11:18:08,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 64.8157894736842) internal successors, (2463), 38 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:08,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 98.0) internal successors, (3822), 39 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:08,505 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 98.0) internal successors, (3822), 39 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:08,505 INFO L175 Difference]: Start difference. First operand has 523 places, 584 transitions, 9327 flow. Second operand 38 states and 2463 transitions. [2022-11-20 11:18:08,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 942 transitions, 16020 flow [2022-11-20 11:18:10,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 942 transitions, 15725 flow, removed 52 selfloop flow, removed 14 redundant places. [2022-11-20 11:18:10,958 INFO L231 Difference]: Finished difference. Result has 555 places, 611 transitions, 10566 flow [2022-11-20 11:18:10,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=9032, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10566, PETRI_PLACES=555, PETRI_TRANSITIONS=611} [2022-11-20 11:18:10,959 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 460 predicate places. [2022-11-20 11:18:10,960 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 611 transitions, 10566 flow [2022-11-20 11:18:10,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:10,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:10,961 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] [2022-11-20 11:18:10,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:18:10,961 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-20 11:18:10,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:10,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1034817384, now seen corresponding path program 5 times [2022-11-20 11:18:10,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:10,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453577064] [2022-11-20 11:18:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:10,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:18:11,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:11,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453577064] [2022-11-20 11:18:11,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453577064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:11,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:11,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:18:11,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16252491] [2022-11-20 11:18:11,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:11,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:18:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:11,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:18:11,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:18:11,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-20 11:18:11,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 611 transitions, 10566 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:11,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:11,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-20 11:18:11,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand