./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:11:04,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:11:04,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:11:04,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:11:04,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:11:04,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:11:04,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:11:04,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:11:04,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:11:04,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:11:04,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:11:04,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:11:04,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:11:04,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:11:04,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:11:04,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:11:04,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:11:04,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:11:04,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:11:04,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:11:04,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:11:04,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:11:04,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:11:04,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:11:04,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:11:04,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:11:04,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:11:04,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:11:04,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:11:04,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:11:04,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:11:04,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:11:04,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:11:04,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:11:04,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:11:04,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:11:04,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:11:04,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:11:04,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:11:04,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:11:04,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:11:04,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:11:04,851 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:11:04,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:11:04,852 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:11:04,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:11:04,854 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:11:04,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:11:04,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:11:04,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:11:04,856 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:11:04,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:11:04,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:11:04,857 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:11:04,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:11:04,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:11:04,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:11:04,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:11:04,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:11:04,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:11:04,860 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:11:04,860 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:11:04,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:11:04,861 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:11:04,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:11:04,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:11:04,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:11:04,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:11:04,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:11:04,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:11:04,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:11:04,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:11:04,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:11:04,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:11:04,864 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:11:04,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:11:04,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:11:04,865 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_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 [2022-11-16 12:11:05,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:11:05,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:11:05,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:11:05,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:11:05,261 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:11:05,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2022-11-16 12:11:05,376 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/data/62a237bf6/426dcf7bafe94396b6917ed5609234d5/FLAG73ab5763d [2022-11-16 12:11:05,953 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:11:05,954 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2022-11-16 12:11:05,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/data/62a237bf6/426dcf7bafe94396b6917ed5609234d5/FLAG73ab5763d [2022-11-16 12:11:06,260 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/data/62a237bf6/426dcf7bafe94396b6917ed5609234d5 [2022-11-16 12:11:06,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:11:06,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:11:06,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:11:06,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:11:06,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:11:06,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:06,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb00836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06, skipping insertion in model container [2022-11-16 12:11:06,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:06,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:11:06,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:11:06,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:11:06,871 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:11:06,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:11:06,982 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:11:06,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06 WrapperNode [2022-11-16 12:11:06,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:11:06,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:11:06,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:11:06,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:11:06,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:07,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:07,055 INFO L138 Inliner]: procedures = 161, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-11-16 12:11:07,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:11:07,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:11:07,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:11:07,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:11:07,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:07,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:07,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:07,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:07,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:07,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:07,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:07,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:07,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:11:07,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:11:07,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:11:07,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:11:07,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06" (1/1) ... [2022-11-16 12:11:07,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:11:07,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:07,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:11:07,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:11:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:11:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:11:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:11:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:11:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:11:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:11:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:11:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:11:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:11:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:11:07,211 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:11:07,415 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:11:07,417 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:11:07,699 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:11:07,706 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:11:07,706 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:11:07,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:11:07 BoogieIcfgContainer [2022-11-16 12:11:07,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:11:07,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:11:07,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:11:07,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:11:07,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:11:06" (1/3) ... [2022-11-16 12:11:07,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8de7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:11:07, skipping insertion in model container [2022-11-16 12:11:07,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:06" (2/3) ... [2022-11-16 12:11:07,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8de7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:11:07, skipping insertion in model container [2022-11-16 12:11:07,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:11:07" (3/3) ... [2022-11-16 12:11:07,729 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_23-idxsense_nr.i [2022-11-16 12:11:07,743 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:11:07,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:11:07,756 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 12:11:07,756 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:11:07,847 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:11:07,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 163 flow [2022-11-16 12:11:07,988 INFO L130 PetriNetUnfolder]: 2/78 cut-off events. [2022-11-16 12:11:07,988 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:11:07,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2022-11-16 12:11:07,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 79 transitions, 163 flow [2022-11-16 12:11:08,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 78 transitions, 159 flow [2022-11-16 12:11:08,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:11:08,030 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;@4e4ffc3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:11:08,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 12:11:08,042 INFO L130 PetriNetUnfolder]: 1/22 cut-off events. [2022-11-16 12:11:08,042 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:11:08,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:08,044 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:08,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:08,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:08,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1315720074, now seen corresponding path program 1 times [2022-11-16 12:11:08,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:08,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022772035] [2022-11-16 12:11:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:08,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:08,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:08,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022772035] [2022-11-16 12:11:08,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022772035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:08,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:08,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:11:08,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095202668] [2022-11-16 12:11:08,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:08,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:11:08,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:08,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:11:08,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:11:08,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 79 [2022-11-16 12:11:08,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:08,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:08,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 79 [2022-11-16 12:11:08,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:08,681 INFO L130 PetriNetUnfolder]: 1/84 cut-off events. [2022-11-16 12:11:08,681 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:11:08,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 84 events. 1/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 55. Up to 14 conditions per place. [2022-11-16 12:11:08,683 INFO L137 encePairwiseOnDemand]: 71/79 looper letters, 16 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2022-11-16 12:11:08,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 211 flow [2022-11-16 12:11:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:11:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:11:08,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 350 transitions. [2022-11-16 12:11:08,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8860759493670886 [2022-11-16 12:11:08,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 350 transitions. [2022-11-16 12:11:08,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 350 transitions. [2022-11-16 12:11:08,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:08,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 350 transitions. [2022-11-16 12:11:08,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:08,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:08,735 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:08,738 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 159 flow. Second operand 5 states and 350 transitions. [2022-11-16 12:11:08,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 211 flow [2022-11-16 12:11:08,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 84 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:11:08,753 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 188 flow [2022-11-16 12:11:08,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2022-11-16 12:11:08,760 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 6 predicate places. [2022-11-16 12:11:08,761 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 188 flow [2022-11-16 12:11:08,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:08,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:08,762 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, 1, 1, 1] [2022-11-16 12:11:08,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:11:08,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:08,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2088827881, now seen corresponding path program 1 times [2022-11-16 12:11:08,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:08,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561565766] [2022-11-16 12:11:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:08,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:11:08,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:08,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561565766] [2022-11-16 12:11:08,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561565766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:08,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:08,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:11:08,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110327080] [2022-11-16 12:11:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:08,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:11:08,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:08,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:11:08,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:11:08,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 79 [2022-11-16 12:11:08,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:08,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:08,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 79 [2022-11-16 12:11:08,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:08,983 INFO L130 PetriNetUnfolder]: 1/83 cut-off events. [2022-11-16 12:11:08,984 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:11:08,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 83 events. 1/83 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 78. Up to 7 conditions per place. [2022-11-16 12:11:08,991 INFO L137 encePairwiseOnDemand]: 73/79 looper letters, 8 selfloop transitions, 8 changer transitions 0/80 dead transitions. [2022-11-16 12:11:08,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 80 transitions, 218 flow [2022-11-16 12:11:08,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:11:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:11:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2022-11-16 12:11:09,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8582278481012658 [2022-11-16 12:11:09,002 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 339 transitions. [2022-11-16 12:11:09,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 339 transitions. [2022-11-16 12:11:09,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:09,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 339 transitions. [2022-11-16 12:11:09,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:09,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:09,011 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:09,011 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 188 flow. Second operand 5 states and 339 transitions. [2022-11-16 12:11:09,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 80 transitions, 218 flow [2022-11-16 12:11:09,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 80 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:11:09,015 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 206 flow [2022-11-16 12:11:09,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2022-11-16 12:11:09,017 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 9 predicate places. [2022-11-16 12:11:09,018 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 206 flow [2022-11-16 12:11:09,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:09,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:09,019 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, 1, 1, 1] [2022-11-16 12:11:09,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:11:09,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:09,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:09,021 INFO L85 PathProgramCache]: Analyzing trace with hash 329155042, now seen corresponding path program 1 times [2022-11-16 12:11:09,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:09,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631590237] [2022-11-16 12:11:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:09,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:09,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:09,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631590237] [2022-11-16 12:11:09,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631590237] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:09,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114088007] [2022-11-16 12:11:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:09,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:09,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:09,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:09,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:11:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:09,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:11:09,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:09,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:11:09,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114088007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:09,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:11:09,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:11:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814108722] [2022-11-16 12:11:09,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:09,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:11:09,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:09,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:11:09,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:11:09,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 79 [2022-11-16 12:11:09,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:09,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:09,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 79 [2022-11-16 12:11:09,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:09,585 INFO L130 PetriNetUnfolder]: 1/82 cut-off events. [2022-11-16 12:11:09,585 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-16 12:11:09,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 82 events. 1/82 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 12. Up to 9 conditions per place. [2022-11-16 12:11:09,586 INFO L137 encePairwiseOnDemand]: 75/79 looper letters, 10 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2022-11-16 12:11:09,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 79 transitions, 232 flow [2022-11-16 12:11:09,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:11:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:11:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2022-11-16 12:11:09,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8607594936708861 [2022-11-16 12:11:09,590 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2022-11-16 12:11:09,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2022-11-16 12:11:09,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:09,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2022-11-16 12:11:09,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:09,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:09,594 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:09,594 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 206 flow. Second operand 4 states and 272 transitions. [2022-11-16 12:11:09,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 79 transitions, 232 flow [2022-11-16 12:11:09,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 79 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:11:09,598 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 200 flow [2022-11-16 12:11:09,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2022-11-16 12:11:09,599 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 8 predicate places. [2022-11-16 12:11:09,600 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 200 flow [2022-11-16 12:11:09,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:09,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:09,601 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] [2022-11-16 12:11:09,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:11:09,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:09,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:09,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:09,807 INFO L85 PathProgramCache]: Analyzing trace with hash -377282251, now seen corresponding path program 1 times [2022-11-16 12:11:09,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:09,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029407785] [2022-11-16 12:11:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:09,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:09,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:09,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029407785] [2022-11-16 12:11:09,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029407785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:09,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520350551] [2022-11-16 12:11:09,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:09,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:09,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:09,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:09,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:11:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:10,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:11:10,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:10,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:10,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520350551] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:11:10,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:11:10,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:11:10,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8777969] [2022-11-16 12:11:10,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:11:10,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:11:10,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:10,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:11:10,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:11:10,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 79 [2022-11-16 12:11:10,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 200 flow. Second operand has 10 states, 10 states have (on average 67.7) internal successors, (677), 10 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:10,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:10,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 79 [2022-11-16 12:11:10,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:10,312 INFO L130 PetriNetUnfolder]: 1/90 cut-off events. [2022-11-16 12:11:10,312 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-16 12:11:10,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 90 events. 1/90 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 2/86 useless extension candidates. Maximal degree in co-relation 66. Up to 7 conditions per place. [2022-11-16 12:11:10,313 INFO L137 encePairwiseOnDemand]: 73/79 looper letters, 17 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2022-11-16 12:11:10,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 290 flow [2022-11-16 12:11:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:11:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:11:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 613 transitions. [2022-11-16 12:11:10,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8621659634317862 [2022-11-16 12:11:10,317 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 613 transitions. [2022-11-16 12:11:10,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 613 transitions. [2022-11-16 12:11:10,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:10,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 613 transitions. [2022-11-16 12:11:10,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.11111111111111) internal successors, (613), 9 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:10,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:10,323 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:10,323 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 200 flow. Second operand 9 states and 613 transitions. [2022-11-16 12:11:10,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 290 flow [2022-11-16 12:11:10,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 276 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:11:10,328 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 246 flow [2022-11-16 12:11:10,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=246, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2022-11-16 12:11:10,329 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 17 predicate places. [2022-11-16 12:11:10,329 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 246 flow [2022-11-16 12:11:10,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.7) internal successors, (677), 10 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:10,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:10,330 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] [2022-11-16 12:11:10,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:10,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:10,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:10,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1754114539, now seen corresponding path program 2 times [2022-11-16 12:11:10,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:10,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16086231] [2022-11-16 12:11:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:10,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:10,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:10,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16086231] [2022-11-16 12:11:10,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16086231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:10,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975900839] [2022-11-16 12:11:10,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:11:10,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:10,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:10,794 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:10,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:11:10,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:11:10,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:11:10,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:11:10,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:11,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-16 12:11:11,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-16 12:11:11,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:11:11,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-16 12:11:11,488 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 16 treesize of output 12 [2022-11-16 12:11:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:11:11,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:11:11,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975900839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:11,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:11:11,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2022-11-16 12:11:11,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358330021] [2022-11-16 12:11:11,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:11,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:11:11,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:11,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:11:11,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:11:11,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2022-11-16 12:11:11,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 246 flow. Second operand has 10 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:11,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:11,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2022-11-16 12:11:11,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:11,852 INFO L130 PetriNetUnfolder]: 121/473 cut-off events. [2022-11-16 12:11:11,853 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-16 12:11:11,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 473 events. 121/473 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2207 event pairs, 44 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 714. Up to 196 conditions per place. [2022-11-16 12:11:11,864 INFO L137 encePairwiseOnDemand]: 67/79 looper letters, 45 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2022-11-16 12:11:11,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 111 transitions, 420 flow [2022-11-16 12:11:11,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:11:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:11:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 483 transitions. [2022-11-16 12:11:11,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.679324894514768 [2022-11-16 12:11:11,869 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 483 transitions. [2022-11-16 12:11:11,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 483 transitions. [2022-11-16 12:11:11,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:11,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 483 transitions. [2022-11-16 12:11:11,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 53.666666666666664) internal successors, (483), 9 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:11,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:11,876 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:11,876 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 246 flow. Second operand 9 states and 483 transitions. [2022-11-16 12:11:11,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 111 transitions, 420 flow [2022-11-16 12:11:11,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 111 transitions, 404 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:11:11,884 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 301 flow [2022-11-16 12:11:11,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=301, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2022-11-16 12:11:11,885 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 24 predicate places. [2022-11-16 12:11:11,885 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 301 flow [2022-11-16 12:11:11,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:11,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:11,887 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] [2022-11-16 12:11:11,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:12,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:12,099 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:12,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:12,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1306719936, now seen corresponding path program 1 times [2022-11-16 12:11:12,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:12,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002115297] [2022-11-16 12:11:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:12,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:12,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:12,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002115297] [2022-11-16 12:11:12,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002115297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:12,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120642915] [2022-11-16 12:11:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:12,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:12,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:12,256 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:12,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:11:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:12,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:11:12,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:12,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:12,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120642915] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:11:12,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:11:12,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:11:12,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544312472] [2022-11-16 12:11:12,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:11:12,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:11:12,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:12,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:11:12,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:11:12,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 79 [2022-11-16 12:11:12,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 301 flow. Second operand has 18 states, 18 states have (on average 68.05555555555556) internal successors, (1225), 18 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:12,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:12,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 79 [2022-11-16 12:11:12,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:12,856 INFO L130 PetriNetUnfolder]: 7/218 cut-off events. [2022-11-16 12:11:12,856 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-11-16 12:11:12,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 218 events. 7/218 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 561 event pairs, 2 based on Foata normal form. 4/202 useless extension candidates. Maximal degree in co-relation 307. Up to 14 conditions per place. [2022-11-16 12:11:12,858 INFO L137 encePairwiseOnDemand]: 73/79 looper letters, 33 selfloop transitions, 21 changer transitions 0/126 dead transitions. [2022-11-16 12:11:12,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 126 transitions, 563 flow [2022-11-16 12:11:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:11:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:11:12,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1423 transitions. [2022-11-16 12:11:12,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577456298975287 [2022-11-16 12:11:12,862 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1423 transitions. [2022-11-16 12:11:12,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1423 transitions. [2022-11-16 12:11:12,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:12,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1423 transitions. [2022-11-16 12:11:12,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.76190476190476) internal successors, (1423), 21 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:12,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 79.0) internal successors, (1738), 22 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:12,872 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 79.0) internal successors, (1738), 22 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:12,872 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 301 flow. Second operand 21 states and 1423 transitions. [2022-11-16 12:11:12,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 126 transitions, 563 flow [2022-11-16 12:11:12,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 126 transitions, 553 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:11:12,877 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 447 flow [2022-11-16 12:11:12,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=447, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2022-11-16 12:11:12,878 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 45 predicate places. [2022-11-16 12:11:12,879 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 447 flow [2022-11-16 12:11:12,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 68.05555555555556) internal successors, (1225), 18 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:12,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:12,880 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] [2022-11-16 12:11:12,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:13,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:13,085 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:13,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:13,086 INFO L85 PathProgramCache]: Analyzing trace with hash -547033216, now seen corresponding path program 2 times [2022-11-16 12:11:13,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:13,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588206593] [2022-11-16 12:11:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:13,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:13,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:13,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588206593] [2022-11-16 12:11:13,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588206593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:13,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230648904] [2022-11-16 12:11:13,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:11:13,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:13,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:13,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:13,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:11:13,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:11:13,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:11:13,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:11:13,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:13,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-16 12:11:13,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-16 12:11:14,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:11:14,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-16 12:11:14,193 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 16 treesize of output 12 [2022-11-16 12:11:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-16 12:11:14,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:11:14,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230648904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:14,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:11:14,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2022-11-16 12:11:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913569926] [2022-11-16 12:11:14,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:14,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:11:14,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:14,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:11:14,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:11:14,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2022-11-16 12:11:14,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 447 flow. Second operand has 10 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:14,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:14,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2022-11-16 12:11:14,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:14,439 INFO L130 PetriNetUnfolder]: 92/415 cut-off events. [2022-11-16 12:11:14,439 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2022-11-16 12:11:14,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 415 events. 92/415 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1738 event pairs, 14 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 659. Up to 176 conditions per place. [2022-11-16 12:11:14,442 INFO L137 encePairwiseOnDemand]: 67/79 looper letters, 37 selfloop transitions, 15 changer transitions 0/120 dead transitions. [2022-11-16 12:11:14,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 120 transitions, 599 flow [2022-11-16 12:11:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:11:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:11:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 471 transitions. [2022-11-16 12:11:14,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6624472573839663 [2022-11-16 12:11:14,445 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 471 transitions. [2022-11-16 12:11:14,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 471 transitions. [2022-11-16 12:11:14,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:14,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 471 transitions. [2022-11-16 12:11:14,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 52.333333333333336) internal successors, (471), 9 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:14,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:14,449 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:14,449 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 447 flow. Second operand 9 states and 471 transitions. [2022-11-16 12:11:14,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 120 transitions, 599 flow [2022-11-16 12:11:14,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 120 transitions, 543 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-11-16 12:11:14,455 INFO L231 Difference]: Finished difference. Result has 128 places, 112 transitions, 472 flow [2022-11-16 12:11:14,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=472, PETRI_PLACES=128, PETRI_TRANSITIONS=112} [2022-11-16 12:11:14,456 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 48 predicate places. [2022-11-16 12:11:14,456 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 112 transitions, 472 flow [2022-11-16 12:11:14,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:14,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:14,457 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] [2022-11-16 12:11:14,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:14,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:11:14,663 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:14,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:14,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2078256232, now seen corresponding path program 1 times [2022-11-16 12:11:14,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:14,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162466655] [2022-11-16 12:11:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:14,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:14,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:14,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162466655] [2022-11-16 12:11:14,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162466655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:14,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154824323] [2022-11-16 12:11:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:14,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:14,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:14,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:15,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:11:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:15,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:11:15,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:15,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:15,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154824323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:11:15,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:11:15,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:11:15,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962109942] [2022-11-16 12:11:15,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:11:15,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:11:15,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:15,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:11:15,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:11:15,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 79 [2022-11-16 12:11:15,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 112 transitions, 472 flow. Second operand has 23 states, 23 states have (on average 68.30434782608695) internal successors, (1571), 23 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:15,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:15,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 79 [2022-11-16 12:11:15,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:16,031 INFO L130 PetriNetUnfolder]: 19/317 cut-off events. [2022-11-16 12:11:16,032 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2022-11-16 12:11:16,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 317 events. 19/317 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1053 event pairs, 3 based on Foata normal form. 3/291 useless extension candidates. Maximal degree in co-relation 479. Up to 21 conditions per place. [2022-11-16 12:11:16,035 INFO L137 encePairwiseOnDemand]: 73/79 looper letters, 45 selfloop transitions, 30 changer transitions 0/155 dead transitions. [2022-11-16 12:11:16,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 155 transitions, 808 flow [2022-11-16 12:11:16,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:11:16,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:11:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2028 transitions. [2022-11-16 12:11:16,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8556962025316456 [2022-11-16 12:11:16,042 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2028 transitions. [2022-11-16 12:11:16,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2028 transitions. [2022-11-16 12:11:16,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:16,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2028 transitions. [2022-11-16 12:11:16,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 67.6) internal successors, (2028), 30 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:16,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 79.0) internal successors, (2449), 31 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:16,059 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 79.0) internal successors, (2449), 31 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:16,059 INFO L175 Difference]: Start difference. First operand has 128 places, 112 transitions, 472 flow. Second operand 30 states and 2028 transitions. [2022-11-16 12:11:16,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 155 transitions, 808 flow [2022-11-16 12:11:16,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 155 transitions, 798 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:11:16,066 INFO L231 Difference]: Finished difference. Result has 157 places, 122 transitions, 616 flow [2022-11-16 12:11:16,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=616, PETRI_PLACES=157, PETRI_TRANSITIONS=122} [2022-11-16 12:11:16,070 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 77 predicate places. [2022-11-16 12:11:16,070 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 122 transitions, 616 flow [2022-11-16 12:11:16,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 68.30434782608695) internal successors, (1571), 23 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:16,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:16,072 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] [2022-11-16 12:11:16,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:16,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:16,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:16,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash -245089257, now seen corresponding path program 2 times [2022-11-16 12:11:16,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:16,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220194443] [2022-11-16 12:11:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:16,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:11:16,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:16,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220194443] [2022-11-16 12:11:16,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220194443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:16,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:16,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:11:16,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449032517] [2022-11-16 12:11:16,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:16,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:11:16,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:16,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:11:16,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:11:16,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2022-11-16 12:11:16,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 122 transitions, 616 flow. Second operand has 10 states, 10 states have (on average 48.5) internal successors, (485), 10 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:16,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:16,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2022-11-16 12:11:16,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:17,388 INFO L130 PetriNetUnfolder]: 140/577 cut-off events. [2022-11-16 12:11:17,388 INFO L131 PetriNetUnfolder]: For 390/396 co-relation queries the response was YES. [2022-11-16 12:11:17,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 577 events. 140/577 cut-off events. For 390/396 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2526 event pairs, 44 based on Foata normal form. 4/546 useless extension candidates. Maximal degree in co-relation 1035. Up to 119 conditions per place. [2022-11-16 12:11:17,394 INFO L137 encePairwiseOnDemand]: 66/79 looper letters, 58 selfloop transitions, 17 changer transitions 23/176 dead transitions. [2022-11-16 12:11:17,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 176 transitions, 983 flow [2022-11-16 12:11:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:11:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:11:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 655 transitions. [2022-11-16 12:11:17,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6909282700421941 [2022-11-16 12:11:17,398 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 655 transitions. [2022-11-16 12:11:17,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 655 transitions. [2022-11-16 12:11:17,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:17,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 655 transitions. [2022-11-16 12:11:17,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 54.583333333333336) internal successors, (655), 12 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:17,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:17,404 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:17,404 INFO L175 Difference]: Start difference. First operand has 157 places, 122 transitions, 616 flow. Second operand 12 states and 655 transitions. [2022-11-16 12:11:17,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 176 transitions, 983 flow [2022-11-16 12:11:17,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 176 transitions, 937 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 12:11:17,412 INFO L231 Difference]: Finished difference. Result has 155 places, 124 transitions, 646 flow [2022-11-16 12:11:17,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=646, PETRI_PLACES=155, PETRI_TRANSITIONS=124} [2022-11-16 12:11:17,413 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 75 predicate places. [2022-11-16 12:11:17,413 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 124 transitions, 646 flow [2022-11-16 12:11:17,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.5) internal successors, (485), 10 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:17,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:17,414 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] [2022-11-16 12:11:17,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:11:17,415 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:17,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:17,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1215441024, now seen corresponding path program 1 times [2022-11-16 12:11:17,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:17,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032564372] [2022-11-16 12:11:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:17,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:11:17,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:17,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032564372] [2022-11-16 12:11:17,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032564372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:17,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:17,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:11:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947921335] [2022-11-16 12:11:17,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:17,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:11:17,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:17,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:11:17,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:11:17,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2022-11-16 12:11:17,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 124 transitions, 646 flow. Second operand has 10 states, 10 states have (on average 48.5) internal successors, (485), 10 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:17,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:17,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2022-11-16 12:11:17,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:18,243 INFO L130 PetriNetUnfolder]: 73/380 cut-off events. [2022-11-16 12:11:18,244 INFO L131 PetriNetUnfolder]: For 668/678 co-relation queries the response was YES. [2022-11-16 12:11:18,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 380 events. 73/380 cut-off events. For 668/678 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1393 event pairs, 13 based on Foata normal form. 8/371 useless extension candidates. Maximal degree in co-relation 1000. Up to 68 conditions per place. [2022-11-16 12:11:18,248 INFO L137 encePairwiseOnDemand]: 67/79 looper letters, 44 selfloop transitions, 16 changer transitions 0/139 dead transitions. [2022-11-16 12:11:18,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 139 transitions, 865 flow [2022-11-16 12:11:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:11:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:11:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 568 transitions. [2022-11-16 12:11:18,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6536248561565017 [2022-11-16 12:11:18,252 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 568 transitions. [2022-11-16 12:11:18,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 568 transitions. [2022-11-16 12:11:18,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:18,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 568 transitions. [2022-11-16 12:11:18,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 51.63636363636363) internal successors, (568), 11 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:18,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 79.0) internal successors, (948), 12 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:18,259 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 79.0) internal successors, (948), 12 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:18,259 INFO L175 Difference]: Start difference. First operand has 155 places, 124 transitions, 646 flow. Second operand 11 states and 568 transitions. [2022-11-16 12:11:18,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 139 transitions, 865 flow [2022-11-16 12:11:18,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 139 transitions, 830 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-11-16 12:11:18,274 INFO L231 Difference]: Finished difference. Result has 153 places, 122 transitions, 645 flow [2022-11-16 12:11:18,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=645, PETRI_PLACES=153, PETRI_TRANSITIONS=122} [2022-11-16 12:11:18,276 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 73 predicate places. [2022-11-16 12:11:18,276 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 122 transitions, 645 flow [2022-11-16 12:11:18,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.5) internal successors, (485), 10 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:18,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:18,277 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] [2022-11-16 12:11:18,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:11:18,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:18,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1654501348, now seen corresponding path program 1 times [2022-11-16 12:11:18,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:18,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619243208] [2022-11-16 12:11:18,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:18,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:11:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:18,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619243208] [2022-11-16 12:11:18,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619243208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:18,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:18,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:11:18,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055635405] [2022-11-16 12:11:18,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:18,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:11:18,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:18,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:11:18,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:11:18,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2022-11-16 12:11:18,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 122 transitions, 645 flow. Second operand has 10 states, 10 states have (on average 48.8) internal successors, (488), 10 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:18,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:18,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2022-11-16 12:11:18,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:19,388 INFO L130 PetriNetUnfolder]: 73/374 cut-off events. [2022-11-16 12:11:19,388 INFO L131 PetriNetUnfolder]: For 585/589 co-relation queries the response was YES. [2022-11-16 12:11:19,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 374 events. 73/374 cut-off events. For 585/589 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1392 event pairs, 13 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 755. Up to 72 conditions per place. [2022-11-16 12:11:19,392 INFO L137 encePairwiseOnDemand]: 66/79 looper letters, 43 selfloop transitions, 13 changer transitions 10/146 dead transitions. [2022-11-16 12:11:19,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 146 transitions, 875 flow [2022-11-16 12:11:19,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:11:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:11:19,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 625 transitions. [2022-11-16 12:11:19,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6592827004219409 [2022-11-16 12:11:19,396 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 625 transitions. [2022-11-16 12:11:19,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 625 transitions. [2022-11-16 12:11:19,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:19,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 625 transitions. [2022-11-16 12:11:19,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.083333333333336) internal successors, (625), 12 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:19,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:19,403 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:19,403 INFO L175 Difference]: Start difference. First operand has 153 places, 122 transitions, 645 flow. Second operand 12 states and 625 transitions. [2022-11-16 12:11:19,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 146 transitions, 875 flow [2022-11-16 12:11:19,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 146 transitions, 841 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-16 12:11:19,413 INFO L231 Difference]: Finished difference. Result has 159 places, 124 transitions, 668 flow [2022-11-16 12:11:19,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=668, PETRI_PLACES=159, PETRI_TRANSITIONS=124} [2022-11-16 12:11:19,414 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 79 predicate places. [2022-11-16 12:11:19,415 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 124 transitions, 668 flow [2022-11-16 12:11:19,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.8) internal successors, (488), 10 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:19,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:19,416 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] [2022-11-16 12:11:19,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:11:19,416 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:19,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:19,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1200589961, now seen corresponding path program 1 times [2022-11-16 12:11:19,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:19,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551426271] [2022-11-16 12:11:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:19,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:11:19,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:19,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551426271] [2022-11-16 12:11:19,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551426271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:19,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:19,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:11:19,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439824888] [2022-11-16 12:11:19,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:19,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:11:19,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:19,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:11:19,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:11:19,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 79 [2022-11-16 12:11:19,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 124 transitions, 668 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:19,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:19,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 79 [2022-11-16 12:11:19,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:19,801 INFO L130 PetriNetUnfolder]: 27/253 cut-off events. [2022-11-16 12:11:19,801 INFO L131 PetriNetUnfolder]: For 338/339 co-relation queries the response was YES. [2022-11-16 12:11:19,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 253 events. 27/253 cut-off events. For 338/339 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 647 event pairs, 3 based on Foata normal form. 6/259 useless extension candidates. Maximal degree in co-relation 632. Up to 26 conditions per place. [2022-11-16 12:11:19,804 INFO L137 encePairwiseOnDemand]: 75/79 looper letters, 9 selfloop transitions, 5 changer transitions 0/126 dead transitions. [2022-11-16 12:11:19,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 126 transitions, 702 flow [2022-11-16 12:11:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:11:19,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:11:19,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2022-11-16 12:11:19,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.919831223628692 [2022-11-16 12:11:19,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2022-11-16 12:11:19,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2022-11-16 12:11:19,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:19,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2022-11-16 12:11:19,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:19,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:19,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:19,811 INFO L175 Difference]: Start difference. First operand has 159 places, 124 transitions, 668 flow. Second operand 3 states and 218 transitions. [2022-11-16 12:11:19,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 126 transitions, 702 flow [2022-11-16 12:11:19,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 126 transitions, 677 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-11-16 12:11:19,818 INFO L231 Difference]: Finished difference. Result has 151 places, 124 transitions, 653 flow [2022-11-16 12:11:19,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=653, PETRI_PLACES=151, PETRI_TRANSITIONS=124} [2022-11-16 12:11:19,820 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 71 predicate places. [2022-11-16 12:11:19,820 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 124 transitions, 653 flow [2022-11-16 12:11:19,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:19,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:19,821 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:19,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:11:19,821 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:19,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:19,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1469405989, now seen corresponding path program 1 times [2022-11-16 12:11:19,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:19,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018380613] [2022-11-16 12:11:19,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:19,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:11:20,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:20,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018380613] [2022-11-16 12:11:20,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018380613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:20,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:20,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:11:20,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162488432] [2022-11-16 12:11:20,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:20,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:11:20,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:20,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:11:20,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:11:20,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 79 [2022-11-16 12:11:20,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 124 transitions, 653 flow. Second operand has 13 states, 13 states have (on average 42.07692307692308) internal successors, (547), 13 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:20,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:20,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 79 [2022-11-16 12:11:20,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:21,091 INFO L130 PetriNetUnfolder]: 70/332 cut-off events. [2022-11-16 12:11:21,092 INFO L131 PetriNetUnfolder]: For 483/489 co-relation queries the response was YES. [2022-11-16 12:11:21,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 332 events. 70/332 cut-off events. For 483/489 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1023 event pairs, 25 based on Foata normal form. 5/331 useless extension candidates. Maximal degree in co-relation 798. Up to 44 conditions per place. [2022-11-16 12:11:21,095 INFO L137 encePairwiseOnDemand]: 64/79 looper letters, 49 selfloop transitions, 22 changer transitions 2/142 dead transitions. [2022-11-16 12:11:21,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 142 transitions, 874 flow [2022-11-16 12:11:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:11:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:11:21,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 744 transitions. [2022-11-16 12:11:21,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5539836187639613 [2022-11-16 12:11:21,098 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 744 transitions. [2022-11-16 12:11:21,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 744 transitions. [2022-11-16 12:11:21,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:21,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 744 transitions. [2022-11-16 12:11:21,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 43.76470588235294) internal successors, (744), 17 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:21,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 79.0) internal successors, (1422), 18 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:21,104 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 79.0) internal successors, (1422), 18 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:21,104 INFO L175 Difference]: Start difference. First operand has 151 places, 124 transitions, 653 flow. Second operand 17 states and 744 transitions. [2022-11-16 12:11:21,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 142 transitions, 874 flow [2022-11-16 12:11:21,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 142 transitions, 867 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:11:21,112 INFO L231 Difference]: Finished difference. Result has 165 places, 123 transitions, 688 flow [2022-11-16 12:11:21,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=688, PETRI_PLACES=165, PETRI_TRANSITIONS=123} [2022-11-16 12:11:21,113 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 85 predicate places. [2022-11-16 12:11:21,113 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 123 transitions, 688 flow [2022-11-16 12:11:21,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 42.07692307692308) internal successors, (547), 13 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:21,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:21,114 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:21,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:11:21,115 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:21,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:21,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2080761086, now seen corresponding path program 1 times [2022-11-16 12:11:21,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:21,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432410307] [2022-11-16 12:11:21,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:21,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:11:21,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:21,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432410307] [2022-11-16 12:11:21,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432410307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:21,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:21,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:11:21,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664984671] [2022-11-16 12:11:21,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:21,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:11:21,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:21,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:11:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:11:21,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 79 [2022-11-16 12:11:21,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 123 transitions, 688 flow. Second operand has 13 states, 13 states have (on average 42.07692307692308) internal successors, (547), 13 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:21,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:21,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 79 [2022-11-16 12:11:21,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:22,407 INFO L130 PetriNetUnfolder]: 68/321 cut-off events. [2022-11-16 12:11:22,407 INFO L131 PetriNetUnfolder]: For 576/582 co-relation queries the response was YES. [2022-11-16 12:11:22,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 321 events. 68/321 cut-off events. For 576/582 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 969 event pairs, 12 based on Foata normal form. 7/324 useless extension candidates. Maximal degree in co-relation 823. Up to 44 conditions per place. [2022-11-16 12:11:22,410 INFO L137 encePairwiseOnDemand]: 64/79 looper letters, 56 selfloop transitions, 22 changer transitions 2/149 dead transitions. [2022-11-16 12:11:22,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 149 transitions, 945 flow [2022-11-16 12:11:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:11:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:11:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 751 transitions. [2022-11-16 12:11:22,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591958302308265 [2022-11-16 12:11:22,413 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 751 transitions. [2022-11-16 12:11:22,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 751 transitions. [2022-11-16 12:11:22,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:22,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 751 transitions. [2022-11-16 12:11:22,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 44.1764705882353) internal successors, (751), 17 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:22,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 79.0) internal successors, (1422), 18 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:22,420 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 79.0) internal successors, (1422), 18 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:22,420 INFO L175 Difference]: Start difference. First operand has 165 places, 123 transitions, 688 flow. Second operand 17 states and 751 transitions. [2022-11-16 12:11:22,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 149 transitions, 945 flow [2022-11-16 12:11:22,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 149 transitions, 886 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-11-16 12:11:22,432 INFO L231 Difference]: Finished difference. Result has 163 places, 122 transitions, 667 flow [2022-11-16 12:11:22,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=667, PETRI_PLACES=163, PETRI_TRANSITIONS=122} [2022-11-16 12:11:22,434 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 83 predicate places. [2022-11-16 12:11:22,434 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 122 transitions, 667 flow [2022-11-16 12:11:22,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 42.07692307692308) internal successors, (547), 13 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:22,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:22,435 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:22,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:11:22,435 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:22,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2132471252, now seen corresponding path program 1 times [2022-11-16 12:11:22,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:22,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688019024] [2022-11-16 12:11:22,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:22,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:11:22,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:22,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688019024] [2022-11-16 12:11:22,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688019024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:22,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:22,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:11:22,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941638328] [2022-11-16 12:11:22,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:22,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:11:22,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:22,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:11:22,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:11:22,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 79 [2022-11-16 12:11:22,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 122 transitions, 667 flow. Second operand has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:22,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:22,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 79 [2022-11-16 12:11:22,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:22,775 INFO L130 PetriNetUnfolder]: 33/258 cut-off events. [2022-11-16 12:11:22,775 INFO L131 PetriNetUnfolder]: For 473/484 co-relation queries the response was YES. [2022-11-16 12:11:22,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 258 events. 33/258 cut-off events. For 473/484 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 697 event pairs, 5 based on Foata normal form. 5/259 useless extension candidates. Maximal degree in co-relation 691. Up to 55 conditions per place. [2022-11-16 12:11:22,777 INFO L137 encePairwiseOnDemand]: 71/79 looper letters, 17 selfloop transitions, 2 changer transitions 34/128 dead transitions. [2022-11-16 12:11:22,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 128 transitions, 787 flow [2022-11-16 12:11:22,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:11:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:11:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 404 transitions. [2022-11-16 12:11:22,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7305605786618445 [2022-11-16 12:11:22,779 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 404 transitions. [2022-11-16 12:11:22,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 404 transitions. [2022-11-16 12:11:22,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:22,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 404 transitions. [2022-11-16 12:11:22,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 57.714285714285715) internal successors, (404), 7 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:22,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 79.0) internal successors, (632), 8 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:22,782 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 79.0) internal successors, (632), 8 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:22,782 INFO L175 Difference]: Start difference. First operand has 163 places, 122 transitions, 667 flow. Second operand 7 states and 404 transitions. [2022-11-16 12:11:22,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 128 transitions, 787 flow [2022-11-16 12:11:22,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 128 transitions, 721 flow, removed 3 selfloop flow, removed 17 redundant places. [2022-11-16 12:11:22,788 INFO L231 Difference]: Finished difference. Result has 151 places, 94 transitions, 460 flow [2022-11-16 12:11:22,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=460, PETRI_PLACES=151, PETRI_TRANSITIONS=94} [2022-11-16 12:11:22,789 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 71 predicate places. [2022-11-16 12:11:22,790 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 94 transitions, 460 flow [2022-11-16 12:11:22,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:22,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:22,790 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:22,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:11:22,791 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 12:11:22,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash 750050825, now seen corresponding path program 1 times [2022-11-16 12:11:22,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:22,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351424249] [2022-11-16 12:11:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:11:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:23,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351424249] [2022-11-16 12:11:23,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351424249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:23,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:23,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:11:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725372398] [2022-11-16 12:11:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:23,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:11:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:23,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:11:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:11:23,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 79 [2022-11-16 12:11:23,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 94 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:23,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:23,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 79 [2022-11-16 12:11:23,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:23,108 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2022-11-16 12:11:23,108 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2022-11-16 12:11:23,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 132 events. 2/132 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 1 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 319. Up to 12 conditions per place. [2022-11-16 12:11:23,109 INFO L137 encePairwiseOnDemand]: 71/79 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2022-11-16 12:11:23,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 93 transitions, 490 flow [2022-11-16 12:11:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:11:23,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:11:23,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 389 transitions. [2022-11-16 12:11:23,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7034358047016275 [2022-11-16 12:11:23,112 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 389 transitions. [2022-11-16 12:11:23,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 389 transitions. [2022-11-16 12:11:23,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:23,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 389 transitions. [2022-11-16 12:11:23,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:23,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 79.0) internal successors, (632), 8 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:23,117 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 79.0) internal successors, (632), 8 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:23,118 INFO L175 Difference]: Start difference. First operand has 151 places, 94 transitions, 460 flow. Second operand 7 states and 389 transitions. [2022-11-16 12:11:23,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 93 transitions, 490 flow [2022-11-16 12:11:23,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 93 transitions, 456 flow, removed 3 selfloop flow, removed 15 redundant places. [2022-11-16 12:11:23,125 INFO L231 Difference]: Finished difference. Result has 123 places, 0 transitions, 0 flow [2022-11-16 12:11:23,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=123, PETRI_TRANSITIONS=0} [2022-11-16 12:11:23,126 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 43 predicate places. [2022-11-16 12:11:23,127 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 0 transitions, 0 flow [2022-11-16 12:11:23,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:23,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2022-11-16 12:11:23,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-16 12:11:23,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-16 12:11:23,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-16 12:11:23,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-16 12:11:23,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-16 12:11:23,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2022-11-16 12:11:23,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-16 12:11:23,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-16 12:11:23,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-16 12:11:23,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-16 12:11:23,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:11:23,137 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:23,145 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:11:23,145 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:11:23,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:11:23 BasicIcfg [2022-11-16 12:11:23,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:11:23,153 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:11:23,153 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:11:23,153 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:11:23,154 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:11:07" (3/4) ... [2022-11-16 12:11:23,158 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:11:23,168 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-16 12:11:23,177 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-16 12:11:23,177 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 12:11:23,178 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:11:23,223 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:11:23,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:11:23,225 INFO L158 Benchmark]: Toolchain (without parser) took 16960.83ms. Allocated memory was 155.2MB in the beginning and 352.3MB in the end (delta: 197.1MB). Free memory was 119.2MB in the beginning and 300.7MB in the end (delta: -181.6MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2022-11-16 12:11:23,226 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 86.0MB. Free memory is still 41.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:11:23,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 713.16ms. Allocated memory is still 155.2MB. Free memory was 118.9MB in the beginning and 120.4MB in the end (delta: -1.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:11:23,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.84ms. Allocated memory is still 155.2MB. Free memory was 120.4MB in the beginning and 118.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:11:23,227 INFO L158 Benchmark]: Boogie Preprocessor took 61.39ms. Allocated memory is still 155.2MB. Free memory was 118.3MB in the beginning and 116.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:11:23,228 INFO L158 Benchmark]: RCFGBuilder took 590.64ms. Allocated memory is still 155.2MB. Free memory was 116.8MB in the beginning and 103.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:11:23,228 INFO L158 Benchmark]: TraceAbstraction took 15441.24ms. Allocated memory was 155.2MB in the beginning and 352.3MB in the end (delta: 197.1MB). Free memory was 102.7MB in the beginning and 302.8MB in the end (delta: -200.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:11:23,229 INFO L158 Benchmark]: Witness Printer took 71.01ms. Allocated memory is still 352.3MB. Free memory was 302.8MB in the beginning and 300.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:11:23,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 86.0MB. Free memory is still 41.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 713.16ms. Allocated memory is still 155.2MB. Free memory was 118.9MB in the beginning and 120.4MB in the end (delta: -1.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.84ms. Allocated memory is still 155.2MB. Free memory was 120.4MB in the beginning and 118.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.39ms. Allocated memory is still 155.2MB. Free memory was 118.3MB in the beginning and 116.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 590.64ms. Allocated memory is still 155.2MB. Free memory was 116.8MB in the beginning and 103.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15441.24ms. Allocated memory was 155.2MB in the beginning and 352.3MB in the end (delta: 197.1MB). Free memory was 102.7MB in the beginning and 302.8MB in the end (delta: -200.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 71.01ms. Allocated memory is still 352.3MB. Free memory was 302.8MB in the beginning and 300.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.2s, OverallIterations: 16, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1171 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1171 mSDsluCounter, 880 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 89 IncrementalHoareTripleChecker+Unchecked, 696 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1232 IncrementalHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 184 mSDtfsCounter, 1232 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 713 GetRequests, 452 SyntacticMatches, 11 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=688occurred in iteration=13, InterpolantAutomatonStates: 178, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 1568 NumberOfCodeBlocks, 1498 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1703 ConstructedInterpolants, 4 QuantifiedInterpolants, 11362 SizeOfPredicates, 38 NumberOfNonLiveVariables, 601 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 25 InterpolantComputations, 13 PerfectInterpolantSequences, 2787/3507 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:11:23,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624495d-4964-4783-99b6-84820802a06b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE