./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:32:19,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:32:19,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:32:19,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:32:19,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:32:19,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:32:19,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:32:19,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:32:19,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:32:19,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:32:19,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:32:19,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:32:19,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:32:19,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:32:19,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:32:19,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:32:19,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:32:19,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:32:19,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:32:19,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:32:19,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:32:19,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:32:19,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:32:19,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:32:19,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:32:19,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:32:19,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:32:19,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:32:19,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:32:19,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:32:19,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:32:19,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:32:19,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:32:19,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:32:19,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:32:19,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:32:19,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:32:19,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:32:19,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:32:19,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:32:19,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:32:19,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:32:19,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:32:19,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:32:19,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:32:19,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:32:19,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:32:19,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:32:19,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:32:19,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:32:19,812 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:32:19,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:32:19,812 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:32:19,813 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:32:19,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:32:19,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:32:19,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:32:19,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:32:19,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:32:19,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:32:19,815 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:32:19,815 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:32:19,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:32:19,816 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:32:19,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:32:19,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:32:19,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:32:19,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:32:19,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:32:19,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:32:19,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:32:19,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:32:19,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:32:19,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:32:19,819 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:32:19,819 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:32:19,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:32:19,820 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_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2022-11-18 18:32:20,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:32:20,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:32:20,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:32:20,160 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:32:20,161 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:32:20,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-11-18 18:32:20,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/data/71f589f92/8cec38f0f13449f9b3657d2f5a10a6f7/FLAG267e13c88 [2022-11-18 18:32:20,808 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:32:20,808 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-11-18 18:32:20,855 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/data/71f589f92/8cec38f0f13449f9b3657d2f5a10a6f7/FLAG267e13c88 [2022-11-18 18:32:21,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/data/71f589f92/8cec38f0f13449f9b3657d2f5a10a6f7 [2022-11-18 18:32:21,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:32:21,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:32:21,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:32:21,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:32:21,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:32:21,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:21,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d45967e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21, skipping insertion in model container [2022-11-18 18:32:21,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:21,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:32:21,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:32:21,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:32:21,793 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:32:21,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:32:21,888 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:32:21,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21 WrapperNode [2022-11-18 18:32:21,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:32:21,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:32:21,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:32:21,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:32:21,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:21,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:21,944 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-18 18:32:21,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:32:21,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:32:21,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:32:21,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:32:21,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:21,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:21,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:21,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:21,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:21,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:21,993 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:21,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:21,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:32:21,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:32:21,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:32:21,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:32:22,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21" (1/1) ... [2022-11-18 18:32:22,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:32:22,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:22,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:32:22,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:32:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:32:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:32:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:32:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:32:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:32:22,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:32:22,112 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 18:32:22,112 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 18:32:22,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:32:22,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:32:22,115 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:32:22,337 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:32:22,339 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:32:22,608 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:32:22,618 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:32:22,620 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:32:22,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:32:22 BoogieIcfgContainer [2022-11-18 18:32:22,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:32:22,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:32:22,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:32:22,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:32:22,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:32:21" (1/3) ... [2022-11-18 18:32:22,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a86bfdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:32:22, skipping insertion in model container [2022-11-18 18:32:22,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:21" (2/3) ... [2022-11-18 18:32:22,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a86bfdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:32:22, skipping insertion in model container [2022-11-18 18:32:22,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:32:22" (3/3) ... [2022-11-18 18:32:22,639 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2022-11-18 18:32:22,652 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:32:22,664 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:32:22,664 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 18:32:22,664 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:32:22,764 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:32:22,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions, 179 flow [2022-11-18 18:32:22,886 INFO L130 PetriNetUnfolder]: 4/86 cut-off events. [2022-11-18 18:32:22,886 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:32:22,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 4/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-18 18:32:22,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 87 transitions, 179 flow [2022-11-18 18:32:22,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 86 transitions, 175 flow [2022-11-18 18:32:22,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:32:22,922 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;@3e6f44ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:32:22,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-18 18:32:22,934 INFO L130 PetriNetUnfolder]: 1/19 cut-off events. [2022-11-18 18:32:22,942 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:32:22,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:22,943 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:22,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:22,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:22,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1677450047, now seen corresponding path program 1 times [2022-11-18 18:32:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:22,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849701099] [2022-11-18 18:32:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:22,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:23,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:23,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849701099] [2022-11-18 18:32:23,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849701099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:23,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:23,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:32:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913090593] [2022-11-18 18:32:23,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:23,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:32:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:23,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:32:23,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:23,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-18 18:32:23,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:23,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:23,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-18 18:32:23,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:23,527 INFO L130 PetriNetUnfolder]: 1/90 cut-off events. [2022-11-18 18:32:23,546 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:32:23,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 90 events. 1/90 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 62. Up to 14 conditions per place. [2022-11-18 18:32:23,548 INFO L137 encePairwiseOnDemand]: 77/87 looper letters, 16 selfloop transitions, 4 changer transitions 1/90 dead transitions. [2022-11-18 18:32:23,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 223 flow [2022-11-18 18:32:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:32:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:32:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2022-11-18 18:32:23,581 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8781609195402299 [2022-11-18 18:32:23,582 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2022-11-18 18:32:23,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2022-11-18 18:32:23,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:23,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2022-11-18 18:32:23,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:23,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:23,615 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:23,625 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 175 flow. Second operand 5 states and 382 transitions. [2022-11-18 18:32:23,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 223 flow [2022-11-18 18:32:23,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:32:23,635 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 198 flow [2022-11-18 18:32:23,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2022-11-18 18:32:23,647 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 6 predicate places. [2022-11-18 18:32:23,650 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 198 flow [2022-11-18 18:32:23,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:23,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:23,651 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:23,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:32:23,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:23,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1414112580, now seen corresponding path program 1 times [2022-11-18 18:32:23,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:23,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676197479] [2022-11-18 18:32:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:23,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:23,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:23,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676197479] [2022-11-18 18:32:23,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676197479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:23,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:23,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:32:23,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988479325] [2022-11-18 18:32:23,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:23,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:32:23,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:23,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:32:23,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:23,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-18 18:32:23,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:23,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:23,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-18 18:32:23,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:23,904 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2022-11-18 18:32:23,904 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:32:23,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 88 events. 1/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 86. Up to 7 conditions per place. [2022-11-18 18:32:23,905 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 8 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2022-11-18 18:32:23,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 228 flow [2022-11-18 18:32:23,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:32:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:32:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2022-11-18 18:32:23,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8482758620689655 [2022-11-18 18:32:23,911 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 369 transitions. [2022-11-18 18:32:23,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 369 transitions. [2022-11-18 18:32:23,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:23,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 369 transitions. [2022-11-18 18:32:23,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:23,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:23,924 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:23,925 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 198 flow. Second operand 5 states and 369 transitions. [2022-11-18 18:32:23,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 85 transitions, 228 flow [2022-11-18 18:32:23,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 85 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:32:23,930 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 216 flow [2022-11-18 18:32:23,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2022-11-18 18:32:23,931 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2022-11-18 18:32:23,932 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 216 flow [2022-11-18 18:32:23,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:23,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:23,933 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:23,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:32:23,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:23,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash 887817208, now seen corresponding path program 1 times [2022-11-18 18:32:23,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:23,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274556159] [2022-11-18 18:32:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:23,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:24,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274556159] [2022-11-18 18:32:24,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274556159] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:24,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145057146] [2022-11-18 18:32:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:24,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:24,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:24,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:24,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:32:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:24,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:32:24,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:24,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:24,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145057146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:24,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:24,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:32:24,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002303313] [2022-11-18 18:32:24,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:24,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:32:24,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:24,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:32:24,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:32:24,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-18 18:32:24,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:24,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:24,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-18 18:32:24,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:24,552 INFO L130 PetriNetUnfolder]: 1/87 cut-off events. [2022-11-18 18:32:24,552 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-18 18:32:24,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 87 events. 1/87 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 12. Up to 6 conditions per place. [2022-11-18 18:32:24,553 INFO L137 encePairwiseOnDemand]: 82/87 looper letters, 12 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2022-11-18 18:32:24,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 87 transitions, 254 flow [2022-11-18 18:32:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:32:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:32:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 516 transitions. [2022-11-18 18:32:24,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8472906403940886 [2022-11-18 18:32:24,557 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 516 transitions. [2022-11-18 18:32:24,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 516 transitions. [2022-11-18 18:32:24,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:24,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 516 transitions. [2022-11-18 18:32:24,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:24,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:24,573 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:24,573 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 216 flow. Second operand 7 states and 516 transitions. [2022-11-18 18:32:24,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 87 transitions, 254 flow [2022-11-18 18:32:24,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 87 transitions, 242 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:32:24,577 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 212 flow [2022-11-18 18:32:24,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=212, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2022-11-18 18:32:24,579 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 10 predicate places. [2022-11-18 18:32:24,579 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 212 flow [2022-11-18 18:32:24,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:24,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:24,580 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:24,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:32:24,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:24,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:24,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash -988423937, now seen corresponding path program 1 times [2022-11-18 18:32:24,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:24,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326143916] [2022-11-18 18:32:24,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:24,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:25,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:25,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326143916] [2022-11-18 18:32:25,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326143916] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:25,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131435897] [2022-11-18 18:32:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:25,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:25,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:25,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:25,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:32:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:25,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:32:25,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:25,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:25,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131435897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:25,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:32:25,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 18:32:25,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849538513] [2022-11-18 18:32:25,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:25,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:32:25,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:25,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:32:25,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:32:25,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-18 18:32:25,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:25,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:25,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-18 18:32:25,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:25,378 INFO L130 PetriNetUnfolder]: 1/95 cut-off events. [2022-11-18 18:32:25,384 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-18 18:32:25,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 95 events. 1/95 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 2/92 useless extension candidates. Maximal degree in co-relation 74. Up to 7 conditions per place. [2022-11-18 18:32:25,387 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 17 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2022-11-18 18:32:25,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 95 transitions, 302 flow [2022-11-18 18:32:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:32:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:32:25,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2022-11-18 18:32:25,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2022-11-18 18:32:25,391 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2022-11-18 18:32:25,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2022-11-18 18:32:25,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:25,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2022-11-18 18:32:25,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.11111111111111) internal successors, (667), 9 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:25,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:25,402 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:25,402 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 212 flow. Second operand 9 states and 667 transitions. [2022-11-18 18:32:25,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 95 transitions, 302 flow [2022-11-18 18:32:25,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 289 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-18 18:32:25,422 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 259 flow [2022-11-18 18:32:25,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=259, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2022-11-18 18:32:25,426 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 17 predicate places. [2022-11-18 18:32:25,426 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 259 flow [2022-11-18 18:32:25,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:25,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:25,429 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:25,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:25,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:25,635 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:25,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:25,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2045090657, now seen corresponding path program 2 times [2022-11-18 18:32:25,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:25,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665935632] [2022-11-18 18:32:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:25,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:25,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:25,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665935632] [2022-11-18 18:32:25,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665935632] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:25,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236041664] [2022-11-18 18:32:25,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:32:25,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:25,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:25,863 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:25,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:32:26,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:32:26,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:32:26,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:32:26,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:26,115 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 [2022-11-18 18:32:26,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:26,543 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 [2022-11-18 18:32:26,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-11-18 18:32:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 18:32:26,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:26,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236041664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:26,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:26,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2022-11-18 18:32:26,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17597245] [2022-11-18 18:32:26,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:26,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:32:26,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:26,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:32:26,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:32:26,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 87 [2022-11-18 18:32:26,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 259 flow. Second operand has 9 states, 9 states have (on average 61.333333333333336) internal successors, (552), 9 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:26,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:26,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 87 [2022-11-18 18:32:26,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:26,908 INFO L130 PetriNetUnfolder]: 41/234 cut-off events. [2022-11-18 18:32:26,908 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 18:32:26,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 234 events. 41/234 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 947 event pairs, 20 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 313. Up to 92 conditions per place. [2022-11-18 18:32:26,913 INFO L137 encePairwiseOnDemand]: 78/87 looper letters, 24 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2022-11-18 18:32:26,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 97 transitions, 343 flow [2022-11-18 18:32:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:32:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:32:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 514 transitions. [2022-11-18 18:32:26,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7385057471264368 [2022-11-18 18:32:26,917 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 514 transitions. [2022-11-18 18:32:26,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 514 transitions. [2022-11-18 18:32:26,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:26,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 514 transitions. [2022-11-18 18:32:26,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 64.25) internal successors, (514), 8 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:26,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:26,923 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:26,923 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 259 flow. Second operand 8 states and 514 transitions. [2022-11-18 18:32:26,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 97 transitions, 343 flow [2022-11-18 18:32:26,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 97 transitions, 329 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-18 18:32:26,936 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 293 flow [2022-11-18 18:32:26,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=293, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2022-11-18 18:32:26,941 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 23 predicate places. [2022-11-18 18:32:26,942 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 293 flow [2022-11-18 18:32:26,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 61.333333333333336) internal successors, (552), 9 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:26,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:26,943 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:26,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:27,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:27,152 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:27,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1026699263, now seen corresponding path program 1 times [2022-11-18 18:32:27,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:27,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594570888] [2022-11-18 18:32:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:27,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:27,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:27,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594570888] [2022-11-18 18:32:27,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594570888] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:27,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206274508] [2022-11-18 18:32:27,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:27,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:27,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:27,342 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:27,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:32:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:27,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:32:27,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:27,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:27,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206274508] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:27,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:32:27,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 18:32:27,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213685813] [2022-11-18 18:32:27,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:27,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:32:27,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:27,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:32:27,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:27,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-18 18:32:27,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 293 flow. Second operand has 18 states, 18 states have (on average 74.05555555555556) internal successors, (1333), 18 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:27,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:27,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-18 18:32:27,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:28,029 INFO L130 PetriNetUnfolder]: 2/168 cut-off events. [2022-11-18 18:32:28,029 INFO L131 PetriNetUnfolder]: For 67/68 co-relation queries the response was YES. [2022-11-18 18:32:28,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 168 events. 2/168 cut-off events. For 67/68 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 265 event pairs, 0 based on Foata normal form. 4/162 useless extension candidates. Maximal degree in co-relation 273. Up to 9 conditions per place. [2022-11-18 18:32:28,031 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 33 selfloop transitions, 21 changer transitions 0/128 dead transitions. [2022-11-18 18:32:28,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 128 transitions, 563 flow [2022-11-18 18:32:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:32:28,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:32:28,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1549 transitions. [2022-11-18 18:32:28,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8478379857690203 [2022-11-18 18:32:28,037 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1549 transitions. [2022-11-18 18:32:28,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1549 transitions. [2022-11-18 18:32:28,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:28,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1549 transitions. [2022-11-18 18:32:28,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 73.76190476190476) internal successors, (1549), 21 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:28,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 87.0) internal successors, (1914), 22 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:28,055 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 87.0) internal successors, (1914), 22 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:28,055 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 293 flow. Second operand 21 states and 1549 transitions. [2022-11-18 18:32:28,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 128 transitions, 563 flow [2022-11-18 18:32:28,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 128 transitions, 553 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:32:28,065 INFO L231 Difference]: Finished difference. Result has 130 places, 106 transitions, 447 flow [2022-11-18 18:32:28,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=447, PETRI_PLACES=130, PETRI_TRANSITIONS=106} [2022-11-18 18:32:28,069 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 44 predicate places. [2022-11-18 18:32:28,069 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 106 transitions, 447 flow [2022-11-18 18:32:28,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 74.05555555555556) internal successors, (1333), 18 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:28,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:28,075 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:28,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:28,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:28,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:28,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:28,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1125676865, now seen corresponding path program 2 times [2022-11-18 18:32:28,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:28,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472866586] [2022-11-18 18:32:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:28,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:28,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:28,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472866586] [2022-11-18 18:32:28,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472866586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:28,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402397367] [2022-11-18 18:32:28,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:32:28,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:28,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:28,867 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:28,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:32:28,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:32:28,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:32:28,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:32:28,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:29,033 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 [2022-11-18 18:32:29,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:29,596 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 [2022-11-18 18:32:29,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-11-18 18:32:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-18 18:32:29,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:29,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402397367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:29,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:29,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 24 [2022-11-18 18:32:29,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671826360] [2022-11-18 18:32:29,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:29,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:32:29,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:29,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:32:29,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:32:29,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 87 [2022-11-18 18:32:29,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 106 transitions, 447 flow. Second operand has 9 states, 9 states have (on average 61.44444444444444) internal successors, (553), 9 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:29,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:29,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 87 [2022-11-18 18:32:29,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:29,945 INFO L130 PetriNetUnfolder]: 42/313 cut-off events. [2022-11-18 18:32:29,946 INFO L131 PetriNetUnfolder]: For 171/190 co-relation queries the response was YES. [2022-11-18 18:32:29,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 313 events. 42/313 cut-off events. For 171/190 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1244 event pairs, 23 based on Foata normal form. 8/284 useless extension candidates. Maximal degree in co-relation 411. Up to 88 conditions per place. [2022-11-18 18:32:29,952 INFO L137 encePairwiseOnDemand]: 78/87 looper letters, 24 selfloop transitions, 9 changer transitions 2/111 dead transitions. [2022-11-18 18:32:29,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 111 transitions, 529 flow [2022-11-18 18:32:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:32:29,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:32:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 515 transitions. [2022-11-18 18:32:29,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7399425287356322 [2022-11-18 18:32:29,956 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 515 transitions. [2022-11-18 18:32:29,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 515 transitions. [2022-11-18 18:32:29,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:29,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 515 transitions. [2022-11-18 18:32:29,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 64.375) internal successors, (515), 8 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:29,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:29,961 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:29,962 INFO L175 Difference]: Start difference. First operand has 130 places, 106 transitions, 447 flow. Second operand 8 states and 515 transitions. [2022-11-18 18:32:29,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 111 transitions, 529 flow [2022-11-18 18:32:29,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 111 transitions, 485 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-11-18 18:32:29,969 INFO L231 Difference]: Finished difference. Result has 131 places, 106 transitions, 427 flow [2022-11-18 18:32:29,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=427, PETRI_PLACES=131, PETRI_TRANSITIONS=106} [2022-11-18 18:32:29,971 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 45 predicate places. [2022-11-18 18:32:29,971 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 106 transitions, 427 flow [2022-11-18 18:32:29,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 61.44444444444444) internal successors, (553), 9 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:29,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:29,972 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:29,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:30,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:30,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:30,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:30,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1240098145, now seen corresponding path program 1 times [2022-11-18 18:32:30,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:30,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206350146] [2022-11-18 18:32:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:30,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:30,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:30,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206350146] [2022-11-18 18:32:30,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206350146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:30,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174050355] [2022-11-18 18:32:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:30,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:30,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:30,706 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:30,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:32:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:30,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:32:30,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:30,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:31,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174050355] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:31,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:32:31,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 18:32:31,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385040641] [2022-11-18 18:32:31,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:31,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:32:31,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:31,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:32:31,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:32:31,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-18 18:32:31,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 106 transitions, 427 flow. Second operand has 23 states, 23 states have (on average 74.30434782608695) internal successors, (1709), 23 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:31,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:31,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-18 18:32:31,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:31,812 INFO L130 PetriNetUnfolder]: 2/187 cut-off events. [2022-11-18 18:32:31,812 INFO L131 PetriNetUnfolder]: For 187/188 co-relation queries the response was YES. [2022-11-18 18:32:31,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 187 events. 2/187 cut-off events. For 187/188 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 259 event pairs, 0 based on Foata normal form. 3/182 useless extension candidates. Maximal degree in co-relation 377. Up to 12 conditions per place. [2022-11-18 18:32:31,814 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 45 selfloop transitions, 30 changer transitions 0/149 dead transitions. [2022-11-18 18:32:31,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 149 transitions, 775 flow [2022-11-18 18:32:31,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:32:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 18:32:31,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2208 transitions. [2022-11-18 18:32:31,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8459770114942529 [2022-11-18 18:32:31,822 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2208 transitions. [2022-11-18 18:32:31,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2208 transitions. [2022-11-18 18:32:31,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:31,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2208 transitions. [2022-11-18 18:32:31,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 73.6) internal successors, (2208), 30 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:31,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 87.0) internal successors, (2697), 31 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:31,839 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 87.0) internal successors, (2697), 31 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:31,839 INFO L175 Difference]: Start difference. First operand has 131 places, 106 transitions, 427 flow. Second operand 30 states and 2208 transitions. [2022-11-18 18:32:31,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 149 transitions, 775 flow [2022-11-18 18:32:31,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 759 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 18:32:31,846 INFO L231 Difference]: Finished difference. Result has 157 places, 116 transitions, 577 flow [2022-11-18 18:32:31,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=577, PETRI_PLACES=157, PETRI_TRANSITIONS=116} [2022-11-18 18:32:31,849 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 71 predicate places. [2022-11-18 18:32:31,849 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 116 transitions, 577 flow [2022-11-18 18:32:31,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 74.30434782608695) internal successors, (1709), 23 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:31,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:31,851 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:31,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:32,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 18:32:32,057 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:32,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash -2104647484, now seen corresponding path program 2 times [2022-11-18 18:32:32,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:32,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654091888] [2022-11-18 18:32:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:32,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 18:32:32,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:32,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654091888] [2022-11-18 18:32:32,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654091888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:32,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:32,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:32:32,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707690378] [2022-11-18 18:32:32,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:32,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:32:32,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:32:32,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:32:32,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 87 [2022-11-18 18:32:32,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 116 transitions, 577 flow. Second operand has 10 states, 10 states have (on average 59.4) internal successors, (594), 10 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:32,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:32,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 87 [2022-11-18 18:32:32,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:32,954 INFO L130 PetriNetUnfolder]: 93/418 cut-off events. [2022-11-18 18:32:32,954 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-11-18 18:32:32,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 418 events. 93/418 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1572 event pairs, 32 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 614. Up to 105 conditions per place. [2022-11-18 18:32:32,957 INFO L137 encePairwiseOnDemand]: 75/87 looper letters, 35 selfloop transitions, 10 changer transitions 22/154 dead transitions. [2022-11-18 18:32:32,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 154 transitions, 801 flow [2022-11-18 18:32:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:32:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:32:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 706 transitions. [2022-11-18 18:32:32,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7377220480668757 [2022-11-18 18:32:32,963 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 706 transitions. [2022-11-18 18:32:32,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 706 transitions. [2022-11-18 18:32:32,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:32,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 706 transitions. [2022-11-18 18:32:32,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 64.18181818181819) internal successors, (706), 11 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:32,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:32,972 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:32,972 INFO L175 Difference]: Start difference. First operand has 157 places, 116 transitions, 577 flow. Second operand 11 states and 706 transitions. [2022-11-18 18:32:32,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 154 transitions, 801 flow [2022-11-18 18:32:32,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 154 transitions, 755 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-18 18:32:32,980 INFO L231 Difference]: Finished difference. Result has 154 places, 118 transitions, 578 flow [2022-11-18 18:32:32,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=578, PETRI_PLACES=154, PETRI_TRANSITIONS=118} [2022-11-18 18:32:32,982 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 68 predicate places. [2022-11-18 18:32:32,982 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 118 transitions, 578 flow [2022-11-18 18:32:32,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.4) internal successors, (594), 10 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:32,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:32,983 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:32,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:32:32,984 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:32,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash 412252961, now seen corresponding path program 1 times [2022-11-18 18:32:32,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:32,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516862108] [2022-11-18 18:32:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:32,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 18:32:33,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:33,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516862108] [2022-11-18 18:32:33,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516862108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:33,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:33,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:32:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571771279] [2022-11-18 18:32:33,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:33,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:32:33,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:33,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:32:33,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:32:33,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 87 [2022-11-18 18:32:33,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 118 transitions, 578 flow. Second operand has 10 states, 10 states have (on average 59.5) internal successors, (595), 10 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:33,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:33,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 87 [2022-11-18 18:32:33,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:33,864 INFO L130 PetriNetUnfolder]: 30/269 cut-off events. [2022-11-18 18:32:33,865 INFO L131 PetriNetUnfolder]: For 316/335 co-relation queries the response was YES. [2022-11-18 18:32:33,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 269 events. 30/269 cut-off events. For 316/335 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 844 event pairs, 6 based on Foata normal form. 8/266 useless extension candidates. Maximal degree in co-relation 652. Up to 30 conditions per place. [2022-11-18 18:32:33,867 INFO L137 encePairwiseOnDemand]: 75/87 looper letters, 30 selfloop transitions, 12 changer transitions 10/137 dead transitions. [2022-11-18 18:32:33,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 137 transitions, 770 flow [2022-11-18 18:32:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:32:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:32:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 688 transitions. [2022-11-18 18:32:33,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7189132706374086 [2022-11-18 18:32:33,872 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 688 transitions. [2022-11-18 18:32:33,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 688 transitions. [2022-11-18 18:32:33,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:33,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 688 transitions. [2022-11-18 18:32:33,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 62.54545454545455) internal successors, (688), 11 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:33,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:33,880 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:33,880 INFO L175 Difference]: Start difference. First operand has 154 places, 118 transitions, 578 flow. Second operand 11 states and 688 transitions. [2022-11-18 18:32:33,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 137 transitions, 770 flow [2022-11-18 18:32:33,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 137 transitions, 745 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-18 18:32:33,889 INFO L231 Difference]: Finished difference. Result has 160 places, 120 transitions, 616 flow [2022-11-18 18:32:33,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=616, PETRI_PLACES=160, PETRI_TRANSITIONS=120} [2022-11-18 18:32:33,891 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 74 predicate places. [2022-11-18 18:32:33,892 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 120 transitions, 616 flow [2022-11-18 18:32:33,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.5) internal successors, (595), 10 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:33,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:33,893 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:33,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:32:33,893 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:33,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash -538601876, now seen corresponding path program 1 times [2022-11-18 18:32:33,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:33,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619269338] [2022-11-18 18:32:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:33,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 18:32:34,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:34,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619269338] [2022-11-18 18:32:34,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619269338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:34,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:34,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:32:34,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839079823] [2022-11-18 18:32:34,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:34,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:32:34,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:34,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:32:34,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:32:34,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 87 [2022-11-18 18:32:34,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 120 transitions, 616 flow. Second operand has 13 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:34,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:34,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 87 [2022-11-18 18:32:34,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:35,563 INFO L130 PetriNetUnfolder]: 102/398 cut-off events. [2022-11-18 18:32:35,563 INFO L131 PetriNetUnfolder]: For 473/476 co-relation queries the response was YES. [2022-11-18 18:32:35,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 398 events. 102/398 cut-off events. For 473/476 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1448 event pairs, 5 based on Foata normal form. 8/404 useless extension candidates. Maximal degree in co-relation 956. Up to 44 conditions per place. [2022-11-18 18:32:35,568 INFO L137 encePairwiseOnDemand]: 74/87 looper letters, 60 selfloop transitions, 16 changer transitions 24/177 dead transitions. [2022-11-18 18:32:35,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 177 transitions, 1054 flow [2022-11-18 18:32:35,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:32:35,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:32:35,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1062 transitions. [2022-11-18 18:32:35,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6424682395644283 [2022-11-18 18:32:35,573 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1062 transitions. [2022-11-18 18:32:35,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1062 transitions. [2022-11-18 18:32:35,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:35,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1062 transitions. [2022-11-18 18:32:35,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 55.89473684210526) internal successors, (1062), 19 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 87.0) internal successors, (1740), 20 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,590 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 87.0) internal successors, (1740), 20 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,591 INFO L175 Difference]: Start difference. First operand has 160 places, 120 transitions, 616 flow. Second operand 19 states and 1062 transitions. [2022-11-18 18:32:35,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 177 transitions, 1054 flow [2022-11-18 18:32:35,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 177 transitions, 1011 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-18 18:32:35,601 INFO L231 Difference]: Finished difference. Result has 168 places, 119 transitions, 623 flow [2022-11-18 18:32:35,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=623, PETRI_PLACES=168, PETRI_TRANSITIONS=119} [2022-11-18 18:32:35,603 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 82 predicate places. [2022-11-18 18:32:35,603 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 119 transitions, 623 flow [2022-11-18 18:32:35,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:35,604 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:35,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:32:35,605 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:35,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:35,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1014950869, now seen corresponding path program 1 times [2022-11-18 18:32:35,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:35,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517846745] [2022-11-18 18:32:35,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:35,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:36,502 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 18:32:36,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:36,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517846745] [2022-11-18 18:32:36,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517846745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:36,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:36,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:32:36,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254830052] [2022-11-18 18:32:36,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:36,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:32:36,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:36,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:32:36,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:32:36,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 87 [2022-11-18 18:32:36,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 119 transitions, 623 flow. Second operand has 13 states, 13 states have (on average 50.69230769230769) internal successors, (659), 13 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:36,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:36,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 87 [2022-11-18 18:32:36,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:37,139 INFO L130 PetriNetUnfolder]: 76/347 cut-off events. [2022-11-18 18:32:37,139 INFO L131 PetriNetUnfolder]: For 413/414 co-relation queries the response was YES. [2022-11-18 18:32:37,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 347 events. 76/347 cut-off events. For 413/414 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1152 event pairs, 5 based on Foata normal form. 4/350 useless extension candidates. Maximal degree in co-relation 711. Up to 69 conditions per place. [2022-11-18 18:32:37,145 INFO L137 encePairwiseOnDemand]: 73/87 looper letters, 57 selfloop transitions, 21 changer transitions 5/158 dead transitions. [2022-11-18 18:32:37,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 158 transitions, 923 flow [2022-11-18 18:32:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:32:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:32:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 963 transitions. [2022-11-18 18:32:37,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6149425287356322 [2022-11-18 18:32:37,149 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 963 transitions. [2022-11-18 18:32:37,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 963 transitions. [2022-11-18 18:32:37,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:37,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 963 transitions. [2022-11-18 18:32:37,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 53.5) internal successors, (963), 18 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:37,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 87.0) internal successors, (1653), 19 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:37,159 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 87.0) internal successors, (1653), 19 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:37,159 INFO L175 Difference]: Start difference. First operand has 168 places, 119 transitions, 623 flow. Second operand 18 states and 963 transitions. [2022-11-18 18:32:37,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 158 transitions, 923 flow [2022-11-18 18:32:37,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 158 transitions, 860 flow, removed 6 selfloop flow, removed 15 redundant places. [2022-11-18 18:32:37,169 INFO L231 Difference]: Finished difference. Result has 165 places, 122 transitions, 632 flow [2022-11-18 18:32:37,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=632, PETRI_PLACES=165, PETRI_TRANSITIONS=122} [2022-11-18 18:32:37,172 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 79 predicate places. [2022-11-18 18:32:37,172 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 122 transitions, 632 flow [2022-11-18 18:32:37,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 50.69230769230769) internal successors, (659), 13 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:37,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:37,173 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:37,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:32:37,174 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:37,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash -100052501, now seen corresponding path program 1 times [2022-11-18 18:32:37,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:37,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470205935] [2022-11-18 18:32:37,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:37,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 18:32:38,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:38,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470205935] [2022-11-18 18:32:38,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470205935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:38,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:38,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:32:38,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039396292] [2022-11-18 18:32:38,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:38,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:32:38,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:32:38,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:32:38,139 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 87 [2022-11-18 18:32:38,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 122 transitions, 632 flow. Second operand has 13 states, 13 states have (on average 50.76923076923077) internal successors, (660), 13 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:38,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:38,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 87 [2022-11-18 18:32:38,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:38,931 INFO L130 PetriNetUnfolder]: 105/430 cut-off events. [2022-11-18 18:32:38,931 INFO L131 PetriNetUnfolder]: For 405/406 co-relation queries the response was YES. [2022-11-18 18:32:38,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 430 events. 105/430 cut-off events. For 405/406 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1750 event pairs, 33 based on Foata normal form. 7/431 useless extension candidates. Maximal degree in co-relation 894. Up to 89 conditions per place. [2022-11-18 18:32:38,936 INFO L137 encePairwiseOnDemand]: 72/87 looper letters, 46 selfloop transitions, 17 changer transitions 36/174 dead transitions. [2022-11-18 18:32:38,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 174 transitions, 994 flow [2022-11-18 18:32:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:32:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:32:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 928 transitions. [2022-11-18 18:32:38,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2022-11-18 18:32:38,940 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 928 transitions. [2022-11-18 18:32:38,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 928 transitions. [2022-11-18 18:32:38,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:38,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 928 transitions. [2022-11-18 18:32:38,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.588235294117645) internal successors, (928), 17 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:38,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:38,947 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:38,948 INFO L175 Difference]: Start difference. First operand has 165 places, 122 transitions, 632 flow. Second operand 17 states and 928 transitions. [2022-11-18 18:32:38,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 174 transitions, 994 flow [2022-11-18 18:32:38,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 174 transitions, 913 flow, removed 12 selfloop flow, removed 14 redundant places. [2022-11-18 18:32:38,958 INFO L231 Difference]: Finished difference. Result has 173 places, 121 transitions, 624 flow [2022-11-18 18:32:38,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=624, PETRI_PLACES=173, PETRI_TRANSITIONS=121} [2022-11-18 18:32:38,960 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 87 predicate places. [2022-11-18 18:32:38,961 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 121 transitions, 624 flow [2022-11-18 18:32:38,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 50.76923076923077) internal successors, (660), 13 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:38,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:38,962 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:38,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:32:38,964 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:38,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1398706057, now seen corresponding path program 1 times [2022-11-18 18:32:38,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:38,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553050563] [2022-11-18 18:32:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:38,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 18:32:39,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:39,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553050563] [2022-11-18 18:32:39,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553050563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:39,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:39,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:32:39,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124821567] [2022-11-18 18:32:39,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:39,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:32:39,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:39,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:32:39,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:32:39,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 87 [2022-11-18 18:32:39,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 121 transitions, 624 flow. Second operand has 13 states, 13 states have (on average 50.76923076923077) internal successors, (660), 13 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:39,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:39,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 87 [2022-11-18 18:32:39,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:40,361 INFO L130 PetriNetUnfolder]: 75/373 cut-off events. [2022-11-18 18:32:40,362 INFO L131 PetriNetUnfolder]: For 462/468 co-relation queries the response was YES. [2022-11-18 18:32:40,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 373 events. 75/373 cut-off events. For 462/468 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1357 event pairs, 5 based on Foata normal form. 6/377 useless extension candidates. Maximal degree in co-relation 823. Up to 91 conditions per place. [2022-11-18 18:32:40,365 INFO L137 encePairwiseOnDemand]: 73/87 looper letters, 33 selfloop transitions, 10 changer transitions 33/148 dead transitions. [2022-11-18 18:32:40,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 148 transitions, 875 flow [2022-11-18 18:32:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:32:40,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:32:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 907 transitions. [2022-11-18 18:32:40,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6132521974306964 [2022-11-18 18:32:40,368 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 907 transitions. [2022-11-18 18:32:40,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 907 transitions. [2022-11-18 18:32:40,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:40,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 907 transitions. [2022-11-18 18:32:40,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 53.35294117647059) internal successors, (907), 17 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:40,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:40,375 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:40,375 INFO L175 Difference]: Start difference. First operand has 173 places, 121 transitions, 624 flow. Second operand 17 states and 907 transitions. [2022-11-18 18:32:40,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 148 transitions, 875 flow [2022-11-18 18:32:40,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 148 transitions, 820 flow, removed 6 selfloop flow, removed 17 redundant places. [2022-11-18 18:32:40,384 INFO L231 Difference]: Finished difference. Result has 168 places, 102 transitions, 534 flow [2022-11-18 18:32:40,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=534, PETRI_PLACES=168, PETRI_TRANSITIONS=102} [2022-11-18 18:32:40,385 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 82 predicate places. [2022-11-18 18:32:40,385 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 102 transitions, 534 flow [2022-11-18 18:32:40,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 50.76923076923077) internal successors, (660), 13 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:40,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:40,386 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:40,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:32:40,387 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:32:40,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:40,387 INFO L85 PathProgramCache]: Analyzing trace with hash 483211269, now seen corresponding path program 2 times [2022-11-18 18:32:40,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:40,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749450940] [2022-11-18 18:32:40,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:40,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 18:32:41,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:41,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749450940] [2022-11-18 18:32:41,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749450940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:41,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:41,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:32:41,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095816986] [2022-11-18 18:32:41,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:41,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:32:41,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:41,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:32:41,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:32:41,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 87 [2022-11-18 18:32:41,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 102 transitions, 534 flow. Second operand has 13 states, 13 states have (on average 52.61538461538461) internal successors, (684), 13 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:41,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:41,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 87 [2022-11-18 18:32:41,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:41,556 INFO L130 PetriNetUnfolder]: 31/204 cut-off events. [2022-11-18 18:32:41,557 INFO L131 PetriNetUnfolder]: For 323/326 co-relation queries the response was YES. [2022-11-18 18:32:41,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 204 events. 31/204 cut-off events. For 323/326 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 321 event pairs, 11 based on Foata normal form. 6/203 useless extension candidates. Maximal degree in co-relation 549. Up to 39 conditions per place. [2022-11-18 18:32:41,559 INFO L137 encePairwiseOnDemand]: 77/87 looper letters, 0 selfloop transitions, 0 changer transitions 111/111 dead transitions. [2022-11-18 18:32:41,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 111 transitions, 642 flow [2022-11-18 18:32:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:32:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:32:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 597 transitions. [2022-11-18 18:32:41,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6238244514106583 [2022-11-18 18:32:41,562 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 597 transitions. [2022-11-18 18:32:41,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 597 transitions. [2022-11-18 18:32:41,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:41,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 597 transitions. [2022-11-18 18:32:41,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 54.27272727272727) internal successors, (597), 11 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:41,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:41,595 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:41,595 INFO L175 Difference]: Start difference. First operand has 168 places, 102 transitions, 534 flow. Second operand 11 states and 597 transitions. [2022-11-18 18:32:41,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 111 transitions, 642 flow [2022-11-18 18:32:41,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 111 transitions, 588 flow, removed 6 selfloop flow, removed 19 redundant places. [2022-11-18 18:32:41,608 INFO L231 Difference]: Finished difference. Result has 137 places, 0 transitions, 0 flow [2022-11-18 18:32:41,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=137, PETRI_TRANSITIONS=0} [2022-11-18 18:32:41,609 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 51 predicate places. [2022-11-18 18:32:41,609 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 0 transitions, 0 flow [2022-11-18 18:32:41,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.61538461538461) internal successors, (684), 13 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:41,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2022-11-18 18:32:41,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-11-18 18:32:41,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-11-18 18:32:41,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-11-18 18:32:41,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2022-11-18 18:32:41,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-11-18 18:32:41,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-11-18 18:32:41,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-11-18 18:32:41,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-11-18 18:32:41,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:32:41,617 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:41,624 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 18:32:41,624 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:32:41,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:32:41 BasicIcfg [2022-11-18 18:32:41,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:32:41,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:32:41,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:32:41,633 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:32:41,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:32:22" (3/4) ... [2022-11-18 18:32:41,638 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 18:32:41,646 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-18 18:32:41,652 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-18 18:32:41,652 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-18 18:32:41,653 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 18:32:41,702 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:32:41,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:32:41,703 INFO L158 Benchmark]: Toolchain (without parser) took 20617.30ms. Allocated memory was 117.4MB in the beginning and 293.6MB in the end (delta: 176.2MB). Free memory was 79.9MB in the beginning and 258.0MB in the end (delta: -178.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:32:41,704 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 87.9MB in the beginning and 87.8MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:32:41,704 INFO L158 Benchmark]: CACSL2BoogieTranslator took 802.15ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 76.1MB in the end (delta: 3.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 18:32:41,705 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.20ms. Allocated memory is still 117.4MB. Free memory was 76.1MB in the beginning and 74.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:32:41,705 INFO L158 Benchmark]: Boogie Preprocessor took 51.99ms. Allocated memory is still 117.4MB. Free memory was 74.0MB in the beginning and 72.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:32:41,706 INFO L158 Benchmark]: RCFGBuilder took 625.61ms. Allocated memory is still 117.4MB. Free memory was 71.9MB in the beginning and 58.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 18:32:41,706 INFO L158 Benchmark]: TraceAbstraction took 19003.60ms. Allocated memory was 117.4MB in the beginning and 293.6MB in the end (delta: 176.2MB). Free memory was 57.9MB in the beginning and 261.1MB in the end (delta: -203.3MB). Peak memory consumption was 144.7MB. Max. memory is 16.1GB. [2022-11-18 18:32:41,707 INFO L158 Benchmark]: Witness Printer took 69.65ms. Allocated memory is still 293.6MB. Free memory was 260.1MB in the beginning and 258.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:32:41,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 87.9MB in the beginning and 87.8MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 802.15ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 76.1MB in the end (delta: 3.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.20ms. Allocated memory is still 117.4MB. Free memory was 76.1MB in the beginning and 74.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.99ms. Allocated memory is still 117.4MB. Free memory was 74.0MB in the beginning and 72.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 625.61ms. Allocated memory is still 117.4MB. Free memory was 71.9MB in the beginning and 58.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 19003.60ms. Allocated memory was 117.4MB in the beginning and 293.6MB in the end (delta: 176.2MB). Free memory was 57.9MB in the beginning and 261.1MB in the end (delta: -203.3MB). Peak memory consumption was 144.7MB. Max. memory is 16.1GB. * Witness Printer took 69.65ms. Allocated memory is still 293.6MB. Free memory was 260.1MB in the beginning and 258.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 112 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.8s, OverallIterations: 15, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1651 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1651 mSDsluCounter, 935 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 59 IncrementalHoareTripleChecker+Unchecked, 729 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1409 IncrementalHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 206 mSDtfsCounter, 1409 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 810 GetRequests, 511 SyntacticMatches, 11 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1402 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=632occurred in iteration=12, InterpolantAutomatonStates: 197, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 1584 NumberOfCodeBlocks, 1514 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1749 ConstructedInterpolants, 5 QuantifiedInterpolants, 11928 SizeOfPredicates, 39 NumberOfNonLiveVariables, 620 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 2462/3182 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 18:32:41,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486570f3-706e-43c1-b719-126836f08818/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE