./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc --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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- 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-5e519f3 [2022-11-02 20:55:28,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:55:28,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:55:28,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:55:28,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:55:28,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:55:28,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:55:28,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:55:28,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:55:28,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:55:28,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:55:28,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:55:28,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:55:28,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:55:28,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:55:28,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:55:28,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:55:28,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:55:28,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:55:28,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:55:28,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:55:28,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:55:28,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:55:28,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:55:28,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:55:28,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:55:28,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:55:28,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:55:28,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:55:28,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:55:28,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:55:28,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:55:28,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:55:28,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:55:28,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:55:28,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:55:28,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:55:28,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:55:28,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:55:28,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:55:28,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:55:28,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:55:28,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:55:28,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:55:28,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:55:28,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:55:28,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:55:28,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:55:28,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:55:28,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:55:28,619 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:55:28,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:55:28,620 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:55:28,620 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:55:28,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:55:28,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:55:28,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:55:28,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:55:28,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:55:28,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:55:28,622 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:55:28,623 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:55:28,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:55:28,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:55:28,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:55:28,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:55:28,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:55:28,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:55:28,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:28,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:55:28,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:55:28,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:55:28,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:55:28,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:55:28,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:55:28,627 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_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2022-11-02 20:55:28,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:55:29,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:55:29,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:55:29,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:55:29,033 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:55:29,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-02 20:55:29,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/data/b0006e2f9/e74f83f3b9bb4ae48a0709323551bfa6/FLAG2b15f7866 [2022-11-02 20:55:29,806 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:55:29,811 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-02 20:55:29,828 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/data/b0006e2f9/e74f83f3b9bb4ae48a0709323551bfa6/FLAG2b15f7866 [2022-11-02 20:55:29,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/data/b0006e2f9/e74f83f3b9bb4ae48a0709323551bfa6 [2022-11-02 20:55:29,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:55:29,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:55:29,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:29,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:55:29,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:55:29,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:29" (1/1) ... [2022-11-02 20:55:29,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0eb7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:29, skipping insertion in model container [2022-11-02 20:55:29,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:29" (1/1) ... [2022-11-02 20:55:30,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:55:30,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:55:30,598 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:55:30,599 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:55:30,600 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:55:30,600 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:55:30,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:30,642 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:55:30,685 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:55:30,700 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:55:30,701 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:55:30,702 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:55:30,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:30,792 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:55:30,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30 WrapperNode [2022-11-02 20:55:30,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:30,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:30,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:55:30,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:55:30,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30" (1/1) ... [2022-11-02 20:55:30,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30" (1/1) ... [2022-11-02 20:55:30,889 INFO L138 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 137 [2022-11-02 20:55:30,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:30,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:55:30,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:55:30,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:55:30,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30" (1/1) ... [2022-11-02 20:55:30,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30" (1/1) ... [2022-11-02 20:55:30,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30" (1/1) ... [2022-11-02 20:55:30,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30" (1/1) ... [2022-11-02 20:55:30,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30" (1/1) ... [2022-11-02 20:55:30,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30" (1/1) ... [2022-11-02 20:55:30,953 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30" (1/1) ... [2022-11-02 20:55:30,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30" (1/1) ... [2022-11-02 20:55:30,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:55:30,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:55:30,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:55:30,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:55:30,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30" (1/1) ... [2022-11-02 20:55:30,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:30,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:30,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:55:31,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:55:31,043 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-02 20:55:31,044 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-02 20:55:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:55:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:55:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:55:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:55:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:55:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:55:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:55:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:55:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:55:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:55:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:55:31,048 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:55:31,331 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:55:31,334 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:55:31,830 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:55:31,840 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:55:31,841 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:55:31,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:31 BoogieIcfgContainer [2022-11-02 20:55:31,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:55:31,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:55:31,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:55:31,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:55:31,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:55:29" (1/3) ... [2022-11-02 20:55:31,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496c0e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:31, skipping insertion in model container [2022-11-02 20:55:31,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:30" (2/3) ... [2022-11-02 20:55:31,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496c0e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:31, skipping insertion in model container [2022-11-02 20:55:31,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:31" (3/3) ... [2022-11-02 20:55:31,854 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2022-11-02 20:55:31,863 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:55:31,875 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:55:31,875 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-02 20:55:31,876 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:55:32,014 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:55:32,059 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:55:32,077 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 217 transitions, 444 flow [2022-11-02 20:55:32,081 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 217 transitions, 444 flow [2022-11-02 20:55:32,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 217 transitions, 444 flow [2022-11-02 20:55:32,255 INFO L130 PetriNetUnfolder]: 15/215 cut-off events. [2022-11-02 20:55:32,256 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:55:32,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 215 events. 15/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 516 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2022-11-02 20:55:32,274 INFO L118 LiptonReduction]: Number of co-enabled transitions 7600 [2022-11-02 20:56:45,032 WARN L234 SmtUtils]: Spent 22.31s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:56:55,517 WARN L234 SmtUtils]: Spent 10.48s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:57:13,193 WARN L234 SmtUtils]: Spent 17.67s on a formula simplification. DAG size of input: 182 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:57:22,219 WARN L234 SmtUtils]: Spent 9.02s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:57:44,381 WARN L234 SmtUtils]: Spent 21.95s on a formula simplification. DAG size of input: 182 DAG size of output: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:57:54,389 WARN L234 SmtUtils]: Spent 10.00s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:58:15,432 WARN L234 SmtUtils]: Spent 21.04s on a formula simplification. DAG size of input: 182 DAG size of output: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:58:29,074 WARN L234 SmtUtils]: Spent 13.64s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:58:29,079 INFO L133 LiptonReduction]: Checked pairs total: 7697 [2022-11-02 20:58:29,080 INFO L135 LiptonReduction]: Total number of compositions: 230 [2022-11-02 20:58:29,090 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 92 flow [2022-11-02 20:58:29,150 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:29,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:58:29,175 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=FINITE_AUTOMATA, 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;@176ccb13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:58:29,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-02 20:58:29,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:29,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:58:29,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:29,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:58:29,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:58:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash 733218, now seen corresponding path program 1 times [2022-11-02 20:58:29,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:29,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079984325] [2022-11-02 20:58:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:29,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:29,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:29,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079984325] [2022-11-02 20:58:29,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079984325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:29,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:29,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:58:29,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904290621] [2022-11-02 20:58:29,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:29,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:58:29,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:29,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:58:29,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:58:29,638 INFO L87 Difference]: Start difference. First operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:30,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:30,141 INFO L93 Difference]: Finished difference Result 272 states and 702 transitions. [2022-11-02 20:58:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:58:30,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 20:58:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:30,165 INFO L225 Difference]: With dead ends: 272 [2022-11-02 20:58:30,169 INFO L226 Difference]: Without dead ends: 272 [2022-11-02 20:58:30,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:58:30,183 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:30,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:58:30,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-02 20:58:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2022-11-02 20:58:30,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 243 states have (on average 2.888888888888889) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 702 transitions. [2022-11-02 20:58:30,289 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 702 transitions. Word has length 3 [2022-11-02 20:58:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:30,289 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 702 transitions. [2022-11-02 20:58:30,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 702 transitions. [2022-11-02 20:58:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:58:30,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:30,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:58:30,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:58:30,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:58:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:30,294 INFO L85 PathProgramCache]: Analyzing trace with hash 22733918, now seen corresponding path program 1 times [2022-11-02 20:58:30,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:30,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7277162] [2022-11-02 20:58:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:30,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:30,394 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:30,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566939316] [2022-11-02 20:58:30,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:30,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:30,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:30,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:30,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:58:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:30,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:58:30,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:30,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:30,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:30,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7277162] [2022-11-02 20:58:30,677 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:30,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566939316] [2022-11-02 20:58:30,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566939316] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:30,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:58:30,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-02 20:58:30,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974871608] [2022-11-02 20:58:30,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:30,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:58:30,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:30,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:58:30,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:58:30,681 INFO L87 Difference]: Start difference. First operand 272 states and 702 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:31,479 INFO L93 Difference]: Finished difference Result 279 states and 714 transitions. [2022-11-02 20:58:31,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:58:31,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:58:31,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:31,489 INFO L225 Difference]: With dead ends: 279 [2022-11-02 20:58:31,489 INFO L226 Difference]: Without dead ends: 279 [2022-11-02 20:58:31,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:58:31,491 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:31,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:58:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-02 20:58:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2022-11-02 20:58:31,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 246 states have (on average 2.902439024390244) internal successors, (714), 274 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 714 transitions. [2022-11-02 20:58:31,521 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 714 transitions. Word has length 4 [2022-11-02 20:58:31,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:31,522 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 714 transitions. [2022-11-02 20:58:31,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:31,522 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 714 transitions. [2022-11-02 20:58:31,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:58:31,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:31,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:58:31,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:58:31,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:31,742 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:58:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:31,743 INFO L85 PathProgramCache]: Analyzing trace with hash 22734035, now seen corresponding path program 1 times [2022-11-02 20:58:31,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:31,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095052064] [2022-11-02 20:58:31,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:31,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:31,800 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:31,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563569110] [2022-11-02 20:58:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:31,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:31,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:31,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:31,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:58:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:32,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:58:32,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:32,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:32,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:32,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095052064] [2022-11-02 20:58:32,118 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:32,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563569110] [2022-11-02 20:58:32,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563569110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:32,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:32,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:58:32,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212385066] [2022-11-02 20:58:32,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:32,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:58:32,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:32,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:58:32,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:58:32,126 INFO L87 Difference]: Start difference. First operand 275 states and 714 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:32,590 INFO L93 Difference]: Finished difference Result 538 states and 1403 transitions. [2022-11-02 20:58:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:58:32,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:58:32,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:32,600 INFO L225 Difference]: With dead ends: 538 [2022-11-02 20:58:32,600 INFO L226 Difference]: Without dead ends: 538 [2022-11-02 20:58:32,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:58:32,602 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 68 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:32,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 0 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:58:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-02 20:58:32,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 274. [2022-11-02 20:58:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 246 states have (on average 2.886178861788618) internal successors, (710), 273 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 710 transitions. [2022-11-02 20:58:32,648 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 710 transitions. Word has length 4 [2022-11-02 20:58:32,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:32,649 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 710 transitions. [2022-11-02 20:58:32,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:32,649 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 710 transitions. [2022-11-02 20:58:32,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:58:32,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:32,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:58:32,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:32,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:32,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:58:32,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:32,878 INFO L85 PathProgramCache]: Analyzing trace with hash 22733892, now seen corresponding path program 1 times [2022-11-02 20:58:32,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:32,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805516002] [2022-11-02 20:58:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:32,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:32,920 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:32,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911253454] [2022-11-02 20:58:32,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:32,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:32,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:32,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:32,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:58:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:33,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:58:33,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:58:33,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:33,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:33,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805516002] [2022-11-02 20:58:33,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:33,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911253454] [2022-11-02 20:58:33,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911253454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:33,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:33,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:58:33,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799737638] [2022-11-02 20:58:33,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:33,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:58:33,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:33,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:58:33,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:58:33,202 INFO L87 Difference]: Start difference. First operand 274 states and 710 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:33,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:33,623 INFO L93 Difference]: Finished difference Result 280 states and 717 transitions. [2022-11-02 20:58:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:58:33,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:58:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:33,627 INFO L225 Difference]: With dead ends: 280 [2022-11-02 20:58:33,630 INFO L226 Difference]: Without dead ends: 280 [2022-11-02 20:58:33,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:58:33,632 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:33,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:58:33,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-02 20:58:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-11-02 20:58:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8452380952380953) internal successors, (717), 279 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:33,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 717 transitions. [2022-11-02 20:58:33,663 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 717 transitions. Word has length 4 [2022-11-02 20:58:33,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:33,663 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 717 transitions. [2022-11-02 20:58:33,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:33,664 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 717 transitions. [2022-11-02 20:58:33,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:58:33,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:33,664 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-11-02 20:58:33,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:33,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:33,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:58:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:33,866 INFO L85 PathProgramCache]: Analyzing trace with hash 913907863, now seen corresponding path program 1 times [2022-11-02 20:58:33,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:33,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765883771] [2022-11-02 20:58:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:33,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:33,984 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:33,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053919810] [2022-11-02 20:58:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:33,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:33,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:33,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:34,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:58:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:34,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:58:34,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:58:34,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:58:34,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:34,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765883771] [2022-11-02 20:58:34,719 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:34,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053919810] [2022-11-02 20:58:34,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053919810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:34,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:58:34,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 20:58:34,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918072997] [2022-11-02 20:58:34,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:34,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:58:34,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:34,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:58:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:58:34,730 INFO L87 Difference]: Start difference. First operand 280 states and 717 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:35,997 INFO L93 Difference]: Finished difference Result 308 states and 741 transitions. [2022-11-02 20:58:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:58:35,998 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:58:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:36,000 INFO L225 Difference]: With dead ends: 308 [2022-11-02 20:58:36,000 INFO L226 Difference]: Without dead ends: 308 [2022-11-02 20:58:36,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:58:36,002 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:36,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:58:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-02 20:58:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 292. [2022-11-02 20:58:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 264 states have (on average 2.8068181818181817) internal successors, (741), 291 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 741 transitions. [2022-11-02 20:58:36,014 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 741 transitions. Word has length 10 [2022-11-02 20:58:36,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:36,015 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 741 transitions. [2022-11-02 20:58:36,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 741 transitions. [2022-11-02 20:58:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:58:36,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:36,016 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 1, 1, 1] [2022-11-02 20:58:36,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-02 20:58:36,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:36,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:58:36,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:36,229 INFO L85 PathProgramCache]: Analyzing trace with hash -327230953, now seen corresponding path program 2 times [2022-11-02 20:58:36,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:36,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307932188] [2022-11-02 20:58:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:36,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:36,411 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:36,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628799296] [2022-11-02 20:58:36,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:58:36,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:36,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:36,413 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:36,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:58:37,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:58:37,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:37,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:58:37,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:58:37,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:58:37,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:37,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307932188] [2022-11-02 20:58:37,960 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:37,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628799296] [2022-11-02 20:58:37,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628799296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:37,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:58:37,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:58:37,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045636562] [2022-11-02 20:58:37,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:37,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:58:37,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:37,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:58:37,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:58:37,962 INFO L87 Difference]: Start difference. First operand 292 states and 741 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:41,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:41,185 INFO L93 Difference]: Finished difference Result 356 states and 789 transitions. [2022-11-02 20:58:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:58:41,188 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:58:41,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:41,191 INFO L225 Difference]: With dead ends: 356 [2022-11-02 20:58:41,191 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 20:58:41,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:58:41,192 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 108 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:41,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 0 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 20:58:41,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 20:58:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 316. [2022-11-02 20:58:41,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 288 states have (on average 2.7395833333333335) internal successors, (789), 315 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:41,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 789 transitions. [2022-11-02 20:58:41,207 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 789 transitions. Word has length 16 [2022-11-02 20:58:41,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:41,207 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 789 transitions. [2022-11-02 20:58:41,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 789 transitions. [2022-11-02 20:58:41,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:58:41,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:41,209 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-02 20:58:41,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:41,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:41,429 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:58:41,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:41,429 INFO L85 PathProgramCache]: Analyzing trace with hash -428937961, now seen corresponding path program 3 times [2022-11-02 20:58:41,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:41,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781135211] [2022-11-02 20:58:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:41,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:41,705 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:41,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715420869] [2022-11-02 20:58:41,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:58:41,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:41,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:41,707 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:41,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:58:42,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:58:42,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:42,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:58:42,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-02 20:58:42,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-02 20:58:45,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:45,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781135211] [2022-11-02 20:58:45,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:45,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715420869] [2022-11-02 20:58:45,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715420869] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:45,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:58:45,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2022-11-02 20:58:45,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067341298] [2022-11-02 20:58:45,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:45,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:58:45,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:45,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:58:45,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=21, Unknown=1, NotChecked=0, Total=42 [2022-11-02 20:58:45,771 INFO L87 Difference]: Start difference. First operand 316 states and 789 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:45,839 INFO L93 Difference]: Finished difference Result 315 states and 767 transitions. [2022-11-02 20:58:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:58:45,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-02 20:58:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:45,843 INFO L225 Difference]: With dead ends: 315 [2022-11-02 20:58:45,843 INFO L226 Difference]: Without dead ends: 315 [2022-11-02 20:58:45,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=20, Invalid=21, Unknown=1, NotChecked=0, Total=42 [2022-11-02 20:58:45,845 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:45,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2022-11-02 20:58:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-02 20:58:45,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-11-02 20:58:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 288 states have (on average 2.6631944444444446) internal successors, (767), 314 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 767 transitions. [2022-11-02 20:58:45,859 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 767 transitions. Word has length 28 [2022-11-02 20:58:45,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:45,859 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 767 transitions. [2022-11-02 20:58:45,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 767 transitions. [2022-11-02 20:58:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:58:45,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:45,861 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-02 20:58:45,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:46,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:46,087 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:58:46,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:46,088 INFO L85 PathProgramCache]: Analyzing trace with hash -428937910, now seen corresponding path program 1 times [2022-11-02 20:58:46,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:46,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661886210] [2022-11-02 20:58:46,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:46,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:46,442 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:46,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246490876] [2022-11-02 20:58:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:46,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:46,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:46,448 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:46,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:58:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 5511 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:58:48,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:58:49,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:58:49,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:49,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661886210] [2022-11-02 20:58:49,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:49,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246490876] [2022-11-02 20:58:49,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246490876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:49,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:58:49,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-11-02 20:58:49,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698857596] [2022-11-02 20:58:49,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:49,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:58:49,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:49,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:58:49,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:58:49,954 INFO L87 Difference]: Start difference. First operand 315 states and 767 transitions. Second operand has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:52,874 INFO L93 Difference]: Finished difference Result 359 states and 791 transitions. [2022-11-02 20:58:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:58:52,875 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-02 20:58:52,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:52,877 INFO L225 Difference]: With dead ends: 359 [2022-11-02 20:58:52,877 INFO L226 Difference]: Without dead ends: 359 [2022-11-02 20:58:52,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:58:52,879 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 114 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:52,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 0 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-02 20:58:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-02 20:58:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 331. [2022-11-02 20:58:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 304 states have (on average 2.601973684210526) internal successors, (791), 330 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 791 transitions. [2022-11-02 20:58:52,892 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 791 transitions. Word has length 28 [2022-11-02 20:58:52,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:52,893 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 791 transitions. [2022-11-02 20:58:52,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:52,912 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 791 transitions. [2022-11-02 20:58:52,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:58:52,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:52,913 INFO L195 NwaCegarLoop]: trace histogram [31, 2, 1, 1, 1] [2022-11-02 20:58:52,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:53,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:58:53,129 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:58:53,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:53,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1675505846, now seen corresponding path program 2 times [2022-11-02 20:58:53,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:53,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206569548] [2022-11-02 20:58:53,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:53,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:53,550 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:53,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547940386] [2022-11-02 20:58:53,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:58:53,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:53,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:53,552 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:53,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:59:07,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:59:07,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:07,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 7383 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:59:07,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 32 proven. 32 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-02 20:59:07,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:09,218 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 32 proven. 32 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-02 20:59:09,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:09,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206569548] [2022-11-02 20:59:09,219 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:59:09,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547940386] [2022-11-02 20:59:09,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547940386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:09,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:59:09,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-02 20:59:09,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825918627] [2022-11-02 20:59:09,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:09,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:59:09,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:09,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:59:09,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:59:09,225 INFO L87 Difference]: Start difference. First operand 331 states and 791 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:10,172 INFO L93 Difference]: Finished difference Result 328 states and 759 transitions. [2022-11-02 20:59:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:59:10,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 20:59:10,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:10,175 INFO L225 Difference]: With dead ends: 328 [2022-11-02 20:59:10,175 INFO L226 Difference]: Without dead ends: 328 [2022-11-02 20:59:10,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:59:10,176 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 145 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:10,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 0 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 106 Invalid, 0 Unknown, 6 Unchecked, 0.8s Time] [2022-11-02 20:59:10,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-02 20:59:10,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 297. [2022-11-02 20:59:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 273 states have (on average 2.663003663003663) internal successors, (727), 296 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 727 transitions. [2022-11-02 20:59:10,190 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 727 transitions. Word has length 36 [2022-11-02 20:59:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:10,190 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 727 transitions. [2022-11-02 20:59:10,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:10,191 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 727 transitions. [2022-11-02 20:59:10,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 20:59:10,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:10,192 INFO L195 NwaCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:10,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:10,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:10,409 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:10,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 218852850, now seen corresponding path program 1 times [2022-11-02 20:59:10,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:10,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958790771] [2022-11-02 20:59:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:10,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:10,822 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:59:10,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225764617] [2022-11-02 20:59:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:10,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:10,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:10,824 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:10,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:59:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:14,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 7176 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:59:14,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-02 20:59:14,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-02 20:59:14,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:14,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958790771] [2022-11-02 20:59:14,251 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:59:14,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225764617] [2022-11-02 20:59:14,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225764617] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:14,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:59:14,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-02 20:59:14,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966280473] [2022-11-02 20:59:14,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:14,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:59:14,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:14,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:59:14,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:59:14,255 INFO L87 Difference]: Start difference. First operand 297 states and 727 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:14,688 INFO L93 Difference]: Finished difference Result 393 states and 826 transitions. [2022-11-02 20:59:14,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:59:14,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-02 20:59:14,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:14,692 INFO L225 Difference]: With dead ends: 393 [2022-11-02 20:59:14,692 INFO L226 Difference]: Without dead ends: 393 [2022-11-02 20:59:14,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:59:14,693 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:14,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:14,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-02 20:59:14,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-11-02 20:59:14,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 369 states have (on average 2.238482384823848) internal successors, (826), 392 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:14,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 826 transitions. [2022-11-02 20:59:14,711 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 826 transitions. Word has length 39 [2022-11-02 20:59:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:14,711 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 826 transitions. [2022-11-02 20:59:14,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 826 transitions. [2022-11-02 20:59:14,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-02 20:59:14,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:14,716 INFO L195 NwaCegarLoop]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:14,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:14,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:59:14,941 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:14,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:14,942 INFO L85 PathProgramCache]: Analyzing trace with hash -397740327, now seen corresponding path program 2 times [2022-11-02 20:59:14,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:14,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688474057] [2022-11-02 20:59:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:14,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:16,400 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:59:16,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043230770] [2022-11-02 20:59:16,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:59:16,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:16,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:16,411 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:16,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:59:25,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:59:25,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:25,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 28356 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:59:25,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-11-02 20:59:26,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-11-02 20:59:26,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:26,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688474057] [2022-11-02 20:59:26,374 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:59:26,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043230770] [2022-11-02 20:59:26,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043230770] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:26,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:59:26,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-02 20:59:26,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046924812] [2022-11-02 20:59:26,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:26,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:59:26,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:26,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:59:26,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:26,376 INFO L87 Difference]: Start difference. First operand 393 states and 826 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:27,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:27,473 INFO L93 Difference]: Finished difference Result 585 states and 1024 transitions. [2022-11-02 20:59:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:59:27,474 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-11-02 20:59:27,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:27,477 INFO L225 Difference]: With dead ends: 585 [2022-11-02 20:59:27,477 INFO L226 Difference]: Without dead ends: 585 [2022-11-02 20:59:27,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:27,478 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:27,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:59:27,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-02 20:59:27,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-11-02 20:59:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 561 states have (on average 1.8253119429590017) internal successors, (1024), 584 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1024 transitions. [2022-11-02 20:59:27,541 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1024 transitions. Word has length 135 [2022-11-02 20:59:27,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:27,542 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 1024 transitions. [2022-11-02 20:59:27,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:27,543 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1024 transitions. [2022-11-02 20:59:27,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-02 20:59:27,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:27,549 INFO L195 NwaCegarLoop]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:27,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:27,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:59:27,777 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:27,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:27,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1735799641, now seen corresponding path program 3 times [2022-11-02 20:59:27,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:27,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877731014] [2022-11-02 20:59:27,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:27,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:31,247 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:59:31,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409848188] [2022-11-02 20:59:31,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:59:31,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:31,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:31,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:31,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da46058-8408-416a-8c40-dc73196ec9eb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process