./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:05:43,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:05:43,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:05:43,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:05:43,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:05:43,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:05:43,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:05:43,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:05:43,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:05:43,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:05:43,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:05:43,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:05:43,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:05:43,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:05:43,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:05:43,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:05:43,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:05:43,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:05:43,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:05:43,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:05:43,340 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:05:43,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:05:43,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:05:43,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:05:43,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:05:43,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:05:43,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:05:43,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:05:43,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:05:43,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:05:43,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:05:43,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:05:43,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:05:43,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:05:43,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:05:43,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:05:43,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:05:43,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:05:43,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:05:43,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:05:43,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:05:43,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:05:43,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-14 14:05:43,381 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:05:43,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:05:43,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:05:43,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:05:43,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 14:05:43,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 14:05:43,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:05:43,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:05:43,383 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:05:43,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:05:43,384 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 14:05:43,384 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:05:43,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:05:43,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 14:05:43,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:05:43,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 14:05:43,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 14:05:43,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 14:05:43,385 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 14:05:43,385 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 14:05:43,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:05:43,386 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:05:43,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 14:05:43,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:05:43,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:05:43,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 14:05:43,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:05:43,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:05:43,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 14:05:43,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 14:05:43,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:05:43,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 14:05:43,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 14:05:43,388 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 [2022-07-14 14:05:43,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:05:43,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:05:43,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:05:43,610 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:05:43,611 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:05:43,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2022-07-14 14:05:43,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05a2bd153/f2e5d2040dca4fb0af9c80ad9b694717/FLAGc63044f4f [2022-07-14 14:05:44,080 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:05:44,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2022-07-14 14:05:44,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05a2bd153/f2e5d2040dca4fb0af9c80ad9b694717/FLAGc63044f4f [2022-07-14 14:05:44,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05a2bd153/f2e5d2040dca4fb0af9c80ad9b694717 [2022-07-14 14:05:44,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:05:44,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:05:44,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:05:44,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:05:44,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:05:44,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:05:44" (1/1) ... [2022-07-14 14:05:44,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eda2fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44, skipping insertion in model container [2022-07-14 14:05:44,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:05:44" (1/1) ... [2022-07-14 14:05:44,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:05:44,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:05:44,460 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:44,461 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:44,461 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:44,462 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:44,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:05:44,491 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:05:44,514 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:44,515 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:44,515 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:44,525 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:44,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:05:44,564 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:05:44,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44 WrapperNode [2022-07-14 14:05:44,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:05:44,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:05:44,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:05:44,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:05:44,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44" (1/1) ... [2022-07-14 14:05:44,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44" (1/1) ... [2022-07-14 14:05:44,618 INFO L137 Inliner]: procedures = 272, calls = 38, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 166 [2022-07-14 14:05:44,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:05:44,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:05:44,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:05:44,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:05:44,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44" (1/1) ... [2022-07-14 14:05:44,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44" (1/1) ... [2022-07-14 14:05:44,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44" (1/1) ... [2022-07-14 14:05:44,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44" (1/1) ... [2022-07-14 14:05:44,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44" (1/1) ... [2022-07-14 14:05:44,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44" (1/1) ... [2022-07-14 14:05:44,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44" (1/1) ... [2022-07-14 14:05:44,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:05:44,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:05:44,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:05:44,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:05:44,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44" (1/1) ... [2022-07-14 14:05:44,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:05:44,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:05:44,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 14:05:44,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 14:05:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-14 14:05:44,729 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-14 14:05:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 14:05:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 14:05:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 14:05:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 14:05:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 14:05:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-14 14:05:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 14:05:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 14:05:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 14:05:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:05:44,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:05:44,732 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-14 14:05:44,848 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:05:44,849 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:05:45,106 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:05:45,112 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:05:45,112 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-14 14:05:45,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:05:45 BoogieIcfgContainer [2022-07-14 14:05:45,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:05:45,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 14:05:45,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 14:05:45,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 14:05:45,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 02:05:44" (1/3) ... [2022-07-14 14:05:45,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714c524d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:05:45, skipping insertion in model container [2022-07-14 14:05:45,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:44" (2/3) ... [2022-07-14 14:05:45,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714c524d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:05:45, skipping insertion in model container [2022-07-14 14:05:45,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:05:45" (3/3) ... [2022-07-14 14:05:45,122 INFO L111 eAbstractionObserver]: Analyzing ICFG 09-regions_23-evilcollapse_rc.i [2022-07-14 14:05:45,126 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-14 14:05:45,132 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 14:05:45,133 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-07-14 14:05:45,133 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-14 14:05:45,201 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-14 14:05:45,243 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:05:45,252 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 258 transitions, 526 flow [2022-07-14 14:05:45,254 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 258 transitions, 526 flow [2022-07-14 14:05:45,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 258 transitions, 526 flow [2022-07-14 14:05:45,306 INFO L129 PetriNetUnfolder]: 16/256 cut-off events. [2022-07-14 14:05:45,306 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-14 14:05:45,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 256 events. 16/256 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 408 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 197. Up to 2 conditions per place. [2022-07-14 14:05:45,319 INFO L116 LiptonReduction]: Number of co-enabled transitions 7600 [2022-07-14 14:06:17,840 WARN L233 SmtUtils]: Spent 13.25s on a formula simplification. DAG size of input: 188 DAG size of output: 186 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:06:25,706 WARN L233 SmtUtils]: Spent 7.86s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:06:36,757 WARN L233 SmtUtils]: Spent 11.05s on a formula simplification. DAG size of input: 188 DAG size of output: 186 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:06:54,075 WARN L233 SmtUtils]: Spent 12.40s on a formula simplification. DAG size of input: 190 DAG size of output: 188 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:07:00,390 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:07:11,837 WARN L233 SmtUtils]: Spent 11.45s on a formula simplification. DAG size of input: 188 DAG size of output: 187 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:07:16,967 INFO L131 LiptonReduction]: Checked pairs total: 8098 [2022-07-14 14:07:16,967 INFO L133 LiptonReduction]: Total number of compositions: 272 [2022-07-14 14:07:16,972 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 92 flow [2022-07-14 14:07:16,996 INFO L133 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) [2022-07-14 14:07:17,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:07:17,013 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@29d7acc1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42856ce7 [2022-07-14 14:07:17,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-07-14 14:07:17,016 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) [2022-07-14 14:07:17,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 14:07:17,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:17,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 14:07:17,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:17,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash 856508, now seen corresponding path program 1 times [2022-07-14 14:07:17,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:17,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437421562] [2022-07-14 14:07:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:17,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:07:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:07:17,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:17,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437421562] [2022-07-14 14:07:17,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437421562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:07:17,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:07:17,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:07:17,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187605818] [2022-07-14 14:07:17,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:07:17,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:07:17,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:07:17,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:07:17,234 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) [2022-07-14 14:07:17,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:17,580 INFO L93 Difference]: Finished difference Result 272 states and 702 transitions. [2022-07-14 14:07:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:07:17,583 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 [2022-07-14 14:07:17,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:17,591 INFO L225 Difference]: With dead ends: 272 [2022-07-14 14:07:17,591 INFO L226 Difference]: Without dead ends: 272 [2022-07-14 14:07:17,592 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 [2022-07-14 14:07:17,594 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:17,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 14:07:17,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-14 14:07:17,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2022-07-14 14:07:17,631 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) [2022-07-14 14:07:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 702 transitions. [2022-07-14 14:07:17,635 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 702 transitions. Word has length 3 [2022-07-14 14:07:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:17,635 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 702 transitions. [2022-07-14 14:07:17,635 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) [2022-07-14 14:07:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 702 transitions. [2022-07-14 14:07:17,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-14 14:07:17,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:17,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-14 14:07:17,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 14:07:17,636 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:17,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:17,637 INFO L85 PathProgramCache]: Analyzing trace with hash 26556128, now seen corresponding path program 1 times [2022-07-14 14:07:17,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:17,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005387452] [2022-07-14 14:07:17,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:17,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:17,681 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:17,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859435666] [2022-07-14 14:07:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:17,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:17,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:17,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:17,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 14:07:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:07:17,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:07:17,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:07:17,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:07:17,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:17,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005387452] [2022-07-14 14:07:17,859 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:17,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859435666] [2022-07-14 14:07:17,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859435666] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:17,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:17,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-07-14 14:07:17,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62662857] [2022-07-14 14:07:17,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:17,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 14:07:17,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:17,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:07:17,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:07:17,861 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) [2022-07-14 14:07:18,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:18,296 INFO L93 Difference]: Finished difference Result 279 states and 714 transitions. [2022-07-14 14:07:18,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:07:18,297 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 [2022-07-14 14:07:18,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:18,298 INFO L225 Difference]: With dead ends: 279 [2022-07-14 14:07:18,298 INFO L226 Difference]: Without dead ends: 279 [2022-07-14 14:07:18,298 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 [2022-07-14 14:07:18,299 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:18,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 14:07:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-07-14 14:07:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2022-07-14 14:07:18,309 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) [2022-07-14 14:07:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 714 transitions. [2022-07-14 14:07:18,311 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 714 transitions. Word has length 4 [2022-07-14 14:07:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:18,312 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 714 transitions. [2022-07-14 14:07:18,312 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) [2022-07-14 14:07:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 714 transitions. [2022-07-14 14:07:18,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-14 14:07:18,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:18,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-14 14:07:18,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-14 14:07:18,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:18,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:18,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash 26556049, now seen corresponding path program 1 times [2022-07-14 14:07:18,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:18,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371695578] [2022-07-14 14:07:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:18,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:18,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:18,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818206635] [2022-07-14 14:07:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:18,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:18,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:18,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:18,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 14:07:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:07:18,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:07:18,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:07:18,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:07:18,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:18,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371695578] [2022-07-14 14:07:18,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:18,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818206635] [2022-07-14 14:07:18,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818206635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:07:18,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:07:18,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:07:18,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932499857] [2022-07-14 14:07:18,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:07:18,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:07:18,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:18,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:07:18,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:07:18,682 INFO L87 Difference]: Start difference. First operand 275 states and 714 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) [2022-07-14 14:07:18,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:18,911 INFO L93 Difference]: Finished difference Result 281 states and 725 transitions. [2022-07-14 14:07:18,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:07:18,912 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 [2022-07-14 14:07:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:18,915 INFO L225 Difference]: With dead ends: 281 [2022-07-14 14:07:18,915 INFO L226 Difference]: Without dead ends: 281 [2022-07-14 14:07:18,915 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 [2022-07-14 14:07:18,921 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:18,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:07:18,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-07-14 14:07:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2022-07-14 14:07:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 252 states have (on average 2.876984126984127) internal successors, (725), 280 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 725 transitions. [2022-07-14 14:07:18,933 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 725 transitions. Word has length 4 [2022-07-14 14:07:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:18,933 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 725 transitions. [2022-07-14 14:07:18,933 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) [2022-07-14 14:07:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 725 transitions. [2022-07-14 14:07:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-14 14:07:18,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:18,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-14 14:07:18,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:19,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-14 14:07:19,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:19,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:19,148 INFO L85 PathProgramCache]: Analyzing trace with hash 26556245, now seen corresponding path program 1 times [2022-07-14 14:07:19,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:19,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388667404] [2022-07-14 14:07:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:19,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:19,193 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:19,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145245699] [2022-07-14 14:07:19,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:19,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:19,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:19,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:19,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 14:07:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:07:19,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:07:19,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:07:19,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:07:19,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:19,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388667404] [2022-07-14 14:07:19,419 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:19,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145245699] [2022-07-14 14:07:19,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145245699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:07:19,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:07:19,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:07:19,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282799686] [2022-07-14 14:07:19,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:07:19,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 14:07:19,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:19,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 14:07:19,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 14:07:19,421 INFO L87 Difference]: Start difference. First operand 281 states and 725 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) [2022-07-14 14:07:19,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:19,615 INFO L93 Difference]: Finished difference Result 280 states and 717 transitions. [2022-07-14 14:07:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 14:07:19,616 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 [2022-07-14 14:07:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:19,617 INFO L225 Difference]: With dead ends: 280 [2022-07-14 14:07:19,617 INFO L226 Difference]: Without dead ends: 280 [2022-07-14 14:07:19,618 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 [2022-07-14 14:07:19,618 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:19,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:07:19,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-07-14 14:07:19,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-07-14 14:07:19,625 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) [2022-07-14 14:07:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 717 transitions. [2022-07-14 14:07:19,626 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 717 transitions. Word has length 4 [2022-07-14 14:07:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:19,626 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 717 transitions. [2022-07-14 14:07:19,626 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) [2022-07-14 14:07:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 717 transitions. [2022-07-14 14:07:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 14:07:19,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:19,626 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-07-14 14:07:19,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:19,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:19,839 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)] === [2022-07-14 14:07:19,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:19,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1024137624, now seen corresponding path program 1 times [2022-07-14 14:07:19,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:19,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416304311] [2022-07-14 14:07:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:19,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:19,887 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:19,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673158169] [2022-07-14 14:07:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:19,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:19,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:19,898 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:19,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 14:07:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:07:20,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:07:20,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:07:20,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:07:20,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:20,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416304311] [2022-07-14 14:07:20,277 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:20,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673158169] [2022-07-14 14:07:20,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673158169] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:20,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:20,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-14 14:07:20,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731230153] [2022-07-14 14:07:20,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:20,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 14:07:20,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:20,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 14:07:20,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-14 14:07:20,278 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) [2022-07-14 14:07:21,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:21,117 INFO L93 Difference]: Finished difference Result 308 states and 741 transitions. [2022-07-14 14:07:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 14:07:21,117 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 [2022-07-14 14:07:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:21,119 INFO L225 Difference]: With dead ends: 308 [2022-07-14 14:07:21,119 INFO L226 Difference]: Without dead ends: 308 [2022-07-14 14:07:21,119 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 [2022-07-14 14:07:21,120 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:21,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-14 14:07:21,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-14 14:07:21,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 292. [2022-07-14 14:07:21,127 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) [2022-07-14 14:07:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 741 transitions. [2022-07-14 14:07:21,128 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 741 transitions. Word has length 10 [2022-07-14 14:07:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:21,129 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 741 transitions. [2022-07-14 14:07:21,129 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) [2022-07-14 14:07:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 741 transitions. [2022-07-14 14:07:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-14 14:07:21,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:21,130 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 1, 1, 1] [2022-07-14 14:07:21,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:21,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:21,339 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)] === [2022-07-14 14:07:21,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1498273560, now seen corresponding path program 2 times [2022-07-14 14:07:21,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:21,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006381637] [2022-07-14 14:07:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:21,444 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:21,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548416914] [2022-07-14 14:07:21,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:07:21,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:21,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:21,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:21,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 14:07:22,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 14:07:22,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:07:22,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 14:07:22,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:07:22,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:07:22,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:22,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006381637] [2022-07-14 14:07:22,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:22,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548416914] [2022-07-14 14:07:22,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548416914] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:22,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:22,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-14 14:07:22,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40728717] [2022-07-14 14:07:22,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:22,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-14 14:07:22,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:22,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-14 14:07:22,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-14 14:07:22,307 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) [2022-07-14 14:07:23,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:23,671 INFO L93 Difference]: Finished difference Result 356 states and 789 transitions. [2022-07-14 14:07:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-14 14:07:23,672 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 [2022-07-14 14:07:23,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:23,684 INFO L225 Difference]: With dead ends: 356 [2022-07-14 14:07:23,684 INFO L226 Difference]: Without dead ends: 356 [2022-07-14 14:07:23,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-14 14:07:23,685 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 124 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:23,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 0 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-14 14:07:23,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-07-14 14:07:23,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 316. [2022-07-14 14:07:23,691 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) [2022-07-14 14:07:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 789 transitions. [2022-07-14 14:07:23,692 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 789 transitions. Word has length 16 [2022-07-14 14:07:23,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:23,692 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 789 transitions. [2022-07-14 14:07:23,692 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) [2022-07-14 14:07:23,692 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 789 transitions. [2022-07-14 14:07:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-14 14:07:23,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:23,693 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-07-14 14:07:23,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:23,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:23,903 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)] === [2022-07-14 14:07:23,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash 276893160, now seen corresponding path program 3 times [2022-07-14 14:07:23,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:23,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530284970] [2022-07-14 14:07:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:23,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:24,124 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:24,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152245657] [2022-07-14 14:07:24,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 14:07:24,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:24,129 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:24,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-14 14:07:24,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-14 14:07:24,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:07:24,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 14:07:24,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-14 14:07:24,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-14 14:07:25,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:25,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530284970] [2022-07-14 14:07:25,050 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:25,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152245657] [2022-07-14 14:07:25,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152245657] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:25,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:25,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-07-14 14:07:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253735651] [2022-07-14 14:07:25,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:25,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 14:07:25,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:25,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 14:07:25,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-14 14:07:25,051 INFO L87 Difference]: Start difference. First operand 316 states and 789 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) [2022-07-14 14:07:27,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:27,706 INFO L93 Difference]: Finished difference Result 604 states and 1526 transitions. [2022-07-14 14:07:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 14:07:27,706 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 28 [2022-07-14 14:07:27,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:27,709 INFO L225 Difference]: With dead ends: 604 [2022-07-14 14:07:27,709 INFO L226 Difference]: Without dead ends: 604 [2022-07-14 14:07:27,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-07-14 14:07:27,709 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 110 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:27,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 0 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-14 14:07:27,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-07-14 14:07:27,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 339. [2022-07-14 14:07:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 312 states have (on average 2.6698717948717947) internal successors, (833), 338 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 833 transitions. [2022-07-14 14:07:27,717 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 833 transitions. Word has length 28 [2022-07-14 14:07:27,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:27,717 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 833 transitions. [2022-07-14 14:07:27,721 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) [2022-07-14 14:07:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 833 transitions. [2022-07-14 14:07:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-14 14:07:27,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:27,722 INFO L195 NwaCegarLoop]: trace histogram [24, 2, 1, 1, 1] [2022-07-14 14:07:27,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:27,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:27,936 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)] === [2022-07-14 14:07:27,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash -6239768, now seen corresponding path program 1 times [2022-07-14 14:07:27,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:27,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565260796] [2022-07-14 14:07:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:27,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:28,211 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:28,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144482654] [2022-07-14 14:07:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:28,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:28,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:28,213 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:28,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-14 14:07:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:07:29,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 5740 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-14 14:07:29,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 70 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-14 14:07:29,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 70 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-14 14:07:30,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:30,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565260796] [2022-07-14 14:07:30,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:30,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144482654] [2022-07-14 14:07:30,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144482654] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:30,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:30,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-07-14 14:07:30,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428539155] [2022-07-14 14:07:30,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:30,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-14 14:07:30,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:30,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-14 14:07:30,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-07-14 14:07:30,181 INFO L87 Difference]: Start difference. First operand 339 states and 833 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) [2022-07-14 14:07:31,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:31,977 INFO L93 Difference]: Finished difference Result 418 states and 881 transitions. [2022-07-14 14:07:31,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-14 14:07:31,978 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 29 [2022-07-14 14:07:31,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:31,980 INFO L225 Difference]: With dead ends: 418 [2022-07-14 14:07:31,980 INFO L226 Difference]: Without dead ends: 418 [2022-07-14 14:07:31,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-07-14 14:07:31,980 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 131 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:31,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 0 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-14 14:07:31,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-07-14 14:07:31,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 363. [2022-07-14 14:07:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 336 states have (on average 2.6220238095238093) internal successors, (881), 362 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 881 transitions. [2022-07-14 14:07:31,988 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 881 transitions. Word has length 29 [2022-07-14 14:07:31,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:31,988 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 881 transitions. [2022-07-14 14:07:31,988 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) [2022-07-14 14:07:31,988 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 881 transitions. [2022-07-14 14:07:31,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-14 14:07:31,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:31,989 INFO L195 NwaCegarLoop]: trace histogram [32, 2, 1, 1, 1] [2022-07-14 14:07:32,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:32,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:32,216 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)] === [2022-07-14 14:07:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:32,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1279663080, now seen corresponding path program 2 times [2022-07-14 14:07:32,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:32,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982552401] [2022-07-14 14:07:32,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:32,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:32,442 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:32,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358990083] [2022-07-14 14:07:32,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:07:32,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:32,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:32,444 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:32,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-14 14:07:41,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 14:07:41,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:07:41,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 7612 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 14:07:41,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-07-14 14:07:42,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:07:42,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:42,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982552401] [2022-07-14 14:07:42,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:42,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358990083] [2022-07-14 14:07:42,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358990083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:07:42,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:07:42,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 14:07:42,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484955159] [2022-07-14 14:07:42,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:07:42,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 14:07:42,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:42,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 14:07:42,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:07:42,073 INFO L87 Difference]: Start difference. First operand 363 states and 881 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:42,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:42,338 INFO L93 Difference]: Finished difference Result 360 states and 792 transitions. [2022-07-14 14:07:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:07:42,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 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 37 [2022-07-14 14:07:42,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:42,340 INFO L225 Difference]: With dead ends: 360 [2022-07-14 14:07:42,340 INFO L226 Difference]: Without dead ends: 360 [2022-07-14 14:07:42,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:07:42,341 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:42,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 14:07:42,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-14 14:07:42,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 329. [2022-07-14 14:07:42,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 305 states have (on average 2.4918032786885247) internal successors, (760), 328 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 760 transitions. [2022-07-14 14:07:42,348 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 760 transitions. Word has length 37 [2022-07-14 14:07:42,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:42,348 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 760 transitions. [2022-07-14 14:07:42,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:42,348 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 760 transitions. [2022-07-14 14:07:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-14 14:07:42,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:42,350 INFO L195 NwaCegarLoop]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:07:42,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:42,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-14 14:07:42,567 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:42,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1110206923, now seen corresponding path program 1 times [2022-07-14 14:07:42,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:42,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979901277] [2022-07-14 14:07:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:42,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:43,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:43,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726826947] [2022-07-14 14:07:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:43,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:43,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:43,004 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:43,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-14 14:07:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:07:46,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 14272 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:07:46,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-07-14 14:07:46,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-07-14 14:07:46,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:46,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979901277] [2022-07-14 14:07:46,561 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:46,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726826947] [2022-07-14 14:07:46,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726826947] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:46,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:46,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-07-14 14:07:46,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604482971] [2022-07-14 14:07:46,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:46,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 14:07:46,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:46,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 14:07:46,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-14 14:07:46,563 INFO L87 Difference]: Start difference. First operand 329 states and 760 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:46,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:46,893 INFO L93 Difference]: Finished difference Result 457 states and 892 transitions. [2022-07-14 14:07:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 14:07:46,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 71 [2022-07-14 14:07:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:46,895 INFO L225 Difference]: With dead ends: 457 [2022-07-14 14:07:46,895 INFO L226 Difference]: Without dead ends: 457 [2022-07-14 14:07:46,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-14 14:07:46,896 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:46,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 14:07:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-07-14 14:07:46,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2022-07-14 14:07:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 433 states have (on average 2.0600461893764432) internal successors, (892), 456 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 892 transitions. [2022-07-14 14:07:46,904 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 892 transitions. Word has length 71 [2022-07-14 14:07:46,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:46,905 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 892 transitions. [2022-07-14 14:07:46,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:46,905 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 892 transitions. [2022-07-14 14:07:46,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-14 14:07:46,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:46,909 INFO L195 NwaCegarLoop]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:07:46,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:47,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-14 14:07:47,123 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:47,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:47,124 INFO L85 PathProgramCache]: Analyzing trace with hash 241798895, now seen corresponding path program 2 times [2022-07-14 14:07:47,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:47,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658876297] [2022-07-14 14:07:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:47,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:48,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:48,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485724689] [2022-07-14 14:07:48,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:07:48,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:48,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:48,459 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:48,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-14 14:07:52,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 14:07:52,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:07:52,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 14:07:52,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17226 trivial. 0 not checked. [2022-07-14 14:07:52,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:07:52,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:52,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658876297] [2022-07-14 14:07:52,987 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:52,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485724689] [2022-07-14 14:07:52,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485724689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:07:52,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:07:52,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:07:52,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776721959] [2022-07-14 14:07:52,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:07:52,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:07:52,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:52,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:07:52,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:07:52,988 INFO L87 Difference]: Start difference. First operand 457 states and 892 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:53,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:53,093 INFO L93 Difference]: Finished difference Result 433 states and 831 transitions. [2022-07-14 14:07:53,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:07:53,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 199 [2022-07-14 14:07:53,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:53,095 INFO L225 Difference]: With dead ends: 433 [2022-07-14 14:07:53,095 INFO L226 Difference]: Without dead ends: 433 [2022-07-14 14:07:53,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:07:53,096 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:53,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:07:53,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-07-14 14:07:53,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2022-07-14 14:07:53,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 414 states have (on average 2.0072463768115942) internal successors, (831), 432 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:53,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 831 transitions. [2022-07-14 14:07:53,102 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 831 transitions. Word has length 199 [2022-07-14 14:07:53,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:53,103 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 831 transitions. [2022-07-14 14:07:53,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 831 transitions. [2022-07-14 14:07:53,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-14 14:07:53,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:53,105 INFO L195 NwaCegarLoop]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:07:53,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:53,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-14 14:07:53,319 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:53,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:53,320 INFO L85 PathProgramCache]: Analyzing trace with hash 241798833, now seen corresponding path program 1 times [2022-07-14 14:07:53,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:53,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028048529] [2022-07-14 14:07:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:53,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:54,688 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:54,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122496938] [2022-07-14 14:07:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:54,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:54,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:54,690 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:54,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-14 14:08:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:08:05,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 42512 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:08:05,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:08:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2022-07-14 14:08:05,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:08:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2022-07-14 14:08:06,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:08:06,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028048529] [2022-07-14 14:08:06,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:08:06,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122496938] [2022-07-14 14:08:06,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122496938] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:08:06,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:08:06,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-07-14 14:08:06,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954344245] [2022-07-14 14:08:06,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:08:06,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 14:08:06,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:08:06,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 14:08:06,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-14 14:08:06,228 INFO L87 Difference]: Start difference. First operand 433 states and 831 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:08:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:08:06,671 INFO L93 Difference]: Finished difference Result 561 states and 963 transitions. [2022-07-14 14:08:06,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 14:08:06,680 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 199 [2022-07-14 14:08:06,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:08:06,682 INFO L225 Difference]: With dead ends: 561 [2022-07-14 14:08:06,682 INFO L226 Difference]: Without dead ends: 561 [2022-07-14 14:08:06,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 385 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-14 14:08:06,683 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 14:08:06,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 14:08:06,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-14 14:08:06,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-07-14 14:08:06,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 542 states have (on average 1.7767527675276753) internal successors, (963), 560 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:08:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 963 transitions. [2022-07-14 14:08:06,692 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 963 transitions. Word has length 199 [2022-07-14 14:08:06,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:08:06,693 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 963 transitions. [2022-07-14 14:08:06,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:08:06,693 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 963 transitions. [2022-07-14 14:08:06,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-07-14 14:08:06,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:08:06,696 INFO L195 NwaCegarLoop]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:08:06,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-14 14:08:06,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-14 14:08:06,911 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:08:06,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:08:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1439665195, now seen corresponding path program 2 times [2022-07-14 14:08:06,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:08:06,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552187481] [2022-07-14 14:08:06,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:08:06,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:08:09,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:08:09,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24887317] [2022-07-14 14:08:09,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:08:09,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:08:09,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:08:09,076 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:08:09,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-14 14:08:18,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 14:08:18,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:08:18,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:08:18,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:08:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2022-07-14 14:08:18,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:08:18,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:08:18,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552187481] [2022-07-14 14:08:18,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:08:18,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24887317] [2022-07-14 14:08:18,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24887317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:08:18,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:08:18,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:08:18,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034285059] [2022-07-14 14:08:18,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:08:18,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:08:18,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:08:18,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:08:18,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:08:18,557 INFO L87 Difference]: Start difference. First operand 561 states and 963 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:08:18,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:08:18,719 INFO L93 Difference]: Finished difference Result 537 states and 902 transitions. [2022-07-14 14:08:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:08:18,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 327 [2022-07-14 14:08:18,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:08:18,722 INFO L225 Difference]: With dead ends: 537 [2022-07-14 14:08:18,722 INFO L226 Difference]: Without dead ends: 537 [2022-07-14 14:08:18,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:08:18,722 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:08:18,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:08:18,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-07-14 14:08:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2022-07-14 14:08:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 523 states have (on average 1.7246653919694073) internal successors, (902), 536 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:08:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 902 transitions. [2022-07-14 14:08:18,731 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 902 transitions. Word has length 327 [2022-07-14 14:08:18,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:08:18,731 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 902 transitions. [2022-07-14 14:08:18,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:08:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 902 transitions. [2022-07-14 14:08:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-07-14 14:08:18,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:08:18,734 INFO L195 NwaCegarLoop]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:08:18,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-14 14:08:18,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-14 14:08:18,947 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:08:18,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:08:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1439665107, now seen corresponding path program 1 times [2022-07-14 14:08:18,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:08:18,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924719079] [2022-07-14 14:08:18,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:08:18,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:08:21,381 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:08:21,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620678632] [2022-07-14 14:08:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:08:21,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:08:21,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:08:21,382 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:08:21,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process