./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.c --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/recursive/MultCommutative-2.c -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 ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 13:52:32,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 13:52:32,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 13:52:32,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 13:52:32,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 13:52:32,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 13:52:32,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 13:52:32,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 13:52:32,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 13:52:32,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 13:52:32,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 13:52:32,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 13:52:32,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 13:52:32,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 13:52:32,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 13:52:32,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 13:52:32,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 13:52:32,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 13:52:32,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 13:52:32,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 13:52:32,616 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 13:52:32,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 13:52:32,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 13:52:32,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 13:52:32,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 13:52:32,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 13:52:32,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 13:52:32,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 13:52:32,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 13:52:32,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 13:52:32,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 13:52:32,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 13:52:32,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 13:52:32,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 13:52:32,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 13:52:32,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 13:52:32,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 13:52:32,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 13:52:32,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 13:52:32,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 13:52:32,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 13:52:32,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 13:52:32,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-14 13:52:32,674 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 13:52:32,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 13:52:32,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 13:52:32,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 13:52:32,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 13:52:32,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 13:52:32,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 13:52:32,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 13:52:32,677 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 13:52:32,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 13:52:32,678 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 13:52:32,679 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 13:52:32,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 13:52:32,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 13:52:32,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 13:52:32,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 13:52:32,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 13:52:32,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 13:52:32,680 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 13:52:32,680 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 13:52:32,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 13:52:32,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 13:52:32,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 13:52:32,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 13:52:32,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 13:52:32,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 13:52:32,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:52:32,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 13:52:32,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 13:52:32,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 13:52:32,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 13:52:32,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 13:52:32,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 13:52:32,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2022-07-14 13:52:32,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 13:52:32,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 13:52:32,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 13:52:32,875 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 13:52:32,876 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 13:52:32,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2022-07-14 13:52:32,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec79c3432/738d8d36624949afbb9c1915c7013c42/FLAG9439beec4 [2022-07-14 13:52:33,277 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 13:52:33,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2022-07-14 13:52:33,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec79c3432/738d8d36624949afbb9c1915c7013c42/FLAG9439beec4 [2022-07-14 13:52:33,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec79c3432/738d8d36624949afbb9c1915c7013c42 [2022-07-14 13:52:33,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 13:52:33,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 13:52:33,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 13:52:33,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 13:52:33,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 13:52:33,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:52:33" (1/1) ... [2022-07-14 13:52:33,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c71b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33, skipping insertion in model container [2022-07-14 13:52:33,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:52:33" (1/1) ... [2022-07-14 13:52:33,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 13:52:33,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 13:52:33,448 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2022-07-14 13:52:33,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:52:33,455 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 13:52:33,470 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2022-07-14 13:52:33,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:52:33,483 INFO L208 MainTranslator]: Completed translation [2022-07-14 13:52:33,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33 WrapperNode [2022-07-14 13:52:33,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 13:52:33,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 13:52:33,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 13:52:33,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 13:52:33,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33" (1/1) ... [2022-07-14 13:52:33,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33" (1/1) ... [2022-07-14 13:52:33,507 INFO L137 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-07-14 13:52:33,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 13:52:33,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 13:52:33,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 13:52:33,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 13:52:33,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33" (1/1) ... [2022-07-14 13:52:33,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33" (1/1) ... [2022-07-14 13:52:33,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33" (1/1) ... [2022-07-14 13:52:33,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33" (1/1) ... [2022-07-14 13:52:33,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33" (1/1) ... [2022-07-14 13:52:33,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33" (1/1) ... [2022-07-14 13:52:33,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33" (1/1) ... [2022-07-14 13:52:33,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 13:52:33,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 13:52:33,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 13:52:33,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 13:52:33,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33" (1/1) ... [2022-07-14 13:52:33,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:52:33,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:33,560 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 13:52:33,579 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 13:52:33,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 13:52:33,589 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-07-14 13:52:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-07-14 13:52:33,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 13:52:33,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 13:52:33,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 13:52:33,629 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 13:52:33,630 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 13:52:33,737 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 13:52:33,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 13:52:33,741 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 13:52:33,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:52:33 BoogieIcfgContainer [2022-07-14 13:52:33,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 13:52:33,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 13:52:33,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 13:52:33,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 13:52:33,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 01:52:33" (1/3) ... [2022-07-14 13:52:33,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af675bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:52:33, skipping insertion in model container [2022-07-14 13:52:33,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:52:33" (2/3) ... [2022-07-14 13:52:33,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af675bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:52:33, skipping insertion in model container [2022-07-14 13:52:33,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:52:33" (3/3) ... [2022-07-14 13:52:33,747 INFO L111 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2022-07-14 13:52:33,756 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 13:52:33,756 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-14 13:52:33,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 13:52:33,794 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@52ab4bae, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6a95cd83 [2022-07-14 13:52:33,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-14 13:52:33,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 13:52:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-14 13:52:33,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:33,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:33,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:33,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:33,808 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2022-07-14 13:52:33,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:33,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951414048] [2022-07-14 13:52:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:33,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:33,953 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 13:52:33,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:33,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951414048] [2022-07-14 13:52:33,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951414048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:33,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:33,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:52:33,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363291994] [2022-07-14 13:52:33,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:33,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:52:33,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:33,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:52:33,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:52:33,979 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:34,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:34,118 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2022-07-14 13:52:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 13:52:34,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-14 13:52:34,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:34,125 INFO L225 Difference]: With dead ends: 81 [2022-07-14 13:52:34,126 INFO L226 Difference]: Without dead ends: 43 [2022-07-14 13:52:34,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:52:34,130 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 42 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:34,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 87 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-14 13:52:34,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2022-07-14 13:52:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 31 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 13:52:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-07-14 13:52:34,171 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2022-07-14 13:52:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:34,171 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-07-14 13:52:34,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-07-14 13:52:34,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 13:52:34,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:34,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:34,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 13:52:34,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1971768732, now seen corresponding path program 1 times [2022-07-14 13:52:34,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:34,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232947419] [2022-07-14 13:52:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:34,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:34,226 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 13:52:34,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:34,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232947419] [2022-07-14 13:52:34,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232947419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:34,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:34,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:52:34,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926767433] [2022-07-14 13:52:34,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:34,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:52:34,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:52:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:52:34,232 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:34,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:34,300 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-07-14 13:52:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 13:52:34,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-14 13:52:34,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:34,303 INFO L225 Difference]: With dead ends: 59 [2022-07-14 13:52:34,303 INFO L226 Difference]: Without dead ends: 57 [2022-07-14 13:52:34,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:52:34,307 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:34,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 58 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:34,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-14 13:52:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2022-07-14 13:52:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-14 13:52:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-07-14 13:52:34,316 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 9 [2022-07-14 13:52:34,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:34,317 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-07-14 13:52:34,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-07-14 13:52:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-14 13:52:34,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:34,318 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:34,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 13:52:34,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:34,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:34,319 INFO L85 PathProgramCache]: Analyzing trace with hash -323955617, now seen corresponding path program 1 times [2022-07-14 13:52:34,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:34,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876137025] [2022-07-14 13:52:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:34,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:34,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:34,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876137025] [2022-07-14 13:52:34,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876137025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:34,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:34,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:52:34,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307176388] [2022-07-14 13:52:34,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:34,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:52:34,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:34,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:52:34,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:52:34,383 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:34,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:34,467 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2022-07-14 13:52:34,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 13:52:34,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-14 13:52:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:34,471 INFO L225 Difference]: With dead ends: 77 [2022-07-14 13:52:34,472 INFO L226 Difference]: Without dead ends: 76 [2022-07-14 13:52:34,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:52:34,473 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:34,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 57 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:34,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-14 13:52:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2022-07-14 13:52:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-14 13:52:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2022-07-14 13:52:34,483 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 14 [2022-07-14 13:52:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:34,483 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2022-07-14 13:52:34,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2022-07-14 13:52:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-14 13:52:34,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:34,484 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:34,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 13:52:34,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:34,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:34,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1630133947, now seen corresponding path program 1 times [2022-07-14 13:52:34,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:34,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362945161] [2022-07-14 13:52:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:34,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:52:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:34,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:34,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362945161] [2022-07-14 13:52:34,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362945161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:34,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:34,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:52:34,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808521512] [2022-07-14 13:52:34,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:34,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:52:34,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:34,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:52:34,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:52:34,523 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:34,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:34,578 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2022-07-14 13:52:34,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 13:52:34,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-14 13:52:34,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:34,583 INFO L225 Difference]: With dead ends: 121 [2022-07-14 13:52:34,583 INFO L226 Difference]: Without dead ends: 85 [2022-07-14 13:52:34,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:52:34,593 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:34,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 77 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:34,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-14 13:52:34,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2022-07-14 13:52:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-14 13:52:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2022-07-14 13:52:34,620 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 15 [2022-07-14 13:52:34,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:34,621 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2022-07-14 13:52:34,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2022-07-14 13:52:34,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-14 13:52:34,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:34,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:34,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 13:52:34,624 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:34,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:34,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1005448143, now seen corresponding path program 1 times [2022-07-14 13:52:34,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:34,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416070042] [2022-07-14 13:52:34,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:34,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:34,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:52:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:34,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:34,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416070042] [2022-07-14 13:52:34,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416070042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:34,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:34,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:52:34,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216295975] [2022-07-14 13:52:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:34,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:52:34,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:34,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:52:34,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:52:34,660 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:34,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:34,713 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2022-07-14 13:52:34,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 13:52:34,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-14 13:52:34,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:34,714 INFO L225 Difference]: With dead ends: 102 [2022-07-14 13:52:34,715 INFO L226 Difference]: Without dead ends: 101 [2022-07-14 13:52:34,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:52:34,715 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 28 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:34,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 90 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-07-14 13:52:34,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2022-07-14 13:52:34,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:52:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2022-07-14 13:52:34,724 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 16 [2022-07-14 13:52:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:34,724 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2022-07-14 13:52:34,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:52:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2022-07-14 13:52:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-14 13:52:34,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:34,725 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:34,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 13:52:34,726 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:34,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:34,726 INFO L85 PathProgramCache]: Analyzing trace with hash -385899469, now seen corresponding path program 1 times [2022-07-14 13:52:34,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:34,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348801961] [2022-07-14 13:52:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:34,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:34,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:34,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348801961] [2022-07-14 13:52:34,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348801961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:52:34,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:52:34,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 13:52:34,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095126119] [2022-07-14 13:52:34,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:52:34,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:52:34,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:34,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:52:34,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:52:34,772 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:34,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:34,804 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2022-07-14 13:52:34,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 13:52:34,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-14 13:52:34,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:34,806 INFO L225 Difference]: With dead ends: 133 [2022-07-14 13:52:34,806 INFO L226 Difference]: Without dead ends: 59 [2022-07-14 13:52:34,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:52:34,810 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:34,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-14 13:52:34,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2022-07-14 13:52:34,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.25) internal successors, (50), 41 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-14 13:52:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2022-07-14 13:52:34,820 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 19 [2022-07-14 13:52:34,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:34,821 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2022-07-14 13:52:34,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:52:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2022-07-14 13:52:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-14 13:52:34,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:34,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:34,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 13:52:34,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:34,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:34,822 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2022-07-14 13:52:34,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:34,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706209866] [2022-07-14 13:52:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:34,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:34,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 13:52:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:34,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:34,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706209866] [2022-07-14 13:52:34,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706209866] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:34,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115467620] [2022-07-14 13:52:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:34,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:34,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:34,908 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 13:52:34,909 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 13:52:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:34,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 13:52:34,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:35,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:35,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115467620] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:35,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:35,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-14 13:52:35,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156151440] [2022-07-14 13:52:35,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:35,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 13:52:35,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 13:52:35,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:52:35,084 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 13:52:35,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:35,170 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-07-14 13:52:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 13:52:35,171 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2022-07-14 13:52:35,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:35,172 INFO L225 Difference]: With dead ends: 67 [2022-07-14 13:52:35,172 INFO L226 Difference]: Without dead ends: 66 [2022-07-14 13:52:35,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-07-14 13:52:35,173 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 42 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:35,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 94 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-07-14 13:52:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2022-07-14 13:52:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-14 13:52:35,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2022-07-14 13:52:35,189 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2022-07-14 13:52:35,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:35,189 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2022-07-14 13:52:35,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 13:52:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-07-14 13:52:35,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-14 13:52:35,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:35,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:35,210 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 13:52:35,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:35,409 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:35,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:35,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2022-07-14 13:52:35,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:35,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982320797] [2022-07-14 13:52:35,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:35,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:35,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 13:52:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:35,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:35,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982320797] [2022-07-14 13:52:35,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982320797] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:35,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232927509] [2022-07-14 13:52:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:35,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:35,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:35,467 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 13:52:35,468 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 13:52:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:35,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 13:52:35,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:35,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:52:35,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232927509] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:35,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:35,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-07-14 13:52:35,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260798884] [2022-07-14 13:52:35,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:35,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 13:52:35,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:35,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 13:52:35,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-14 13:52:35,564 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:52:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:35,623 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2022-07-14 13:52:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 13:52:35,624 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-14 13:52:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:35,624 INFO L225 Difference]: With dead ends: 65 [2022-07-14 13:52:35,624 INFO L226 Difference]: Without dead ends: 64 [2022-07-14 13:52:35,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:52:35,625 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:35,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 91 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-14 13:52:35,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-07-14 13:52:35,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-14 13:52:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2022-07-14 13:52:35,634 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 19 [2022-07-14 13:52:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:35,634 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2022-07-14 13:52:35,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:52:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2022-07-14 13:52:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-14 13:52:35,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:35,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:35,651 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 13:52:35,847 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,SelfDestructingSolverStorable7 [2022-07-14 13:52:35,848 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:35,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2022-07-14 13:52:35,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:35,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281332657] [2022-07-14 13:52:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:35,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:35,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:52:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:35,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 13:52:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:35,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:35,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281332657] [2022-07-14 13:52:35,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281332657] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:35,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248434506] [2022-07-14 13:52:35,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:35,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:35,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:35,919 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 13:52:35,920 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 13:52:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:35,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 13:52:35,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:35,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:36,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248434506] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:36,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:36,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-07-14 13:52:36,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322519786] [2022-07-14 13:52:36,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:36,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 13:52:36,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:36,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 13:52:36,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:52:36,078 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 13:52:36,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:36,233 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2022-07-14 13:52:36,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 13:52:36,233 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-07-14 13:52:36,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:36,233 INFO L225 Difference]: With dead ends: 94 [2022-07-14 13:52:36,234 INFO L226 Difference]: Without dead ends: 93 [2022-07-14 13:52:36,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-07-14 13:52:36,234 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:36,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 80 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-14 13:52:36,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2022-07-14 13:52:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 63 states have internal predecessors, (73), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-07-14 13:52:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2022-07-14 13:52:36,239 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 25 [2022-07-14 13:52:36,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:36,239 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2022-07-14 13:52:36,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 13:52:36,239 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2022-07-14 13:52:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-14 13:52:36,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:36,239 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:36,260 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 13:52:36,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:36,440 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:36,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:36,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2022-07-14 13:52:36,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:36,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306057542] [2022-07-14 13:52:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:36,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:36,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:52:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:36,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 13:52:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-14 13:52:36,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:36,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306057542] [2022-07-14 13:52:36,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306057542] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:36,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574230939] [2022-07-14 13:52:36,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:36,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:36,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:36,485 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 13:52:36,486 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 13:52:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:36,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 13:52:36,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-14 13:52:36,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-14 13:52:36,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574230939] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:36,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:36,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-07-14 13:52:36,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298676981] [2022-07-14 13:52:36,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:36,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 13:52:36,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:36,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 13:52:36,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-14 13:52:36,573 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 13:52:36,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:36,639 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2022-07-14 13:52:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 13:52:36,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-07-14 13:52:36,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:36,640 INFO L225 Difference]: With dead ends: 97 [2022-07-14 13:52:36,640 INFO L226 Difference]: Without dead ends: 64 [2022-07-14 13:52:36,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:52:36,641 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:36,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 114 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:52:36,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-14 13:52:36,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2022-07-14 13:52:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-14 13:52:36,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-07-14 13:52:36,645 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 26 [2022-07-14 13:52:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:36,646 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-07-14 13:52:36,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 13:52:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-07-14 13:52:36,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-14 13:52:36,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:36,646 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:36,685 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 13:52:36,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:36,863 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:36,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash 360381511, now seen corresponding path program 1 times [2022-07-14 13:52:36,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:36,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806972469] [2022-07-14 13:52:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:36,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:36,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 13:52:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:36,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:36,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:36,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806972469] [2022-07-14 13:52:36,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806972469] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:36,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503741551] [2022-07-14 13:52:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:36,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:36,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:36,944 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 13:52:36,945 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 13:52:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:36,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 13:52:36,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:37,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:37,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 13:52:37,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503741551] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:37,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:37,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-14 13:52:37,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196791980] [2022-07-14 13:52:37,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:37,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 13:52:37,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:37,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 13:52:37,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-07-14 13:52:37,205 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-14 13:52:37,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:37,432 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2022-07-14 13:52:37,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-14 13:52:37,432 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2022-07-14 13:52:37,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:37,433 INFO L225 Difference]: With dead ends: 87 [2022-07-14 13:52:37,433 INFO L226 Difference]: Without dead ends: 86 [2022-07-14 13:52:37,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2022-07-14 13:52:37,434 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 100 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:37,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 133 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:37,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-14 13:52:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 65. [2022-07-14 13:52:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-14 13:52:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2022-07-14 13:52:37,438 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 29 [2022-07-14 13:52:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:37,438 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2022-07-14 13:52:37,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-14 13:52:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-07-14 13:52:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-14 13:52:37,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:37,439 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:37,457 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 13:52:37,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-14 13:52:37,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:37,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:37,656 INFO L85 PathProgramCache]: Analyzing trace with hash 358409096, now seen corresponding path program 1 times [2022-07-14 13:52:37,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:37,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632029457] [2022-07-14 13:52:37,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:37,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:52:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-14 13:52:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-14 13:52:37,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:37,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632029457] [2022-07-14 13:52:37,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632029457] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:37,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655982558] [2022-07-14 13:52:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:37,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:37,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:37,740 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 13:52:37,741 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 13:52:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:37,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 13:52:37,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-14 13:52:37,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-14 13:52:38,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655982558] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:38,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:38,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2022-07-14 13:52:38,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857450671] [2022-07-14 13:52:38,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:38,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 13:52:38,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:38,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 13:52:38,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-07-14 13:52:38,003 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-14 13:52:38,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:38,320 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2022-07-14 13:52:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-14 13:52:38,321 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 36 [2022-07-14 13:52:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:38,322 INFO L225 Difference]: With dead ends: 128 [2022-07-14 13:52:38,322 INFO L226 Difference]: Without dead ends: 123 [2022-07-14 13:52:38,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2022-07-14 13:52:38,323 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 115 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:38,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 94 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-07-14 13:52:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 69. [2022-07-14 13:52:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-14 13:52:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-07-14 13:52:38,327 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 36 [2022-07-14 13:52:38,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:38,327 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-07-14 13:52:38,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-14 13:52:38,327 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-07-14 13:52:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-14 13:52:38,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:38,328 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:38,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-14 13:52:38,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:38,529 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:38,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:38,529 INFO L85 PathProgramCache]: Analyzing trace with hash -421481335, now seen corresponding path program 2 times [2022-07-14 13:52:38,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:38,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454010942] [2022-07-14 13:52:38,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:38,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:38,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 13:52:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:38,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:38,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-14 13:52:38,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:38,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454010942] [2022-07-14 13:52:38,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454010942] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:38,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885262975] [2022-07-14 13:52:38,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:52:38,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:38,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:38,715 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 13:52:38,716 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 13:52:38,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:52:38,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:52:38,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 13:52:38,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-14 13:52:38,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-14 13:52:39,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885262975] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:39,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:39,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2022-07-14 13:52:39,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690403177] [2022-07-14 13:52:39,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:39,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-14 13:52:39,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:39,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-14 13:52:39,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2022-07-14 13:52:39,628 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-14 13:52:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:40,172 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2022-07-14 13:52:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-14 13:52:40,172 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) Word has length 51 [2022-07-14 13:52:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:40,173 INFO L225 Difference]: With dead ends: 140 [2022-07-14 13:52:40,173 INFO L226 Difference]: Without dead ends: 139 [2022-07-14 13:52:40,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 87 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=510, Invalid=2570, Unknown=0, NotChecked=0, Total=3080 [2022-07-14 13:52:40,175 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 170 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:40,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 176 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 13:52:40,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-14 13:52:40,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2022-07-14 13:52:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (20), 14 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-14 13:52:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2022-07-14 13:52:40,179 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 51 [2022-07-14 13:52:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:40,179 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2022-07-14 13:52:40,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-14 13:52:40,180 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2022-07-14 13:52:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 13:52:40,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:40,180 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:40,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-14 13:52:40,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:40,381 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:40,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:40,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1225939680, now seen corresponding path program 2 times [2022-07-14 13:52:40,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:40,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163802014] [2022-07-14 13:52:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:40,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:52:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-14 13:52:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 13:52:40,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:40,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163802014] [2022-07-14 13:52:40,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163802014] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:40,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676205217] [2022-07-14 13:52:40,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:52:40,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:40,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:40,478 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 13:52:40,479 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 13:52:40,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:52:40,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:52:40,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 13:52:40,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 13:52:40,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 13:52:40,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676205217] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:40,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:40,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-14 13:52:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461663094] [2022-07-14 13:52:40,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:40,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 13:52:40,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:40,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 13:52:40,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-07-14 13:52:40,716 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-14 13:52:40,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:40,927 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2022-07-14 13:52:40,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 13:52:40,928 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 47 [2022-07-14 13:52:40,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:40,929 INFO L225 Difference]: With dead ends: 110 [2022-07-14 13:52:40,929 INFO L226 Difference]: Without dead ends: 105 [2022-07-14 13:52:40,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2022-07-14 13:52:40,930 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 71 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:40,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 173 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:52:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-14 13:52:40,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2022-07-14 13:52:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 6 states have call successors, (6), 4 states have call predecessors, (6), 13 states have return successors, (22), 16 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-14 13:52:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2022-07-14 13:52:40,933 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 47 [2022-07-14 13:52:40,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:40,934 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2022-07-14 13:52:40,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-14 13:52:40,934 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2022-07-14 13:52:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-14 13:52:40,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:40,934 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:40,952 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 13:52:41,135 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,SelfDestructingSolverStorable13 [2022-07-14 13:52:41,135 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:41,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:41,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1983155908, now seen corresponding path program 3 times [2022-07-14 13:52:41,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:41,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225393275] [2022-07-14 13:52:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:41,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:41,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:52:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:41,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:41,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-14 13:52:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:41,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:41,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:41,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 6 proven. 171 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-14 13:52:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225393275] [2022-07-14 13:52:41,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225393275] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789552885] [2022-07-14 13:52:41,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:52:41,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:41,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:41,323 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 13:52:41,323 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 13:52:41,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-14 13:52:41,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:52:41,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-14 13:52:41,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 75 proven. 96 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-14 13:52:41,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:52:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 85 proven. 96 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-14 13:52:42,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789552885] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:52:42,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:52:42,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2022-07-14 13:52:42,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105935456] [2022-07-14 13:52:42,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:52:42,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-14 13:52:42,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:52:42,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-14 13:52:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2022-07-14 13:52:42,194 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2022-07-14 13:52:43,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:52:43,421 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2022-07-14 13:52:43,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-14 13:52:43,422 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) Word has length 81 [2022-07-14 13:52:43,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:52:43,423 INFO L225 Difference]: With dead ends: 208 [2022-07-14 13:52:43,423 INFO L226 Difference]: Without dead ends: 191 [2022-07-14 13:52:43,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 153 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=988, Invalid=5174, Unknown=0, NotChecked=0, Total=6162 [2022-07-14 13:52:43,425 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 180 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:52:43,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 240 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 13:52:43,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-14 13:52:43,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 119. [2022-07-14 13:52:43,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 6 states have call successors, (6), 4 states have call predecessors, (6), 17 states have return successors, (26), 20 states have call predecessors, (26), 5 states have call successors, (26) [2022-07-14 13:52:43,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 132 transitions. [2022-07-14 13:52:43,434 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 132 transitions. Word has length 81 [2022-07-14 13:52:43,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:52:43,435 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 132 transitions. [2022-07-14 13:52:43,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2022-07-14 13:52:43,436 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 132 transitions. [2022-07-14 13:52:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-14 13:52:43,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:52:43,436 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:52:43,453 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 13:52:43,651 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,SelfDestructingSolverStorable14 [2022-07-14 13:52:43,651 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:52:43,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:52:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash 274461965, now seen corresponding path program 3 times [2022-07-14 13:52:43,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:52:43,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248582035] [2022-07-14 13:52:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:52:43,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:52:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 13:52:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:52:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:52:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-14 13:52:43,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:52:43,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248582035] [2022-07-14 13:52:43,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248582035] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:52:43,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677004300] [2022-07-14 13:52:43,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:52:43,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:52:43,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:52:43,948 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 13:52:43,967 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 13:52:44,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-14 13:52:44,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:52:44,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-14 13:52:44,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:52:44,326 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-14 13:52:44,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:53:04,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677004300] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:04,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:53:04,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2022-07-14 13:53:04,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434671454] [2022-07-14 13:53:04,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:53:04,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-14 13:53:04,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:53:04,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-14 13:53:04,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1282, Unknown=6, NotChecked=0, Total=1482 [2022-07-14 13:53:04,755 INFO L87 Difference]: Start difference. First operand 119 states and 132 transitions. Second operand has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-14 13:53:06,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:53:06,196 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2022-07-14 13:53:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-14 13:53:06,197 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) Word has length 95 [2022-07-14 13:53:06,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:53:06,199 INFO L225 Difference]: With dead ends: 166 [2022-07-14 13:53:06,199 INFO L226 Difference]: Without dead ends: 165 [2022-07-14 13:53:06,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 102 SyntacticMatches, 7 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=513, Invalid=3513, Unknown=6, NotChecked=0, Total=4032 [2022-07-14 13:53:06,200 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 191 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 13:53:06,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 378 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 13:53:06,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-14 13:53:06,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 124. [2022-07-14 13:53:06,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 6 states have call successors, (6), 4 states have call predecessors, (6), 18 states have return successors, (28), 21 states have call predecessors, (28), 5 states have call successors, (28) [2022-07-14 13:53:06,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2022-07-14 13:53:06,210 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 95 [2022-07-14 13:53:06,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:53:06,211 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2022-07-14 13:53:06,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-14 13:53:06,211 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2022-07-14 13:53:06,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-14 13:53:06,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:53:06,213 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:53:06,250 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 13:53:06,431 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,SelfDestructingSolverStorable15 [2022-07-14 13:53:06,432 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:53:06,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:53:06,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1943630407, now seen corresponding path program 4 times [2022-07-14 13:53:06,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:53:06,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105477876] [2022-07-14 13:53:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:53:06,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:53:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:06,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 13:53:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:06,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:06,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:06,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:06,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:06,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:06,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-14 13:53:07,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:53:07,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105477876] [2022-07-14 13:53:07,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105477876] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:07,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681196993] [2022-07-14 13:53:07,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:53:07,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:07,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:53:07,020 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 13:53:07,020 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 13:53:07,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:53:07,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:53:07,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-14 13:53:07,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:53:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-14 13:53:07,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:53:19,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681196993] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:19,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:53:19,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 33 [2022-07-14 13:53:19,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019305161] [2022-07-14 13:53:19,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:53:19,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-14 13:53:19,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:53:19,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-14 13:53:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1316, Unknown=4, NotChecked=0, Total=1482 [2022-07-14 13:53:19,647 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-14 13:53:21,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:53:21,581 INFO L93 Difference]: Finished difference Result 184 states and 201 transitions. [2022-07-14 13:53:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-14 13:53:21,583 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) Word has length 106 [2022-07-14 13:53:21,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:53:21,583 INFO L225 Difference]: With dead ends: 184 [2022-07-14 13:53:21,584 INFO L226 Difference]: Without dead ends: 183 [2022-07-14 13:53:21,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=466, Invalid=3952, Unknown=4, NotChecked=0, Total=4422 [2022-07-14 13:53:21,585 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 146 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:53:21,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 508 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-14 13:53:21,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-14 13:53:21,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 129. [2022-07-14 13:53:21,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 6 states have call successors, (6), 4 states have call predecessors, (6), 19 states have return successors, (30), 22 states have call predecessors, (30), 5 states have call successors, (30) [2022-07-14 13:53:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2022-07-14 13:53:21,590 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 106 [2022-07-14 13:53:21,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:53:21,590 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2022-07-14 13:53:21,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-14 13:53:21,591 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2022-07-14 13:53:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-14 13:53:21,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:53:21,594 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:53:21,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-14 13:53:21,815 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,SelfDestructingSolverStorable16 [2022-07-14 13:53:21,815 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:53:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:53:21,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1337179471, now seen corresponding path program 5 times [2022-07-14 13:53:21,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:53:21,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866187013] [2022-07-14 13:53:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:53:21,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:53:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:21,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 13:53:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:21,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:22,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:22,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:22,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:22,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:22,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 291 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-14 13:53:22,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:53:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866187013] [2022-07-14 13:53:22,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866187013] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975041843] [2022-07-14 13:53:22,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:53:22,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:22,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:53:22,485 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 13:53:22,486 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 13:53:22,613 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-07-14 13:53:22,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:53:22,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-14 13:53:22,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:53:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 291 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-14 13:53:23,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:53:25,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975041843] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:25,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:53:25,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 36 [2022-07-14 13:53:25,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382296366] [2022-07-14 13:53:25,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:53:25,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-14 13:53:25,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:53:25,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-14 13:53:25,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2022-07-14 13:53:25,787 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-14 13:53:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:53:27,939 INFO L93 Difference]: Finished difference Result 202 states and 221 transitions. [2022-07-14 13:53:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-14 13:53:27,939 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) Word has length 117 [2022-07-14 13:53:27,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:53:27,940 INFO L225 Difference]: With dead ends: 202 [2022-07-14 13:53:27,940 INFO L226 Difference]: Without dead ends: 201 [2022-07-14 13:53:27,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 118 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=402, Invalid=4568, Unknown=0, NotChecked=0, Total=4970 [2022-07-14 13:53:27,942 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 161 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:53:27,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 514 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-14 13:53:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-14 13:53:27,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 134. [2022-07-14 13:53:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 106 states have internal predecessors, (112), 6 states have call successors, (6), 4 states have call predecessors, (6), 20 states have return successors, (32), 23 states have call predecessors, (32), 5 states have call successors, (32) [2022-07-14 13:53:27,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 150 transitions. [2022-07-14 13:53:27,947 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 150 transitions. Word has length 117 [2022-07-14 13:53:27,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:53:27,948 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 150 transitions. [2022-07-14 13:53:27,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-14 13:53:27,948 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 150 transitions. [2022-07-14 13:53:27,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-14 13:53:27,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:53:27,949 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:53:27,972 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 13:53:28,155 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,SelfDestructingSolverStorable17 [2022-07-14 13:53:28,155 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:53:28,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:53:28,156 INFO L85 PathProgramCache]: Analyzing trace with hash 777113877, now seen corresponding path program 6 times [2022-07-14 13:53:28,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:53:28,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424550115] [2022-07-14 13:53:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:53:28,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:53:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-14 13:53:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-14 13:53:28,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:53:28,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424550115] [2022-07-14 13:53:28,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424550115] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:28,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415972620] [2022-07-14 13:53:28,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 13:53:28,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:28,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:53:28,861 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 13:53:28,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-14 13:53:28,997 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2022-07-14 13:53:28,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:53:28,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-14 13:53:29,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:53:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-14 13:53:29,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:53:51,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415972620] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:51,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:53:51,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 39 [2022-07-14 13:53:51,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584632110] [2022-07-14 13:53:51,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:53:51,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-14 13:53:51,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:53:51,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-14 13:53:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1780, Unknown=8, NotChecked=0, Total=1980 [2022-07-14 13:53:51,828 INFO L87 Difference]: Start difference. First operand 134 states and 150 transitions. Second operand has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-14 13:53:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:53:54,553 INFO L93 Difference]: Finished difference Result 220 states and 241 transitions. [2022-07-14 13:53:54,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-14 13:53:54,554 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2022-07-14 13:53:54,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:53:54,555 INFO L225 Difference]: With dead ends: 220 [2022-07-14 13:53:54,555 INFO L226 Difference]: Without dead ends: 219 [2022-07-14 13:53:54,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 148 SyntacticMatches, 10 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=585, Invalid=5887, Unknown=8, NotChecked=0, Total=6480 [2022-07-14 13:53:54,557 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 179 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:53:54,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 552 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-14 13:53:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-14 13:53:54,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 139. [2022-07-14 13:53:54,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 111 states have (on average 1.045045045045045) internal successors, (116), 110 states have internal predecessors, (116), 6 states have call successors, (6), 4 states have call predecessors, (6), 21 states have return successors, (34), 24 states have call predecessors, (34), 5 states have call successors, (34) [2022-07-14 13:53:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2022-07-14 13:53:54,573 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 140 [2022-07-14 13:53:54,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:53:54,573 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2022-07-14 13:53:54,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-14 13:53:54,574 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2022-07-14 13:53:54,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-14 13:53:54,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:53:54,575 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 11, 11, 11, 10, 9, 9, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:53:54,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-14 13:53:54,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:54,787 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:53:54,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:53:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1210211640, now seen corresponding path program 4 times [2022-07-14 13:53:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:53:54,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425422659] [2022-07-14 13:53:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:53:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:53:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:53:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:54,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:54,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-14 13:53:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:55,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:53:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:53:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 6 proven. 413 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-14 13:53:55,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:53:55,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425422659] [2022-07-14 13:53:55,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425422659] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:53:55,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094510982] [2022-07-14 13:53:55,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:53:55,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:53:55,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:53:55,380 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:53:55,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-14 13:53:55,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:53:55,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:53:55,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-14 13:53:55,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:53:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 6 proven. 413 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-14 13:53:56,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:54:03,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094510982] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:03,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:54:03,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 34 [2022-07-14 13:54:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967200883] [2022-07-14 13:54:03,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:54:03,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-14 13:54:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:54:03,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-14 13:54:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1599, Unknown=2, NotChecked=0, Total=1806 [2022-07-14 13:54:03,774 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-14 13:54:06,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:54:06,111 INFO L93 Difference]: Finished difference Result 242 states and 263 transitions. [2022-07-14 13:54:06,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-14 13:54:06,111 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) Word has length 125 [2022-07-14 13:54:06,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:54:06,112 INFO L225 Difference]: With dead ends: 242 [2022-07-14 13:54:06,112 INFO L226 Difference]: Without dead ends: 239 [2022-07-14 13:54:06,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 140 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=712, Invalid=4986, Unknown=2, NotChecked=0, Total=5700 [2022-07-14 13:54:06,114 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 130 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:54:06,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 492 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-14 13:54:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-14 13:54:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 202. [2022-07-14 13:54:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.0434782608695652) internal successors, (168), 160 states have internal predecessors, (168), 9 states have call successors, (9), 6 states have call predecessors, (9), 31 states have return successors, (45), 35 states have call predecessors, (45), 7 states have call successors, (45) [2022-07-14 13:54:06,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 222 transitions. [2022-07-14 13:54:06,120 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 222 transitions. Word has length 125 [2022-07-14 13:54:06,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:54:06,120 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 222 transitions. [2022-07-14 13:54:06,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-14 13:54:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 222 transitions. [2022-07-14 13:54:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-14 13:54:06,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:54:06,122 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:54:06,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-14 13:54:06,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:06,335 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:54:06,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:54:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1390512751, now seen corresponding path program 7 times [2022-07-14 13:54:06,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:54:06,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168198503] [2022-07-14 13:54:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:54:06,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:54:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 13:54:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:06,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:06,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:06,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:06,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:06,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:06,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:06,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:07,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:07,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-07-14 13:54:07,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:54:07,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168198503] [2022-07-14 13:54:07,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168198503] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:07,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563587377] [2022-07-14 13:54:07,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-14 13:54:07,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:07,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:54:07,139 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:54:07,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-14 13:54:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:07,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-14 13:54:07,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:54:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-07-14 13:54:08,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:54:12,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563587377] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:12,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:54:12,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 42 [2022-07-14 13:54:12,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912162209] [2022-07-14 13:54:12,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:54:12,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-14 13:54:12,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:54:12,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-14 13:54:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2022-07-14 13:54:12,060 INFO L87 Difference]: Start difference. First operand 202 states and 222 transitions. Second operand has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-14 13:54:14,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:54:14,992 INFO L93 Difference]: Finished difference Result 314 states and 347 transitions. [2022-07-14 13:54:14,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-14 13:54:14,992 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) Word has length 139 [2022-07-14 13:54:14,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:54:14,995 INFO L225 Difference]: With dead ends: 314 [2022-07-14 13:54:14,996 INFO L226 Difference]: Without dead ends: 313 [2022-07-14 13:54:14,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 140 SyntacticMatches, 11 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=501, Invalid=6639, Unknown=0, NotChecked=0, Total=7140 [2022-07-14 13:54:14,998 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 277 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:54:14,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 624 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-14 13:54:14,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-14 13:54:15,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 207. [2022-07-14 13:54:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 165 states have (on average 1.0424242424242425) internal successors, (172), 164 states have internal predecessors, (172), 9 states have call successors, (9), 6 states have call predecessors, (9), 32 states have return successors, (47), 36 states have call predecessors, (47), 7 states have call successors, (47) [2022-07-14 13:54:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 228 transitions. [2022-07-14 13:54:15,012 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 228 transitions. Word has length 139 [2022-07-14 13:54:15,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:54:15,013 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 228 transitions. [2022-07-14 13:54:15,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-14 13:54:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 228 transitions. [2022-07-14 13:54:15,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-14 13:54:15,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:54:15,014 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 12, 11, 10, 10, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:54:15,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-14 13:54:15,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:15,223 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:54:15,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:54:15,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2054517474, now seen corresponding path program 5 times [2022-07-14 13:54:15,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:54:15,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693525211] [2022-07-14 13:54:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:54:15,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:54:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:15,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:54:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:15,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-14 13:54:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:15,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:15,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:15,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:15,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:15,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 6 proven. 486 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-14 13:54:15,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:54:15,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693525211] [2022-07-14 13:54:15,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693525211] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:15,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748986680] [2022-07-14 13:54:15,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:54:15,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:15,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:54:15,831 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:54:15,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-14 13:54:16,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-07-14 13:54:16,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:54:16,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-14 13:54:16,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:54:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 145 proven. 341 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-07-14 13:54:16,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:54:30,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748986680] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:30,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:54:30,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 39 [2022-07-14 13:54:30,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377676757] [2022-07-14 13:54:30,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:54:30,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-14 13:54:30,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:54:30,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-14 13:54:30,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1796, Unknown=5, NotChecked=0, Total=1980 [2022-07-14 13:54:30,646 INFO L87 Difference]: Start difference. First operand 207 states and 228 transitions. Second operand has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-14 13:54:34,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:54:34,683 INFO L93 Difference]: Finished difference Result 270 states and 294 transitions. [2022-07-14 13:54:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-14 13:54:34,685 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) Word has length 136 [2022-07-14 13:54:34,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:54:34,686 INFO L225 Difference]: With dead ends: 270 [2022-07-14 13:54:34,686 INFO L226 Difference]: Without dead ends: 263 [2022-07-14 13:54:34,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 147 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2001 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=998, Invalid=9097, Unknown=5, NotChecked=0, Total=10100 [2022-07-14 13:54:34,688 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 214 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-14 13:54:34,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 646 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-14 13:54:34,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-14 13:54:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 154. [2022-07-14 13:54:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 122 states have internal predecessors, (128), 6 states have call successors, (6), 4 states have call predecessors, (6), 24 states have return successors, (38), 27 states have call predecessors, (38), 5 states have call successors, (38) [2022-07-14 13:54:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2022-07-14 13:54:34,692 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 136 [2022-07-14 13:54:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:54:34,693 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2022-07-14 13:54:34,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-14 13:54:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2022-07-14 13:54:34,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-14 13:54:34,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:54:34,694 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:54:34,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-07-14 13:54:34,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-14 13:54:34,911 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:54:34,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:54:34,912 INFO L85 PathProgramCache]: Analyzing trace with hash -333411757, now seen corresponding path program 8 times [2022-07-14 13:54:34,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:54:34,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385443061] [2022-07-14 13:54:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:54:34,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:54:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-14 13:54:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-07-14 13:54:35,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:54:35,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385443061] [2022-07-14 13:54:35,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385443061] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:35,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190080784] [2022-07-14 13:54:35,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:54:35,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:35,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:54:35,870 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:54:35,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-14 13:54:36,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:54:36,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:54:36,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-14 13:54:36,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:54:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-07-14 13:54:37,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:54:41,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190080784] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:41,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:54:41,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 45 [2022-07-14 13:54:41,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327202146] [2022-07-14 13:54:41,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:54:41,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-14 13:54:41,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:54:41,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-14 13:54:41,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2108, Unknown=0, NotChecked=0, Total=2256 [2022-07-14 13:54:41,800 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-14 13:54:45,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:54:45,395 INFO L93 Difference]: Finished difference Result 250 states and 273 transitions. [2022-07-14 13:54:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-07-14 13:54:45,395 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) Word has length 162 [2022-07-14 13:54:45,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:54:45,396 INFO L225 Difference]: With dead ends: 250 [2022-07-14 13:54:45,396 INFO L226 Difference]: Without dead ends: 249 [2022-07-14 13:54:45,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 167 SyntacticMatches, 12 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=524, Invalid=7486, Unknown=0, NotChecked=0, Total=8010 [2022-07-14 13:54:45,397 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 201 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-14 13:54:45,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 815 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-14 13:54:45,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-14 13:54:45,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 159. [2022-07-14 13:54:45,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 126 states have internal predecessors, (132), 6 states have call successors, (6), 4 states have call predecessors, (6), 25 states have return successors, (40), 28 states have call predecessors, (40), 5 states have call successors, (40) [2022-07-14 13:54:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2022-07-14 13:54:45,404 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 162 [2022-07-14 13:54:45,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:54:45,404 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2022-07-14 13:54:45,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-14 13:54:45,404 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2022-07-14 13:54:45,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-14 13:54:45,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:54:45,406 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 11, 11, 11, 11, 11, 11, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:54:45,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-14 13:54:45,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:45,623 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:54:45,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:54:45,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1275355944, now seen corresponding path program 6 times [2022-07-14 13:54:45,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:54:45,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56246365] [2022-07-14 13:54:45,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:54:45,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:54:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:45,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:54:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:45,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:45,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-14 13:54:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:45,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:45,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:45,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:45,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:46,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:46,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:46,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:46,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 2 proven. 436 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-14 13:54:46,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:54:46,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56246365] [2022-07-14 13:54:46,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56246365] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:46,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097804323] [2022-07-14 13:54:46,326 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 13:54:46,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:46,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:54:46,327 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:54:46,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-14 13:54:46,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-07-14 13:54:46,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:54:46,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-14 13:54:46,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:54:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 141 proven. 291 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-14 13:54:47,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:54:49,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097804323] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:49,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:54:49,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 42 [2022-07-14 13:54:49,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234755489] [2022-07-14 13:54:49,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:54:49,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-14 13:54:49,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:54:49,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-14 13:54:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1846, Unknown=0, NotChecked=0, Total=1980 [2022-07-14 13:54:49,884 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (10), 3 states have call predecessors, (10), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-14 13:54:54,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:54:54,532 INFO L93 Difference]: Finished difference Result 288 states and 311 transitions. [2022-07-14 13:54:54,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-07-14 13:54:54,533 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (10), 3 states have call predecessors, (10), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) Word has length 135 [2022-07-14 13:54:54,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:54:54,534 INFO L225 Difference]: With dead ends: 288 [2022-07-14 13:54:54,534 INFO L226 Difference]: Without dead ends: 283 [2022-07-14 13:54:54,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 139 SyntacticMatches, 8 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=920, Invalid=10422, Unknown=0, NotChecked=0, Total=11342 [2022-07-14 13:54:54,535 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 234 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 3407 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 3587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 3407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:54:54,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 762 Invalid, 3587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 3407 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-14 13:54:54,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-07-14 13:54:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 164. [2022-07-14 13:54:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 130 states have internal predecessors, (136), 6 states have call successors, (6), 4 states have call predecessors, (6), 26 states have return successors, (41), 29 states have call predecessors, (41), 5 states have call successors, (41) [2022-07-14 13:54:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 183 transitions. [2022-07-14 13:54:54,542 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 183 transitions. Word has length 135 [2022-07-14 13:54:54,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:54:54,542 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 183 transitions. [2022-07-14 13:54:54,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (10), 3 states have call predecessors, (10), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-14 13:54:54,542 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 183 transitions. [2022-07-14 13:54:54,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-14 13:54:54,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:54:54,543 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:54:54,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-14 13:54:54,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:54,767 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:54:54,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:54:54,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1249721811, now seen corresponding path program 9 times [2022-07-14 13:54:54,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:54:54,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563618576] [2022-07-14 13:54:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:54:54,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:54:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:54,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 13:54:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:54,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:55,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:55,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:55,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:55,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:55,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:55,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:55,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:55,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:55,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:54:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:54:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 549 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2022-07-14 13:54:55,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:54:55,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563618576] [2022-07-14 13:54:55,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563618576] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:54:55,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800899413] [2022-07-14 13:54:55,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:54:55,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:54:55,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:54:55,764 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:54:55,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-14 13:54:56,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-07-14 13:54:56,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:54:56,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-14 13:54:56,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:54:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 549 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2022-07-14 13:54:57,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:55:02,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800899413] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:55:02,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:55:02,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 48 [2022-07-14 13:55:02,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092931635] [2022-07-14 13:55:02,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:55:02,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-14 13:55:02,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:55:02,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-14 13:55:02,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2392, Unknown=0, NotChecked=0, Total=2550 [2022-07-14 13:55:02,879 INFO L87 Difference]: Start difference. First operand 164 states and 183 transitions. Second operand has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-14 13:55:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:55:06,785 INFO L93 Difference]: Finished difference Result 265 states and 289 transitions. [2022-07-14 13:55:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-07-14 13:55:06,785 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) Word has length 161 [2022-07-14 13:55:06,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:55:06,787 INFO L225 Difference]: With dead ends: 265 [2022-07-14 13:55:06,787 INFO L226 Difference]: Without dead ends: 264 [2022-07-14 13:55:06,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 162 SyntacticMatches, 13 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1688 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=561, Invalid=8559, Unknown=0, NotChecked=0, Total=9120 [2022-07-14 13:55:06,789 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 219 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:55:06,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 830 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-14 13:55:06,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-14 13:55:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 169. [2022-07-14 13:55:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 135 states have (on average 1.037037037037037) internal successors, (140), 134 states have internal predecessors, (140), 6 states have call successors, (6), 4 states have call predecessors, (6), 27 states have return successors, (43), 30 states have call predecessors, (43), 5 states have call successors, (43) [2022-07-14 13:55:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 189 transitions. [2022-07-14 13:55:06,794 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 189 transitions. Word has length 161 [2022-07-14 13:55:06,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:55:06,795 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 189 transitions. [2022-07-14 13:55:06,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-14 13:55:06,795 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 189 transitions. [2022-07-14 13:55:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-14 13:55:06,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:55:06,796 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 14, 13, 12, 12, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:55:06,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-14 13:55:07,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:55:07,016 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:55:07,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:55:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash -160848100, now seen corresponding path program 7 times [2022-07-14 13:55:07,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:55:07,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972025643] [2022-07-14 13:55:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:55:07,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:55:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:55:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-14 13:55:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 6 proven. 647 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-14 13:55:07,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:55:07,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972025643] [2022-07-14 13:55:07,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972025643] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:55:07,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015143532] [2022-07-14 13:55:07,753 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-14 13:55:07,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:55:07,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:55:07,754 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:55:07,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-14 13:55:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:08,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-14 13:55:08,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:55:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 6 proven. 647 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-14 13:55:09,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:55:12,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015143532] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:55:12,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:55:12,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 43 [2022-07-14 13:55:12,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457466520] [2022-07-14 13:55:12,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:55:12,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-14 13:55:12,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:55:12,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-14 13:55:12,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1932, Unknown=0, NotChecked=0, Total=2070 [2022-07-14 13:55:12,004 INFO L87 Difference]: Start difference. First operand 169 states and 189 transitions. Second operand has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-14 13:55:15,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:55:15,718 INFO L93 Difference]: Finished difference Result 302 states and 326 transitions. [2022-07-14 13:55:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-14 13:55:15,718 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) Word has length 158 [2022-07-14 13:55:15,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:55:15,720 INFO L225 Difference]: With dead ends: 302 [2022-07-14 13:55:15,720 INFO L226 Difference]: Without dead ends: 299 [2022-07-14 13:55:15,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 167 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1501 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=657, Invalid=7533, Unknown=0, NotChecked=0, Total=8190 [2022-07-14 13:55:15,721 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 206 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:55:15,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 837 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-14 13:55:15,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-14 13:55:15,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 247. [2022-07-14 13:55:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 197 states have (on average 1.0355329949238579) internal successors, (204), 196 states have internal predecessors, (204), 9 states have call successors, (9), 6 states have call predecessors, (9), 40 states have return successors, (57), 44 states have call predecessors, (57), 7 states have call successors, (57) [2022-07-14 13:55:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 270 transitions. [2022-07-14 13:55:15,731 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 270 transitions. Word has length 158 [2022-07-14 13:55:15,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:55:15,731 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 270 transitions. [2022-07-14 13:55:15,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-14 13:55:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 270 transitions. [2022-07-14 13:55:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-14 13:55:15,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:55:15,733 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:55:15,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-14 13:55:15,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-14 13:55:15,947 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:55:15,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:55:15,948 INFO L85 PathProgramCache]: Analyzing trace with hash -286686319, now seen corresponding path program 10 times [2022-07-14 13:55:15,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:55:15,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734601351] [2022-07-14 13:55:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:55:15,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:55:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-14 13:55:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:17,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2022-07-14 13:55:17,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:55:17,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734601351] [2022-07-14 13:55:17,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734601351] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:55:17,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416083739] [2022-07-14 13:55:17,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:55:17,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:55:17,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:55:17,048 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:55:17,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-14 13:55:17,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:55:17,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:55:17,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-14 13:55:17,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:55:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2022-07-14 13:55:19,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:55:25,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416083739] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:55:25,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:55:25,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 51 [2022-07-14 13:55:25,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275111683] [2022-07-14 13:55:25,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:55:25,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-14 13:55:25,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:55:25,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-14 13:55:25,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2694, Unknown=0, NotChecked=0, Total=2862 [2022-07-14 13:55:25,360 INFO L87 Difference]: Start difference. First operand 247 states and 270 transitions. Second operand has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-14 13:55:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:55:29,872 INFO L93 Difference]: Finished difference Result 374 states and 410 transitions. [2022-07-14 13:55:29,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-07-14 13:55:29,872 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) Word has length 184 [2022-07-14 13:55:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:55:29,873 INFO L225 Difference]: With dead ends: 374 [2022-07-14 13:55:29,873 INFO L226 Difference]: Without dead ends: 373 [2022-07-14 13:55:29,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 189 SyntacticMatches, 14 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=612, Invalid=9894, Unknown=0, NotChecked=0, Total=10506 [2022-07-14 13:55:29,875 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 331 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 4095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:55:29,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 989 Invalid, 4095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-14 13:55:29,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-07-14 13:55:29,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 252. [2022-07-14 13:55:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 201 states have (on average 1.0348258706467661) internal successors, (208), 200 states have internal predecessors, (208), 9 states have call successors, (9), 6 states have call predecessors, (9), 41 states have return successors, (59), 45 states have call predecessors, (59), 7 states have call successors, (59) [2022-07-14 13:55:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 276 transitions. [2022-07-14 13:55:29,893 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 276 transitions. Word has length 184 [2022-07-14 13:55:29,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:55:29,894 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 276 transitions. [2022-07-14 13:55:29,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-14 13:55:29,894 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 276 transitions. [2022-07-14 13:55:29,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-14 13:55:29,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:55:29,895 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 13, 13, 13, 13, 13, 13, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:55:29,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-14 13:55:30,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-14 13:55:30,110 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:55:30,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:55:30,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1765819050, now seen corresponding path program 8 times [2022-07-14 13:55:30,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:55:30,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108018337] [2022-07-14 13:55:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:55:30,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:55:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:55:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-14 13:55:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 2 proven. 583 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-07-14 13:55:30,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:55:30,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108018337] [2022-07-14 13:55:30,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108018337] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:55:30,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299188327] [2022-07-14 13:55:30,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:55:30,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:55:30,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:55:30,921 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:55:30,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-14 13:55:31,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:55:31,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:55:31,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-14 13:55:31,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:55:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 169 proven. 410 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-07-14 13:55:32,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:55:36,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299188327] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:55:36,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:55:36,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29] total 48 [2022-07-14 13:55:36,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583576241] [2022-07-14 13:55:36,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:55:36,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-14 13:55:36,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:55:36,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-14 13:55:36,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2396, Unknown=0, NotChecked=0, Total=2550 [2022-07-14 13:55:36,147 INFO L87 Difference]: Start difference. First operand 252 states and 276 transitions. Second operand has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) [2022-07-14 13:55:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:55:41,814 INFO L93 Difference]: Finished difference Result 330 states and 357 transitions. [2022-07-14 13:55:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-07-14 13:55:41,814 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) Word has length 157 [2022-07-14 13:55:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:55:41,816 INFO L225 Difference]: With dead ends: 330 [2022-07-14 13:55:41,816 INFO L226 Difference]: Without dead ends: 323 [2022-07-14 13:55:41,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 161 SyntacticMatches, 10 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1092, Invalid=14408, Unknown=0, NotChecked=0, Total=15500 [2022-07-14 13:55:41,817 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 361 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 4717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-14 13:55:41,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 974 Invalid, 4717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 4451 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-14 13:55:41,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-14 13:55:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 184. [2022-07-14 13:55:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 147 states have (on average 1.034013605442177) internal successors, (152), 146 states have internal predecessors, (152), 6 states have call successors, (6), 4 states have call predecessors, (6), 30 states have return successors, (47), 33 states have call predecessors, (47), 5 states have call successors, (47) [2022-07-14 13:55:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2022-07-14 13:55:41,822 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 157 [2022-07-14 13:55:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:55:41,822 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2022-07-14 13:55:41,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) [2022-07-14 13:55:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2022-07-14 13:55:41,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-14 13:55:41,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:55:41,823 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:55:41,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-14 13:55:42,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-14 13:55:42,042 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:55:42,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:55:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1506724331, now seen corresponding path program 11 times [2022-07-14 13:55:42,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:55:42,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512107369] [2022-07-14 13:55:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:55:42,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:55:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 13:55:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:42,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:43,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-07-14 13:55:43,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:55:43,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512107369] [2022-07-14 13:55:43,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512107369] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:55:43,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030576658] [2022-07-14 13:55:43,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:55:43,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:55:43,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:55:43,163 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:55:43,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-14 13:55:43,597 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-07-14 13:55:43,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:55:43,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-14 13:55:43,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:55:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-07-14 13:55:45,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:55:52,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030576658] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:55:52,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:55:52,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2022-07-14 13:55:52,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427004657] [2022-07-14 13:55:52,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:55:52,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-14 13:55:52,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:55:52,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-14 13:55:52,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3014, Unknown=0, NotChecked=0, Total=3192 [2022-07-14 13:55:52,196 INFO L87 Difference]: Start difference. First operand 184 states and 205 transitions. Second operand has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-14 13:55:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:55:56,940 INFO L93 Difference]: Finished difference Result 295 states and 321 transitions. [2022-07-14 13:55:56,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-07-14 13:55:56,940 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) Word has length 183 [2022-07-14 13:55:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:55:56,941 INFO L225 Difference]: With dead ends: 295 [2022-07-14 13:55:56,941 INFO L226 Difference]: Without dead ends: 294 [2022-07-14 13:55:56,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 184 SyntacticMatches, 15 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2169 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=635, Invalid=10921, Unknown=0, NotChecked=0, Total=11556 [2022-07-14 13:55:56,943 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 244 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 4215 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 4350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 4215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:55:56,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1060 Invalid, 4350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 4215 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-14 13:55:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-14 13:55:56,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 189. [2022-07-14 13:55:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 151 states have (on average 1.033112582781457) internal successors, (156), 150 states have internal predecessors, (156), 6 states have call successors, (6), 4 states have call predecessors, (6), 31 states have return successors, (49), 34 states have call predecessors, (49), 5 states have call successors, (49) [2022-07-14 13:55:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 211 transitions. [2022-07-14 13:55:56,948 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 211 transitions. Word has length 183 [2022-07-14 13:55:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:55:56,948 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 211 transitions. [2022-07-14 13:55:56,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-14 13:55:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 211 transitions. [2022-07-14 13:55:56,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-14 13:55:56,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:55:56,950 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 16, 16, 16, 16, 15, 14, 14, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:55:56,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-07-14 13:55:57,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:55:57,167 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:55:57,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:55:57,168 INFO L85 PathProgramCache]: Analyzing trace with hash -160493286, now seen corresponding path program 9 times [2022-07-14 13:55:57,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:55:57,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645254668] [2022-07-14 13:55:57,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:55:57,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:55:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:55:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-14 13:55:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:57,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:58,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:55:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:55:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 6 proven. 828 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-07-14 13:55:58,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:55:58,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645254668] [2022-07-14 13:55:58,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645254668] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:55:58,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336734724] [2022-07-14 13:55:58,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:55:58,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:55:58,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:55:58,113 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:55:58,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-14 13:55:58,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-07-14 13:55:58,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:55:58,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-14 13:55:58,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:56:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 201 proven. 627 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2022-07-14 13:56:00,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:56:04,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336734724] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:56:04,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:56:04,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 31] total 51 [2022-07-14 13:56:04,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470625270] [2022-07-14 13:56:04,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:56:04,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-14 13:56:04,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:56:04,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-14 13:56:04,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2698, Unknown=0, NotChecked=0, Total=2862 [2022-07-14 13:56:04,112 INFO L87 Difference]: Start difference. First operand 189 states and 211 transitions. Second operand has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-14 13:56:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:56:10,603 INFO L93 Difference]: Finished difference Result 348 states and 374 transitions. [2022-07-14 13:56:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-07-14 13:56:10,604 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) Word has length 180 [2022-07-14 13:56:10,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:56:10,605 INFO L225 Difference]: With dead ends: 348 [2022-07-14 13:56:10,605 INFO L226 Difference]: Without dead ends: 343 [2022-07-14 13:56:10,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 188 SyntacticMatches, 11 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1178, Invalid=16644, Unknown=0, NotChecked=0, Total=17822 [2022-07-14 13:56:10,607 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 341 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 5011 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 5267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 5011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:56:10,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1093 Invalid, 5267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 5011 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-14 13:56:10,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-14 13:56:10,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 194. [2022-07-14 13:56:10,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 155 states have (on average 1.032258064516129) internal successors, (160), 154 states have internal predecessors, (160), 6 states have call successors, (6), 4 states have call predecessors, (6), 32 states have return successors, (50), 35 states have call predecessors, (50), 5 states have call successors, (50) [2022-07-14 13:56:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2022-07-14 13:56:10,613 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 180 [2022-07-14 13:56:10,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:56:10,614 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2022-07-14 13:56:10,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-14 13:56:10,614 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2022-07-14 13:56:10,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-14 13:56:10,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:56:10,615 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:56:10,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-14 13:56:10,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:56:10,829 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:56:10,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:56:10,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1967692977, now seen corresponding path program 12 times [2022-07-14 13:56:10,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:56:10,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807590793] [2022-07-14 13:56:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:56:10,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:56:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:10,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 13:56:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:11,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-07-14 13:56:12,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:56:12,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807590793] [2022-07-14 13:56:12,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807590793] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:56:12,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263348530] [2022-07-14 13:56:12,058 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 13:56:12,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:56:12,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:56:12,059 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:56:12,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-14 13:56:12,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2022-07-14 13:56:12,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:56:12,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-14 13:56:12,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:56:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-07-14 13:56:14,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:56:22,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263348530] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:56:22,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:56:22,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 57 [2022-07-14 13:56:22,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754027270] [2022-07-14 13:56:22,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:56:22,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-07-14 13:56:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:56:22,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-07-14 13:56:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3352, Unknown=0, NotChecked=0, Total=3540 [2022-07-14 13:56:22,520 INFO L87 Difference]: Start difference. First operand 194 states and 216 transitions. Second operand has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-14 13:56:27,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:56:27,862 INFO L93 Difference]: Finished difference Result 310 states and 337 transitions. [2022-07-14 13:56:27,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-07-14 13:56:27,862 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) Word has length 194 [2022-07-14 13:56:27,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:56:27,863 INFO L225 Difference]: With dead ends: 310 [2022-07-14 13:56:27,863 INFO L226 Difference]: Without dead ends: 309 [2022-07-14 13:56:27,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 195 SyntacticMatches, 16 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2432 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=672, Invalid=12210, Unknown=0, NotChecked=0, Total=12882 [2022-07-14 13:56:27,865 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 365 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 4880 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 4880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-14 13:56:27,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1223 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 4880 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-14 13:56:27,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-14 13:56:27,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 199. [2022-07-14 13:56:27,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 159 states have (on average 1.0314465408805031) internal successors, (164), 158 states have internal predecessors, (164), 6 states have call successors, (6), 4 states have call predecessors, (6), 33 states have return successors, (52), 36 states have call predecessors, (52), 5 states have call successors, (52) [2022-07-14 13:56:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 222 transitions. [2022-07-14 13:56:27,870 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 222 transitions. Word has length 194 [2022-07-14 13:56:27,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:56:27,870 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 222 transitions. [2022-07-14 13:56:27,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-14 13:56:27,871 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 222 transitions. [2022-07-14 13:56:27,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-14 13:56:27,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:56:27,872 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 15, 15, 15, 15, 15, 15, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:56:27,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-07-14 13:56:28,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-14 13:56:28,087 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:56:28,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:56:28,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1100004820, now seen corresponding path program 10 times [2022-07-14 13:56:28,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:56:28,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532910579] [2022-07-14 13:56:28,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:56:28,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:56:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 13:56:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-14 13:56:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:28,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:29,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 2 proven. 750 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-07-14 13:56:29,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:56:29,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532910579] [2022-07-14 13:56:29,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532910579] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:56:29,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026365331] [2022-07-14 13:56:29,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:56:29,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:56:29,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:56:29,092 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:56:29,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-14 13:56:29,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:56:29,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:56:29,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-14 13:56:29,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:56:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 2 proven. 750 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-07-14 13:56:31,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:56:35,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026365331] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:56:35,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:56:35,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 52 [2022-07-14 13:56:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330033233] [2022-07-14 13:56:35,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:56:35,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-14 13:56:35,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:56:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-14 13:56:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2802, Unknown=0, NotChecked=0, Total=2970 [2022-07-14 13:56:35,923 INFO L87 Difference]: Start difference. First operand 199 states and 222 transitions. Second operand has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-14 13:56:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:56:41,296 INFO L93 Difference]: Finished difference Result 362 states and 389 transitions. [2022-07-14 13:56:41,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-07-14 13:56:41,297 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) Word has length 179 [2022-07-14 13:56:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:56:41,309 INFO L225 Difference]: With dead ends: 362 [2022-07-14 13:56:41,309 INFO L226 Difference]: Without dead ends: 359 [2022-07-14 13:56:41,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 184 SyntacticMatches, 12 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2374 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=825, Invalid=11607, Unknown=0, NotChecked=0, Total=12432 [2022-07-14 13:56:41,312 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 254 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 5030 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 5232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 5030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:56:41,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1198 Invalid, 5232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 5030 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-14 13:56:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-14 13:56:41,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 292. [2022-07-14 13:56:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 233 states have (on average 1.0300429184549356) internal successors, (240), 232 states have internal predecessors, (240), 9 states have call successors, (9), 6 states have call predecessors, (9), 49 states have return successors, (69), 53 states have call predecessors, (69), 7 states have call successors, (69) [2022-07-14 13:56:41,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 318 transitions. [2022-07-14 13:56:41,320 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 318 transitions. Word has length 179 [2022-07-14 13:56:41,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:56:41,320 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 318 transitions. [2022-07-14 13:56:41,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-14 13:56:41,320 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 318 transitions. [2022-07-14 13:56:41,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-14 13:56:41,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:56:41,322 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:56:41,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-07-14 13:56:41,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-14 13:56:41,544 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-14 13:56:41,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:56:41,544 INFO L85 PathProgramCache]: Analyzing trace with hash -48529833, now seen corresponding path program 13 times [2022-07-14 13:56:41,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:56:41,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202336540] [2022-07-14 13:56:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:56:41,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:56:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 13:56:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:41,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:41,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:41,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:41,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-14 13:56:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 887 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-07-14 13:56:42,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:56:42,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202336540] [2022-07-14 13:56:42,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202336540] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:56:42,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828377117] [2022-07-14 13:56:42,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-14 13:56:42,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:56:42,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:56:42,893 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:56:42,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-14 13:56:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:56:43,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-14 13:56:43,487 INFO L286 TraceCheckSpWp]: Computing forward predicates...