./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/product-lines/elevator_spec14_product28.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da76b57a1451220816a27c40b8cda655a945b2081fe69d46a431c484896fab87 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 16:55:50,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 16:55:50,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 16:55:50,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 16:55:50,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 16:55:50,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 16:55:50,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 16:55:50,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 16:55:50,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 16:55:50,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 16:55:50,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 16:55:50,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 16:55:50,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 16:55:50,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 16:55:50,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 16:55:50,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 16:55:50,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 16:55:50,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 16:55:50,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 16:55:50,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 16:55:50,630 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 16:55:50,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 16:55:50,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 16:55:50,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 16:55:50,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 16:55:50,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 16:55:50,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 16:55:50,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 16:55:50,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 16:55:50,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 16:55:50,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 16:55:50,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 16:55:50,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 16:55:50,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 16:55:50,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 16:55:50,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 16:55:50,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 16:55:50,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 16:55:50,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 16:55:50,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 16:55:50,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 16:55:50,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 16:55:50,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 16:55:50,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 16:55:50,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 16:55:50,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 16:55:50,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 16:55:50,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 16:55:50,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 16:55:50,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 16:55:50,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 16:55:50,684 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 16:55:50,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 16:55:50,685 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 16:55:50,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 16:55:50,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 16:55:50,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 16:55:50,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 16:55:50,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 16:55:50,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 16:55:50,686 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 16:55:50,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 16:55:50,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 16:55:50,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 16:55:50,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 16:55:50,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 16:55:50,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 16:55:50,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:55:50,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 16:55:50,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 16:55:50,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 16:55:50,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 16:55:50,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 16:55:50,690 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 16:55:50,690 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 16:55:50,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 16:55:50,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da76b57a1451220816a27c40b8cda655a945b2081fe69d46a431c484896fab87 [2022-07-22 16:55:50,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 16:55:50,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 16:55:50,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 16:55:50,941 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 16:55:50,942 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 16:55:50,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c [2022-07-22 16:55:51,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bcab3b6/124ce3b3035145bab2d78a900bdd57c7/FLAGf9bd248e1 [2022-07-22 16:55:51,460 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 16:55:51,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c [2022-07-22 16:55:51,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bcab3b6/124ce3b3035145bab2d78a900bdd57c7/FLAGf9bd248e1 [2022-07-22 16:55:51,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bcab3b6/124ce3b3035145bab2d78a900bdd57c7 [2022-07-22 16:55:51,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 16:55:51,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 16:55:51,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 16:55:51,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 16:55:51,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 16:55:51,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:55:51" (1/1) ... [2022-07-22 16:55:51,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb7544b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:51, skipping insertion in model container [2022-07-22 16:55:51,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:55:51" (1/1) ... [2022-07-22 16:55:51,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 16:55:51,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 16:55:52,184 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/product-lines/elevator_spec14_product28.cil.c[43703,43716] [2022-07-22 16:55:52,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:55:52,246 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 16:55:52,318 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/product-lines/elevator_spec14_product28.cil.c[43703,43716] [2022-07-22 16:55:52,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:55:52,386 INFO L208 MainTranslator]: Completed translation [2022-07-22 16:55:52,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:52 WrapperNode [2022-07-22 16:55:52,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 16:55:52,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 16:55:52,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 16:55:52,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 16:55:52,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:52" (1/1) ... [2022-07-22 16:55:52,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:52" (1/1) ... [2022-07-22 16:55:52,475 INFO L137 Inliner]: procedures = 94, calls = 341, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1104 [2022-07-22 16:55:52,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 16:55:52,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 16:55:52,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 16:55:52,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 16:55:52,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:52" (1/1) ... [2022-07-22 16:55:52,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:52" (1/1) ... [2022-07-22 16:55:52,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:52" (1/1) ... [2022-07-22 16:55:52,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:52" (1/1) ... [2022-07-22 16:55:52,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:52" (1/1) ... [2022-07-22 16:55:52,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:52" (1/1) ... [2022-07-22 16:55:52,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:52" (1/1) ... [2022-07-22 16:55:52,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 16:55:52,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 16:55:52,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 16:55:52,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 16:55:52,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:52" (1/1) ... [2022-07-22 16:55:52,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:55:52,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:55:52,613 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) [2022-07-22 16:55:52,636 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 [2022-07-22 16:55:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 16:55:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-22 16:55:52,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-22 16:55:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-22 16:55:52,664 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-22 16:55:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-22 16:55:52,664 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-22 16:55:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-22 16:55:52,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-22 16:55:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-22 16:55:52,668 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-22 16:55:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-22 16:55:52,668 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-22 16:55:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-22 16:55:52,668 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-22 16:55:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 16:55:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 16:55:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 16:55:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 16:55:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-22 16:55:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-22 16:55:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-22 16:55:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-22 16:55:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-22 16:55:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-22 16:55:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-22 16:55:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-22 16:55:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-22 16:55:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-22 16:55:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-22 16:55:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-22 16:55:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-22 16:55:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-22 16:55:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-22 16:55:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-22 16:55:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-22 16:55:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-22 16:55:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-22 16:55:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-22 16:55:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-22 16:55:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-22 16:55:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 16:55:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-22 16:55:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-22 16:55:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-22 16:55:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-22 16:55:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-22 16:55:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-22 16:55:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 16:55:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 16:55:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-22 16:55:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-22 16:55:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-22 16:55:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-22 16:55:52,795 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 16:55:52,797 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 16:55:53,741 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 16:55:53,756 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 16:55:53,757 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 16:55:53,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:55:53 BoogieIcfgContainer [2022-07-22 16:55:53,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 16:55:53,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 16:55:53,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 16:55:53,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 16:55:53,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:55:51" (1/3) ... [2022-07-22 16:55:53,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8697f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:55:53, skipping insertion in model container [2022-07-22 16:55:53,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:52" (2/3) ... [2022-07-22 16:55:53,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8697f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:55:53, skipping insertion in model container [2022-07-22 16:55:53,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:55:53" (3/3) ... [2022-07-22 16:55:53,769 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product28.cil.c [2022-07-22 16:55:53,782 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 16:55:53,782 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 16:55:53,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 16:55:53,874 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@58ed3b58, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2d2c1127 [2022-07-22 16:55:53,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 16:55:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 430 states have (on average 1.672093023255814) internal successors, (719), 448 states have internal predecessors, (719), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-22 16:55:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 16:55:53,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:53,897 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:53,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:53,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:53,905 INFO L85 PathProgramCache]: Analyzing trace with hash 861521184, now seen corresponding path program 1 times [2022-07-22 16:55:53,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:53,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809857691] [2022-07-22 16:55:53,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:53,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:55:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:55:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:55:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:55:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:55:54,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:54,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809857691] [2022-07-22 16:55:54,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809857691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:54,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:54,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:55:54,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36807143] [2022-07-22 16:55:54,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:54,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:55:54,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:54,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:55:54,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:55:54,472 INFO L87 Difference]: Start difference. First operand has 554 states, 430 states have (on average 1.672093023255814) internal successors, (719), 448 states have internal predecessors, (719), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:55:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:57,291 INFO L93 Difference]: Finished difference Result 1224 states and 2043 transitions. [2022-07-22 16:55:57,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:55:57,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-07-22 16:55:57,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:57,312 INFO L225 Difference]: With dead ends: 1224 [2022-07-22 16:55:57,312 INFO L226 Difference]: Without dead ends: 670 [2022-07-22 16:55:57,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 16:55:57,332 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 646 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:57,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 2134 Invalid, 1451 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 16:55:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-07-22 16:55:57,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2022-07-22 16:55:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6619718309859155) internal successors, (708), 443 states have internal predecessors, (708), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:55:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 901 transitions. [2022-07-22 16:55:57,473 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 901 transitions. Word has length 63 [2022-07-22 16:55:57,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:57,473 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 901 transitions. [2022-07-22 16:55:57,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:55:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 901 transitions. [2022-07-22 16:55:57,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 16:55:57,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:57,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:57,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 16:55:57,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:57,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:57,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2026902989, now seen corresponding path program 1 times [2022-07-22 16:55:57,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:57,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338801861] [2022-07-22 16:55:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:57,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:55:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 16:55:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:55:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:55:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:55:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:55:57,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:57,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338801861] [2022-07-22 16:55:57,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338801861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:57,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:57,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:55:57,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873583064] [2022-07-22 16:55:57,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:57,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:55:57,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:57,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:55:57,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:55:57,649 INFO L87 Difference]: Start difference. First operand 549 states and 901 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:00,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:00,081 INFO L93 Difference]: Finished difference Result 1202 states and 1987 transitions. [2022-07-22 16:56:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:00,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-07-22 16:56:00,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:00,088 INFO L225 Difference]: With dead ends: 1202 [2022-07-22 16:56:00,088 INFO L226 Difference]: Without dead ends: 670 [2022-07-22 16:56:00,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:56:00,092 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 638 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:00,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1954 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:56:00,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-07-22 16:56:00,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2022-07-22 16:56:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.65962441314554) internal successors, (707), 443 states have internal predecessors, (707), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:00,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 900 transitions. [2022-07-22 16:56:00,144 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 900 transitions. Word has length 64 [2022-07-22 16:56:00,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:00,145 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 900 transitions. [2022-07-22 16:56:00,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:00,145 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 900 transitions. [2022-07-22 16:56:00,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 16:56:00,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:00,147 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:00,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 16:56:00,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:00,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:00,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1702940924, now seen corresponding path program 1 times [2022-07-22 16:56:00,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:00,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684030803] [2022-07-22 16:56:00,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:00,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:56:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:56:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:56:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:56:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 16:56:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:00,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:00,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684030803] [2022-07-22 16:56:00,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684030803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:00,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:00,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:56:00,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463181308] [2022-07-22 16:56:00,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:00,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:00,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:00,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:00,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:56:00,330 INFO L87 Difference]: Start difference. First operand 549 states and 900 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:02,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:02,431 INFO L93 Difference]: Finished difference Result 1202 states and 1986 transitions. [2022-07-22 16:56:02,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:02,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-07-22 16:56:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:02,437 INFO L225 Difference]: With dead ends: 1202 [2022-07-22 16:56:02,437 INFO L226 Difference]: Without dead ends: 670 [2022-07-22 16:56:02,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:56:02,440 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 635 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:02,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1944 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 16:56:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-07-22 16:56:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2022-07-22 16:56:02,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6572769953051643) internal successors, (706), 443 states have internal predecessors, (706), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 899 transitions. [2022-07-22 16:56:02,481 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 899 transitions. Word has length 65 [2022-07-22 16:56:02,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:02,482 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 899 transitions. [2022-07-22 16:56:02,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:02,482 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 899 transitions. [2022-07-22 16:56:02,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 16:56:02,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:02,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:02,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 16:56:02,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:02,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:02,485 INFO L85 PathProgramCache]: Analyzing trace with hash 145697999, now seen corresponding path program 1 times [2022-07-22 16:56:02,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:02,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108033255] [2022-07-22 16:56:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:02,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 16:56:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 16:56:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 16:56:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:56:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:56:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:02,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:02,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108033255] [2022-07-22 16:56:02,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108033255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:02,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:02,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:56:02,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950606083] [2022-07-22 16:56:02,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:02,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:02,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:02,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:02,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:56:02,655 INFO L87 Difference]: Start difference. First operand 549 states and 899 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:04,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:04,742 INFO L93 Difference]: Finished difference Result 1202 states and 1985 transitions. [2022-07-22 16:56:04,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:04,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2022-07-22 16:56:04,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:04,751 INFO L225 Difference]: With dead ends: 1202 [2022-07-22 16:56:04,751 INFO L226 Difference]: Without dead ends: 670 [2022-07-22 16:56:04,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:56:04,755 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 632 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:04,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 2080 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 16:56:04,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-07-22 16:56:04,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2022-07-22 16:56:04,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6549295774647887) internal successors, (705), 443 states have internal predecessors, (705), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 898 transitions. [2022-07-22 16:56:04,792 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 898 transitions. Word has length 66 [2022-07-22 16:56:04,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:04,792 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 898 transitions. [2022-07-22 16:56:04,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:04,793 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 898 transitions. [2022-07-22 16:56:04,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 16:56:04,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:04,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:04,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 16:56:04,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:04,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:04,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2102479656, now seen corresponding path program 1 times [2022-07-22 16:56:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:04,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487719263] [2022-07-22 16:56:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:04,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:56:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 16:56:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:56:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 16:56:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:04,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:04,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487719263] [2022-07-22 16:56:04,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487719263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:04,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:04,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:56:04,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327466849] [2022-07-22 16:56:04,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:04,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:04,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:04,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:04,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:56:04,924 INFO L87 Difference]: Start difference. First operand 549 states and 898 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:06,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:06,964 INFO L93 Difference]: Finished difference Result 1202 states and 1984 transitions. [2022-07-22 16:56:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:06,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-07-22 16:56:06,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:06,969 INFO L225 Difference]: With dead ends: 1202 [2022-07-22 16:56:06,970 INFO L226 Difference]: Without dead ends: 670 [2022-07-22 16:56:06,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:56:06,973 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 629 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:06,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 2080 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 16:56:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-07-22 16:56:07,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2022-07-22 16:56:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6525821596244132) internal successors, (704), 443 states have internal predecessors, (704), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:07,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 897 transitions. [2022-07-22 16:56:07,014 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 897 transitions. Word has length 67 [2022-07-22 16:56:07,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:07,015 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 897 transitions. [2022-07-22 16:56:07,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:07,015 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 897 transitions. [2022-07-22 16:56:07,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 16:56:07,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:07,016 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:07,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 16:56:07,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:07,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash 169835, now seen corresponding path program 1 times [2022-07-22 16:56:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:07,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938627300] [2022-07-22 16:56:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:07,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:56:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:56:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:56:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:56:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:07,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:07,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938627300] [2022-07-22 16:56:07,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938627300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:07,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:07,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 16:56:07,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611459100] [2022-07-22 16:56:07,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:07,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:56:07,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:07,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:56:07,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:56:07,229 INFO L87 Difference]: Start difference. First operand 549 states and 897 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:09,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:09,751 INFO L93 Difference]: Finished difference Result 1227 states and 2028 transitions. [2022-07-22 16:56:09,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 16:56:09,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-07-22 16:56:09,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:09,756 INFO L225 Difference]: With dead ends: 1227 [2022-07-22 16:56:09,756 INFO L226 Difference]: Without dead ends: 699 [2022-07-22 16:56:09,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:56:09,759 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 716 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:09,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 2816 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:56:09,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-22 16:56:09,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 569. [2022-07-22 16:56:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6471910112359551) internal successors, (733), 462 states have internal predecessors, (733), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 926 transitions. [2022-07-22 16:56:09,796 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 926 transitions. Word has length 68 [2022-07-22 16:56:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:09,797 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 926 transitions. [2022-07-22 16:56:09,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 926 transitions. [2022-07-22 16:56:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 16:56:09,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:09,798 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:09,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 16:56:09,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:09,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1006007257, now seen corresponding path program 1 times [2022-07-22 16:56:09,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:09,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892585680] [2022-07-22 16:56:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 16:56:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 16:56:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:56:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:56:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:09,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:09,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892585680] [2022-07-22 16:56:09,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892585680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:09,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:09,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 16:56:09,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282298873] [2022-07-22 16:56:09,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:09,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:56:09,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:09,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:56:09,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:56:09,988 INFO L87 Difference]: Start difference. First operand 569 states and 926 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:12,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:12,364 INFO L93 Difference]: Finished difference Result 1211 states and 1979 transitions. [2022-07-22 16:56:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:56:12,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-07-22 16:56:12,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:12,369 INFO L225 Difference]: With dead ends: 1211 [2022-07-22 16:56:12,369 INFO L226 Difference]: Without dead ends: 699 [2022-07-22 16:56:12,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:12,373 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 691 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 2800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:12,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 2800 Invalid, 2800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:56:12,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-22 16:56:12,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 569. [2022-07-22 16:56:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6359550561797753) internal successors, (728), 462 states have internal predecessors, (728), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:12,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 921 transitions. [2022-07-22 16:56:12,406 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 921 transitions. Word has length 69 [2022-07-22 16:56:12,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:12,407 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 921 transitions. [2022-07-22 16:56:12,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:12,407 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 921 transitions. [2022-07-22 16:56:12,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 16:56:12,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:12,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:12,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 16:56:12,409 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:12,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:12,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2086538832, now seen corresponding path program 1 times [2022-07-22 16:56:12,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:12,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510487634] [2022-07-22 16:56:12,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:12,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 16:56:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 16:56:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:56:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:56:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:12,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:12,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510487634] [2022-07-22 16:56:12,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510487634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:12,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:12,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 16:56:12,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360187658] [2022-07-22 16:56:12,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:12,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:56:12,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:12,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:56:12,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:56:12,578 INFO L87 Difference]: Start difference. First operand 569 states and 921 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:15,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:15,099 INFO L93 Difference]: Finished difference Result 1211 states and 1974 transitions. [2022-07-22 16:56:15,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:56:15,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-07-22 16:56:15,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:15,103 INFO L225 Difference]: With dead ends: 1211 [2022-07-22 16:56:15,104 INFO L226 Difference]: Without dead ends: 699 [2022-07-22 16:56:15,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:15,106 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 690 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 2770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:15,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 2789 Invalid, 2770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 2600 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 16:56:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-22 16:56:15,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 569. [2022-07-22 16:56:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6247191011235955) internal successors, (723), 462 states have internal predecessors, (723), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:15,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 916 transitions. [2022-07-22 16:56:15,139 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 916 transitions. Word has length 70 [2022-07-22 16:56:15,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:15,139 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 916 transitions. [2022-07-22 16:56:15,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 916 transitions. [2022-07-22 16:56:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-22 16:56:15,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:15,141 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:15,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 16:56:15,141 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:15,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash 915012414, now seen corresponding path program 1 times [2022-07-22 16:56:15,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:15,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506806066] [2022-07-22 16:56:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:15,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:56:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:56:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 16:56:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:15,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:15,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506806066] [2022-07-22 16:56:15,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506806066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:15,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:15,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 16:56:15,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84083301] [2022-07-22 16:56:15,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:15,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:56:15,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:15,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:56:15,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:56:15,294 INFO L87 Difference]: Start difference. First operand 569 states and 916 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:17,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:17,566 INFO L93 Difference]: Finished difference Result 1211 states and 1969 transitions. [2022-07-22 16:56:17,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:56:17,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-07-22 16:56:17,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:17,570 INFO L225 Difference]: With dead ends: 1211 [2022-07-22 16:56:17,570 INFO L226 Difference]: Without dead ends: 699 [2022-07-22 16:56:17,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:17,573 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 689 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 2575 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:17,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 2794 Invalid, 2740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2575 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 16:56:17,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-22 16:56:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 569. [2022-07-22 16:56:17,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6134831460674157) internal successors, (718), 462 states have internal predecessors, (718), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:17,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 911 transitions. [2022-07-22 16:56:17,606 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 911 transitions. Word has length 71 [2022-07-22 16:56:17,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:17,606 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 911 transitions. [2022-07-22 16:56:17,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:17,606 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 911 transitions. [2022-07-22 16:56:17,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-22 16:56:17,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:17,608 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:17,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 16:56:17,608 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:17,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2064383585, now seen corresponding path program 1 times [2022-07-22 16:56:17,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:17,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631660091] [2022-07-22 16:56:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:17,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:56:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:56:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 16:56:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:17,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:17,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631660091] [2022-07-22 16:56:17,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631660091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:17,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:17,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:56:17,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55776594] [2022-07-22 16:56:17,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:17,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:17,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:17,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:56:17,780 INFO L87 Difference]: Start difference. First operand 569 states and 911 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:19,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:19,956 INFO L93 Difference]: Finished difference Result 1238 states and 2003 transitions. [2022-07-22 16:56:19,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:56:19,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-07-22 16:56:19,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:19,961 INFO L225 Difference]: With dead ends: 1238 [2022-07-22 16:56:19,961 INFO L226 Difference]: Without dead ends: 732 [2022-07-22 16:56:19,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:19,963 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 692 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:19,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1925 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 16:56:19,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-07-22 16:56:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 573. [2022-07-22 16:56:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 449 states have (on average 1.6080178173719377) internal successors, (722), 466 states have internal predecessors, (722), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 915 transitions. [2022-07-22 16:56:19,997 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 915 transitions. Word has length 71 [2022-07-22 16:56:19,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:19,997 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 915 transitions. [2022-07-22 16:56:19,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 915 transitions. [2022-07-22 16:56:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 16:56:19,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:19,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:19,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 16:56:19,999 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:20,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash -439947275, now seen corresponding path program 1 times [2022-07-22 16:56:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:20,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781660492] [2022-07-22 16:56:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:20,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:56:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:56:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 16:56:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:56:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:20,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:20,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781660492] [2022-07-22 16:56:20,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781660492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:20,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:20,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 16:56:20,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841670609] [2022-07-22 16:56:20,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:20,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:56:20,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:20,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:56:20,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:56:20,161 INFO L87 Difference]: Start difference. First operand 573 states and 915 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:22,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:22,514 INFO L93 Difference]: Finished difference Result 1221 states and 1973 transitions. [2022-07-22 16:56:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:56:22,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-07-22 16:56:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:22,518 INFO L225 Difference]: With dead ends: 1221 [2022-07-22 16:56:22,519 INFO L226 Difference]: Without dead ends: 705 [2022-07-22 16:56:22,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:22,521 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 688 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:22,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 2794 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:56:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-07-22 16:56:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 573. [2022-07-22 16:56:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 449 states have (on average 1.5968819599109132) internal successors, (717), 466 states have internal predecessors, (717), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:22,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 910 transitions. [2022-07-22 16:56:22,553 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 910 transitions. Word has length 72 [2022-07-22 16:56:22,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:22,554 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 910 transitions. [2022-07-22 16:56:22,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:22,554 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 910 transitions. [2022-07-22 16:56:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 16:56:22,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:22,555 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:22,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 16:56:22,555 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:22,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1955223986, now seen corresponding path program 1 times [2022-07-22 16:56:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:22,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849628341] [2022-07-22 16:56:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:22,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:56:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:56:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 16:56:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:56:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:22,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849628341] [2022-07-22 16:56:22,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849628341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:22,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:22,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:56:22,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205319111] [2022-07-22 16:56:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:22,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:22,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:22,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:56:22,679 INFO L87 Difference]: Start difference. First operand 573 states and 910 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:24,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:24,745 INFO L93 Difference]: Finished difference Result 1246 states and 2002 transitions. [2022-07-22 16:56:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:56:24,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-07-22 16:56:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:24,749 INFO L225 Difference]: With dead ends: 1246 [2022-07-22 16:56:24,749 INFO L226 Difference]: Without dead ends: 738 [2022-07-22 16:56:24,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:24,751 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 695 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:24,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1901 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 16:56:24,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-07-22 16:56:24,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 579. [2022-07-22 16:56:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 455 states have (on average 1.589010989010989) internal successors, (723), 472 states have internal predecessors, (723), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 916 transitions. [2022-07-22 16:56:24,784 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 916 transitions. Word has length 72 [2022-07-22 16:56:24,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:24,784 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 916 transitions. [2022-07-22 16:56:24,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:24,785 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 916 transitions. [2022-07-22 16:56:24,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 16:56:24,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:24,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:24,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 16:56:24,786 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:24,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:24,787 INFO L85 PathProgramCache]: Analyzing trace with hash 592207523, now seen corresponding path program 1 times [2022-07-22 16:56:24,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:24,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144406215] [2022-07-22 16:56:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:24,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:56:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:56:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:56:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:24,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:24,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144406215] [2022-07-22 16:56:24,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144406215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:24,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:24,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 16:56:24,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518922849] [2022-07-22 16:56:24,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:24,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 16:56:24,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:24,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 16:56:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:24,986 INFO L87 Difference]: Start difference. First operand 579 states and 916 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 16:56:28,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:28,162 INFO L93 Difference]: Finished difference Result 1251 states and 2005 transitions. [2022-07-22 16:56:28,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 16:56:28,162 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-07-22 16:56:28,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:28,165 INFO L225 Difference]: With dead ends: 1251 [2022-07-22 16:56:28,165 INFO L226 Difference]: Without dead ends: 743 [2022-07-22 16:56:28,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-07-22 16:56:28,167 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 717 mSDsluCounter, 3474 mSDsCounter, 0 mSdLazyCounter, 4096 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 4374 SdHoareTripleChecker+Invalid, 4241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 4096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:28,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 4374 Invalid, 4241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 4096 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 16:56:28,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-07-22 16:56:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 590. [2022-07-22 16:56:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 463 states have (on average 1.5853131749460043) internal successors, (734), 482 states have internal predecessors, (734), 98 states have call successors, (98), 27 states have call predecessors, (98), 28 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2022-07-22 16:56:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 931 transitions. [2022-07-22 16:56:28,204 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 931 transitions. Word has length 73 [2022-07-22 16:56:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:28,205 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 931 transitions. [2022-07-22 16:56:28,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 16:56:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 931 transitions. [2022-07-22 16:56:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 16:56:28,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:28,206 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:28,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 16:56:28,207 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:28,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:28,207 INFO L85 PathProgramCache]: Analyzing trace with hash -234476092, now seen corresponding path program 1 times [2022-07-22 16:56:28,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:28,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960976944] [2022-07-22 16:56:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:28,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:56:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:56:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:56:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:28,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:28,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960976944] [2022-07-22 16:56:28,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960976944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:28,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:28,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:56:28,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117545886] [2022-07-22 16:56:28,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:28,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:28,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:28,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:56:28,366 INFO L87 Difference]: Start difference. First operand 590 states and 931 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:30,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:30,369 INFO L93 Difference]: Finished difference Result 1279 states and 2043 transitions. [2022-07-22 16:56:30,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:56:30,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-07-22 16:56:30,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:30,374 INFO L225 Difference]: With dead ends: 1279 [2022-07-22 16:56:30,374 INFO L226 Difference]: Without dead ends: 765 [2022-07-22 16:56:30,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:30,375 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 691 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:30,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1907 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 16:56:30,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-07-22 16:56:30,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 598. [2022-07-22 16:56:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 471 states have (on average 1.5732484076433122) internal successors, (741), 490 states have internal predecessors, (741), 98 states have call successors, (98), 27 states have call predecessors, (98), 28 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2022-07-22 16:56:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 938 transitions. [2022-07-22 16:56:30,411 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 938 transitions. Word has length 73 [2022-07-22 16:56:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:30,412 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 938 transitions. [2022-07-22 16:56:30,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 938 transitions. [2022-07-22 16:56:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 16:56:30,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:30,413 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:30,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 16:56:30,414 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:30,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:30,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1222666148, now seen corresponding path program 1 times [2022-07-22 16:56:30,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:30,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340051435] [2022-07-22 16:56:30,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:30,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:56:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:56:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:56:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:30,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:30,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340051435] [2022-07-22 16:56:30,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340051435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:30,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:30,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:56:30,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515480052] [2022-07-22 16:56:30,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:30,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:30,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:30,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:30,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:56:30,538 INFO L87 Difference]: Start difference. First operand 598 states and 938 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:32,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:32,565 INFO L93 Difference]: Finished difference Result 1317 states and 2081 transitions. [2022-07-22 16:56:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:32,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-07-22 16:56:32,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:32,581 INFO L225 Difference]: With dead ends: 1317 [2022-07-22 16:56:32,581 INFO L226 Difference]: Without dead ends: 716 [2022-07-22 16:56:32,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 16:56:32,584 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 629 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:32,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 2009 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 16:56:32,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-07-22 16:56:32,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 579. [2022-07-22 16:56:32,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 455 states have (on average 1.578021978021978) internal successors, (718), 472 states have internal predecessors, (718), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 911 transitions. [2022-07-22 16:56:32,627 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 911 transitions. Word has length 73 [2022-07-22 16:56:32,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:32,628 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 911 transitions. [2022-07-22 16:56:32,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:32,628 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 911 transitions. [2022-07-22 16:56:32,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 16:56:32,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:32,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:32,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 16:56:32,630 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:32,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:32,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1639184969, now seen corresponding path program 1 times [2022-07-22 16:56:32,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:32,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359560623] [2022-07-22 16:56:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:32,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 16:56:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:56:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 16:56:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 16:56:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:32,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:32,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359560623] [2022-07-22 16:56:32,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359560623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:32,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:32,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:56:32,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831710225] [2022-07-22 16:56:32,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:32,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:32,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:32,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:32,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:56:32,777 INFO L87 Difference]: Start difference. First operand 579 states and 911 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:34,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:34,765 INFO L93 Difference]: Finished difference Result 1264 states and 2006 transitions. [2022-07-22 16:56:34,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:56:34,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-07-22 16:56:34,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:34,768 INFO L225 Difference]: With dead ends: 1264 [2022-07-22 16:56:34,768 INFO L226 Difference]: Without dead ends: 749 [2022-07-22 16:56:34,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:34,770 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 673 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:34,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1898 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 16:56:34,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-22 16:56:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 589. [2022-07-22 16:56:34,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 465 states have (on average 1.5655913978494624) internal successors, (728), 482 states have internal predecessors, (728), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-22 16:56:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 921 transitions. [2022-07-22 16:56:34,803 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 921 transitions. Word has length 74 [2022-07-22 16:56:34,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:34,804 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 921 transitions. [2022-07-22 16:56:34,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:56:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 921 transitions. [2022-07-22 16:56:34,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 16:56:34,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:34,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:34,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 16:56:34,806 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:34,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:34,806 INFO L85 PathProgramCache]: Analyzing trace with hash 102707193, now seen corresponding path program 1 times [2022-07-22 16:56:34,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:34,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541048657] [2022-07-22 16:56:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:34,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:34,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:34,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:34,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:56:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:34,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:34,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:56:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:34,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 16:56:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 16:56:34,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:34,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541048657] [2022-07-22 16:56:34,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541048657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:34,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:34,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 16:56:34,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526372536] [2022-07-22 16:56:34,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:34,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:56:34,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:34,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:56:34,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 16:56:34,950 INFO L87 Difference]: Start difference. First operand 589 states and 921 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 16:56:37,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:37,655 INFO L93 Difference]: Finished difference Result 1842 states and 2964 transitions. [2022-07-22 16:56:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:37,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-07-22 16:56:37,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:37,661 INFO L225 Difference]: With dead ends: 1842 [2022-07-22 16:56:37,661 INFO L226 Difference]: Without dead ends: 1329 [2022-07-22 16:56:37,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:56:37,663 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 1841 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:37,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1939 Valid, 1542 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 16:56:37,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-07-22 16:56:37,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1026. [2022-07-22 16:56:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 810 states have (on average 1.5901234567901235) internal successors, (1288), 836 states have internal predecessors, (1288), 170 states have call successors, (170), 47 states have call predecessors, (170), 45 states have return successors, (175), 157 states have call predecessors, (175), 168 states have call successors, (175) [2022-07-22 16:56:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1633 transitions. [2022-07-22 16:56:37,751 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1633 transitions. Word has length 75 [2022-07-22 16:56:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:37,752 INFO L495 AbstractCegarLoop]: Abstraction has 1026 states and 1633 transitions. [2022-07-22 16:56:37,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 16:56:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1633 transitions. [2022-07-22 16:56:37,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-22 16:56:37,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:37,756 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:37,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 16:56:37,756 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:37,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:37,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1304070991, now seen corresponding path program 1 times [2022-07-22 16:56:37,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:37,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909256334] [2022-07-22 16:56:37,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:37,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:37,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:37,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:37,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:56:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:56:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 16:56:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 16:56:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 16:56:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 16:56:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 16:56:38,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:38,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909256334] [2022-07-22 16:56:38,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909256334] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:38,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344889029] [2022-07-22 16:56:38,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:38,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:38,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:38,203 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) [2022-07-22 16:56:38,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 16:56:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:56:38,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 16:56:38,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:38,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344889029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:38,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:38,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-07-22 16:56:38,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069823435] [2022-07-22 16:56:38,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:38,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:56:38,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:38,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:56:38,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:56:38,501 INFO L87 Difference]: Start difference. First operand 1026 states and 1633 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 16:56:38,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:38,701 INFO L93 Difference]: Finished difference Result 2914 states and 4759 transitions. [2022-07-22 16:56:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:56:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2022-07-22 16:56:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:38,715 INFO L225 Difference]: With dead ends: 2914 [2022-07-22 16:56:38,715 INFO L226 Difference]: Without dead ends: 1965 [2022-07-22 16:56:38,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:56:38,721 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 867 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:38,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1788 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:56:38,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2022-07-22 16:56:38,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1953. [2022-07-22 16:56:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1538 states have (on average 1.605331599479844) internal successors, (2469), 1587 states have internal predecessors, (2469), 327 states have call successors, (327), 89 states have call predecessors, (327), 87 states have return successors, (366), 306 states have call predecessors, (366), 323 states have call successors, (366) [2022-07-22 16:56:38,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 3162 transitions. [2022-07-22 16:56:38,857 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 3162 transitions. Word has length 128 [2022-07-22 16:56:38,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:38,857 INFO L495 AbstractCegarLoop]: Abstraction has 1953 states and 3162 transitions. [2022-07-22 16:56:38,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 16:56:38,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 3162 transitions. [2022-07-22 16:56:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-22 16:56:38,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:38,861 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:38,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:39,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 16:56:39,084 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:39,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:39,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1578830605, now seen corresponding path program 1 times [2022-07-22 16:56:39,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:39,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303531005] [2022-07-22 16:56:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:56:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:56:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 16:56:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 16:56:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 16:56:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 16:56:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 16:56:39,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:39,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303531005] [2022-07-22 16:56:39,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303531005] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:39,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925480529] [2022-07-22 16:56:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:39,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:39,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:39,498 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) [2022-07-22 16:56:39,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 16:56:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:56:39,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:56:39,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:39,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925480529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:39,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:39,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2022-07-22 16:56:39,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164968119] [2022-07-22 16:56:39,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:39,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:39,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:39,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:39,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:56:39,967 INFO L87 Difference]: Start difference. First operand 1953 states and 3162 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 16:56:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:40,574 INFO L93 Difference]: Finished difference Result 3862 states and 6413 transitions. [2022-07-22 16:56:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:40,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2022-07-22 16:56:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:40,585 INFO L225 Difference]: With dead ends: 3862 [2022-07-22 16:56:40,585 INFO L226 Difference]: Without dead ends: 1985 [2022-07-22 16:56:40,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:56:40,596 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 819 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:40,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 2148 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 16:56:40,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-07-22 16:56:40,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1985. [2022-07-22 16:56:40,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1566 states have (on average 1.60727969348659) internal successors, (2517), 1615 states have internal predecessors, (2517), 327 states have call successors, (327), 93 states have call predecessors, (327), 91 states have return successors, (370), 306 states have call predecessors, (370), 323 states have call successors, (370) [2022-07-22 16:56:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 3214 transitions. [2022-07-22 16:56:40,756 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 3214 transitions. Word has length 128 [2022-07-22 16:56:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:40,757 INFO L495 AbstractCegarLoop]: Abstraction has 1985 states and 3214 transitions. [2022-07-22 16:56:40,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 16:56:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 3214 transitions. [2022-07-22 16:56:40,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 16:56:40,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:40,761 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:40,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:40,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:40,976 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1324400244, now seen corresponding path program 1 times [2022-07-22 16:56:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:40,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712630252] [2022-07-22 16:56:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:40,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:56:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:56:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 16:56:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:56:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 16:56:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 16:56:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 16:56:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 16:56:41,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:41,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712630252] [2022-07-22 16:56:41,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712630252] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:41,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036558130] [2022-07-22 16:56:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:41,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:41,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:41,317 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) [2022-07-22 16:56:41,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 16:56:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:41,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 16:56:41,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 16:56:41,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:41,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036558130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:41,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:41,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2022-07-22 16:56:41,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672155204] [2022-07-22 16:56:41,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:41,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:41,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:41,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:41,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:56:41,716 INFO L87 Difference]: Start difference. First operand 1985 states and 3214 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:56:42,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:42,237 INFO L93 Difference]: Finished difference Result 5134 states and 8314 transitions. [2022-07-22 16:56:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:56:42,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-07-22 16:56:42,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:42,255 INFO L225 Difference]: With dead ends: 5134 [2022-07-22 16:56:42,256 INFO L226 Difference]: Without dead ends: 3225 [2022-07-22 16:56:42,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:56:42,266 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 849 mSDsluCounter, 3412 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 4583 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:42,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 4583 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:56:42,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3225 states. [2022-07-22 16:56:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3225 to 3219. [2022-07-22 16:56:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 2530 states have (on average 1.5648221343873518) internal successors, (3959), 2583 states have internal predecessors, (3959), 525 states have call successors, (525), 159 states have call predecessors, (525), 163 states have return successors, (664), 508 states have call predecessors, (664), 517 states have call successors, (664) [2022-07-22 16:56:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 5148 transitions. [2022-07-22 16:56:42,531 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 5148 transitions. Word has length 130 [2022-07-22 16:56:42,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:42,532 INFO L495 AbstractCegarLoop]: Abstraction has 3219 states and 5148 transitions. [2022-07-22 16:56:42,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:56:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 5148 transitions. [2022-07-22 16:56:42,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-22 16:56:42,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:42,537 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:42,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:42,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:42,760 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash 388925211, now seen corresponding path program 1 times [2022-07-22 16:56:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:42,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552009818] [2022-07-22 16:56:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:42,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:42,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:42,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:56:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:56:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 16:56:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:56:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 16:56:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 16:56:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 16:56:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 16:56:43,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:43,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552009818] [2022-07-22 16:56:43,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552009818] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:43,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540022472] [2022-07-22 16:56:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:43,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:43,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:43,124 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) [2022-07-22 16:56:43,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 16:56:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:56:43,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 16:56:43,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:43,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540022472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:43,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:43,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2022-07-22 16:56:43,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586691431] [2022-07-22 16:56:43,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:43,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:43,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:43,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:43,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:56:43,501 INFO L87 Difference]: Start difference. First operand 3219 states and 5148 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 16:56:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:44,032 INFO L93 Difference]: Finished difference Result 6426 states and 10599 transitions. [2022-07-22 16:56:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:44,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2022-07-22 16:56:44,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:44,048 INFO L225 Difference]: With dead ends: 6426 [2022-07-22 16:56:44,048 INFO L226 Difference]: Without dead ends: 3283 [2022-07-22 16:56:44,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:56:44,064 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 800 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:44,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 2148 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:56:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2022-07-22 16:56:44,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 3283. [2022-07-22 16:56:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3283 states, 2586 states have (on average 1.5680587780355761) internal successors, (4055), 2639 states have internal predecessors, (4055), 525 states have call successors, (525), 167 states have call predecessors, (525), 171 states have return successors, (672), 508 states have call predecessors, (672), 517 states have call successors, (672) [2022-07-22 16:56:44,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3283 states to 3283 states and 5252 transitions. [2022-07-22 16:56:44,319 INFO L78 Accepts]: Start accepts. Automaton has 3283 states and 5252 transitions. Word has length 131 [2022-07-22 16:56:44,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:44,319 INFO L495 AbstractCegarLoop]: Abstraction has 3283 states and 5252 transitions. [2022-07-22 16:56:44,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 16:56:44,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3283 states and 5252 transitions. [2022-07-22 16:56:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 16:56:44,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:44,324 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:44,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:44,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:44,539 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:44,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:44,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2128821267, now seen corresponding path program 1 times [2022-07-22 16:56:44,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:44,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786784687] [2022-07-22 16:56:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:44,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:56:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 16:56:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 16:56:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:56:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 16:56:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:56:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 16:56:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-22 16:56:44,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:44,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786784687] [2022-07-22 16:56:44,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786784687] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:44,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828981942] [2022-07-22 16:56:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:44,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:44,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:44,954 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) [2022-07-22 16:56:44,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 16:56:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:45,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:56:45,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 16:56:45,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:45,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828981942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:45,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:45,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2022-07-22 16:56:45,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850351938] [2022-07-22 16:56:45,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:45,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:45,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:45,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:45,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:56:45,306 INFO L87 Difference]: Start difference. First operand 3283 states and 5252 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 16:56:45,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:45,845 INFO L93 Difference]: Finished difference Result 6554 states and 10783 transitions. [2022-07-22 16:56:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:45,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2022-07-22 16:56:45,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:45,862 INFO L225 Difference]: With dead ends: 6554 [2022-07-22 16:56:45,862 INFO L226 Difference]: Without dead ends: 3347 [2022-07-22 16:56:45,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:56:45,879 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 796 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:45,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 2148 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:56:45,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2022-07-22 16:56:46,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3347. [2022-07-22 16:56:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 2642 states have (on average 1.5711582134746405) internal successors, (4151), 2695 states have internal predecessors, (4151), 525 states have call successors, (525), 175 states have call predecessors, (525), 179 states have return successors, (680), 508 states have call predecessors, (680), 517 states have call successors, (680) [2022-07-22 16:56:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 5356 transitions. [2022-07-22 16:56:46,107 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 5356 transitions. Word has length 134 [2022-07-22 16:56:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:46,108 INFO L495 AbstractCegarLoop]: Abstraction has 3347 states and 5356 transitions. [2022-07-22 16:56:46,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 16:56:46,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 5356 transitions. [2022-07-22 16:56:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-22 16:56:46,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:46,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:46,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:46,355 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,SelfDestructingSolverStorable21 [2022-07-22 16:56:46,356 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:46,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:46,356 INFO L85 PathProgramCache]: Analyzing trace with hash 385245007, now seen corresponding path program 1 times [2022-07-22 16:56:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:46,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775290100] [2022-07-22 16:56:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:46,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:56:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 16:56:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 16:56:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:56:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 16:56:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 16:56:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 16:56:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 16:56:46,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:46,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775290100] [2022-07-22 16:56:46,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775290100] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:46,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172563396] [2022-07-22 16:56:46,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:46,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:46,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:46,715 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) [2022-07-22 16:56:46,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 16:56:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:56:46,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 16:56:47,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:47,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172563396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:47,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:47,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2022-07-22 16:56:47,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144994500] [2022-07-22 16:56:47,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:47,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:47,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:47,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:47,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:56:47,034 INFO L87 Difference]: Start difference. First operand 3347 states and 5356 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 16:56:47,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:47,551 INFO L93 Difference]: Finished difference Result 6682 states and 10967 transitions. [2022-07-22 16:56:47,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:47,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2022-07-22 16:56:47,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:47,565 INFO L225 Difference]: With dead ends: 6682 [2022-07-22 16:56:47,565 INFO L226 Difference]: Without dead ends: 3411 [2022-07-22 16:56:47,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:56:47,579 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 813 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:47,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 2148 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:56:47,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2022-07-22 16:56:47,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 3411. [2022-07-22 16:56:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3411 states, 2698 states have (on average 1.5741289844329132) internal successors, (4247), 2751 states have internal predecessors, (4247), 525 states have call successors, (525), 183 states have call predecessors, (525), 187 states have return successors, (688), 508 states have call predecessors, (688), 517 states have call successors, (688) [2022-07-22 16:56:47,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 5460 transitions. [2022-07-22 16:56:47,850 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 5460 transitions. Word has length 137 [2022-07-22 16:56:47,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:47,851 INFO L495 AbstractCegarLoop]: Abstraction has 3411 states and 5460 transitions. [2022-07-22 16:56:47,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 16:56:47,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 5460 transitions. [2022-07-22 16:56:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 16:56:47,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:47,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:47,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:48,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:48,081 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:48,082 INFO L85 PathProgramCache]: Analyzing trace with hash -323803479, now seen corresponding path program 1 times [2022-07-22 16:56:48,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:48,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771519327] [2022-07-22 16:56:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:48,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:56:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:56:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:56:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 16:56:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 16:56:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 16:56:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 16:56:48,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:48,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771519327] [2022-07-22 16:56:48,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771519327] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:48,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780905064] [2022-07-22 16:56:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:48,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:48,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:48,531 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) [2022-07-22 16:56:48,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 16:56:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:48,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 16:56:48,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 16:56:48,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:48,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780905064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:48,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:48,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 20 [2022-07-22 16:56:48,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533990279] [2022-07-22 16:56:48,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:48,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:48,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:48,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:48,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:56:48,904 INFO L87 Difference]: Start difference. First operand 3411 states and 5460 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-22 16:56:50,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:50,337 INFO L93 Difference]: Finished difference Result 6898 states and 11097 transitions. [2022-07-22 16:56:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:50,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 140 [2022-07-22 16:56:50,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:50,355 INFO L225 Difference]: With dead ends: 6898 [2022-07-22 16:56:50,356 INFO L226 Difference]: Without dead ends: 3568 [2022-07-22 16:56:50,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-07-22 16:56:50,368 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 1472 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:50,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 1732 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 16:56:50,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2022-07-22 16:56:50,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3298. [2022-07-22 16:56:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3298 states, 2512 states have (on average 1.543391719745223) internal successors, (3877), 2603 states have internal predecessors, (3877), 606 states have call successors, (606), 169 states have call predecessors, (606), 179 states have return successors, (746), 577 states have call predecessors, (746), 598 states have call successors, (746) [2022-07-22 16:56:50,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 5229 transitions. [2022-07-22 16:56:50,638 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 5229 transitions. Word has length 140 [2022-07-22 16:56:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:50,638 INFO L495 AbstractCegarLoop]: Abstraction has 3298 states and 5229 transitions. [2022-07-22 16:56:50,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-22 16:56:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 5229 transitions. [2022-07-22 16:56:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 16:56:50,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:50,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:50,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:50,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:50,860 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:50,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:50,860 INFO L85 PathProgramCache]: Analyzing trace with hash 408163947, now seen corresponding path program 1 times [2022-07-22 16:56:50,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:50,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281252710] [2022-07-22 16:56:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:50,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:50,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:56:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:56:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:56:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 16:56:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 16:56:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 16:56:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 16:56:51,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:51,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281252710] [2022-07-22 16:56:51,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281252710] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:51,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652355754] [2022-07-22 16:56:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:51,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:51,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:51,245 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) [2022-07-22 16:56:51,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 16:56:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:51,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 16:56:51,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:56:51,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:51,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652355754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:51,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:51,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 22 [2022-07-22 16:56:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670998611] [2022-07-22 16:56:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:51,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:56:51,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:56:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-07-22 16:56:51,666 INFO L87 Difference]: Start difference. First operand 3298 states and 5229 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-22 16:56:54,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:54,523 INFO L93 Difference]: Finished difference Result 7639 states and 12220 transitions. [2022-07-22 16:56:54,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 16:56:54,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 140 [2022-07-22 16:56:54,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:54,542 INFO L225 Difference]: With dead ends: 7639 [2022-07-22 16:56:54,542 INFO L226 Difference]: Without dead ends: 4419 [2022-07-22 16:56:54,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 16:56:54,554 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 2934 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 4163 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3027 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 4826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 4163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:54,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3027 Valid, 3163 Invalid, 4826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 4163 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 16:56:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2022-07-22 16:56:54,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 3824. [2022-07-22 16:56:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 2904 states have (on average 1.5457988980716253) internal successors, (4489), 3017 states have internal predecessors, (4489), 696 states have call successors, (696), 191 states have call predecessors, (696), 223 states have return successors, (891), 667 states have call predecessors, (891), 688 states have call successors, (891) [2022-07-22 16:56:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 6076 transitions. [2022-07-22 16:56:54,844 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 6076 transitions. Word has length 140 [2022-07-22 16:56:54,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:54,845 INFO L495 AbstractCegarLoop]: Abstraction has 3824 states and 6076 transitions. [2022-07-22 16:56:54,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-22 16:56:54,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 6076 transitions. [2022-07-22 16:56:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 16:56:54,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:54,855 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:54,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:55,071 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,SelfDestructingSolverStorable24 [2022-07-22 16:56:55,071 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:55,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:55,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1808790549, now seen corresponding path program 1 times [2022-07-22 16:56:55,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:55,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125970255] [2022-07-22 16:56:55,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:55,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:56:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:56:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:56:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 16:56:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 16:56:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 16:56:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-22 16:56:55,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:55,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125970255] [2022-07-22 16:56:55,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125970255] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:55,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927153492] [2022-07-22 16:56:55,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:55,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:55,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:55,431 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) [2022-07-22 16:56:55,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 16:56:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:55,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 16:56:55,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 16:56:55,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:55,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927153492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:55,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:55,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-07-22 16:56:55,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980582911] [2022-07-22 16:56:55,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:55,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:56:55,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:55,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:56:55,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:56:55,826 INFO L87 Difference]: Start difference. First operand 3824 states and 6076 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 16:56:59,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:59,347 INFO L93 Difference]: Finished difference Result 10329 states and 16779 transitions. [2022-07-22 16:56:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 16:56:59,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 142 [2022-07-22 16:56:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:59,374 INFO L225 Difference]: With dead ends: 10329 [2022-07-22 16:56:59,374 INFO L226 Difference]: Without dead ends: 6583 [2022-07-22 16:56:59,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2022-07-22 16:56:59,388 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 2732 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 5422 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2832 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 6226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 5422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:59,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2832 Valid, 3192 Invalid, 6226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 5422 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 16:56:59,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2022-07-22 16:56:59,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 5961. [2022-07-22 16:56:59,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 4512 states have (on average 1.551418439716312) internal successors, (7000), 4698 states have internal predecessors, (7000), 1084 states have call successors, (1084), 291 states have call predecessors, (1084), 364 states have return successors, (1508), 1048 states have call predecessors, (1508), 1076 states have call successors, (1508) [2022-07-22 16:56:59,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 9592 transitions. [2022-07-22 16:56:59,786 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 9592 transitions. Word has length 142 [2022-07-22 16:56:59,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:59,787 INFO L495 AbstractCegarLoop]: Abstraction has 5961 states and 9592 transitions. [2022-07-22 16:56:59,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 16:56:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 9592 transitions. [2022-07-22 16:56:59,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 16:56:59,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:59,796 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:59,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:00,008 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,SelfDestructingSolverStorable25 [2022-07-22 16:57:00,008 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:00,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:00,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2003295559, now seen corresponding path program 1 times [2022-07-22 16:57:00,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:00,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498771986] [2022-07-22 16:57:00,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:00,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:57:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:57:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:57:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:57:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 16:57:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 16:57:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 16:57:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 16:57:00,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:00,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498771986] [2022-07-22 16:57:00,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498771986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:00,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:57:00,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:57:00,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12165601] [2022-07-22 16:57:00,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:00,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:57:00,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:00,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:57:00,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:57:00,432 INFO L87 Difference]: Start difference. First operand 5961 states and 9592 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 16:57:15,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:15,043 INFO L93 Difference]: Finished difference Result 27713 states and 46514 transitions. [2022-07-22 16:57:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 16:57:15,044 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 147 [2022-07-22 16:57:15,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:15,224 INFO L225 Difference]: With dead ends: 27713 [2022-07-22 16:57:15,224 INFO L226 Difference]: Without dead ends: 21834 [2022-07-22 16:57:15,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2022-07-22 16:57:15,257 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 8088 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 5637 mSolverCounterSat, 4920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8148 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 10557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4920 IncrementalHoareTripleChecker+Valid, 5637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:15,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8148 Valid, 2751 Invalid, 10557 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4920 Valid, 5637 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2022-07-22 16:57:15,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21834 states. [2022-07-22 16:57:16,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21834 to 6005. [2022-07-22 16:57:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6005 states, 4544 states have (on average 1.5484154929577465) internal successors, (7036), 4726 states have internal predecessors, (7036), 1096 states have call successors, (1096), 291 states have call predecessors, (1096), 364 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-07-22 16:57:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 9626 transitions. [2022-07-22 16:57:16,243 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 9626 transitions. Word has length 147 [2022-07-22 16:57:16,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:16,243 INFO L495 AbstractCegarLoop]: Abstraction has 6005 states and 9626 transitions. [2022-07-22 16:57:16,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 16:57:16,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 9626 transitions. [2022-07-22 16:57:16,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 16:57:16,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:16,248 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:16,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 16:57:16,249 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:16,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:16,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1632140215, now seen corresponding path program 1 times [2022-07-22 16:57:16,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:16,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336874133] [2022-07-22 16:57:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:16,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:57:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:57:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:57:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:57:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 16:57:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 16:57:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 16:57:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-22 16:57:16,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:16,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336874133] [2022-07-22 16:57:16,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336874133] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:16,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772530301] [2022-07-22 16:57:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:16,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:16,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:16,648 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) [2022-07-22 16:57:16,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 16:57:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 16:57:16,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 16:57:17,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:17,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772530301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:17,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:17,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-07-22 16:57:17,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738054866] [2022-07-22 16:57:17,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:17,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:57:17,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:17,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:57:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:57:17,025 INFO L87 Difference]: Start difference. First operand 6005 states and 9626 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 16:57:17,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:17,786 INFO L93 Difference]: Finished difference Result 6142 states and 9910 transitions. [2022-07-22 16:57:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:57:17,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2022-07-22 16:57:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:17,820 INFO L225 Difference]: With dead ends: 6142 [2022-07-22 16:57:17,821 INFO L226 Difference]: Without dead ends: 6140 [2022-07-22 16:57:17,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:57:17,825 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 360 mSDsluCounter, 3517 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 4508 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:17,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 4508 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 16:57:17,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6140 states. [2022-07-22 16:57:18,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6140 to 6005. [2022-07-22 16:57:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6005 states, 4544 states have (on average 1.5418133802816902) internal successors, (7006), 4726 states have internal predecessors, (7006), 1096 states have call successors, (1096), 291 states have call predecessors, (1096), 364 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-07-22 16:57:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 9596 transitions. [2022-07-22 16:57:18,511 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 9596 transitions. Word has length 147 [2022-07-22 16:57:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:18,512 INFO L495 AbstractCegarLoop]: Abstraction has 6005 states and 9596 transitions. [2022-07-22 16:57:18,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 16:57:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 9596 transitions. [2022-07-22 16:57:18,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-22 16:57:18,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:18,518 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:18,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:18,742 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,SelfDestructingSolverStorable27 [2022-07-22 16:57:18,742 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:18,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:18,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1721447028, now seen corresponding path program 1 times [2022-07-22 16:57:18,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:18,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995829976] [2022-07-22 16:57:18,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:18,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:57:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 16:57:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 16:57:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:57:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:57:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 16:57:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:57:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:57:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 16:57:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-22 16:57:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 16:57:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-22 16:57:19,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:19,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995829976] [2022-07-22 16:57:19,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995829976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:19,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:57:19,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 16:57:19,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434493260] [2022-07-22 16:57:19,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:19,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 16:57:19,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:19,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 16:57:19,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:57:19,114 INFO L87 Difference]: Start difference. First operand 6005 states and 9596 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-22 16:57:32,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:32,152 INFO L93 Difference]: Finished difference Result 23718 states and 39980 transitions. [2022-07-22 16:57:32,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 16:57:32,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 170 [2022-07-22 16:57:32,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:32,250 INFO L225 Difference]: With dead ends: 23718 [2022-07-22 16:57:32,250 INFO L226 Difference]: Without dead ends: 17791 [2022-07-22 16:57:32,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2022-07-22 16:57:32,288 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 3890 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 5112 mSolverCounterSat, 1795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4066 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 6907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1795 IncrementalHoareTripleChecker+Valid, 5112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:32,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4066 Valid, 2429 Invalid, 6907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1795 Valid, 5112 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-07-22 16:57:32,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17791 states. [2022-07-22 16:57:33,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17791 to 6029. [2022-07-22 16:57:33,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6029 states, 4568 states have (on average 1.5389667250437828) internal successors, (7030), 4750 states have internal predecessors, (7030), 1096 states have call successors, (1096), 291 states have call predecessors, (1096), 364 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-07-22 16:57:33,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6029 states to 6029 states and 9620 transitions. [2022-07-22 16:57:33,423 INFO L78 Accepts]: Start accepts. Automaton has 6029 states and 9620 transitions. Word has length 170 [2022-07-22 16:57:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:33,423 INFO L495 AbstractCegarLoop]: Abstraction has 6029 states and 9620 transitions. [2022-07-22 16:57:33,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-22 16:57:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 6029 states and 9620 transitions. [2022-07-22 16:57:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-22 16:57:33,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:33,429 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:33,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 16:57:33,429 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:33,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:33,430 INFO L85 PathProgramCache]: Analyzing trace with hash 663422447, now seen corresponding path program 1 times [2022-07-22 16:57:33,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:33,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668860933] [2022-07-22 16:57:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:33,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:57:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:57:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:57:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:57:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:57:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 16:57:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 16:57:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:57:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 16:57:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 16:57:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-22 16:57:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-22 16:57:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:33,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668860933] [2022-07-22 16:57:33,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668860933] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:33,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319678883] [2022-07-22 16:57:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:33,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:33,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:33,785 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) [2022-07-22 16:57:33,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 16:57:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:34,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 16:57:34,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:34,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319678883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:34,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:34,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-22 16:57:34,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301922143] [2022-07-22 16:57:34,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:34,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:34,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:34,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:34,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:57:34,033 INFO L87 Difference]: Start difference. First operand 6029 states and 9620 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 16:57:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:35,004 INFO L93 Difference]: Finished difference Result 12214 states and 19710 transitions. [2022-07-22 16:57:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:35,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 176 [2022-07-22 16:57:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:35,048 INFO L225 Difference]: With dead ends: 12214 [2022-07-22 16:57:35,048 INFO L226 Difference]: Without dead ends: 6263 [2022-07-22 16:57:35,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:57:35,074 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 213 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:35,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2373 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:35,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2022-07-22 16:57:36,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 6263. [2022-07-22 16:57:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6263 states, 4796 states have (on average 1.5571309424520434) internal successors, (7468), 4978 states have internal predecessors, (7468), 1096 states have call successors, (1096), 297 states have call predecessors, (1096), 370 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-07-22 16:57:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6263 states to 6263 states and 10058 transitions. [2022-07-22 16:57:36,147 INFO L78 Accepts]: Start accepts. Automaton has 6263 states and 10058 transitions. Word has length 176 [2022-07-22 16:57:36,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:36,147 INFO L495 AbstractCegarLoop]: Abstraction has 6263 states and 10058 transitions. [2022-07-22 16:57:36,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 16:57:36,148 INFO L276 IsEmpty]: Start isEmpty. Operand 6263 states and 10058 transitions. [2022-07-22 16:57:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-22 16:57:36,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:36,153 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:36,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:36,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:36,378 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:36,378 INFO L85 PathProgramCache]: Analyzing trace with hash 620224811, now seen corresponding path program 1 times [2022-07-22 16:57:36,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:36,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880873480] [2022-07-22 16:57:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:36,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:57:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:57:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:57:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:57:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 16:57:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:57:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 16:57:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:57:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-22 16:57:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-22 16:57:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 16:57:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 16:57:36,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:36,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880873480] [2022-07-22 16:57:36,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880873480] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:36,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407220819] [2022-07-22 16:57:36,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:36,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:36,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:36,700 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) [2022-07-22 16:57:36,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 16:57:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:36,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:36,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-22 16:57:36,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:36,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407220819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:36,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:36,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-22 16:57:36,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610447129] [2022-07-22 16:57:36,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:36,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:36,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:36,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:36,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:57:36,950 INFO L87 Difference]: Start difference. First operand 6263 states and 10058 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 16:57:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:37,873 INFO L93 Difference]: Finished difference Result 12682 states and 20574 transitions. [2022-07-22 16:57:37,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:37,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 181 [2022-07-22 16:57:37,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:37,895 INFO L225 Difference]: With dead ends: 12682 [2022-07-22 16:57:37,895 INFO L226 Difference]: Without dead ends: 6497 [2022-07-22 16:57:37,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:57:37,915 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 211 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:37,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2373 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6497 states. [2022-07-22 16:57:38,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6497 to 6497. [2022-07-22 16:57:38,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6497 states, 5024 states have (on average 1.5736464968152866) internal successors, (7906), 5206 states have internal predecessors, (7906), 1096 states have call successors, (1096), 303 states have call predecessors, (1096), 376 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-07-22 16:57:38,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6497 states to 6497 states and 10496 transitions. [2022-07-22 16:57:38,789 INFO L78 Accepts]: Start accepts. Automaton has 6497 states and 10496 transitions. Word has length 181 [2022-07-22 16:57:38,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:38,790 INFO L495 AbstractCegarLoop]: Abstraction has 6497 states and 10496 transitions. [2022-07-22 16:57:38,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 16:57:38,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6497 states and 10496 transitions. [2022-07-22 16:57:38,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-22 16:57:38,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:38,795 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:38,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:39,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:39,003 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:39,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:39,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1373818149, now seen corresponding path program 1 times [2022-07-22 16:57:39,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:39,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438581887] [2022-07-22 16:57:39,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:39,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:57:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:57:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:57:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:57:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:57:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 16:57:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 16:57:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 16:57:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 16:57:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-22 16:57:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-22 16:57:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-22 16:57:39,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:39,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438581887] [2022-07-22 16:57:39,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438581887] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:39,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748323990] [2022-07-22 16:57:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:39,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:39,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:39,356 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) [2022-07-22 16:57:39,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 16:57:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:39,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:39,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:57:39,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:39,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748323990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:39,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:39,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-22 16:57:39,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769665749] [2022-07-22 16:57:39,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:39,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:39,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:39,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:39,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:57:39,643 INFO L87 Difference]: Start difference. First operand 6497 states and 10496 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 16:57:40,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:40,555 INFO L93 Difference]: Finished difference Result 13150 states and 21438 transitions. [2022-07-22 16:57:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:40,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 185 [2022-07-22 16:57:40,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:40,581 INFO L225 Difference]: With dead ends: 13150 [2022-07-22 16:57:40,581 INFO L226 Difference]: Without dead ends: 6731 [2022-07-22 16:57:40,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:57:40,599 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 209 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:40,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2373 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:40,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6731 states. [2022-07-22 16:57:41,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6731 to 6731. [2022-07-22 16:57:41,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6731 states, 5252 states have (on average 1.5887281035795888) internal successors, (8344), 5434 states have internal predecessors, (8344), 1096 states have call successors, (1096), 309 states have call predecessors, (1096), 382 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-07-22 16:57:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6731 states to 6731 states and 10934 transitions. [2022-07-22 16:57:41,582 INFO L78 Accepts]: Start accepts. Automaton has 6731 states and 10934 transitions. Word has length 185 [2022-07-22 16:57:41,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:41,582 INFO L495 AbstractCegarLoop]: Abstraction has 6731 states and 10934 transitions. [2022-07-22 16:57:41,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 16:57:41,583 INFO L276 IsEmpty]: Start isEmpty. Operand 6731 states and 10934 transitions. [2022-07-22 16:57:41,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-22 16:57:41,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:41,589 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:41,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:41,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-22 16:57:41,790 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:41,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1287445809, now seen corresponding path program 1 times [2022-07-22 16:57:41,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:41,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016995218] [2022-07-22 16:57:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:41,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:41,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:41,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:57:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:57:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:57:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:57:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:57:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:57:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 16:57:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 16:57:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-22 16:57:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 16:57:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 16:57:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-22 16:57:42,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:42,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016995218] [2022-07-22 16:57:42,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016995218] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:42,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044113568] [2022-07-22 16:57:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:42,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:42,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:42,164 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) [2022-07-22 16:57:42,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 16:57:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:42,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:42,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 16:57:42,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:42,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044113568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:42,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:42,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-22 16:57:42,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112760719] [2022-07-22 16:57:42,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:42,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:42,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:42,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:42,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:57:42,453 INFO L87 Difference]: Start difference. First operand 6731 states and 10934 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 16:57:43,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:43,390 INFO L93 Difference]: Finished difference Result 13618 states and 22302 transitions. [2022-07-22 16:57:43,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:43,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 188 [2022-07-22 16:57:43,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:43,416 INFO L225 Difference]: With dead ends: 13618 [2022-07-22 16:57:43,417 INFO L226 Difference]: Without dead ends: 6965 [2022-07-22 16:57:43,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:57:43,436 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 207 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:43,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2373 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:43,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6965 states. [2022-07-22 16:57:44,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6965 to 6965. [2022-07-22 16:57:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6965 states, 5480 states have (on average 1.6025547445255475) internal successors, (8782), 5662 states have internal predecessors, (8782), 1096 states have call successors, (1096), 315 states have call predecessors, (1096), 388 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-07-22 16:57:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6965 states to 6965 states and 11372 transitions. [2022-07-22 16:57:44,342 INFO L78 Accepts]: Start accepts. Automaton has 6965 states and 11372 transitions. Word has length 188 [2022-07-22 16:57:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:44,342 INFO L495 AbstractCegarLoop]: Abstraction has 6965 states and 11372 transitions. [2022-07-22 16:57:44,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 16:57:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 6965 states and 11372 transitions. [2022-07-22 16:57:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 16:57:44,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:44,347 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:44,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:44,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:44,547 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:44,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:44,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1681263421, now seen corresponding path program 1 times [2022-07-22 16:57:44,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:44,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709691171] [2022-07-22 16:57:44,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:44,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:57:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:57:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:57:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:57:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:57:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:57:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:57:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:57:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 16:57:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-22 16:57:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-22 16:57:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 16:57:44,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:44,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709691171] [2022-07-22 16:57:44,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709691171] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:44,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811613906] [2022-07-22 16:57:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:44,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:44,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:44,944 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) [2022-07-22 16:57:44,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 16:57:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-22 16:57:45,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-22 16:57:45,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:45,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811613906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:45,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:45,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2022-07-22 16:57:45,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793889743] [2022-07-22 16:57:45,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:45,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:57:45,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:45,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:57:45,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-07-22 16:57:45,384 INFO L87 Difference]: Start difference. First operand 6965 states and 11372 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-22 16:57:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:49,179 INFO L93 Difference]: Finished difference Result 21710 states and 36126 transitions. [2022-07-22 16:57:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 16:57:49,180 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) Word has length 190 [2022-07-22 16:57:49,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:49,245 INFO L225 Difference]: With dead ends: 21710 [2022-07-22 16:57:49,245 INFO L226 Difference]: Without dead ends: 11508 [2022-07-22 16:57:49,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-07-22 16:57:49,290 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 1959 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 4073 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2057 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 4591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 4073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:49,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2057 Valid, 2853 Invalid, 4591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 4073 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 16:57:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11508 states. [2022-07-22 16:57:50,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11508 to 11152. [2022-07-22 16:57:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11152 states, 8652 states have (on average 1.6040221914008321) internal successors, (13878), 9007 states have internal predecessors, (13878), 1829 states have call successors, (1829), 497 states have call predecessors, (1829), 670 states have return successors, (2564), 1790 states have call predecessors, (2564), 1821 states have call successors, (2564) [2022-07-22 16:57:50,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11152 states to 11152 states and 18271 transitions. [2022-07-22 16:57:50,705 INFO L78 Accepts]: Start accepts. Automaton has 11152 states and 18271 transitions. Word has length 190 [2022-07-22 16:57:50,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:50,706 INFO L495 AbstractCegarLoop]: Abstraction has 11152 states and 18271 transitions. [2022-07-22 16:57:50,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-22 16:57:50,706 INFO L276 IsEmpty]: Start isEmpty. Operand 11152 states and 18271 transitions. [2022-07-22 16:57:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 16:57:50,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:50,716 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:50,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:50,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:50,917 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:50,917 INFO L85 PathProgramCache]: Analyzing trace with hash -429588659, now seen corresponding path program 1 times [2022-07-22 16:57:50,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:50,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747648639] [2022-07-22 16:57:50,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:50,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:57:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:57:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:57:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:57:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:57:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:57:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:57:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:57:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 16:57:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-22 16:57:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-22 16:57:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-22 16:57:51,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:51,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747648639] [2022-07-22 16:57:51,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747648639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:51,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:57:51,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 16:57:51,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052070392] [2022-07-22 16:57:51,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:51,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:57:51,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:57:51,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:57:51,205 INFO L87 Difference]: Start difference. First operand 11152 states and 18271 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 16:57:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:57,134 INFO L93 Difference]: Finished difference Result 25096 states and 41930 transitions. [2022-07-22 16:57:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 16:57:57,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 190 [2022-07-22 16:57:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:57,207 INFO L225 Difference]: With dead ends: 25096 [2022-07-22 16:57:57,207 INFO L226 Difference]: Without dead ends: 13894 [2022-07-22 16:57:57,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:57:57,245 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 1503 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:57,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 1766 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-22 16:57:57,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13894 states. [2022-07-22 16:57:58,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13894 to 11174. [2022-07-22 16:57:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11174 states, 8674 states have (on average 1.5975328568134655) internal successors, (13857), 9029 states have internal predecessors, (13857), 1829 states have call successors, (1829), 497 states have call predecessors, (1829), 670 states have return successors, (2564), 1790 states have call predecessors, (2564), 1821 states have call successors, (2564) [2022-07-22 16:57:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11174 states to 11174 states and 18250 transitions. [2022-07-22 16:57:58,797 INFO L78 Accepts]: Start accepts. Automaton has 11174 states and 18250 transitions. Word has length 190 [2022-07-22 16:57:58,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:58,798 INFO L495 AbstractCegarLoop]: Abstraction has 11174 states and 18250 transitions. [2022-07-22 16:57:58,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 16:57:58,798 INFO L276 IsEmpty]: Start isEmpty. Operand 11174 states and 18250 transitions. [2022-07-22 16:57:58,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-22 16:57:58,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:58,810 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:58,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-22 16:57:58,810 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:58,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:58,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2105572543, now seen corresponding path program 1 times [2022-07-22 16:57:58,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:58,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79659769] [2022-07-22 16:57:58,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:58,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:57:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:57:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:57:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:57:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:57:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:57:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:57:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:57:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:57:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-22 16:57:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 16:57:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-22 16:57:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 16:57:59,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:59,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79659769] [2022-07-22 16:57:59,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79659769] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:59,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82696476] [2022-07-22 16:57:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:59,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:59,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:59,192 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) [2022-07-22 16:57:59,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 16:57:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:57:59,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-22 16:57:59,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:59,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82696476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:59,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:59,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 19 [2022-07-22 16:57:59,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76810925] [2022-07-22 16:57:59,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:59,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:57:59,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:59,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:57:59,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:57:59,494 INFO L87 Difference]: Start difference. First operand 11174 states and 18250 transitions. Second operand has 7 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 16:58:00,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:00,923 INFO L93 Difference]: Finished difference Result 21838 states and 35793 transitions. [2022-07-22 16:58:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:58:00,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 196 [2022-07-22 16:58:00,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:00,957 INFO L225 Difference]: With dead ends: 21838 [2022-07-22 16:58:00,957 INFO L226 Difference]: Without dead ends: 10379 [2022-07-22 16:58:00,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:58:00,982 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 50 mSDsluCounter, 4196 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 5051 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:00,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 5051 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:58:00,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10379 states. [2022-07-22 16:58:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10379 to 10379. [2022-07-22 16:58:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10379 states, 8114 states have (on average 1.6205324131131378) internal successors, (13149), 8444 states have internal predecessors, (13149), 1644 states have call successors, (1644), 473 states have call predecessors, (1644), 620 states have return successors, (2209), 1584 states have call predecessors, (2209), 1636 states have call successors, (2209) [2022-07-22 16:58:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 17002 transitions. [2022-07-22 16:58:02,252 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 17002 transitions. Word has length 196 [2022-07-22 16:58:02,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:02,252 INFO L495 AbstractCegarLoop]: Abstraction has 10379 states and 17002 transitions. [2022-07-22 16:58:02,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 16:58:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 17002 transitions. [2022-07-22 16:58:02,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-07-22 16:58:02,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:02,263 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:58:02,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:02,463 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,SelfDestructingSolverStorable35 [2022-07-22 16:58:02,464 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:02,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1406658870, now seen corresponding path program 1 times [2022-07-22 16:58:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:02,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470825141] [2022-07-22 16:58:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:02,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:58:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:58:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:58:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:58:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:58:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:58:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:58:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:58:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:58:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:58:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 16:58:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:58:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:58:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:58:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:58:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:58:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:58:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:58:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:58:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-07-22 16:58:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:58:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 16:58:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:58:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:58:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:58:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:58:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 16:58:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:58:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:58:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 16:58:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 16:58:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 16:58:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-07-22 16:58:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:58:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-07-22 16:58:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-07-22 16:58:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-07-22 16:58:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2022-07-22 16:58:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 84 proven. 152 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2022-07-22 16:58:03,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:03,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470825141] [2022-07-22 16:58:03,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470825141] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:03,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415582323] [2022-07-22 16:58:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:03,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:03,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:03,276 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) [2022-07-22 16:58:03,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 16:58:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 4094 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 16:58:03,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-22 16:58:03,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:03,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415582323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:03,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:03,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [18] total 19 [2022-07-22 16:58:03,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247966577] [2022-07-22 16:58:03,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:03,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:58:03,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:03,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:58:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:58:03,886 INFO L87 Difference]: Start difference. First operand 10379 states and 17002 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-07-22 16:58:05,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:05,927 INFO L93 Difference]: Finished difference Result 21295 states and 35310 transitions. [2022-07-22 16:58:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:58:05,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 552 [2022-07-22 16:58:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:05,973 INFO L225 Difference]: With dead ends: 21295 [2022-07-22 16:58:05,973 INFO L226 Difference]: Without dead ends: 15837 [2022-07-22 16:58:05,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 674 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:58:05,989 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 853 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:05,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1769 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:58:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15837 states. [2022-07-22 16:58:07,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15837 to 15835. [2022-07-22 16:58:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15835 states, 12322 states have (on average 1.6195422820970622) internal successors, (19956), 12851 states have internal predecessors, (19956), 2570 states have call successors, (2570), 718 states have call predecessors, (2570), 942 states have return successors, (3624), 2511 states have call predecessors, (3624), 2558 states have call successors, (3624) [2022-07-22 16:58:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15835 states to 15835 states and 26150 transitions. [2022-07-22 16:58:08,083 INFO L78 Accepts]: Start accepts. Automaton has 15835 states and 26150 transitions. Word has length 552 [2022-07-22 16:58:08,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:08,084 INFO L495 AbstractCegarLoop]: Abstraction has 15835 states and 26150 transitions. [2022-07-22 16:58:08,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-07-22 16:58:08,084 INFO L276 IsEmpty]: Start isEmpty. Operand 15835 states and 26150 transitions. [2022-07-22 16:58:08,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2022-07-22 16:58:08,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:08,100 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:58:08,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:08,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-22 16:58:08,316 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:08,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:08,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1253831751, now seen corresponding path program 1 times [2022-07-22 16:58:08,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:08,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429235081] [2022-07-22 16:58:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:08,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:58:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:58:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:58:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:58:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:58:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:58:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:58:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:58:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:58:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:58:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 16:58:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:58:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:58:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:58:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:58:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:58:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:58:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:58:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:58:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-07-22 16:58:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:58:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 16:58:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:58:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:58:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:58:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 16:58:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 16:58:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:58:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:58:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 16:58:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 16:58:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 16:58:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-07-22 16:58:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:58:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-07-22 16:58:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-07-22 16:58:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-07-22 16:58:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-07-22 16:58:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 84 proven. 152 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2022-07-22 16:58:08,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:08,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429235081] [2022-07-22 16:58:08,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429235081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:08,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356760751] [2022-07-22 16:58:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:08,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:08,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:08,988 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) [2022-07-22 16:58:08,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 16:58:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 4095 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:58:09,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-22 16:58:09,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:09,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356760751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:09,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:09,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2022-07-22 16:58:09,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633371235] [2022-07-22 16:58:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:09,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:58:09,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:58:09,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:58:09,514 INFO L87 Difference]: Start difference. First operand 15835 states and 26150 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-22 16:58:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:11,665 INFO L93 Difference]: Finished difference Result 31733 states and 52942 transitions. [2022-07-22 16:58:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:58:11,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 553 [2022-07-22 16:58:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:11,722 INFO L225 Difference]: With dead ends: 31733 [2022-07-22 16:58:11,722 INFO L226 Difference]: Without dead ends: 15970 [2022-07-22 16:58:11,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 674 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-07-22 16:58:11,765 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 38 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:11,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2459 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:58:11,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15970 states. [2022-07-22 16:58:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15970 to 15970. [2022-07-22 16:58:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15970 states, 12442 states have (on average 1.6208005143867545) internal successors, (20166), 12971 states have internal predecessors, (20166), 2570 states have call successors, (2570), 733 states have call predecessors, (2570), 957 states have return successors, (3624), 2511 states have call predecessors, (3624), 2558 states have call successors, (3624) [2022-07-22 16:58:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15970 states to 15970 states and 26360 transitions. [2022-07-22 16:58:13,850 INFO L78 Accepts]: Start accepts. Automaton has 15970 states and 26360 transitions. Word has length 553 [2022-07-22 16:58:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:13,850 INFO L495 AbstractCegarLoop]: Abstraction has 15970 states and 26360 transitions. [2022-07-22 16:58:13,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-22 16:58:13,850 INFO L276 IsEmpty]: Start isEmpty. Operand 15970 states and 26360 transitions. [2022-07-22 16:58:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2022-07-22 16:58:13,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:13,861 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:58:13,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:14,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-22 16:58:14,063 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:14,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:14,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1347188903, now seen corresponding path program 1 times [2022-07-22 16:58:14,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:14,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542239709] [2022-07-22 16:58:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:14,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:58:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:58:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:58:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:58:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:58:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:58:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:58:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:58:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:58:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:58:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 16:58:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:58:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:58:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:58:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:58:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:58:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:58:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:58:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:58:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-07-22 16:58:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:58:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:58:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:58:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:58:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:58:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 16:58:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:58:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 16:58:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:58:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 16:58:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 16:58:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 16:58:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-07-22 16:58:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:58:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-07-22 16:58:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-07-22 16:58:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-07-22 16:58:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-07-22 16:58:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 86 proven. 151 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2022-07-22 16:58:14,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:14,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542239709] [2022-07-22 16:58:14,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542239709] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:14,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020493452] [2022-07-22 16:58:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:14,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:14,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:14,744 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) [2022-07-22 16:58:14,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 16:58:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 4096 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:58:15,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 674 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-07-22 16:58:15,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:15,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020493452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:15,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:15,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2022-07-22 16:58:15,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959512397] [2022-07-22 16:58:15,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:15,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:58:15,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:15,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:58:15,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:58:15,281 INFO L87 Difference]: Start difference. First operand 15970 states and 26360 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-22 16:58:17,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:17,639 INFO L93 Difference]: Finished difference Result 32003 states and 53302 transitions. [2022-07-22 16:58:17,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:58:17,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 554 [2022-07-22 16:58:17,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:17,711 INFO L225 Difference]: With dead ends: 32003 [2022-07-22 16:58:17,711 INFO L226 Difference]: Without dead ends: 16105 [2022-07-22 16:58:17,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 672 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-07-22 16:58:17,770 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 36 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:17,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2459 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:58:17,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16105 states. [2022-07-22 16:58:19,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16105 to 16105. [2022-07-22 16:58:19,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16105 states, 12562 states have (on average 1.6220347078490687) internal successors, (20376), 13091 states have internal predecessors, (20376), 2570 states have call successors, (2570), 748 states have call predecessors, (2570), 972 states have return successors, (3624), 2511 states have call predecessors, (3624), 2558 states have call successors, (3624) [2022-07-22 16:58:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16105 states to 16105 states and 26570 transitions. [2022-07-22 16:58:19,906 INFO L78 Accepts]: Start accepts. Automaton has 16105 states and 26570 transitions. Word has length 554 [2022-07-22 16:58:19,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:19,906 INFO L495 AbstractCegarLoop]: Abstraction has 16105 states and 26570 transitions. [2022-07-22 16:58:19,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-22 16:58:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 16105 states and 26570 transitions. [2022-07-22 16:58:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2022-07-22 16:58:19,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:19,919 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:58:19,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:20,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:20,123 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:20,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:20,124 INFO L85 PathProgramCache]: Analyzing trace with hash 505079203, now seen corresponding path program 1 times [2022-07-22 16:58:20,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:20,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495824385] [2022-07-22 16:58:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:20,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:58:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:58:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:58:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:58:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:58:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:58:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:58:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:58:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:58:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:58:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 16:58:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:58:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:58:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:58:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:58:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:58:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:58:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:58:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:58:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-07-22 16:58:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:58:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 16:58:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:58:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:58:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:58:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 16:58:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:58:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 16:58:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:58:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 16:58:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 16:58:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 16:58:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-07-22 16:58:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:58:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-07-22 16:58:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-07-22 16:58:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-07-22 16:58:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-07-22 16:58:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 88 proven. 150 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2022-07-22 16:58:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495824385] [2022-07-22 16:58:20,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495824385] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684424409] [2022-07-22 16:58:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:20,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:20,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:20,772 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) [2022-07-22 16:58:20,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 16:58:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:21,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 4096 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 16:58:21,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 759 proven. 264 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-07-22 16:58:21,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:58:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 131 proven. 36 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2022-07-22 16:58:22,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684424409] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:58:22,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 16:58:22,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6, 5] total 24 [2022-07-22 16:58:22,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325051221] [2022-07-22 16:58:22,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 16:58:22,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 16:58:22,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:22,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 16:58:22,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-07-22 16:58:22,329 INFO L87 Difference]: Start difference. First operand 16105 states and 26570 transitions. Second operand has 24 states, 24 states have (on average 19.291666666666668) internal successors, (463), 19 states have internal predecessors, (463), 11 states have call successors, (111), 11 states have call predecessors, (111), 11 states have return successors, (109), 13 states have call predecessors, (109), 11 states have call successors, (109)