./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/seq-pthread/cs_stack-2.i -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 0a870e8a4a7dff1b238c9b19b47586f7abd44e3f0eb9969b7dad7bbd7f80e506 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:59:11,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:59:11,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:59:11,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:59:11,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:59:11,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:59:11,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:59:11,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:59:11,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:59:11,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:59:11,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:59:11,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:59:11,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:59:11,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:59:11,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:59:11,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:59:11,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:59:11,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:59:11,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:59:11,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:59:11,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:59:11,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:59:11,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:59:11,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:59:11,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:59:11,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:59:11,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:59:11,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:59:11,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:59:11,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:59:11,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:59:11,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:59:11,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:59:11,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:59:11,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:59:11,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:59:11,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:59:11,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:59:11,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:59:11,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:59:11,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:59:11,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:59:11,608 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:59:11,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:59:11,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:59:11,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:59:11,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:59:11,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:59:11,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:59:11,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:59:11,611 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:59:11,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:59:11,612 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:59:11,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:59:11,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:59:11,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:59:11,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:59:11,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:59:11,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:59:11,614 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:59:11,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:59:11,614 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:59:11,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:59:11,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:59:11,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:59:11,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:59:11,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:59:11,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:59:11,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:59:11,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:59:11,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:59:11,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:59:11,616 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:59:11,616 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:59:11,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:59:11,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:59:11,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a870e8a4a7dff1b238c9b19b47586f7abd44e3f0eb9969b7dad7bbd7f80e506 [2021-12-21 13:59:11,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:59:11,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:59:11,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:59:11,855 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:59:11,856 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:59:11,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_stack-2.i [2021-12-21 13:59:11,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3fa9724e/63f4a4320bd44094a6513fc7ed5c4159/FLAG00457fd19 [2021-12-21 13:59:12,423 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:59:12,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-2.i [2021-12-21 13:59:12,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3fa9724e/63f4a4320bd44094a6513fc7ed5c4159/FLAG00457fd19 [2021-12-21 13:59:12,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3fa9724e/63f4a4320bd44094a6513fc7ed5c4159 [2021-12-21 13:59:12,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:59:12,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:59:12,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:59:12,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:59:12,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:59:12,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:59:12" (1/1) ... [2021-12-21 13:59:12,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432a0f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:12, skipping insertion in model container [2021-12-21 13:59:12,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:59:12" (1/1) ... [2021-12-21 13:59:12,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:59:12,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:59:13,373 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/seq-pthread/cs_stack-2.i[34556,34569] [2021-12-21 13:59:13,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:59:13,520 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:59:13,555 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/seq-pthread/cs_stack-2.i[34556,34569] [2021-12-21 13:59:13,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:59:13,668 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:59:13,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:13 WrapperNode [2021-12-21 13:59:13,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:59:13,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:59:13,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:59:13,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:59:13,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:13" (1/1) ... [2021-12-21 13:59:13,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:13" (1/1) ... [2021-12-21 13:59:13,764 INFO L137 Inliner]: procedures = 252, calls = 270, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 603 [2021-12-21 13:59:13,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:59:13,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:59:13,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:59:13,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:59:13,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:13" (1/1) ... [2021-12-21 13:59:13,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:13" (1/1) ... [2021-12-21 13:59:13,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:13" (1/1) ... [2021-12-21 13:59:13,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:13" (1/1) ... [2021-12-21 13:59:13,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:13" (1/1) ... [2021-12-21 13:59:13,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:13" (1/1) ... [2021-12-21 13:59:13,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:13" (1/1) ... [2021-12-21 13:59:13,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:59:13,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:59:13,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:59:13,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:59:13,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:13" (1/1) ... [2021-12-21 13:59:13,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:59:13,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:59:13,867 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) [2021-12-21 13:59:13,891 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 [2021-12-21 13:59:13,911 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 13:59:13,911 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 13:59:13,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 13:59:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2021-12-21 13:59:13,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2021-12-21 13:59:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 13:59:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 13:59:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 13:59:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2021-12-21 13:59:13,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2021-12-21 13:59:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 13:59:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 13:59:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2021-12-21 13:59:13,914 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2021-12-21 13:59:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:59:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 13:59:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2021-12-21 13:59:13,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2021-12-21 13:59:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2021-12-21 13:59:13,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2021-12-21 13:59:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-21 13:59:13,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-21 13:59:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-21 13:59:13,919 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-21 13:59:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2021-12-21 13:59:13,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2021-12-21 13:59:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:59:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:59:13,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:59:14,147 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:59:14,148 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:59:14,193 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:14,193 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2021-12-21 13:59:14,208 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume 0 != ~__CS_ret~0 % 256; [2021-12-21 13:59:14,208 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:14,208 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:14,209 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != ~__CS_ret~0 % 256; [2021-12-21 13:59:14,209 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != ~__CS_ret~0 % 256; [2021-12-21 13:59:14,209 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:14,209 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:14,209 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256; [2021-12-21 13:59:14,209 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L930: SUMMARY for call __CS_cs(); srcloc: null [2021-12-21 13:59:14,538 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:14,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2021-12-21 13:59:14,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:14,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-12-21 13:59:14,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:14,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-12-21 13:59:14,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:14,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-12-21 13:59:14,540 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-12-21 13:59:14,540 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume !(0 != ~__CS_ret~0 % 256);pop_#res#1 := 0; [2021-12-21 13:59:14,540 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L986-4: SUMMARY for call __CS_cs(); srcloc: null [2021-12-21 13:59:14,540 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2021-12-21 13:59:14,540 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:16,907 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:59:16,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:59:16,915 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 13:59:16,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:59:16 BoogieIcfgContainer [2021-12-21 13:59:16,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:59:16,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:59:16,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:59:16,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:59:16,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:59:12" (1/3) ... [2021-12-21 13:59:16,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8c5ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:59:16, skipping insertion in model container [2021-12-21 13:59:16,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:59:13" (2/3) ... [2021-12-21 13:59:16,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8c5ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:59:16, skipping insertion in model container [2021-12-21 13:59:16,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:59:16" (3/3) ... [2021-12-21 13:59:16,923 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stack-2.i [2021-12-21 13:59:16,927 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:59:16,928 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:59:16,965 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:59:16,970 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 13:59:16,971 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:59:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 222 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 139 states have internal predecessors, (206), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-12-21 13:59:17,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-21 13:59:17,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:59:17,022 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:59:17,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:59:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:59:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1676979695, now seen corresponding path program 1 times [2021-12-21 13:59:17,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:59:17,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929256691] [2021-12-21 13:59:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:59:17,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:59:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:59:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 13:59:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 13:59:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 13:59:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:59:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:59:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 13:59:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 13:59:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 13:59:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:59:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:59:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:59:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:59:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:59:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-21 13:59:24,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:59:24,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929256691] [2021-12-21 13:59:24,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929256691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:59:24,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:59:24,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 13:59:24,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246487213] [2021-12-21 13:59:24,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:59:24,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 13:59:24,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:59:24,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 13:59:24,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 13:59:24,701 INFO L87 Difference]: Start difference. First operand has 222 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 139 states have internal predecessors, (206), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:59:24,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:59:24,768 INFO L93 Difference]: Finished difference Result 440 states and 775 transitions. [2021-12-21 13:59:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 13:59:24,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2021-12-21 13:59:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:59:24,838 INFO L225 Difference]: With dead ends: 440 [2021-12-21 13:59:24,838 INFO L226 Difference]: Without dead ends: 218 [2021-12-21 13:59:24,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 13:59:24,860 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:59:24,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:59:24,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-12-21 13:59:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-12-21 13:59:24,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 133 states have (on average 1.4887218045112782) internal successors, (198), 135 states have internal predecessors, (198), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-12-21 13:59:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 348 transitions. [2021-12-21 13:59:24,958 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 348 transitions. Word has length 94 [2021-12-21 13:59:24,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:59:24,959 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 348 transitions. [2021-12-21 13:59:24,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:59:24,959 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 348 transitions. [2021-12-21 13:59:24,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-21 13:59:24,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:59:24,969 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:59:24,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 13:59:24,970 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:59:24,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:59:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1062498259, now seen corresponding path program 1 times [2021-12-21 13:59:24,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:59:24,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113561276] [2021-12-21 13:59:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:59:24,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:59:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:59:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 13:59:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 13:59:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 13:59:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:59:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:59:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 13:59:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 13:59:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 13:59:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:59:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:59:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:59:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:59:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:59:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-21 13:59:37,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:59:37,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113561276] [2021-12-21 13:59:37,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113561276] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:59:37,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:59:37,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:59:37,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810833803] [2021-12-21 13:59:37,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:59:37,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 13:59:37,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:59:37,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 13:59:37,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 13:59:37,917 INFO L87 Difference]: Start difference. First operand 218 states and 348 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 13:59:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:59:38,005 INFO L93 Difference]: Finished difference Result 432 states and 699 transitions. [2021-12-21 13:59:38,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 13:59:38,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2021-12-21 13:59:38,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:59:38,016 INFO L225 Difference]: With dead ends: 432 [2021-12-21 13:59:38,017 INFO L226 Difference]: Without dead ends: 398 [2021-12-21 13:59:38,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:59:38,019 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 307 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:59:38,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1225 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:59:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-12-21 13:59:38,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2021-12-21 13:59:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 243 states have (on average 1.522633744855967) internal successors, (370), 247 states have internal predecessors, (370), 135 states have call successors, (135), 18 states have call predecessors, (135), 18 states have return successors, (143), 135 states have call predecessors, (143), 135 states have call successors, (143) [2021-12-21 13:59:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 648 transitions. [2021-12-21 13:59:38,110 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 648 transitions. Word has length 94 [2021-12-21 13:59:38,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:59:38,111 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 648 transitions. [2021-12-21 13:59:38,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 13:59:38,111 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 648 transitions. [2021-12-21 13:59:38,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-21 13:59:38,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:59:38,120 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:59:38,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 13:59:38,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:59:38,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:59:38,121 INFO L85 PathProgramCache]: Analyzing trace with hash -800885455, now seen corresponding path program 1 times [2021-12-21 13:59:38,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:59:38,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319869353] [2021-12-21 13:59:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:59:38,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:59:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:47,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 13:59:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:59:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:59:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 13:59:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:59:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:59:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:59:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:59:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 13:59:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:59:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:59:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:59:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:59:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:59:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:59:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:59:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:59:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 13:59:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 13:59:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 13:59:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:59:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 13:59:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 13:59:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 13:59:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-21 13:59:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-21 13:59:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 13:59:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-12-21 13:59:48,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:59:48,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319869353] [2021-12-21 13:59:48,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319869353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:59:48,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:59:48,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 13:59:48,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526146948] [2021-12-21 13:59:48,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:59:48,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 13:59:48,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:59:48,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 13:59:48,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:59:48,240 INFO L87 Difference]: Start difference. First operand 397 states and 648 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2021-12-21 13:59:50,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 13:59:52,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:59:52,126 INFO L93 Difference]: Finished difference Result 1402 states and 2348 transitions. [2021-12-21 13:59:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 13:59:52,132 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 183 [2021-12-21 13:59:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:59:52,142 INFO L225 Difference]: With dead ends: 1402 [2021-12-21 13:59:52,143 INFO L226 Difference]: Without dead ends: 1014 [2021-12-21 13:59:52,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-12-21 13:59:52,147 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 708 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 534 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:59:52,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 1872 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1203 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-12-21 13:59:52,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-12-21 13:59:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 893. [2021-12-21 13:59:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 542 states have (on average 1.529520295202952) internal successors, (829), 559 states have internal predecessors, (829), 307 states have call successors, (307), 36 states have call predecessors, (307), 43 states have return successors, (350), 307 states have call predecessors, (350), 307 states have call successors, (350) [2021-12-21 13:59:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1486 transitions. [2021-12-21 13:59:52,255 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1486 transitions. Word has length 183 [2021-12-21 13:59:52,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:59:52,255 INFO L470 AbstractCegarLoop]: Abstraction has 893 states and 1486 transitions. [2021-12-21 13:59:52,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2021-12-21 13:59:52,256 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1486 transitions. [2021-12-21 13:59:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-21 13:59:52,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:59:52,267 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:59:52,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 13:59:52,267 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:59:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:59:52,268 INFO L85 PathProgramCache]: Analyzing trace with hash -856649123, now seen corresponding path program 1 times [2021-12-21 13:59:52,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:59:52,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571816382] [2021-12-21 13:59:52,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:59:52,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:59:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 14:00:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 14:00:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:00:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:00:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:00:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:00:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:00:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:00:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 14:00:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:00:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 14:00:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:00:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:00:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 14:00:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 14:00:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:00:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 14:00:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 14:00:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 14:00:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 14:00:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 14:00:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 14:00:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 14:00:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 14:00:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-21 14:00:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-21 14:00:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:00:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-12-21 14:00:01,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:00:01,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571816382] [2021-12-21 14:00:01,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571816382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:00:01,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:00:01,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 14:00:01,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772147624] [2021-12-21 14:00:01,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:00:01,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 14:00:01,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:00:01,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 14:00:01,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-21 14:00:01,474 INFO L87 Difference]: Start difference. First operand 893 states and 1486 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2021-12-21 14:00:04,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 14:00:06,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 14:00:08,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 14:00:09,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 14:00:11,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:00:11,404 INFO L93 Difference]: Finished difference Result 1883 states and 3132 transitions. [2021-12-21 14:00:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 14:00:11,447 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 183 [2021-12-21 14:00:11,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:00:11,454 INFO L225 Difference]: With dead ends: 1883 [2021-12-21 14:00:11,454 INFO L226 Difference]: Without dead ends: 959 [2021-12-21 14:00:11,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-12-21 14:00:11,464 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 855 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 452 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:00:11,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 1567 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 1134 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2021-12-21 14:00:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-12-21 14:00:11,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 875. [2021-12-21 14:00:11,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 532 states have (on average 1.5244360902255638) internal successors, (811), 549 states have internal predecessors, (811), 299 states have call successors, (299), 35 states have call predecessors, (299), 43 states have return successors, (335), 300 states have call predecessors, (335), 299 states have call successors, (335) [2021-12-21 14:00:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1445 transitions. [2021-12-21 14:00:11,520 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1445 transitions. Word has length 183 [2021-12-21 14:00:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:00:11,521 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1445 transitions. [2021-12-21 14:00:11,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2021-12-21 14:00:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1445 transitions. [2021-12-21 14:00:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-21 14:00:11,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:00:11,531 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:00:11,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:00:11,531 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:00:11,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:00:11,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1909419641, now seen corresponding path program 1 times [2021-12-21 14:00:11,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:00:11,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303950875] [2021-12-21 14:00:11,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:00:11,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms