/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random7777.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_bench-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 23:49:05,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 23:49:05,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 23:49:05,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 23:49:05,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-06 23:49:05,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-06 23:49:05,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-06 23:49:05,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-06 23:49:05,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-06 23:49:05,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-06 23:49:05,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-06 23:49:05,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-06 23:49:05,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-06 23:49:05,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-06 23:49:05,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-06 23:49:05,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-06 23:49:05,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-06 23:49:05,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-06 23:49:05,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-06 23:49:05,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-06 23:49:05,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-06 23:49:05,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-06 23:49:05,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-06 23:49:05,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-06 23:49:05,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-06 23:49:05,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-06 23:49:05,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-06 23:49:05,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-06 23:49:05,560 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random7777.epf [2021-06-06 23:49:05,591 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 23:49:05,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 23:49:05,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 23:49:05,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 23:49:05,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 23:49:05,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 23:49:05,594 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 23:49:05,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 23:49:05,594 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 23:49:05,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 23:49:05,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 23:49:05,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 23:49:05,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 23:49:05,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 23:49:05,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 23:49:05,596 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 23:49:05,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 23:49:05,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 23:49:05,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 23:49:05,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 23:49:05,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 23:49:05,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 23:49:05,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 23:49:05,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 23:49:05,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 23:49:05,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 23:49:05,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 23:49:05,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 23:49:05,597 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-06 23:49:05,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 23:49:05,598 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 23:49:05,598 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 23:49:05,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 23:49:05,598 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 23:49:05,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-06 23:49:05,598 INFO L138 SettingsManager]: * Random seed used by POR DFS order=7777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 23:49:05,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 23:49:05,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 23:49:05,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 23:49:05,941 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-06 23:49:05,942 INFO L275 PluginConnector]: CDTParser initialized [2021-06-06 23:49:05,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-1.i [2021-06-06 23:49:05,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2397a8643/ea727c1c5ba34f089fd43a9d67ef8718/FLAGca461cdce [2021-06-06 23:49:06,511 INFO L306 CDTParser]: Found 1 translation units. [2021-06-06 23:49:06,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-1.i [2021-06-06 23:49:06,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2397a8643/ea727c1c5ba34f089fd43a9d67ef8718/FLAGca461cdce [2021-06-06 23:49:06,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2397a8643/ea727c1c5ba34f089fd43a9d67ef8718 [2021-06-06 23:49:06,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 23:49:06,835 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-06 23:49:06,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-06 23:49:06,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-06 23:49:06,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-06 23:49:06,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.06 11:49:06" (1/1) ... [2021-06-06 23:49:06,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c510b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:06, skipping insertion in model container [2021-06-06 23:49:06,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.06 11:49:06" (1/1) ... [2021-06-06 23:49:06,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-06 23:49:06,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-06 23:49:07,186 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-1.i[30920,30933] [2021-06-06 23:49:07,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-06 23:49:07,199 INFO L203 MainTranslator]: Completed pre-run [2021-06-06 23:49:07,235 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-1.i[30920,30933] [2021-06-06 23:49:07,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-06 23:49:07,300 INFO L208 MainTranslator]: Completed translation [2021-06-06 23:49:07,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:07 WrapperNode [2021-06-06 23:49:07,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-06 23:49:07,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 23:49:07,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 23:49:07,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 23:49:07,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:07" (1/1) ... [2021-06-06 23:49:07,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:07" (1/1) ... [2021-06-06 23:49:07,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 23:49:07,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 23:49:07,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 23:49:07,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 23:49:07,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:07" (1/1) ... [2021-06-06 23:49:07,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:07" (1/1) ... [2021-06-06 23:49:07,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:07" (1/1) ... [2021-06-06 23:49:07,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:07" (1/1) ... [2021-06-06 23:49:07,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:07" (1/1) ... [2021-06-06 23:49:07,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:07" (1/1) ... [2021-06-06 23:49:07,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:07" (1/1) ... [2021-06-06 23:49:07,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 23:49:07,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 23:49:07,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 23:49:07,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 23:49:07,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 23:49:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-06-06 23:49:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-06-06 23:49:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-06-06 23:49:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-06-06 23:49:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-06 23:49:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-06 23:49:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-06 23:49:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-06 23:49:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-06 23:49:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-06 23:49:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 23:49:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 23:49:07,421 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 23:49:07,787 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 23:49:07,787 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-06 23:49:07,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 11:49:07 BoogieIcfgContainer [2021-06-06 23:49:07,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 23:49:07,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 23:49:07,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 23:49:07,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 23:49:07,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.06 11:49:06" (1/3) ... [2021-06-06 23:49:07,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa841a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 11:49:07, skipping insertion in model container [2021-06-06 23:49:07,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 11:49:07" (2/3) ... [2021-06-06 23:49:07,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa841a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 11:49:07, skipping insertion in model container [2021-06-06 23:49:07,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 11:49:07" (3/3) ... [2021-06-06 23:49:07,796 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench-1.i [2021-06-06 23:49:07,801 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 23:49:07,801 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 23:49:07,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 23:49:07,802 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 23:49:07,836 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,836 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,836 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,837 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,837 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,837 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,837 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,837 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,837 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,837 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,838 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,838 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,838 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,838 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,839 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,839 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,839 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,839 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,839 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,839 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,840 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,840 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,841 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,841 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,841 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,841 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,841 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,841 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,842 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,842 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,843 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,843 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,843 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,843 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,844 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,844 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,844 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,844 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,844 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,844 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,844 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,845 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,845 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,845 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,845 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,845 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,846 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,846 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,846 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,846 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,848 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,848 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,848 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,849 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,849 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,849 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,849 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,849 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,849 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,850 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,851 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,852 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,852 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,852 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,852 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,852 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,861 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,861 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,862 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,862 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,862 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,862 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 23:49:07,864 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-06 23:49:07,884 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 23:49:07,950 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 23:49:07,950 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 23:49:07,950 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 23:49:07,951 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 23:49:07,951 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 23:49:07,951 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 23:49:07,951 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 23:49:07,951 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 23:49:07,996 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:08,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:08,000 INFO L82 PathProgramCache]: Analyzing trace with hash 977576822, now seen corresponding path program 1 times [2021-06-06 23:49:08,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:08,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243976363] [2021-06-06 23:49:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:08,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:08,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243976363] [2021-06-06 23:49:08,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243976363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 23:49:08,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 23:49:08,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-06 23:49:08,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906271284] [2021-06-06 23:49:08,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-06 23:49:08,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:08,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-06 23:49:08,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-06 23:49:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:08,255 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:08,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:08,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:08,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:08,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 23:49:08,265 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:08,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:08,265 INFO L82 PathProgramCache]: Analyzing trace with hash 977606613, now seen corresponding path program 1 times [2021-06-06 23:49:08,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:08,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704878145] [2021-06-06 23:49:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:08,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:08,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704878145] [2021-06-06 23:49:08,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704878145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 23:49:08,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 23:49:08,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-06 23:49:08,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025722872] [2021-06-06 23:49:08,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 23:49:08,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:08,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 23:49:08,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 23:49:08,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:08,328 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:08,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:08,329 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:08,329 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:08,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:08,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:08,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 23:49:08,374 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:08,374 INFO L82 PathProgramCache]: Analyzing trace with hash 242025248, now seen corresponding path program 1 times [2021-06-06 23:49:08,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:08,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365704653] [2021-06-06 23:49:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:08,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:08,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365704653] [2021-06-06 23:49:08,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365704653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 23:49:08,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 23:49:08,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-06 23:49:08,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628183250] [2021-06-06 23:49:08,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 23:49:08,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:08,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 23:49:08,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-06 23:49:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:08,531 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:08,532 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:08,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:08,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:08,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:08,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-06 23:49:08,602 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:08,602 INFO L82 PathProgramCache]: Analyzing trace with hash 575193721, now seen corresponding path program 1 times [2021-06-06 23:49:08,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:08,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571581059] [2021-06-06 23:49:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:08,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:08,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571581059] [2021-06-06 23:49:08,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571581059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:08,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326668120] [2021-06-06 23:49:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:08,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 23:49:08,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:49:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:09,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326668120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:09,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:49:09,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-06-06 23:49:09,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640999022] [2021-06-06 23:49:09,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 23:49:09,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:09,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 23:49:09,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-06-06 23:49:09,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:09,293 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:09,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:09,294 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:09,294 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:09,294 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:09,294 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:09,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:09,597 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:09,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:09,598 INFO L82 PathProgramCache]: Analyzing trace with hash 522416473, now seen corresponding path program 2 times [2021-06-06 23:49:09,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:09,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980334167] [2021-06-06 23:49:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:09,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:09,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980334167] [2021-06-06 23:49:09,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980334167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:09,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258033475] [2021-06-06 23:49:09,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:09,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 23:49:09,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:49:09,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-06 23:49:09,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:49:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:10,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258033475] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:10,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:49:10,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 23:49:10,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376402534] [2021-06-06 23:49:10,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 23:49:10,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:10,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 23:49:10,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-06-06 23:49:10,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:10,176 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:10,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:10,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:10,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:10,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:10,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:10,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:10,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:10,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:10,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:10,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 23:49:10,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:10,489 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:10,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:10,490 INFO L82 PathProgramCache]: Analyzing trace with hash 219744313, now seen corresponding path program 3 times [2021-06-06 23:49:10,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:10,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333652416] [2021-06-06 23:49:10,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 72 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:10,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:10,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333652416] [2021-06-06 23:49:10,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333652416] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:10,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446951208] [2021-06-06 23:49:10,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:10,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-06 23:49:10,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:49:10,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-06 23:49:10,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:49:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 23:49:10,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446951208] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 23:49:10,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-06 23:49:10,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 17 [2021-06-06 23:49:10,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114382316] [2021-06-06 23:49:10,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 23:49:10,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:10,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 23:49:10,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-06-06 23:49:10,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:10,880 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:10,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:10,880 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:10,880 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:10,880 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:10,880 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:10,880 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 23:49:10,880 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:49:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:11,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:11,402 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:11,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:11,402 INFO L82 PathProgramCache]: Analyzing trace with hash -892997273, now seen corresponding path program 1 times [2021-06-06 23:49:11,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:11,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748135759] [2021-06-06 23:49:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:11,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:11,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748135759] [2021-06-06 23:49:11,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748135759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:11,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862041714] [2021-06-06 23:49:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:11,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-06 23:49:11,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:49:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:12,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862041714] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:12,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:49:12,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-06-06 23:49:12,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464736621] [2021-06-06 23:49:12,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-06 23:49:12,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:12,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-06 23:49:12,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-06-06 23:49:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:12,081 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:12,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 6.0476190476190474) internal successors, (127), 21 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:12,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:12,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:12,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:12,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:12,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:49:12,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:12,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:49:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:12,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:12,417 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:12,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:12,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1331780290, now seen corresponding path program 1 times [2021-06-06 23:49:12,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:12,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959842468] [2021-06-06 23:49:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:12,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:12,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959842468] [2021-06-06 23:49:12,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959842468] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:12,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937395257] [2021-06-06 23:49:12,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:12,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-06 23:49:12,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:49:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:13,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937395257] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:13,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:49:13,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-06 23:49:13,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99250399] [2021-06-06 23:49:13,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 23:49:13,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:13,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 23:49:13,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-06-06 23:49:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:13,021 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:13,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:13,021 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:13,021 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:13,021 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:13,021 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:13,021 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:49:13,022 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:13,022 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:13,022 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:49:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:49:13,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:13,389 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:13,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:13,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1003000391, now seen corresponding path program 2 times [2021-06-06 23:49:13,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:13,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681421695] [2021-06-06 23:49:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:13,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:13,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681421695] [2021-06-06 23:49:13,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681421695] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:13,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623690683] [2021-06-06 23:49:13,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:13,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 23:49:13,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:49:13,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-06 23:49:13,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:49:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:13,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623690683] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:13,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:49:13,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-06-06 23:49:13,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604504314] [2021-06-06 23:49:13,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 23:49:13,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:13,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 23:49:13,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2021-06-06 23:49:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:13,999 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:13,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 6.083333333333333) internal successors, (146), 24 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:13,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:14,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:14,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:14,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:14,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:49:14,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:14,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:14,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:49:14,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:49:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:49:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:14,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:14,413 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:14,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1254079006, now seen corresponding path program 3 times [2021-06-06 23:49:14,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:14,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803472564] [2021-06-06 23:49:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:14,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:14,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803472564] [2021-06-06 23:49:14,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803472564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:14,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605263421] [2021-06-06 23:49:14,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:14,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 23:49:14,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:49:14,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-06 23:49:14,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:49:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:15,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605263421] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:15,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:49:15,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2021-06-06 23:49:15,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414603099] [2021-06-06 23:49:15,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-06 23:49:15,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:15,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-06 23:49:15,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2021-06-06 23:49:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:15,091 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:15,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 6.0) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:15,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:15,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:15,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:15,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:15,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:49:15,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:15,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:15,092 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:49:15,092 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:15,092 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:49:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:15,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:15,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:49:15,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:15,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 23:49:15,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-06 23:49:15,529 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:15,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:15,529 INFO L82 PathProgramCache]: Analyzing trace with hash 169843495, now seen corresponding path program 4 times [2021-06-06 23:49:15,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:15,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430704319] [2021-06-06 23:49:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:15,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:15,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430704319] [2021-06-06 23:49:15,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430704319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:15,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9042815] [2021-06-06 23:49:15,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:15,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 23:49:15,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:49:15,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-06 23:49:15,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:49:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:16,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9042815] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:16,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:49:16,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2021-06-06 23:49:16,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967855631] [2021-06-06 23:49:16,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-06 23:49:16,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:16,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-06 23:49:16,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-06-06 23:49:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:16,285 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:16,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.758620689655173) internal successors, (167), 29 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:16,285 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:16,285 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:16,285 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:16,285 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:16,285 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:49:16,285 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:16,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:16,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:49:16,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:16,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 23:49:16,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:49:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:49:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 23:49:16,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 23:49:16,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-06 23:49:16,799 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:16,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:16,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1783351554, now seen corresponding path program 5 times [2021-06-06 23:49:16,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:16,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776310621] [2021-06-06 23:49:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:16,906 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 43 proven. 17 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-06 23:49:16,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:16,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776310621] [2021-06-06 23:49:16,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776310621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:16,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971962992] [2021-06-06 23:49:16,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:16,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-06 23:49:16,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:49:16,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-06 23:49:16,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:49:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-06 23:49:17,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971962992] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 23:49:17,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-06 23:49:17,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2021-06-06 23:49:17,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591234167] [2021-06-06 23:49:17,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 23:49:17,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:17,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 23:49:17,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-06 23:49:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:17,142 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:17,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:17,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:17,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:17,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:17,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:17,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:49:17,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:17,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:17,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:49:17,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:17,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 23:49:17,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-06 23:49:17,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:49:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 23:49:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 23:49:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:49:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:19,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:19,132 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:19,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1616249833, now seen corresponding path program 6 times [2021-06-06 23:49:19,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:19,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294034856] [2021-06-06 23:49:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:19,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:19,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294034856] [2021-06-06 23:49:19,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294034856] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:19,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431708336] [2021-06-06 23:49:19,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:19,375 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-06 23:49:19,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:49:19,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-06 23:49:19,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:49:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:19,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431708336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:19,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:49:19,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-06-06 23:49:19,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005569247] [2021-06-06 23:49:19,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 23:49:19,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:49:19,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 23:49:19,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-06-06 23:49:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:19,823 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:49:19,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 6.083333333333333) internal successors, (146), 24 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:49:19,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:19,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:19,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:19,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:19,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:19,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:19,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:49:19,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:19,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 23:49:19,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-06 23:49:19,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:49:19,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:19,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:49:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 23:49:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 23:49:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 23:49:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 23:49:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:49:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 23:49:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 23:49:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:49:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 23:49:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 23:49:20,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:20,757 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-06 23:49:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:49:20,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1222805888, now seen corresponding path program 7 times [2021-06-06 23:49:20,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:49:20,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963373808] [2021-06-06 23:49:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:49:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:49:20,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:49:20,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963373808] [2021-06-06 23:49:20,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963373808] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:49:20,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829146597] [2021-06-06 23:49:20,922 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:49:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:49:20,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-06 23:49:20,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown