/usr/bin/java -Xmx8000000000 -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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 16:23:47,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 16:23:47,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 16:23:47,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 16:23:47,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 16:23:47,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 16:23:47,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 16:23:47,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 16:23:47,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 16:23:47,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 16:23:47,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 16:23:47,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 16:23:47,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 16:23:47,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 16:23:47,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 16:23:47,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 16:23:47,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 16:23:47,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 16:23:47,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 16:23:47,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 16:23:47,613 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-FA-NoLbe.epf [2021-07-09 16:23:47,640 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 16:23:47,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 16:23:47,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 16:23:47,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 16:23:47,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 16:23:47,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 16:23:47,643 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 16:23:47,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 16:23:47,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 16:23:47,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 16:23:47,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 16:23:47,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 16:23:47,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 16:23:47,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 16:23:47,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 16:23:47,645 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 16:23:47,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 16:23:47,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 16:23:47,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 16:23:47,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 16:23:47,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 16:23:47,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 16:23:47,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 16:23:47,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:23:47,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 16:23:47,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 16:23:47,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 16:23:47,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 16:23:47,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 16:23:47,646 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 16:23:47,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 16:23:47,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 16:23:47,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 16:23:47,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 16:23:47,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 16:23:47,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 16:23:47,864 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 16:23:47,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2021-07-09 16:23:47,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f5294ada/d3729c39d9734edb82a66498bd77c9ee/FLAG25aba1c0d [2021-07-09 16:23:48,349 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 16:23:48,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2021-07-09 16:23:48,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f5294ada/d3729c39d9734edb82a66498bd77c9ee/FLAG25aba1c0d [2021-07-09 16:23:48,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f5294ada/d3729c39d9734edb82a66498bd77c9ee [2021-07-09 16:23:48,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 16:23:48,709 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 16:23:48,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 16:23:48,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 16:23:48,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 16:23:48,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:23:48" (1/1) ... [2021-07-09 16:23:48,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c15ebe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:48, skipping insertion in model container [2021-07-09 16:23:48,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:23:48" (1/1) ... [2021-07-09 16:23:48,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 16:23:48,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 16:23:48,986 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/triangular-1.i[30950,30963] [2021-07-09 16:23:48,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:23:48,997 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 16:23:49,035 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/triangular-1.i[30950,30963] [2021-07-09 16:23:49,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:23:49,065 INFO L208 MainTranslator]: Completed translation [2021-07-09 16:23:49,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:49 WrapperNode [2021-07-09 16:23:49,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 16:23:49,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 16:23:49,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 16:23:49,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 16:23:49,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:49" (1/1) ... [2021-07-09 16:23:49,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:49" (1/1) ... [2021-07-09 16:23:49,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 16:23:49,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 16:23:49,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 16:23:49,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 16:23:49,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:49" (1/1) ... [2021-07-09 16:23:49,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:49" (1/1) ... [2021-07-09 16:23:49,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:49" (1/1) ... [2021-07-09 16:23:49,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:49" (1/1) ... [2021-07-09 16:23:49,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:49" (1/1) ... [2021-07-09 16:23:49,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:49" (1/1) ... [2021-07-09 16:23:49,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:49" (1/1) ... [2021-07-09 16:23:49,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 16:23:49,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 16:23:49,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 16:23:49,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 16:23:49,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:49" (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 [2021-07-09 16:23:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-07-09 16:23:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-07-09 16:23:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-07-09 16:23:49,198 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-07-09 16:23:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 16:23:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 16:23:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 16:23:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 16:23:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 16:23:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 16:23:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 16:23:49,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 16:23:49,201 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 16:23:49,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 16:23:49,502 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-07-09 16:23:49,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:23:49 BoogieIcfgContainer [2021-07-09 16:23:49,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 16:23:49,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 16:23:49,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 16:23:49,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 16:23:49,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 04:23:48" (1/3) ... [2021-07-09 16:23:49,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163d3022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:23:49, skipping insertion in model container [2021-07-09 16:23:49,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:23:49" (2/3) ... [2021-07-09 16:23:49,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163d3022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:23:49, skipping insertion in model container [2021-07-09 16:23:49,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:23:49" (3/3) ... [2021-07-09 16:23:49,510 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2021-07-09 16:23:49,514 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 16:23:49,514 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 16:23:49,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 16:23:49,515 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 16:23:49,540 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,540 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,540 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,540 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,540 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,541 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,541 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,541 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,541 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,541 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,542 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,542 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,542 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,542 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,542 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,542 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,543 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,543 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,543 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,543 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,543 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,543 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,543 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,544 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,544 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,544 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,544 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,545 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,545 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,545 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,545 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,545 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,546 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,546 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,546 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,546 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,546 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,547 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,547 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,547 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,547 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,547 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,547 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,547 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,547 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,548 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,548 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,548 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,548 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,550 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,550 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,551 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,552 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,552 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,552 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,552 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,552 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,557 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,557 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,557 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,557 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,558 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,558 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:23:49,559 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 16:23:49,575 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 16:23:49,593 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 16:23:49,594 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 16:23:49,594 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 16:23:49,594 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 16:23:49,594 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 16:23:49,594 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 16:23:49,594 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 16:23:49,594 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 16:23:49,603 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 66 transitions, 142 flow [2021-07-09 16:23:49,650 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 780 states, 779 states have (on average 2.934531450577664) internal successors, (2286), 779 states have internal predecessors, (2286), 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) [2021-07-09 16:23:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 780 states, 779 states have (on average 2.934531450577664) internal successors, (2286), 779 states have internal predecessors, (2286), 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) [2021-07-09 16:23:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-09 16:23:49,665 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:49,665 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:49,665 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:49,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:49,668 INFO L82 PathProgramCache]: Analyzing trace with hash 855509438, now seen corresponding path program 1 times [2021-07-09 16:23:49,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:49,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128506998] [2021-07-09 16:23:49,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:49,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:49,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128506998] [2021-07-09 16:23:49,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128506998] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:23:49,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:23:49,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:23:49,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041236921] [2021-07-09 16:23:49,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:23:49,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:49,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:23:49,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:23:49,898 INFO L87 Difference]: Start difference. First operand has 780 states, 779 states have (on average 2.934531450577664) internal successors, (2286), 779 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2021-07-09 16:23:50,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:50,078 INFO L93 Difference]: Finished difference Result 1539 states and 4126 transitions. [2021-07-09 16:23:50,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:23:50,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-09 16:23:50,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:50,108 INFO L225 Difference]: With dead ends: 1539 [2021-07-09 16:23:50,108 INFO L226 Difference]: Without dead ends: 1242 [2021-07-09 16:23:50,109 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 71.7ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-09 16:23:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-07-09 16:23:50,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 942. [2021-07-09 16:23:50,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.7077577045696066) internal successors, (2548), 941 states have internal predecessors, (2548), 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) [2021-07-09 16:23:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2548 transitions. [2021-07-09 16:23:50,211 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2548 transitions. Word has length 32 [2021-07-09 16:23:50,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:50,212 INFO L482 AbstractCegarLoop]: Abstraction has 942 states and 2548 transitions. [2021-07-09 16:23:50,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2021-07-09 16:23:50,212 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2548 transitions. [2021-07-09 16:23:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 16:23:50,215 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:50,215 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:50,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 16:23:50,215 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:50,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1155051277, now seen corresponding path program 1 times [2021-07-09 16:23:50,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:50,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609026022] [2021-07-09 16:23:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:50,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:50,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609026022] [2021-07-09 16:23:50,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609026022] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:23:50,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:23:50,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:23:50,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155377295] [2021-07-09 16:23:50,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:23:50,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:50,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:23:50,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:23:50,342 INFO L87 Difference]: Start difference. First operand 942 states and 2548 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:23:50,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:50,462 INFO L93 Difference]: Finished difference Result 1194 states and 3180 transitions. [2021-07-09 16:23:50,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 16:23:50,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-07-09 16:23:50,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:50,469 INFO L225 Difference]: With dead ends: 1194 [2021-07-09 16:23:50,469 INFO L226 Difference]: Without dead ends: 942 [2021-07-09 16:23:50,469 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.2ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-09 16:23:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-07-09 16:23:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 800. [2021-07-09 16:23:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 2.728410513141427) internal successors, (2180), 799 states have internal predecessors, (2180), 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) [2021-07-09 16:23:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2180 transitions. [2021-07-09 16:23:50,502 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2180 transitions. Word has length 36 [2021-07-09 16:23:50,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:50,503 INFO L482 AbstractCegarLoop]: Abstraction has 800 states and 2180 transitions. [2021-07-09 16:23:50,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:23:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2180 transitions. [2021-07-09 16:23:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 16:23:50,507 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:50,507 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:50,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 16:23:50,507 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:50,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:50,513 INFO L82 PathProgramCache]: Analyzing trace with hash 2058414913, now seen corresponding path program 1 times [2021-07-09 16:23:50,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:50,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445195749] [2021-07-09 16:23:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:50,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:50,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445195749] [2021-07-09 16:23:50,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445195749] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:23:50,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:23:50,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:23:50,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20433265] [2021-07-09 16:23:50,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:23:50,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:50,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:23:50,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:23:50,600 INFO L87 Difference]: Start difference. First operand 800 states and 2180 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:23:50,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:50,682 INFO L93 Difference]: Finished difference Result 1302 states and 3436 transitions. [2021-07-09 16:23:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:23:50,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-07-09 16:23:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:50,686 INFO L225 Difference]: With dead ends: 1302 [2021-07-09 16:23:50,687 INFO L226 Difference]: Without dead ends: 920 [2021-07-09 16:23:50,688 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-09 16:23:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-07-09 16:23:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 864. [2021-07-09 16:23:50,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 2.6882966396292005) internal successors, (2320), 863 states have internal predecessors, (2320), 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) [2021-07-09 16:23:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2320 transitions. [2021-07-09 16:23:50,707 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2320 transitions. Word has length 36 [2021-07-09 16:23:50,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:50,708 INFO L482 AbstractCegarLoop]: Abstraction has 864 states and 2320 transitions. [2021-07-09 16:23:50,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:23:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2320 transitions. [2021-07-09 16:23:50,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-07-09 16:23:50,710 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:50,711 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:50,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 16:23:50,711 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:50,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:50,712 INFO L82 PathProgramCache]: Analyzing trace with hash -262940086, now seen corresponding path program 1 times [2021-07-09 16:23:50,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:50,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324624286] [2021-07-09 16:23:50,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:50,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:50,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324624286] [2021-07-09 16:23:50,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324624286] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:23:50,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:23:50,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:23:50,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768650198] [2021-07-09 16:23:50,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:23:50,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:50,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:23:50,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:23:50,823 INFO L87 Difference]: Start difference. First operand 864 states and 2320 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-07-09 16:23:50,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:50,959 INFO L93 Difference]: Finished difference Result 1304 states and 3456 transitions. [2021-07-09 16:23:50,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 16:23:50,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-07-09 16:23:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:50,963 INFO L225 Difference]: With dead ends: 1304 [2021-07-09 16:23:50,964 INFO L226 Difference]: Without dead ends: 1044 [2021-07-09 16:23:50,964 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 108.8ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-07-09 16:23:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-07-09 16:23:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 876. [2021-07-09 16:23:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.7062857142857144) internal successors, (2368), 875 states have internal predecessors, (2368), 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) [2021-07-09 16:23:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2368 transitions. [2021-07-09 16:23:50,981 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2368 transitions. Word has length 40 [2021-07-09 16:23:50,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:50,982 INFO L482 AbstractCegarLoop]: Abstraction has 876 states and 2368 transitions. [2021-07-09 16:23:50,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-07-09 16:23:50,982 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2368 transitions. [2021-07-09 16:23:50,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-07-09 16:23:50,983 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:50,983 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:50,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 16:23:50,983 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:50,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:50,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1449045748, now seen corresponding path program 2 times [2021-07-09 16:23:50,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:50,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829621724] [2021-07-09 16:23:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:51,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:51,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829621724] [2021-07-09 16:23:51,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829621724] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:23:51,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:23:51,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:23:51,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072740566] [2021-07-09 16:23:51,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:23:51,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:51,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:23:51,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:23:51,042 INFO L87 Difference]: Start difference. First operand 876 states and 2368 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-07-09 16:23:51,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:51,142 INFO L93 Difference]: Finished difference Result 1524 states and 4056 transitions. [2021-07-09 16:23:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 16:23:51,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-07-09 16:23:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:51,147 INFO L225 Difference]: With dead ends: 1524 [2021-07-09 16:23:51,147 INFO L226 Difference]: Without dead ends: 1131 [2021-07-09 16:23:51,147 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-09 16:23:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-07-09 16:23:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1033. [2021-07-09 16:23:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1032 states have (on average 2.73546511627907) internal successors, (2823), 1032 states have internal predecessors, (2823), 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) [2021-07-09 16:23:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 2823 transitions. [2021-07-09 16:23:51,167 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 2823 transitions. Word has length 40 [2021-07-09 16:23:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:51,167 INFO L482 AbstractCegarLoop]: Abstraction has 1033 states and 2823 transitions. [2021-07-09 16:23:51,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-07-09 16:23:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 2823 transitions. [2021-07-09 16:23:51,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-07-09 16:23:51,168 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:51,168 INFO L508 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:51,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 16:23:51,168 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:51,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:51,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1733061585, now seen corresponding path program 1 times [2021-07-09 16:23:51,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:51,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804689747] [2021-07-09 16:23:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:51,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:51,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804689747] [2021-07-09 16:23:51,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804689747] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:51,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085313532] [2021-07-09 16:23:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:23:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:51,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-09 16:23:51,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:23:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:51,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085313532] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:51,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:23:51,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-07-09 16:23:51,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460902237] [2021-07-09 16:23:51,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 16:23:51,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:51,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 16:23:51,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-07-09 16:23:51,557 INFO L87 Difference]: Start difference. First operand 1033 states and 2823 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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) [2021-07-09 16:23:51,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:51,778 INFO L93 Difference]: Finished difference Result 2071 states and 5539 transitions. [2021-07-09 16:23:51,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-09 16:23:51,778 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-07-09 16:23:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:51,784 INFO L225 Difference]: With dead ends: 2071 [2021-07-09 16:23:51,786 INFO L226 Difference]: Without dead ends: 1481 [2021-07-09 16:23:51,787 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 191.2ms TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2021-07-09 16:23:51,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2021-07-09 16:23:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1253. [2021-07-09 16:23:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 2.7619808306709266) internal successors, (3458), 1252 states have internal predecessors, (3458), 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) [2021-07-09 16:23:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3458 transitions. [2021-07-09 16:23:51,819 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3458 transitions. Word has length 45 [2021-07-09 16:23:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:51,819 INFO L482 AbstractCegarLoop]: Abstraction has 1253 states and 3458 transitions. [2021-07-09 16:23:51,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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) [2021-07-09 16:23:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3458 transitions. [2021-07-09 16:23:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-07-09 16:23:51,821 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:51,821 INFO L508 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:52,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-09 16:23:52,041 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:52,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:52,042 INFO L82 PathProgramCache]: Analyzing trace with hash -4578824, now seen corresponding path program 1 times [2021-07-09 16:23:52,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:52,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478133115] [2021-07-09 16:23:52,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:52,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:52,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478133115] [2021-07-09 16:23:52,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478133115] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:52,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655249384] [2021-07-09 16:23:52,133 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 [2021-07-09 16:23:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:52,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-09 16:23:52,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:23:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:52,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655249384] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:52,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:23:52,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-07-09 16:23:52,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116597580] [2021-07-09 16:23:52,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 16:23:52,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:52,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 16:23:52,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-07-09 16:23:52,306 INFO L87 Difference]: Start difference. First operand 1253 states and 3458 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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) [2021-07-09 16:23:52,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:52,439 INFO L93 Difference]: Finished difference Result 2398 states and 6444 transitions. [2021-07-09 16:23:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 16:23:52,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-07-09 16:23:52,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:52,449 INFO L225 Difference]: With dead ends: 2398 [2021-07-09 16:23:52,449 INFO L226 Difference]: Without dead ends: 1926 [2021-07-09 16:23:52,450 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-07-09 16:23:52,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2021-07-09 16:23:52,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1456. [2021-07-09 16:23:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 2.727835051546392) internal successors, (3969), 1455 states have internal predecessors, (3969), 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) [2021-07-09 16:23:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 3969 transitions. [2021-07-09 16:23:52,481 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 3969 transitions. Word has length 45 [2021-07-09 16:23:52,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:52,482 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 3969 transitions. [2021-07-09 16:23:52,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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) [2021-07-09 16:23:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 3969 transitions. [2021-07-09 16:23:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-09 16:23:52,484 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:52,484 INFO L508 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:52,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:23:52,701 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:52,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:52,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1431609058, now seen corresponding path program 1 times [2021-07-09 16:23:52,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:52,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027486202] [2021-07-09 16:23:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:52,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:52,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027486202] [2021-07-09 16:23:52,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027486202] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:52,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173022180] [2021-07-09 16:23:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-07-09 16:23:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:52,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-09 16:23:52,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:23:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:52,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173022180] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:52,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:23:52,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-07-09 16:23:52,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631422688] [2021-07-09 16:23:52,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-09 16:23:52,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:52,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-09 16:23:52,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-07-09 16:23:52,980 INFO L87 Difference]: Start difference. First operand 1456 states and 3969 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 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) [2021-07-09 16:23:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:53,305 INFO L93 Difference]: Finished difference Result 3181 states and 8585 transitions. [2021-07-09 16:23:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-09 16:23:53,305 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-07-09 16:23:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:53,314 INFO L225 Difference]: With dead ends: 3181 [2021-07-09 16:23:53,314 INFO L226 Difference]: Without dead ends: 2281 [2021-07-09 16:23:53,314 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 266.5ms TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2021-07-09 16:23:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2281 states. [2021-07-09 16:23:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2281 to 1656. [2021-07-09 16:23:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1655 states have (on average 2.730513595166163) internal successors, (4519), 1655 states have internal predecessors, (4519), 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) [2021-07-09 16:23:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 4519 transitions. [2021-07-09 16:23:53,360 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 4519 transitions. Word has length 55 [2021-07-09 16:23:53,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:53,360 INFO L482 AbstractCegarLoop]: Abstraction has 1656 states and 4519 transitions. [2021-07-09 16:23:53,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 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) [2021-07-09 16:23:53,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 4519 transitions. [2021-07-09 16:23:53,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-09 16:23:53,363 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:53,363 INFO L508 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:53,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:23:53,577 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:53,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:53,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1291036999, now seen corresponding path program 2 times [2021-07-09 16:23:53,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:53,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763018700] [2021-07-09 16:23:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:53,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:53,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763018700] [2021-07-09 16:23:53,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763018700] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:53,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922679557] [2021-07-09 16:23:53,650 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 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 [2021-07-09 16:23:53,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 16:23:53,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:23:53,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-09 16:23:53,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:23:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:53,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922679557] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:53,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:23:53,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-07-09 16:23:53,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404639175] [2021-07-09 16:23:53,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-09 16:23:53,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:53,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-09 16:23:53,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-07-09 16:23:53,820 INFO L87 Difference]: Start difference. First operand 1656 states and 4519 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 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) [2021-07-09 16:23:54,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:54,049 INFO L93 Difference]: Finished difference Result 3238 states and 8770 transitions. [2021-07-09 16:23:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-09 16:23:54,051 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-07-09 16:23:54,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:54,058 INFO L225 Difference]: With dead ends: 3238 [2021-07-09 16:23:54,059 INFO L226 Difference]: Without dead ends: 2426 [2021-07-09 16:23:54,059 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 172.9ms TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2021-07-09 16:23:54,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-07-09 16:23:54,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1856. [2021-07-09 16:23:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 2.7326145552560646) internal successors, (5069), 1855 states have internal predecessors, (5069), 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) [2021-07-09 16:23:54,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 5069 transitions. [2021-07-09 16:23:54,095 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 5069 transitions. Word has length 55 [2021-07-09 16:23:54,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:54,095 INFO L482 AbstractCegarLoop]: Abstraction has 1856 states and 5069 transitions. [2021-07-09 16:23:54,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 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) [2021-07-09 16:23:54,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 5069 transitions. [2021-07-09 16:23:54,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-07-09 16:23:54,098 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:54,098 INFO L508 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:54,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:23:54,313 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:54,313 INFO L82 PathProgramCache]: Analyzing trace with hash -869732173, now seen corresponding path program 3 times [2021-07-09 16:23:54,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:54,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320591782] [2021-07-09 16:23:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:54,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:54,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320591782] [2021-07-09 16:23:54,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320591782] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:54,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435265086] [2021-07-09 16:23:54,391 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 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 [2021-07-09 16:23:54,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-09 16:23:54,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:23:54,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-09 16:23:54,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:23:54,576 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:54,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435265086] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:54,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:23:54,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-07-09 16:23:54,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603973598] [2021-07-09 16:23:54,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-09 16:23:54,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:54,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-09 16:23:54,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-07-09 16:23:54,577 INFO L87 Difference]: Start difference. First operand 1856 states and 5069 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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) [2021-07-09 16:23:54,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:54,905 INFO L93 Difference]: Finished difference Result 3085 states and 8445 transitions. [2021-07-09 16:23:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-09 16:23:54,906 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-07-09 16:23:54,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:54,913 INFO L225 Difference]: With dead ends: 3085 [2021-07-09 16:23:54,913 INFO L226 Difference]: Without dead ends: 2271 [2021-07-09 16:23:54,913 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 268.0ms TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-07-09 16:23:54,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2021-07-09 16:23:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2086. [2021-07-09 16:23:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 2085 states have (on average 2.7525179856115107) internal successors, (5739), 2085 states have internal predecessors, (5739), 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) [2021-07-09 16:23:54,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 5739 transitions. [2021-07-09 16:23:54,944 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 5739 transitions. Word has length 65 [2021-07-09 16:23:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:54,944 INFO L482 AbstractCegarLoop]: Abstraction has 2086 states and 5739 transitions. [2021-07-09 16:23:54,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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) [2021-07-09 16:23:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 5739 transitions. [2021-07-09 16:23:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-07-09 16:23:54,947 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:54,947 INFO L508 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:55,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-07-09 16:23:55,161 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:55,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:55,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1279026730, now seen corresponding path program 4 times [2021-07-09 16:23:55,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:55,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371751325] [2021-07-09 16:23:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:55,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:55,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371751325] [2021-07-09 16:23:55,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371751325] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:55,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136503741] [2021-07-09 16:23:55,234 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 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 [2021-07-09 16:23:55,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-09 16:23:55,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:23:55,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-09 16:23:55,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:23:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:55,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136503741] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:55,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:23:55,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-07-09 16:23:55,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297436251] [2021-07-09 16:23:55,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-09 16:23:55,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:55,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-09 16:23:55,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-07-09 16:23:55,406 INFO L87 Difference]: Start difference. First operand 2086 states and 5739 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 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) [2021-07-09 16:23:55,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:55,701 INFO L93 Difference]: Finished difference Result 3503 states and 9510 transitions. [2021-07-09 16:23:55,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-09 16:23:55,701 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-07-09 16:23:55,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:55,709 INFO L225 Difference]: With dead ends: 3503 [2021-07-09 16:23:55,709 INFO L226 Difference]: Without dead ends: 2691 [2021-07-09 16:23:55,709 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 250.2ms TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2021-07-09 16:23:55,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2021-07-09 16:23:55,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2286. [2021-07-09 16:23:55,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 2285 states have (on average 2.7522975929978117) internal successors, (6289), 2285 states have internal predecessors, (6289), 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) [2021-07-09 16:23:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 6289 transitions. [2021-07-09 16:23:55,744 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 6289 transitions. Word has length 65 [2021-07-09 16:23:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:55,744 INFO L482 AbstractCegarLoop]: Abstraction has 2286 states and 6289 transitions. [2021-07-09 16:23:55,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 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) [2021-07-09 16:23:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 6289 transitions. [2021-07-09 16:23:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 16:23:55,747 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:55,747 INFO L508 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:55,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:23:55,963 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:55,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1253969596, now seen corresponding path program 5 times [2021-07-09 16:23:55,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:55,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219122020] [2021-07-09 16:23:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:56,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:56,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219122020] [2021-07-09 16:23:56,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219122020] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:56,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760566912] [2021-07-09 16:23:56,042 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 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 [2021-07-09 16:23:56,102 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-07-09 16:23:56,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:23:56,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-07-09 16:23:56,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:23:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:56,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760566912] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:56,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:23:56,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-07-09 16:23:56,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250519290] [2021-07-09 16:23:56,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 16:23:56,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:56,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 16:23:56,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:23:56,210 INFO L87 Difference]: Start difference. First operand 2286 states and 6289 transitions. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 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) [2021-07-09 16:23:56,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:56,586 INFO L93 Difference]: Finished difference Result 3075 states and 8409 transitions. [2021-07-09 16:23:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-09 16:23:56,586 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-07-09 16:23:56,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:56,592 INFO L225 Difference]: With dead ends: 3075 [2021-07-09 16:23:56,592 INFO L226 Difference]: Without dead ends: 2571 [2021-07-09 16:23:56,592 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 325.3ms TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-07-09 16:23:56,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2021-07-09 16:23:56,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2486. [2021-07-09 16:23:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2485 states have (on average 2.752112676056338) internal successors, (6839), 2485 states have internal predecessors, (6839), 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) [2021-07-09 16:23:56,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 6839 transitions. [2021-07-09 16:23:56,628 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 6839 transitions. Word has length 75 [2021-07-09 16:23:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:56,628 INFO L482 AbstractCegarLoop]: Abstraction has 2486 states and 6839 transitions. [2021-07-09 16:23:56,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 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) [2021-07-09 16:23:56,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 6839 transitions. [2021-07-09 16:23:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 16:23:56,632 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:56,632 INFO L508 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:56,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-07-09 16:23:56,845 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:56,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1222155355, now seen corresponding path program 6 times [2021-07-09 16:23:56,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:56,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50912872] [2021-07-09 16:23:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:56,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:56,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50912872] [2021-07-09 16:23:56,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50912872] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:56,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872544910] [2021-07-09 16:23:56,927 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 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 [2021-07-09 16:23:57,006 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-07-09 16:23:57,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:23:57,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-07-09 16:23:57,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:23:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:57,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872544910] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:57,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:23:57,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-07-09 16:23:57,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993378172] [2021-07-09 16:23:57,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 16:23:57,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:57,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 16:23:57,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:23:57,120 INFO L87 Difference]: Start difference. First operand 2486 states and 6839 transitions. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 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) [2021-07-09 16:23:57,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:57,465 INFO L93 Difference]: Finished difference Result 3315 states and 9039 transitions. [2021-07-09 16:23:57,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-09 16:23:57,465 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-07-09 16:23:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:57,470 INFO L225 Difference]: With dead ends: 3315 [2021-07-09 16:23:57,470 INFO L226 Difference]: Without dead ends: 2706 [2021-07-09 16:23:57,471 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 272.3ms TimeCoverageRelationStatistics Valid=333, Invalid=789, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 16:23:57,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-07-09 16:23:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1634. [2021-07-09 16:23:57,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 2.7348438456827924) internal successors, (4466), 1633 states have internal predecessors, (4466), 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) [2021-07-09 16:23:57,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 4466 transitions. [2021-07-09 16:23:57,533 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 4466 transitions. Word has length 75 [2021-07-09 16:23:57,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:57,533 INFO L482 AbstractCegarLoop]: Abstraction has 1634 states and 4466 transitions. [2021-07-09 16:23:57,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 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) [2021-07-09 16:23:57,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 4466 transitions. [2021-07-09 16:23:57,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-07-09 16:23:57,535 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:57,536 INFO L508 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:57,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-07-09 16:23:57,749 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:57,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:57,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1121801400, now seen corresponding path program 7 times [2021-07-09 16:23:57,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:57,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929662684] [2021-07-09 16:23:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:57,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:57,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929662684] [2021-07-09 16:23:57,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929662684] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:57,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064927752] [2021-07-09 16:23:57,849 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 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 [2021-07-09 16:23:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:57,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-09 16:23:57,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:23:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:58,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064927752] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:58,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 16:23:58,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-07-09 16:23:58,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830460519] [2021-07-09 16:23:58,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 16:23:58,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:58,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 16:23:58,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-07-09 16:23:58,032 INFO L87 Difference]: Start difference. First operand 1634 states and 4466 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 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) [2021-07-09 16:23:58,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:58,476 INFO L93 Difference]: Finished difference Result 3118 states and 8453 transitions. [2021-07-09 16:23:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-09 16:23:58,476 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-07-09 16:23:58,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:58,481 INFO L225 Difference]: With dead ends: 3118 [2021-07-09 16:23:58,481 INFO L226 Difference]: Without dead ends: 2731 [2021-07-09 16:23:58,481 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 367.9ms TimeCoverageRelationStatistics Valid=416, Invalid=1066, Unknown=0, NotChecked=0, Total=1482 [2021-07-09 16:23:58,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2021-07-09 16:23:58,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2433. [2021-07-09 16:23:58,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 2432 states have (on average 2.8055098684210527) internal successors, (6823), 2432 states have internal predecessors, (6823), 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) [2021-07-09 16:23:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 6823 transitions. [2021-07-09 16:23:58,516 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 6823 transitions. Word has length 80 [2021-07-09 16:23:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:58,516 INFO L482 AbstractCegarLoop]: Abstraction has 2433 states and 6823 transitions. [2021-07-09 16:23:58,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 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) [2021-07-09 16:23:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 6823 transitions. [2021-07-09 16:23:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:23:58,519 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:58,519 INFO L508 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:58,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-07-09 16:23:58,735 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:58,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:58,735 INFO L82 PathProgramCache]: Analyzing trace with hash 681848981, now seen corresponding path program 8 times [2021-07-09 16:23:58,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:58,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546366751] [2021-07-09 16:23:58,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 77 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:58,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:58,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546366751] [2021-07-09 16:23:58,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546366751] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:58,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205874179] [2021-07-09 16:23:58,806 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 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 [2021-07-09 16:23:58,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 16:23:58,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:23:58,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-09 16:23:58,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:23:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:58,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205874179] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:23:58,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-09 16:23:58,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2021-07-09 16:23:58,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075721922] [2021-07-09 16:23:58,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-09 16:23:58,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:58,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-09 16:23:58,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:23:58,972 INFO L87 Difference]: Start difference. First operand 2433 states and 6823 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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) [2021-07-09 16:23:59,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:59,089 INFO L93 Difference]: Finished difference Result 5511 states and 15178 transitions. [2021-07-09 16:23:59,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-09 16:23:59,090 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-07-09 16:23:59,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:59,092 INFO L225 Difference]: With dead ends: 5511 [2021-07-09 16:23:59,092 INFO L226 Difference]: Without dead ends: 1279 [2021-07-09 16:23:59,092 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 116.8ms TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2021-07-09 16:23:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-07-09 16:23:59,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1279. [2021-07-09 16:23:59,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1278 states have (on average 2.5610328638497655) internal successors, (3273), 1278 states have internal predecessors, (3273), 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) [2021-07-09 16:23:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 3273 transitions. [2021-07-09 16:23:59,108 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 3273 transitions. Word has length 85 [2021-07-09 16:23:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:59,108 INFO L482 AbstractCegarLoop]: Abstraction has 1279 states and 3273 transitions. [2021-07-09 16:23:59,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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) [2021-07-09 16:23:59,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 3273 transitions. [2021-07-09 16:23:59,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:23:59,110 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:23:59,110 INFO L508 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:23:59,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:23:59,325 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:23:59,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:23:59,326 INFO L82 PathProgramCache]: Analyzing trace with hash 269514420, now seen corresponding path program 9 times [2021-07-09 16:23:59,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:23:59,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011951637] [2021-07-09 16:23:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:23:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:23:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 81 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:59,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:23:59,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011951637] [2021-07-09 16:23:59,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011951637] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 16:23:59,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142389042] [2021-07-09 16:23:59,413 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 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 [2021-07-09 16:23:59,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-07-09 16:23:59,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 16:23:59,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-09 16:23:59,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 16:23:59,581 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:23:59,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142389042] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:23:59,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-09 16:23:59,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2021-07-09 16:23:59,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735219166] [2021-07-09 16:23:59,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-09 16:23:59,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:23:59,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-09 16:23:59,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:23:59,583 INFO L87 Difference]: Start difference. First operand 1279 states and 3273 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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) [2021-07-09 16:23:59,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:23:59,684 INFO L93 Difference]: Finished difference Result 2288 states and 5575 transitions. [2021-07-09 16:23:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-09 16:23:59,684 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-07-09 16:23:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:23:59,684 INFO L225 Difference]: With dead ends: 2288 [2021-07-09 16:23:59,684 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 16:23:59,685 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 127.6ms TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2021-07-09 16:23:59,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 16:23:59,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 16:23:59,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-07-09 16:23:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 16:23:59,685 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2021-07-09 16:23:59,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:23:59,685 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 16:23:59,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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) [2021-07-09 16:23:59,685 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 16:23:59,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 16:23:59,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 16:23:59,905 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 16:23:59,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 04:23:59 BasicIcfg [2021-07-09 16:23:59,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 16:23:59,907 INFO L168 Benchmark]: Toolchain (without parser) took 11199.18 ms. Allocated memory was 178.3 MB in the beginning and 325.1 MB in the end (delta: 146.8 MB). Free memory was 140.5 MB in the beginning and 206.6 MB in the end (delta: -66.1 MB). Peak memory consumption was 81.9 MB. Max. memory is 8.0 GB. [2021-07-09 16:23:59,908 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 178.3 MB. Free memory is still 158.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:23:59,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.15 ms. Allocated memory is still 178.3 MB. Free memory was 140.3 MB in the beginning and 150.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2021-07-09 16:23:59,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.89 ms. Allocated memory is still 178.3 MB. Free memory was 150.3 MB in the beginning and 148.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:23:59,908 INFO L168 Benchmark]: Boogie Preprocessor took 29.46 ms. Allocated memory is still 178.3 MB. Free memory was 148.8 MB in the beginning and 147.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:23:59,908 INFO L168 Benchmark]: RCFGBuilder took 364.04 ms. Allocated memory is still 178.3 MB. Free memory was 147.2 MB in the beginning and 125.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:23:59,908 INFO L168 Benchmark]: TraceAbstraction took 10401.23 ms. Allocated memory was 178.3 MB in the beginning and 325.1 MB in the end (delta: 146.8 MB). Free memory was 125.2 MB in the beginning and 206.6 MB in the end (delta: -81.4 MB). Peak memory consumption was 67.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:23:59,908 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 178.3 MB. Free memory is still 158.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 357.15 ms. Allocated memory is still 178.3 MB. Free memory was 140.3 MB in the beginning and 150.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.89 ms. Allocated memory is still 178.3 MB. Free memory was 150.3 MB in the beginning and 148.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.46 ms. Allocated memory is still 178.3 MB. Free memory was 148.8 MB in the beginning and 147.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 364.04 ms. Allocated memory is still 178.3 MB. Free memory was 147.2 MB in the beginning and 125.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10401.23 ms. Allocated memory was 178.3 MB in the beginning and 325.1 MB in the end (delta: 146.8 MB). Free memory was 125.2 MB in the beginning and 206.6 MB in the end (delta: -81.4 MB). Peak memory consumption was 67.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10311.6ms, OverallIterations: 16, TraceHistogramMax: 6, EmptinessCheckTime: 48.8ms, AutomataDifference: 3680.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 55.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1781 SDtfs, 5409 SDslu, 8289 SDs, 0 SdLazy, 1413 SolverSat, 469 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 751.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1099 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 2845.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2486occurred in iteration=12, InterpolantAutomatonStates: 298, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 537.7ms AutomataMinimizationTime, 16 MinimizatonAttempts, 4702 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 148.6ms SsaConstructionTime, 357.1ms SatisfiabilityAnalysisTime, 2503.7ms InterpolantComputationTime, 1644 NumberOfCodeBlocks, 1644 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1617 ConstructedInterpolants, 0 QuantifiedInterpolants, 4655 SizeOfPredicates, 87 NumberOfNonLiveVariables, 1696 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 27 InterpolantComputations, 7 PerfectInterpolantSequences, 354/952 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...