/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:26:13,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:26:13,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:26:13,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:26:13,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:26:13,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:26:13,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:26:13,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:26:13,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:26:13,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:26:13,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:26:13,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:26:13,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:26:13,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:26:13,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:26:13,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:26:13,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:26:13,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:26:13,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:26:13,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:26:13,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:26:13,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:26:13,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:26:13,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:26:13,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 11:26:13,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 11:26:13,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 11:26:13,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 11:26:13,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 11:26:13,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 11:26:13,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 11:26:13,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 11:26:13,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 11:26:13,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:26:13,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:26:13,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:26:13,565 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-SemanticLbe.epf [2021-03-11 11:26:13,590 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:26:13,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:26:13,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:26:13,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:26:13,593 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:26:13,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:26:13,594 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:26:13,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:26:13,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:26:13,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:26:13,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:26:13,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:26:13,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:26:13,595 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:26:13,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:26:13,595 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:26:13,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:26:13,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:26:13,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:26:13,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:26:13,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:26:13,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:26:13,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:26:13,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:26:13,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:26:13,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:26:13,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:26:13,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:26:13,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:26:13,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:26:13,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:26:13,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:26:13,848 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:26:13,848 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:26:13,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i [2021-03-11 11:26:13,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038bb877f/26cc8284394a40d2bd7908207e54b59c/FLAG50be040a6 [2021-03-11 11:26:14,331 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:26:14,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i [2021-03-11 11:26:14,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038bb877f/26cc8284394a40d2bd7908207e54b59c/FLAG50be040a6 [2021-03-11 11:26:14,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038bb877f/26cc8284394a40d2bd7908207e54b59c [2021-03-11 11:26:14,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:26:14,368 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:26:14,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:26:14,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:26:14,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:26:14,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:26:14" (1/1) ... [2021-03-11 11:26:14,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bdf3041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14, skipping insertion in model container [2021-03-11 11:26:14,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:26:14" (1/1) ... [2021-03-11 11:26:14,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:26:14,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:26:14,568 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i[949,962] [2021-03-11 11:26:14,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:26:14,727 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:26:14,735 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i[949,962] [2021-03-11 11:26:14,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:26:14,809 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:26:14,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14 WrapperNode [2021-03-11 11:26:14,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:26:14,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:26:14,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:26:14,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:26:14,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14" (1/1) ... [2021-03-11 11:26:14,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14" (1/1) ... [2021-03-11 11:26:14,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:26:14,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:26:14,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:26:14,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:26:14,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14" (1/1) ... [2021-03-11 11:26:14,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14" (1/1) ... [2021-03-11 11:26:14,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14" (1/1) ... [2021-03-11 11:26:14,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14" (1/1) ... [2021-03-11 11:26:14,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14" (1/1) ... [2021-03-11 11:26:14,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14" (1/1) ... [2021-03-11 11:26:14,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14" (1/1) ... [2021-03-11 11:26:14,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:26:14,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:26:14,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:26:14,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:26:14,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14" (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 [2021-03-11 11:26:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:26:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:26:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:26:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:26:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:26:14,909 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:26:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:26:14,910 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:26:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 11:26:14,910 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 11:26:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-11 11:26:14,910 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-11 11:26:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:26:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:26:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:26:14,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:26:14,912 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:26:15,257 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:26:15,257 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 11:26:15,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:26:15 BoogieIcfgContainer [2021-03-11 11:26:15,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:26:15,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:26:15,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:26:15,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:26:15,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:26:14" (1/3) ... [2021-03-11 11:26:15,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356f1f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:26:15, skipping insertion in model container [2021-03-11 11:26:15,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:26:14" (2/3) ... [2021-03-11 11:26:15,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356f1f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:26:15, skipping insertion in model container [2021-03-11 11:26:15,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:26:15" (3/3) ... [2021-03-11 11:26:15,264 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt.i [2021-03-11 11:26:15,268 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:26:15,268 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:26:15,271 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:26:15,271 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:26:15,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,301 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,301 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,301 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,301 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,302 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,303 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,303 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,303 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,303 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,308 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,308 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,312 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,312 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,313 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,313 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,313 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,314 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,314 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,314 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,314 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,314 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,314 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,314 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,314 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,314 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,317 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,321 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,321 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,321 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,321 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,324 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,324 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,326 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,326 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:26:15,328 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:26:15,340 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 11:26:15,354 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:26:15,354 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:26:15,354 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:26:15,354 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:26:15,354 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:26:15,354 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:26:15,354 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:26:15,354 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:26:15,362 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:26:15,368 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 87 transitions, 194 flow [2021-03-11 11:26:15,370 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 87 transitions, 194 flow [2021-03-11 11:26:15,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2021-03-11 11:26:15,416 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-03-11 11:26:15,416 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:26:15,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-03-11 11:26:15,422 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2021-03-11 11:26:17,344 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2021-03-11 11:26:17,551 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2021-03-11 11:26:17,668 INFO L131 LiptonReduction]: Checked pairs total: 3371 [2021-03-11 11:26:17,668 INFO L133 LiptonReduction]: Total number of compositions: 71 [2021-03-11 11:26:17,673 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2021-03-11 11:26:17,703 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 850 states, 848 states have (on average 3.7004716981132075) internal successors, (3138), 849 states have internal predecessors, (3138), 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) [2021-03-11 11:26:17,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 850 states, 848 states have (on average 3.7004716981132075) internal successors, (3138), 849 states have internal predecessors, (3138), 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) [2021-03-11 11:26:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:26:17,711 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:17,712 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:17,712 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:17,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:17,715 INFO L82 PathProgramCache]: Analyzing trace with hash -721011704, now seen corresponding path program 1 times [2021-03-11 11:26:17,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:17,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596278494] [2021-03-11 11:26:17,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:17,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:17,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:26:17,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:17,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:26:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:17,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596278494] [2021-03-11 11:26:17,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:17,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:26:17,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956748533] [2021-03-11 11:26:17,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 11:26:17,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:17,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 11:26:17,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:26:17,858 INFO L87 Difference]: Start difference. First operand has 850 states, 848 states have (on average 3.7004716981132075) internal successors, (3138), 849 states have internal predecessors, (3138), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-03-11 11:26:17,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:17,882 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2021-03-11 11:26:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 11:26:17,883 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-03-11 11:26:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:17,896 INFO L225 Difference]: With dead ends: 850 [2021-03-11 11:26:17,896 INFO L226 Difference]: Without dead ends: 706 [2021-03-11 11:26:17,897 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:26:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-03-11 11:26:17,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2021-03-11 11:26:17,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 3.4638297872340424) internal successors, (2442), 705 states have internal predecessors, (2442), 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) [2021-03-11 11:26:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2021-03-11 11:26:17,972 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2021-03-11 11:26:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:17,972 INFO L480 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2021-03-11 11:26:17,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-03-11 11:26:17,972 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2021-03-11 11:26:17,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:26:17,974 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:17,974 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:17,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:26:17,974 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:17,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:17,975 INFO L82 PathProgramCache]: Analyzing trace with hash -876530926, now seen corresponding path program 1 times [2021-03-11 11:26:17,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:17,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701265416] [2021-03-11 11:26:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:18,069 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:26:18,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:26:18,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:18,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701265416] [2021-03-11 11:26:18,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:18,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:26:18,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668549443] [2021-03-11 11:26:18,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:26:18,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:18,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:26:18,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:26:18,086 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-03-11 11:26:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:18,116 INFO L93 Difference]: Finished difference Result 832 states and 2781 transitions. [2021-03-11 11:26:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:26:18,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-03-11 11:26:18,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:18,121 INFO L225 Difference]: With dead ends: 832 [2021-03-11 11:26:18,121 INFO L226 Difference]: Without dead ends: 688 [2021-03-11 11:26:18,121 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:26:18,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-03-11 11:26:18,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2021-03-11 11:26:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 687 states have (on average 3.441048034934498) internal successors, (2364), 687 states have internal predecessors, (2364), 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) [2021-03-11 11:26:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 2364 transitions. [2021-03-11 11:26:18,142 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 2364 transitions. Word has length 11 [2021-03-11 11:26:18,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:18,142 INFO L480 AbstractCegarLoop]: Abstraction has 688 states and 2364 transitions. [2021-03-11 11:26:18,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-03-11 11:26:18,142 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 2364 transitions. [2021-03-11 11:26:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:26:18,144 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:18,144 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:18,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:26:18,144 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:18,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:18,144 INFO L82 PathProgramCache]: Analyzing trace with hash 481995736, now seen corresponding path program 1 times [2021-03-11 11:26:18,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:18,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930622438] [2021-03-11 11:26:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:18,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,205 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:26:18,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:26:18,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:18,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930622438] [2021-03-11 11:26:18,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:18,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:26:18,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918232470] [2021-03-11 11:26:18,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:26:18,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:18,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:26:18,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:26:18,221 INFO L87 Difference]: Start difference. First operand 688 states and 2364 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-03-11 11:26:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:18,248 INFO L93 Difference]: Finished difference Result 742 states and 2472 transitions. [2021-03-11 11:26:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:26:18,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-03-11 11:26:18,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:18,251 INFO L225 Difference]: With dead ends: 742 [2021-03-11 11:26:18,252 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 11:26:18,252 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:26:18,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 11:26:18,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2021-03-11 11:26:18,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 3.3933649289099526) internal successors, (2148), 633 states have internal predecessors, (2148), 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) [2021-03-11 11:26:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2021-03-11 11:26:18,266 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 12 [2021-03-11 11:26:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:18,266 INFO L480 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2021-03-11 11:26:18,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-03-11 11:26:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2021-03-11 11:26:18,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:26:18,270 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:18,270 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:18,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:26:18,270 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:18,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:18,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1908761513, now seen corresponding path program 1 times [2021-03-11 11:26:18,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:18,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369701261] [2021-03-11 11:26:18,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:18,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,342 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:26:18,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:26:18,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:18,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369701261] [2021-03-11 11:26:18,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:18,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:26:18,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999043038] [2021-03-11 11:26:18,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:26:18,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:18,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:26:18,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:26:18,365 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-03-11 11:26:18,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:18,384 INFO L93 Difference]: Finished difference Result 688 states and 2256 transitions. [2021-03-11 11:26:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:26:18,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-03-11 11:26:18,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:18,387 INFO L225 Difference]: With dead ends: 688 [2021-03-11 11:26:18,387 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 11:26:18,387 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:26:18,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 11:26:18,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2021-03-11 11:26:18,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 3.3367875647668392) internal successors, (1932), 579 states have internal predecessors, (1932), 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) [2021-03-11 11:26:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1932 transitions. [2021-03-11 11:26:18,400 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1932 transitions. Word has length 12 [2021-03-11 11:26:18,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:18,400 INFO L480 AbstractCegarLoop]: Abstraction has 580 states and 1932 transitions. [2021-03-11 11:26:18,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-03-11 11:26:18,400 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1932 transitions. [2021-03-11 11:26:18,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:26:18,400 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:18,401 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:18,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:26:18,401 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:18,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:18,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1550859345, now seen corresponding path program 1 times [2021-03-11 11:26:18,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:18,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362521968] [2021-03-11 11:26:18,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:18,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,442 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:26:18,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:26:18,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:18,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362521968] [2021-03-11 11:26:18,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:18,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:26:18,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704980503] [2021-03-11 11:26:18,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:26:18,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:18,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:26:18,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:26:18,473 INFO L87 Difference]: Start difference. First operand 580 states and 1932 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-03-11 11:26:18,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:18,527 INFO L93 Difference]: Finished difference Result 767 states and 2533 transitions. [2021-03-11 11:26:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 11:26:18,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-03-11 11:26:18,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:18,530 INFO L225 Difference]: With dead ends: 767 [2021-03-11 11:26:18,530 INFO L226 Difference]: Without dead ends: 668 [2021-03-11 11:26:18,531 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-11 11:26:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-03-11 11:26:18,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 652. [2021-03-11 11:26:18,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 3.3502304147465436) internal successors, (2181), 651 states have internal predecessors, (2181), 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) [2021-03-11 11:26:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2181 transitions. [2021-03-11 11:26:18,544 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2181 transitions. Word has length 13 [2021-03-11 11:26:18,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:18,545 INFO L480 AbstractCegarLoop]: Abstraction has 652 states and 2181 transitions. [2021-03-11 11:26:18,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-03-11 11:26:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2181 transitions. [2021-03-11 11:26:18,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:26:18,546 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:18,546 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:18,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:26:18,546 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:18,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:18,546 INFO L82 PathProgramCache]: Analyzing trace with hash -92125211, now seen corresponding path program 2 times [2021-03-11 11:26:18,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:18,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813884687] [2021-03-11 11:26:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:18,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,595 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:26:18,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:26:18,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:18,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813884687] [2021-03-11 11:26:18,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:18,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:26:18,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104206165] [2021-03-11 11:26:18,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:26:18,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:18,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:26:18,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:26:18,607 INFO L87 Difference]: Start difference. First operand 652 states and 2181 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-03-11 11:26:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:18,642 INFO L93 Difference]: Finished difference Result 871 states and 2846 transitions. [2021-03-11 11:26:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:26:18,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-03-11 11:26:18,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:18,644 INFO L225 Difference]: With dead ends: 871 [2021-03-11 11:26:18,644 INFO L226 Difference]: Without dead ends: 430 [2021-03-11 11:26:18,645 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 23.9ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-11 11:26:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-03-11 11:26:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2021-03-11 11:26:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.132867132867133) internal successors, (1344), 429 states have internal predecessors, (1344), 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) [2021-03-11 11:26:18,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1344 transitions. [2021-03-11 11:26:18,653 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1344 transitions. Word has length 13 [2021-03-11 11:26:18,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:18,653 INFO L480 AbstractCegarLoop]: Abstraction has 430 states and 1344 transitions. [2021-03-11 11:26:18,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-03-11 11:26:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1344 transitions. [2021-03-11 11:26:18,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-11 11:26:18,654 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:18,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:18,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 11:26:18,656 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:18,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:18,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1691511224, now seen corresponding path program 1 times [2021-03-11 11:26:18,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:18,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447977393] [2021-03-11 11:26:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:18,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,694 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:26:18,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:26:18,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:18,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447977393] [2021-03-11 11:26:18,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:18,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:26:18,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748124074] [2021-03-11 11:26:18,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:26:18,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:18,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:26:18,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:26:18,704 INFO L87 Difference]: Start difference. First operand 430 states and 1344 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-03-11 11:26:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:18,734 INFO L93 Difference]: Finished difference Result 556 states and 1707 transitions. [2021-03-11 11:26:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:26:18,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-03-11 11:26:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:18,735 INFO L225 Difference]: With dead ends: 556 [2021-03-11 11:26:18,735 INFO L226 Difference]: Without dead ends: 262 [2021-03-11 11:26:18,735 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-11 11:26:18,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-03-11 11:26:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-03-11 11:26:18,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 2.954022988505747) internal successors, (771), 261 states have internal predecessors, (771), 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) [2021-03-11 11:26:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 771 transitions. [2021-03-11 11:26:18,740 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 771 transitions. Word has length 14 [2021-03-11 11:26:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:18,741 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 771 transitions. [2021-03-11 11:26:18,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-03-11 11:26:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 771 transitions. [2021-03-11 11:26:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-11 11:26:18,741 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:18,741 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:18,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 11:26:18,741 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:18,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:18,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1485550669, now seen corresponding path program 1 times [2021-03-11 11:26:18,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:18,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635488915] [2021-03-11 11:26:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:18,786 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:26:18,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:26:18,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:26:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:18,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635488915] [2021-03-11 11:26:18,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:18,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:26:18,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297120894] [2021-03-11 11:26:18,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:26:18,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:18,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:26:18,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:26:18,790 INFO L87 Difference]: Start difference. First operand 262 states and 771 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2021-03-11 11:26:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:18,797 INFO L93 Difference]: Finished difference Result 238 states and 659 transitions. [2021-03-11 11:26:18,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:26:18,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2021-03-11 11:26:18,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:18,798 INFO L225 Difference]: With dead ends: 238 [2021-03-11 11:26:18,799 INFO L226 Difference]: Without dead ends: 238 [2021-03-11 11:26:18,799 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:26:18,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-03-11 11:26:18,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2021-03-11 11:26:18,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.780590717299578) internal successors, (659), 237 states have internal predecessors, (659), 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) [2021-03-11 11:26:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 659 transitions. [2021-03-11 11:26:18,804 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 659 transitions. Word has length 15 [2021-03-11 11:26:18,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:18,804 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 659 transitions. [2021-03-11 11:26:18,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2021-03-11 11:26:18,804 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 659 transitions. [2021-03-11 11:26:18,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 11:26:18,804 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:18,804 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:18,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 11:26:18,805 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:18,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1207792814, now seen corresponding path program 1 times [2021-03-11 11:26:18,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:18,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343831351] [2021-03-11 11:26:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:18,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,834 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:26:18,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:26:18,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:26:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:18,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343831351] [2021-03-11 11:26:18,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:18,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:26:18,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000460233] [2021-03-11 11:26:18,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:26:18,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:18,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:26:18,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:26:18,838 INFO L87 Difference]: Start difference. First operand 238 states and 659 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-03-11 11:26:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:18,856 INFO L93 Difference]: Finished difference Result 182 states and 443 transitions. [2021-03-11 11:26:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 11:26:18,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-03-11 11:26:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:18,857 INFO L225 Difference]: With dead ends: 182 [2021-03-11 11:26:18,857 INFO L226 Difference]: Without dead ends: 182 [2021-03-11 11:26:18,858 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:26:18,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-03-11 11:26:18,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-03-11 11:26:18,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.447513812154696) internal successors, (443), 181 states have internal predecessors, (443), 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) [2021-03-11 11:26:18,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 443 transitions. [2021-03-11 11:26:18,861 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 443 transitions. Word has length 16 [2021-03-11 11:26:18,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:18,861 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 443 transitions. [2021-03-11 11:26:18,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-03-11 11:26:18,861 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 443 transitions. [2021-03-11 11:26:18,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-11 11:26:18,862 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:18,862 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:18,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 11:26:18,862 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:18,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:18,862 INFO L82 PathProgramCache]: Analyzing trace with hash 455853926, now seen corresponding path program 1 times [2021-03-11 11:26:18,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:18,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901701368] [2021-03-11 11:26:18,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:18,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,895 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:26:18,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:26:18,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:26:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:18,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901701368] [2021-03-11 11:26:18,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:18,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:26:18,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585033564] [2021-03-11 11:26:18,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:26:18,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:18,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:26:18,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:26:18,906 INFO L87 Difference]: Start difference. First operand 182 states and 443 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-03-11 11:26:18,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:18,923 INFO L93 Difference]: Finished difference Result 132 states and 295 transitions. [2021-03-11 11:26:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:26:18,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-03-11 11:26:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:18,924 INFO L225 Difference]: With dead ends: 132 [2021-03-11 11:26:18,924 INFO L226 Difference]: Without dead ends: 132 [2021-03-11 11:26:18,924 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:26:18,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-03-11 11:26:18,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-03-11 11:26:18,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.2519083969465647) internal successors, (295), 131 states have internal predecessors, (295), 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) [2021-03-11 11:26:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 295 transitions. [2021-03-11 11:26:18,926 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 295 transitions. Word has length 17 [2021-03-11 11:26:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:18,926 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 295 transitions. [2021-03-11 11:26:18,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-03-11 11:26:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 295 transitions. [2021-03-11 11:26:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 11:26:18,927 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:18,927 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:18,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 11:26:18,927 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:18,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:18,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1042060148, now seen corresponding path program 1 times [2021-03-11 11:26:18,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:18,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722683414] [2021-03-11 11:26:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:18,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:18,976 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:26:18,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:26:18,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:18,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:26:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:18,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722683414] [2021-03-11 11:26:18,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:18,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 11:26:18,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663936320] [2021-03-11 11:26:18,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:26:18,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:18,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:26:18,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:26:18,982 INFO L87 Difference]: Start difference. First operand 132 states and 295 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-03-11 11:26:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:19,001 INFO L93 Difference]: Finished difference Result 112 states and 255 transitions. [2021-03-11 11:26:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:26:19,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2021-03-11 11:26:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:19,003 INFO L225 Difference]: With dead ends: 112 [2021-03-11 11:26:19,003 INFO L226 Difference]: Without dead ends: 112 [2021-03-11 11:26:19,003 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:26:19,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-03-11 11:26:19,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-03-11 11:26:19,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.2972972972972974) internal successors, (255), 111 states have internal predecessors, (255), 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) [2021-03-11 11:26:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 255 transitions. [2021-03-11 11:26:19,005 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 255 transitions. Word has length 19 [2021-03-11 11:26:19,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:19,006 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 255 transitions. [2021-03-11 11:26:19,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-03-11 11:26:19,006 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 255 transitions. [2021-03-11 11:26:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-03-11 11:26:19,006 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:19,007 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:19,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 11:26:19,007 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:19,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:19,007 INFO L82 PathProgramCache]: Analyzing trace with hash -771974392, now seen corresponding path program 1 times [2021-03-11 11:26:19,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:19,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160785520] [2021-03-11 11:26:19,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:19,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:19,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:26:19,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:19,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:19,037 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:26:19,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:26:19,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:19,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:19,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160785520] [2021-03-11 11:26:19,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:19,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:26:19,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627851274] [2021-03-11 11:26:19,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:26:19,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:19,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:26:19,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:26:19,048 INFO L87 Difference]: Start difference. First operand 112 states and 255 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-03-11 11:26:19,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:19,074 INFO L93 Difference]: Finished difference Result 146 states and 329 transitions. [2021-03-11 11:26:19,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:26:19,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2021-03-11 11:26:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:19,075 INFO L225 Difference]: With dead ends: 146 [2021-03-11 11:26:19,075 INFO L226 Difference]: Without dead ends: 100 [2021-03-11 11:26:19,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:26:19,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-03-11 11:26:19,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 84. [2021-03-11 11:26:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.1325301204819276) internal successors, (177), 83 states have internal predecessors, (177), 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) [2021-03-11 11:26:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 177 transitions. [2021-03-11 11:26:19,077 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 177 transitions. Word has length 21 [2021-03-11 11:26:19,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:19,077 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 177 transitions. [2021-03-11 11:26:19,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-03-11 11:26:19,077 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 177 transitions. [2021-03-11 11:26:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-03-11 11:26:19,077 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:19,078 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:19,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 11:26:19,078 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:19,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1229954116, now seen corresponding path program 2 times [2021-03-11 11:26:19,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:19,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458932959] [2021-03-11 11:26:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:19,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:19,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:26:19,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:19,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:19,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:19,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:19,116 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:26:19,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:26:19,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:19,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:19,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458932959] [2021-03-11 11:26:19,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:19,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 11:26:19,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574166056] [2021-03-11 11:26:19,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:26:19,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:19,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:26:19,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:26:19,129 INFO L87 Difference]: Start difference. First operand 84 states and 177 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-03-11 11:26:19,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:19,155 INFO L93 Difference]: Finished difference Result 118 states and 251 transitions. [2021-03-11 11:26:19,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:26:19,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2021-03-11 11:26:19,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:19,156 INFO L225 Difference]: With dead ends: 118 [2021-03-11 11:26:19,156 INFO L226 Difference]: Without dead ends: 52 [2021-03-11 11:26:19,156 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.0ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-11 11:26:19,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-03-11 11:26:19,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-03-11 11:26:19,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.9215686274509804) internal successors, (98), 51 states have internal predecessors, (98), 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) [2021-03-11 11:26:19,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2021-03-11 11:26:19,157 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 21 [2021-03-11 11:26:19,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:19,157 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2021-03-11 11:26:19,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-03-11 11:26:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2021-03-11 11:26:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-03-11 11:26:19,158 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:26:19,158 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:26:19,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 11:26:19,158 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:26:19,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:26:19,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1554384922, now seen corresponding path program 3 times [2021-03-11 11:26:19,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:26:19,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12693376] [2021-03-11 11:26:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:26:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:26:19,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:19,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:26:19,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:19,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:19,187 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:26:19,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:26:19,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:26:19,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:26:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:26:19,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12693376] [2021-03-11 11:26:19,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:26:19,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:26:19,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342554683] [2021-03-11 11:26:19,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:26:19,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:26:19,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:26:19,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:26:19,197 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-03-11 11:26:19,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:26:19,218 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2021-03-11 11:26:19,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:26:19,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2021-03-11 11:26:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:26:19,218 INFO L225 Difference]: With dead ends: 51 [2021-03-11 11:26:19,218 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 11:26:19,219 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:26:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 11:26:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 11:26:19,219 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) [2021-03-11 11:26:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 11:26:19,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-03-11 11:26:19,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:26:19,219 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 11:26:19,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-03-11 11:26:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 11:26:19,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 11:26:19,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 11:26:19,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:26:19 BasicIcfg [2021-03-11 11:26:19,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:26:19,223 INFO L168 Benchmark]: Toolchain (without parser) took 4857.51 ms. Allocated memory was 356.5 MB in the beginning and 450.9 MB in the end (delta: 94.4 MB). Free memory was 320.1 MB in the beginning and 232.7 MB in the end (delta: 87.5 MB). Peak memory consumption was 184.5 MB. Max. memory is 16.0 GB. [2021-03-11 11:26:19,225 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 356.5 MB. Free memory was 338.3 MB in the beginning and 338.2 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:26:19,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.57 ms. Allocated memory is still 356.5 MB. Free memory was 319.5 MB in the beginning and 318.6 MB in the end (delta: 915.4 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. [2021-03-11 11:26:19,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.36 ms. Allocated memory is still 356.5 MB. Free memory was 318.6 MB in the beginning and 316.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:26:19,227 INFO L168 Benchmark]: Boogie Preprocessor took 13.81 ms. Allocated memory is still 356.5 MB. Free memory was 316.5 MB in the beginning and 315.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:26:19,229 INFO L168 Benchmark]: RCFGBuilder took 397.79 ms. Allocated memory is still 356.5 MB. Free memory was 315.4 MB in the beginning and 289.2 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 11:26:19,229 INFO L168 Benchmark]: TraceAbstraction took 3962.79 ms. Allocated memory was 356.5 MB in the beginning and 450.9 MB in the end (delta: 94.4 MB). Free memory was 289.2 MB in the beginning and 232.7 MB in the end (delta: 56.6 MB). Peak memory consumption was 154.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:26:19,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 356.5 MB. Free memory was 338.3 MB in the beginning and 338.2 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 439.57 ms. Allocated memory is still 356.5 MB. Free memory was 319.5 MB in the beginning and 318.6 MB in the end (delta: 915.4 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.36 ms. Allocated memory is still 356.5 MB. Free memory was 318.6 MB in the beginning and 316.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.81 ms. Allocated memory is still 356.5 MB. Free memory was 316.5 MB in the beginning and 315.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 397.79 ms. Allocated memory is still 356.5 MB. Free memory was 315.4 MB in the beginning and 289.2 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3962.79 ms. Allocated memory was 356.5 MB in the beginning and 450.9 MB in the end (delta: 94.4 MB). Free memory was 289.2 MB in the beginning and 232.7 MB in the end (delta: 56.6 MB). Peak memory consumption was 154.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2298.8ms, 98 PlacesBefore, 39 PlacesAfterwards, 87 TransitionsBefore, 27 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 3371 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2060, positive: 1979, positive conditional: 0, positive unconditional: 1979, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1314, positive: 1273, positive conditional: 0, positive unconditional: 1273, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1314, positive: 1258, positive conditional: 0, positive unconditional: 1258, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 199, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 139, negative conditional: 0, negative unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2060, positive: 706, positive conditional: 0, positive unconditional: 706, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 1314, unknown conditional: 0, unknown unconditional: 1314] , Statistics on independence cache: Total cache size (in pairs): 122, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3867.7ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 17.5ms, AutomataDifference: 417.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2349.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 330 SDtfs, 433 SDslu, 556 SDs, 0 SdLazy, 214 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 127.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 217.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 153.5ms AutomataMinimizationTime, 14 MinimizatonAttempts, 32 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.5ms SsaConstructionTime, 185.0ms SatisfiabilityAnalysisTime, 533.8ms InterpolantComputationTime, 215 NumberOfCodeBlocks, 215 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 1137 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...