/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -i ../../../trunk/examples/svcomp/pthread-ext/15_dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 04:02:22,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 04:02:22,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 04:02:23,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 04:02:23,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 04:02:23,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 04:02:23,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 04:02:23,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 04:02:23,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 04:02:23,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 04:02:23,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 04:02:23,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 04:02:23,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 04:02:23,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 04:02:23,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 04:02:23,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 04:02:23,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 04:02:23,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 04:02:23,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 04:02:23,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 04:02:23,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 04:02:23,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 04:02:23,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 04:02:23,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 04:02:23,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 04:02:23,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 04:02:23,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 04:02:23,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 04:02:23,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 04:02:23,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 04:02:23,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 04:02:23,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 04:02:23,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 04:02:23,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 04:02:23,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 04:02:23,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 04:02:23,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2020-11-12 04:02:23,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 04:02:23,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 04:02:23,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 04:02:23,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 04:02:23,211 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 04:02:23,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 04:02:23,212 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 04:02:23,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 04:02:23,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 04:02:23,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 04:02:23,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 04:02:23,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 04:02:23,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 04:02:23,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 04:02:23,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 04:02:23,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 04:02:23,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 04:02:23,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 04:02:23,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 04:02:23,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 04:02:23,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 04:02:23,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 04:02:23,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 04:02:23,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 04:02:23,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 04:02:23,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 04:02:23,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 04:02:23,218 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 04:02:23,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 04:02:23,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 04:02:23,218 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=DELAY_SET 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 04:02:23,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 04:02:23,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 04:02:23,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 04:02:23,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 04:02:23,744 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 04:02:23,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-11-12 04:02:23,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0c3bcef/f5c8b7095bb9454787ebf9ee25ec53a0/FLAG241b83027 [2020-11-12 04:02:24,622 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 04:02:24,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-11-12 04:02:24,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0c3bcef/f5c8b7095bb9454787ebf9ee25ec53a0/FLAG241b83027 [2020-11-12 04:02:24,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0c3bcef/f5c8b7095bb9454787ebf9ee25ec53a0 [2020-11-12 04:02:24,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 04:02:24,937 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 04:02:24,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 04:02:24,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 04:02:24,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 04:02:24,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:02:24" (1/1) ... [2020-11-12 04:02:24,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2344d177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:24, skipping insertion in model container [2020-11-12 04:02:24,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:02:24" (1/1) ... [2020-11-12 04:02:24,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 04:02:25,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 04:02:25,214 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-12 04:02:25,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 04:02:25,525 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 04:02:25,544 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-12 04:02:25,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 04:02:25,758 INFO L208 MainTranslator]: Completed translation [2020-11-12 04:02:25,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:25 WrapperNode [2020-11-12 04:02:25,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 04:02:25,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 04:02:25,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 04:02:25,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 04:02:25,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:25" (1/1) ... [2020-11-12 04:02:25,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:25" (1/1) ... [2020-11-12 04:02:25,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 04:02:25,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 04:02:25,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 04:02:25,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 04:02:25,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:25" (1/1) ... [2020-11-12 04:02:25,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:25" (1/1) ... [2020-11-12 04:02:25,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:25" (1/1) ... [2020-11-12 04:02:25,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:25" (1/1) ... [2020-11-12 04:02:25,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:25" (1/1) ... [2020-11-12 04:02:25,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:25" (1/1) ... [2020-11-12 04:02:25,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:25" (1/1) ... [2020-11-12 04:02:25,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 04:02:25,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 04:02:25,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 04:02:25,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 04:02:25,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:25" (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 [2020-11-12 04:02:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-12 04:02:26,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-12 04:02:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 04:02:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 04:02:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 04:02:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 04:02:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 04:02:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 04:02:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 04:02:26,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 04:02:26,020 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 04:02:26,584 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 04:02:26,584 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-12 04:02:26,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:02:26 BoogieIcfgContainer [2020-11-12 04:02:26,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 04:02:26,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 04:02:26,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 04:02:26,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 04:02:26,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:02:24" (1/3) ... [2020-11-12 04:02:26,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63922b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:02:26, skipping insertion in model container [2020-11-12 04:02:26,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:02:25" (2/3) ... [2020-11-12 04:02:26,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63922b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:02:26, skipping insertion in model container [2020-11-12 04:02:26,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:02:26" (3/3) ... [2020-11-12 04:02:26,597 INFO L111 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2020-11-12 04:02:26,617 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 04:02:26,618 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 04:02:26,622 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-12 04:02:26,623 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 04:02:26,655 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,655 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,656 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,656 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,656 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,657 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,657 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,657 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,657 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,658 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,658 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,658 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,662 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,663 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,663 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,663 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 04:02:26,680 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 04:02:26,696 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 04:02:26,722 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 04:02:26,722 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 04:02:26,723 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 04:02:26,723 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 04:02:26,723 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 04:02:26,723 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 04:02:26,723 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 04:02:26,724 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 04:02:26,737 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 85 transitions, 175 flow [2020-11-12 04:02:26,800 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 775 states, 771 states have (on average 2.425421530479896) internal successors, (1870), 774 states have internal predecessors, (1870), 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) [2020-11-12 04:02:27,191 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 384ms [2020-11-12 04:02:27,194 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 775 states, 771 states have (on average 2.425421530479896) internal successors, (1870), 774 states have internal predecessors, (1870), 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) [2020-11-12 04:02:27,196 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 775 states, 709 states have (on average 1.770098730606488) internal successors, (1255), 774 states have internal predecessors, (1255), 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) [2020-11-12 04:02:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 775 states, 709 states have (on average 1.770098730606488) internal successors, (1255), 774 states have internal predecessors, (1255), 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) [2020-11-12 04:02:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-12 04:02:27,208 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 04:02:27,209 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 04:02:27,210 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 04:02:27,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 04:02:27,217 INFO L82 PathProgramCache]: Analyzing trace with hash 2031516002, now seen corresponding path program 1 times [2020-11-12 04:02:27,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 04:02:27,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658146052] [2020-11-12 04:02:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 04:02:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 04:02:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 04:02:27,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658146052] [2020-11-12 04:02:27,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 04:02:27,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 04:02:27,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875222275] [2020-11-12 04:02:27,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-12 04:02:27,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 04:02:27,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-12 04:02:27,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-12 04:02:27,540 INFO L87 Difference]: Start difference. First operand has 775 states, 709 states have (on average 1.770098730606488) internal successors, (1255), 774 states have internal predecessors, (1255), 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 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2020-11-12 04:02:27,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 04:02:27,572 INFO L93 Difference]: Finished difference Result 667 states and 968 transitions. [2020-11-12 04:02:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-12 04:02:27,574 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2020-11-12 04:02:27,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 04:02:27,595 INFO L225 Difference]: With dead ends: 667 [2020-11-12 04:02:27,596 INFO L226 Difference]: Without dead ends: 556 [2020-11-12 04:02:27,597 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-12 04:02:27,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-11-12 04:02:27,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2020-11-12 04:02:27,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 524 states have (on average 1.5935114503816794) internal successors, (835), 555 states have internal predecessors, (835), 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) [2020-11-12 04:02:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 835 transitions. [2020-11-12 04:02:27,689 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 835 transitions. Word has length 25 [2020-11-12 04:02:27,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 04:02:27,689 INFO L481 AbstractCegarLoop]: Abstraction has 556 states and 835 transitions. [2020-11-12 04:02:27,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2020-11-12 04:02:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 835 transitions. [2020-11-12 04:02:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-12 04:02:27,692 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 04:02:27,692 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 04:02:27,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 04:02:27,693 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 04:02:27,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 04:02:27,694 INFO L82 PathProgramCache]: Analyzing trace with hash 2060145153, now seen corresponding path program 1 times [2020-11-12 04:02:27,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 04:02:27,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309977213] [2020-11-12 04:02:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 04:02:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 04:02:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 04:02:27,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309977213] [2020-11-12 04:02:27,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 04:02:27,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 04:02:27,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914267258] [2020-11-12 04:02:27,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 04:02:27,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 04:02:27,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 04:02:27,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 04:02:27,840 INFO L87 Difference]: Start difference. First operand 556 states and 835 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2020-11-12 04:02:27,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 04:02:27,876 INFO L93 Difference]: Finished difference Result 529 states and 813 transitions. [2020-11-12 04:02:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 04:02:27,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2020-11-12 04:02:27,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 04:02:27,880 INFO L225 Difference]: With dead ends: 529 [2020-11-12 04:02:27,880 INFO L226 Difference]: Without dead ends: 340 [2020-11-12 04:02:27,881 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 04:02:27,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-11-12 04:02:27,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 323. [2020-11-12 04:02:27,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 306 states have (on average 1.5457516339869282) internal successors, (473), 322 states have internal predecessors, (473), 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) [2020-11-12 04:02:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 473 transitions. [2020-11-12 04:02:27,901 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 473 transitions. Word has length 25 [2020-11-12 04:02:27,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 04:02:27,902 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 473 transitions. [2020-11-12 04:02:27,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2020-11-12 04:02:27,902 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 473 transitions. [2020-11-12 04:02:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-12 04:02:27,904 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 04:02:27,904 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 04:02:27,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 04:02:27,905 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 04:02:27,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 04:02:27,905 INFO L82 PathProgramCache]: Analyzing trace with hash -893206604, now seen corresponding path program 1 times [2020-11-12 04:02:27,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 04:02:27,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425802084] [2020-11-12 04:02:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 04:02:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 04:02:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 04:02:27,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425802084] [2020-11-12 04:02:27,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 04:02:27,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 04:02:27,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636911337] [2020-11-12 04:02:27,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 04:02:27,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 04:02:27,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 04:02:27,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 04:02:27,970 INFO L87 Difference]: Start difference. First operand 323 states and 473 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2020-11-12 04:02:28,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 04:02:28,002 INFO L93 Difference]: Finished difference Result 262 states and 374 transitions. [2020-11-12 04:02:28,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 04:02:28,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2020-11-12 04:02:28,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 04:02:28,005 INFO L225 Difference]: With dead ends: 262 [2020-11-12 04:02:28,005 INFO L226 Difference]: Without dead ends: 216 [2020-11-12 04:02:28,005 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 04:02:28,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-12 04:02:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-12 04:02:28,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 203 states have (on average 1.5123152709359606) internal successors, (307), 215 states have internal predecessors, (307), 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) [2020-11-12 04:02:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 307 transitions. [2020-11-12 04:02:28,016 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 307 transitions. Word has length 29 [2020-11-12 04:02:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 04:02:28,016 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 307 transitions. [2020-11-12 04:02:28,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2020-11-12 04:02:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 307 transitions. [2020-11-12 04:02:28,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-12 04:02:28,019 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 04:02:28,019 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 04:02:28,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 04:02:28,020 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 04:02:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 04:02:28,021 INFO L82 PathProgramCache]: Analyzing trace with hash 887676646, now seen corresponding path program 1 times [2020-11-12 04:02:28,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 04:02:28,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139789157] [2020-11-12 04:02:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 04:02:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 04:02:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 04:02:28,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139789157] [2020-11-12 04:02:28,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 04:02:28,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 04:02:28,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982421099] [2020-11-12 04:02:28,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 04:02:28,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 04:02:28,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 04:02:28,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 04:02:28,102 INFO L87 Difference]: Start difference. First operand 216 states and 307 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2020-11-12 04:02:28,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 04:02:28,148 INFO L93 Difference]: Finished difference Result 272 states and 404 transitions. [2020-11-12 04:02:28,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 04:02:28,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2020-11-12 04:02:28,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 04:02:28,150 INFO L225 Difference]: With dead ends: 272 [2020-11-12 04:02:28,151 INFO L226 Difference]: Without dead ends: 216 [2020-11-12 04:02:28,151 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 04:02:28,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-12 04:02:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-12 04:02:28,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 203 states have (on average 1.5024630541871922) internal successors, (305), 215 states have internal predecessors, (305), 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) [2020-11-12 04:02:28,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 305 transitions. [2020-11-12 04:02:28,160 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 305 transitions. Word has length 34 [2020-11-12 04:02:28,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 04:02:28,161 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 305 transitions. [2020-11-12 04:02:28,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2020-11-12 04:02:28,161 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 305 transitions. [2020-11-12 04:02:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-12 04:02:28,163 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 04:02:28,164 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 04:02:28,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 04:02:28,164 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 04:02:28,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 04:02:28,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1798861070, now seen corresponding path program 2 times [2020-11-12 04:02:28,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 04:02:28,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859065050] [2020-11-12 04:02:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 04:02:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 04:02:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 04:02:28,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859065050] [2020-11-12 04:02:28,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 04:02:28,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 04:02:28,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406073317] [2020-11-12 04:02:28,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 04:02:28,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 04:02:28,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 04:02:28,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 04:02:28,257 INFO L87 Difference]: Start difference. First operand 216 states and 305 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2020-11-12 04:02:28,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 04:02:28,299 INFO L93 Difference]: Finished difference Result 286 states and 418 transitions. [2020-11-12 04:02:28,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 04:02:28,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2020-11-12 04:02:28,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 04:02:28,301 INFO L225 Difference]: With dead ends: 286 [2020-11-12 04:02:28,302 INFO L226 Difference]: Without dead ends: 208 [2020-11-12 04:02:28,302 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 04:02:28,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-12 04:02:28,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2020-11-12 04:02:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 195 states have (on average 1.476923076923077) internal successors, (288), 207 states have internal predecessors, (288), 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) [2020-11-12 04:02:28,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 288 transitions. [2020-11-12 04:02:28,309 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 288 transitions. Word has length 34 [2020-11-12 04:02:28,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 04:02:28,310 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 288 transitions. [2020-11-12 04:02:28,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2020-11-12 04:02:28,310 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 288 transitions. [2020-11-12 04:02:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 04:02:28,312 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 04:02:28,312 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 04:02:28,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 04:02:28,312 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 04:02:28,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 04:02:28,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1121664061, now seen corresponding path program 1 times [2020-11-12 04:02:28,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 04:02:28,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619112764] [2020-11-12 04:02:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 04:02:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 04:02:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 04:02:28,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619112764] [2020-11-12 04:02:28,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 04:02:28,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 04:02:28,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560462808] [2020-11-12 04:02:28,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 04:02:28,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 04:02:28,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 04:02:28,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 04:02:28,412 INFO L87 Difference]: Start difference. First operand 208 states and 288 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2020-11-12 04:02:28,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 04:02:28,439 INFO L93 Difference]: Finished difference Result 142 states and 177 transitions. [2020-11-12 04:02:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 04:02:28,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2020-11-12 04:02:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 04:02:28,441 INFO L225 Difference]: With dead ends: 142 [2020-11-12 04:02:28,441 INFO L226 Difference]: Without dead ends: 138 [2020-11-12 04:02:28,441 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 04:02:28,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-12 04:02:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-11-12 04:02:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 125 states have (on average 1.384) internal successors, (173), 137 states have internal predecessors, (173), 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) [2020-11-12 04:02:28,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 173 transitions. [2020-11-12 04:02:28,446 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 173 transitions. Word has length 41 [2020-11-12 04:02:28,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 04:02:28,447 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 173 transitions. [2020-11-12 04:02:28,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2020-11-12 04:02:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 173 transitions. [2020-11-12 04:02:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 04:02:28,448 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 04:02:28,448 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 04:02:28,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 04:02:28,449 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 04:02:28,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 04:02:28,450 INFO L82 PathProgramCache]: Analyzing trace with hash -840532498, now seen corresponding path program 1 times [2020-11-12 04:02:28,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 04:02:28,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212720490] [2020-11-12 04:02:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 04:02:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 04:02:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 04:02:28,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212720490] [2020-11-12 04:02:28,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 04:02:28,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 04:02:28,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532914112] [2020-11-12 04:02:28,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 04:02:28,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 04:02:28,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 04:02:28,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 04:02:28,505 INFO L87 Difference]: Start difference. First operand 138 states and 173 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2020-11-12 04:02:28,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 04:02:28,522 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2020-11-12 04:02:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 04:02:28,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2020-11-12 04:02:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 04:02:28,523 INFO L225 Difference]: With dead ends: 26 [2020-11-12 04:02:28,523 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 04:02:28,524 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 04:02:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 04:02:28,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 04:02:28,524 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) [2020-11-12 04:02:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 04:02:28,525 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-11-12 04:02:28,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 04:02:28,525 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 04:02:28,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2020-11-12 04:02:28,526 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 04:02:28,526 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 04:02:28,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 04:02:28,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:02:28 BasicIcfg [2020-11-12 04:02:28,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 04:02:28,535 INFO L168 Benchmark]: Toolchain (without parser) took 3603.99 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 276.3 MB in the beginning and 307.3 MB in the end (delta: -31.0 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.0 GB. [2020-11-12 04:02:28,536 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 04:02:28,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.82 ms. Allocated memory is still 302.0 MB. Free memory was 275.6 MB in the beginning and 275.6 MB in the end (delta: 11.0 kB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2020-11-12 04:02:28,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.49 ms. Allocated memory is still 302.0 MB. Free memory was 275.6 MB in the beginning and 273.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 04:02:28,538 INFO L168 Benchmark]: Boogie Preprocessor took 61.21 ms. Allocated memory is still 302.0 MB. Free memory was 273.6 MB in the beginning and 272.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 04:02:28,539 INFO L168 Benchmark]: RCFGBuilder took 675.22 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 250.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-11-12 04:02:28,540 INFO L168 Benchmark]: TraceAbstraction took 1943.42 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 250.5 MB in the beginning and 307.3 MB in the end (delta: -56.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.0 GB. [2020-11-12 04:02:28,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 820.82 ms. Allocated memory is still 302.0 MB. Free memory was 275.6 MB in the beginning and 275.6 MB in the end (delta: 11.0 kB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 84.49 ms. Allocated memory is still 302.0 MB. Free memory was 275.6 MB in the beginning and 273.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 61.21 ms. Allocated memory is still 302.0 MB. Free memory was 273.6 MB in the beginning and 272.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 675.22 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 250.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1943.42 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 250.5 MB in the beginning and 307.3 MB in the end (delta: -56.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 72 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 548 SDtfs, 269 SDslu, 459 SDs, 0 SdLazy, 52 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=775occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 17 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 229 NumberOfCodeBlocks, 229 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 10784 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 2/2 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...