/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-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 06:17:03,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 06:17:03,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 06:17:03,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 06:17:03,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 06:17:03,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 06:17:03,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 06:17:03,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 06:17:03,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 06:17:03,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 06:17:03,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 06:17:03,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 06:17:03,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 06:17:03,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 06:17:03,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 06:17:03,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 06:17:03,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 06:17:03,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 06:17:03,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 06:17:03,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 06:17:03,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 06:17:03,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 06:17:03,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 06:17:03,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 06:17:04,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 06:17:04,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 06:17:04,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 06:17:04,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 06:17:04,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 06:17:04,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 06:17:04,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 06:17:04,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 06:17:04,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 06:17:04,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 06:17:04,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 06:17:04,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 06:17:04,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 06:17:04,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 06:17:04,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 06:17:04,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 06:17:04,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 06:17:04,023 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 06:17:04,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 06:17:04,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 06:17:04,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 06:17:04,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 06:17:04,085 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 06:17:04,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 06:17:04,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 06:17:04,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 06:17:04,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 06:17:04,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 06:17:04,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 06:17:04,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 06:17:04,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 06:17:04,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 06:17:04,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 06:17:04,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 06:17:04,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 06:17:04,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 06:17:04,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 06:17:04,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 06:17:04,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 06:17:04,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 06:17:04,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 06:17:04,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 06:17:04,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 06:17:04,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 06:17:04,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 06:17:04,092 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 06:17:04,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 06:17:04,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 06:17:04,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 06:17:04,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 06:17:04,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 06:17:04,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 06:17:04,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 06:17:04,555 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 06:17:04,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-11-12 06:17:04,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3940eb52e/792c9d52fe694d74b772a41dbe1f5f3d/FLAGaceb1a81a [2020-11-12 06:17:05,449 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 06:17:05,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-11-12 06:17:05,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3940eb52e/792c9d52fe694d74b772a41dbe1f5f3d/FLAGaceb1a81a [2020-11-12 06:17:05,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3940eb52e/792c9d52fe694d74b772a41dbe1f5f3d [2020-11-12 06:17:05,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 06:17:05,728 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 06:17:05,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 06:17:05,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 06:17:05,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 06:17:05,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:17:05" (1/1) ... [2020-11-12 06:17:05,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fde0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:05, skipping insertion in model container [2020-11-12 06:17:05,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:17:05" (1/1) ... [2020-11-12 06:17:05,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 06:17:05,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 06:17:06,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:17:06,355 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 06:17:06,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:17:06,560 INFO L208 MainTranslator]: Completed translation [2020-11-12 06:17:06,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:06 WrapperNode [2020-11-12 06:17:06,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 06:17:06,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 06:17:06,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 06:17:06,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 06:17:06,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:06" (1/1) ... [2020-11-12 06:17:06,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:06" (1/1) ... [2020-11-12 06:17:06,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 06:17:06,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 06:17:06,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 06:17:06,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 06:17:06,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:06" (1/1) ... [2020-11-12 06:17:06,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:06" (1/1) ... [2020-11-12 06:17:06,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:06" (1/1) ... [2020-11-12 06:17:06,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:06" (1/1) ... [2020-11-12 06:17:06,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:06" (1/1) ... [2020-11-12 06:17:06,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:06" (1/1) ... [2020-11-12 06:17:06,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:06" (1/1) ... [2020-11-12 06:17:06,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 06:17:06,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 06:17:06,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 06:17:06,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 06:17:06,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:06" (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 06:17:06,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 06:17:06,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 06:17:06,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 06:17:06,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 06:17:06,759 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 06:17:06,760 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 06:17:06,761 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 06:17:06,761 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 06:17:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 06:17:06,762 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 06:17:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 06:17:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 06:17:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 06:17:06,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 06:17:06,764 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 06:17:07,321 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 06:17:07,322 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 06:17:07,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:17:07 BoogieIcfgContainer [2020-11-12 06:17:07,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 06:17:07,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 06:17:07,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 06:17:07,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 06:17:07,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:17:05" (1/3) ... [2020-11-12 06:17:07,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2153beb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:17:07, skipping insertion in model container [2020-11-12 06:17:07,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:06" (2/3) ... [2020-11-12 06:17:07,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2153beb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:17:07, skipping insertion in model container [2020-11-12 06:17:07,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:17:07" (3/3) ... [2020-11-12 06:17:07,333 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-11-12 06:17:07,350 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 06:17:07,350 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 06:17:07,354 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 06:17:07,355 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 06:17:07,395 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,396 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,396 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,398 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,399 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,399 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,399 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,399 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,399 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,400 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,400 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,400 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,400 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,401 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,401 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,402 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,402 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,402 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,402 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,402 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,402 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,403 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,407 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,407 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,407 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,414 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,414 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,415 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,415 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,419 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,419 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,419 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,420 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:07,426 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 06:17:07,439 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 06:17:07,463 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 06:17:07,464 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 06:17:07,464 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 06:17:07,464 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 06:17:07,464 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 06:17:07,464 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 06:17:07,464 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 06:17:07,465 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 06:17:07,477 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 06:17:08,287 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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 06:17:09,154 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 864ms [2020-11-12 06:17:09,188 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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 06:17:09,207 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 9847 states, 9154 states have (on average 1.4092200131090233) internal successors, (12900), 9846 states have internal predecessors, (12900), 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 06:17:09,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 9847 states, 9154 states have (on average 1.4092200131090233) internal successors, (12900), 9846 states have internal predecessors, (12900), 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 06:17:09,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 06:17:09,305 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:09,306 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 06:17:09,306 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:09,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1728151724, now seen corresponding path program 1 times [2020-11-12 06:17:09,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:09,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382477693] [2020-11-12 06:17:09,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:09,710 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 06:17:09,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382477693] [2020-11-12 06:17:09,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:09,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:17:09,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826410304] [2020-11-12 06:17:09,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:17:09,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:09,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:17:09,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:17:09,746 INFO L87 Difference]: Start difference. First operand has 9847 states, 9154 states have (on average 1.4092200131090233) internal successors, (12900), 9846 states have internal predecessors, (12900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 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 06:17:10,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:10,063 INFO L93 Difference]: Finished difference Result 12199 states and 15070 transitions. [2020-11-12 06:17:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:17:10,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 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 06:17:10,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:10,115 INFO L225 Difference]: With dead ends: 12199 [2020-11-12 06:17:10,115 INFO L226 Difference]: Without dead ends: 3974 [2020-11-12 06:17:10,117 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:17:10,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3974 states. [2020-11-12 06:17:10,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3974 to 3974. [2020-11-12 06:17:10,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3974 states, 3729 states have (on average 1.4824349691606329) internal successors, (5528), 3973 states have internal predecessors, (5528), 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 06:17:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 5528 transitions. [2020-11-12 06:17:10,363 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 5528 transitions. Word has length 41 [2020-11-12 06:17:10,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:10,364 INFO L481 AbstractCegarLoop]: Abstraction has 3974 states and 5528 transitions. [2020-11-12 06:17:10,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 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 06:17:10,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 5528 transitions. [2020-11-12 06:17:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-12 06:17:10,377 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:10,377 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, 1, 1] [2020-11-12 06:17:10,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 06:17:10,385 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:10,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:10,388 INFO L82 PathProgramCache]: Analyzing trace with hash 433003477, now seen corresponding path program 1 times [2020-11-12 06:17:10,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:10,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253574264] [2020-11-12 06:17:10,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:10,556 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 06:17:10,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253574264] [2020-11-12 06:17:10,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:10,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:17:10,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386859854] [2020-11-12 06:17:10,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:17:10,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:10,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:17:10,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:17:10,561 INFO L87 Difference]: Start difference. First operand 3974 states and 5528 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:17:10,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:10,758 INFO L93 Difference]: Finished difference Result 4394 states and 6583 transitions. [2020-11-12 06:17:10,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:17:10,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-11-12 06:17:10,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:10,774 INFO L225 Difference]: With dead ends: 4394 [2020-11-12 06:17:10,774 INFO L226 Difference]: Without dead ends: 2909 [2020-11-12 06:17:10,775 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:17:10,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2020-11-12 06:17:10,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 2909. [2020-11-12 06:17:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2909 states, 2734 states have (on average 1.501097293343087) internal successors, (4104), 2908 states have internal predecessors, (4104), 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 06:17:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 4104 transitions. [2020-11-12 06:17:10,894 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 4104 transitions. Word has length 43 [2020-11-12 06:17:10,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:10,895 INFO L481 AbstractCegarLoop]: Abstraction has 2909 states and 4104 transitions. [2020-11-12 06:17:10,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:17:10,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 4104 transitions. [2020-11-12 06:17:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-12 06:17:10,903 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:10,903 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, 1, 1, 1, 1] [2020-11-12 06:17:10,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 06:17:10,904 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:10,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:10,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1598134966, now seen corresponding path program 1 times [2020-11-12 06:17:10,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:10,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075573876] [2020-11-12 06:17:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:11,080 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 06:17:11,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075573876] [2020-11-12 06:17:11,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:11,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:17:11,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248903955] [2020-11-12 06:17:11,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:17:11,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:11,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:17:11,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:17:11,084 INFO L87 Difference]: Start difference. First operand 2909 states and 4104 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 06:17:11,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:11,274 INFO L93 Difference]: Finished difference Result 3329 states and 5018 transitions. [2020-11-12 06:17:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:17:11,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-11-12 06:17:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:11,287 INFO L225 Difference]: With dead ends: 3329 [2020-11-12 06:17:11,287 INFO L226 Difference]: Without dead ends: 2397 [2020-11-12 06:17:11,287 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:17:11,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2020-11-12 06:17:11,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2397. [2020-11-12 06:17:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 2257 states have (on average 1.4975631369073992) internal successors, (3380), 2396 states have internal predecessors, (3380), 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 06:17:11,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3380 transitions. [2020-11-12 06:17:11,349 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3380 transitions. Word has length 45 [2020-11-12 06:17:11,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:11,350 INFO L481 AbstractCegarLoop]: Abstraction has 2397 states and 3380 transitions. [2020-11-12 06:17:11,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 06:17:11,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3380 transitions. [2020-11-12 06:17:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 06:17:11,354 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:11,354 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, 1, 1, 1, 1, 1] [2020-11-12 06:17:11,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 06:17:11,355 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:11,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1125592896, now seen corresponding path program 1 times [2020-11-12 06:17:11,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:11,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036903500] [2020-11-12 06:17:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:11,478 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 06:17:11,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036903500] [2020-11-12 06:17:11,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:11,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:17:11,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55390210] [2020-11-12 06:17:11,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:17:11,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:11,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:17:11,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:17:11,481 INFO L87 Difference]: Start difference. First operand 2397 states and 3380 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 06:17:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:11,617 INFO L93 Difference]: Finished difference Result 3950 states and 5858 transitions. [2020-11-12 06:17:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 06:17:11,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2020-11-12 06:17:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:11,630 INFO L225 Difference]: With dead ends: 3950 [2020-11-12 06:17:11,630 INFO L226 Difference]: Without dead ends: 2356 [2020-11-12 06:17:11,631 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:17:11,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2020-11-12 06:17:11,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2356. [2020-11-12 06:17:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2216 states have (on average 1.4995487364620939) internal successors, (3323), 2355 states have internal predecessors, (3323), 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 06:17:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3323 transitions. [2020-11-12 06:17:11,692 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3323 transitions. Word has length 46 [2020-11-12 06:17:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:11,693 INFO L481 AbstractCegarLoop]: Abstraction has 2356 states and 3323 transitions. [2020-11-12 06:17:11,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 06:17:11,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3323 transitions. [2020-11-12 06:17:11,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 06:17:11,720 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:11,720 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, 1, 1, 1, 1, 1] [2020-11-12 06:17:11,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 06:17:11,721 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:11,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:11,721 INFO L82 PathProgramCache]: Analyzing trace with hash 47617986, now seen corresponding path program 2 times [2020-11-12 06:17:11,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:11,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919748615] [2020-11-12 06:17:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:11,846 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 06:17:11,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919748615] [2020-11-12 06:17:11,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:11,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:17:11,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848579674] [2020-11-12 06:17:11,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:17:11,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:11,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:17:11,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:17:11,850 INFO L87 Difference]: Start difference. First operand 2356 states and 3323 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 06:17:12,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:12,006 INFO L93 Difference]: Finished difference Result 3896 states and 5775 transitions. [2020-11-12 06:17:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 06:17:12,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2020-11-12 06:17:12,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:12,019 INFO L225 Difference]: With dead ends: 3896 [2020-11-12 06:17:12,019 INFO L226 Difference]: Without dead ends: 2315 [2020-11-12 06:17:12,020 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:17:12,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2020-11-12 06:17:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2315. [2020-11-12 06:17:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 2175 states have (on average 1.4997701149425287) internal successors, (3262), 2314 states have internal predecessors, (3262), 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 06:17:12,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 3262 transitions. [2020-11-12 06:17:12,090 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 3262 transitions. Word has length 46 [2020-11-12 06:17:12,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:12,091 INFO L481 AbstractCegarLoop]: Abstraction has 2315 states and 3262 transitions. [2020-11-12 06:17:12,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 06:17:12,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 3262 transitions. [2020-11-12 06:17:12,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 06:17:12,096 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:12,096 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, 1, 1, 1, 1, 1] [2020-11-12 06:17:12,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 06:17:12,096 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:12,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:12,097 INFO L82 PathProgramCache]: Analyzing trace with hash -29797218, now seen corresponding path program 3 times [2020-11-12 06:17:12,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:12,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151640489] [2020-11-12 06:17:12,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:12,223 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 06:17:12,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151640489] [2020-11-12 06:17:12,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:12,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:17:12,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905289717] [2020-11-12 06:17:12,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:17:12,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:12,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:17:12,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:17:12,226 INFO L87 Difference]: Start difference. First operand 2315 states and 3262 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 06:17:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:12,383 INFO L93 Difference]: Finished difference Result 2811 states and 4224 transitions. [2020-11-12 06:17:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:17:12,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2020-11-12 06:17:12,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:12,396 INFO L225 Difference]: With dead ends: 2811 [2020-11-12 06:17:12,396 INFO L226 Difference]: Without dead ends: 2203 [2020-11-12 06:17:12,397 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:17:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2020-11-12 06:17:12,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2203. [2020-11-12 06:17:12,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2071 states have (on average 1.5007242877836793) internal successors, (3108), 2202 states have internal predecessors, (3108), 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 06:17:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3108 transitions. [2020-11-12 06:17:12,467 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3108 transitions. Word has length 46 [2020-11-12 06:17:12,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:12,467 INFO L481 AbstractCegarLoop]: Abstraction has 2203 states and 3108 transitions. [2020-11-12 06:17:12,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 06:17:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3108 transitions. [2020-11-12 06:17:12,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 06:17:12,472 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:12,472 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, 1, 1, 1, 1, 1, 1] [2020-11-12 06:17:12,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 06:17:12,473 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:12,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:12,473 INFO L82 PathProgramCache]: Analyzing trace with hash 403493214, now seen corresponding path program 1 times [2020-11-12 06:17:12,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:12,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561408758] [2020-11-12 06:17:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:12,578 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 06:17:12,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561408758] [2020-11-12 06:17:12,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:12,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:17:12,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431131015] [2020-11-12 06:17:12,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:17:12,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:12,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:17:12,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:17:12,581 INFO L87 Difference]: Start difference. First operand 2203 states and 3108 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 06:17:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:12,741 INFO L93 Difference]: Finished difference Result 3915 states and 5940 transitions. [2020-11-12 06:17:12,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:17:12,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 47 [2020-11-12 06:17:12,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:12,755 INFO L225 Difference]: With dead ends: 3915 [2020-11-12 06:17:12,755 INFO L226 Difference]: Without dead ends: 2336 [2020-11-12 06:17:12,756 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:17:12,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2020-11-12 06:17:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1696. [2020-11-12 06:17:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1596 states have (on average 1.505012531328321) internal successors, (2402), 1695 states have internal predecessors, (2402), 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 06:17:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2402 transitions. [2020-11-12 06:17:12,823 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2402 transitions. Word has length 47 [2020-11-12 06:17:12,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:12,823 INFO L481 AbstractCegarLoop]: Abstraction has 1696 states and 2402 transitions. [2020-11-12 06:17:12,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 06:17:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2402 transitions. [2020-11-12 06:17:12,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 06:17:12,829 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:12,829 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:17:12,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 06:17:12,829 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:12,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:12,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1337066365, now seen corresponding path program 1 times [2020-11-12 06:17:12,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:12,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785855088] [2020-11-12 06:17:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:13,025 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 06:17:13,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785855088] [2020-11-12 06:17:13,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:13,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:17:13,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841833504] [2020-11-12 06:17:13,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:17:13,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:13,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:17:13,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:17:13,033 INFO L87 Difference]: Start difference. First operand 1696 states and 2402 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 06:17:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:13,188 INFO L93 Difference]: Finished difference Result 2044 states and 2817 transitions. [2020-11-12 06:17:13,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:17:13,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 48 [2020-11-12 06:17:13,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:13,197 INFO L225 Difference]: With dead ends: 2044 [2020-11-12 06:17:13,197 INFO L226 Difference]: Without dead ends: 1640 [2020-11-12 06:17:13,198 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:17:13,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2020-11-12 06:17:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2020-11-12 06:17:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1544 states have (on average 1.4987046632124352) internal successors, (2314), 1639 states have internal predecessors, (2314), 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 06:17:13,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2314 transitions. [2020-11-12 06:17:13,242 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2314 transitions. Word has length 48 [2020-11-12 06:17:13,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:13,242 INFO L481 AbstractCegarLoop]: Abstraction has 1640 states and 2314 transitions. [2020-11-12 06:17:13,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 06:17:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2314 transitions. [2020-11-12 06:17:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 06:17:13,246 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:13,246 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:17:13,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 06:17:13,247 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:13,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:13,247 INFO L82 PathProgramCache]: Analyzing trace with hash 878766874, now seen corresponding path program 1 times [2020-11-12 06:17:13,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:13,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670033098] [2020-11-12 06:17:13,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:13,365 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 06:17:13,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670033098] [2020-11-12 06:17:13,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:13,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:17:13,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847193808] [2020-11-12 06:17:13,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:17:13,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:13,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:17:13,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:17:13,368 INFO L87 Difference]: Start difference. First operand 1640 states and 2314 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:17:13,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:13,525 INFO L93 Difference]: Finished difference Result 1712 states and 2327 transitions. [2020-11-12 06:17:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 06:17:13,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2020-11-12 06:17:13,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:13,532 INFO L225 Difference]: With dead ends: 1712 [2020-11-12 06:17:13,532 INFO L226 Difference]: Without dead ends: 1262 [2020-11-12 06:17:13,533 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 06:17:13,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2020-11-12 06:17:13,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1262. [2020-11-12 06:17:13,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1190 states have (on average 1.4756302521008404) internal successors, (1756), 1261 states have internal predecessors, (1756), 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 06:17:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1756 transitions. [2020-11-12 06:17:13,569 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1756 transitions. Word has length 49 [2020-11-12 06:17:13,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:13,571 INFO L481 AbstractCegarLoop]: Abstraction has 1262 states and 1756 transitions. [2020-11-12 06:17:13,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:17:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1756 transitions. [2020-11-12 06:17:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 06:17:13,575 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:13,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:17:13,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 06:17:13,575 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:13,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:13,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1952940243, now seen corresponding path program 1 times [2020-11-12 06:17:13,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:13,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137262670] [2020-11-12 06:17:13,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:13,762 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 06:17:13,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137262670] [2020-11-12 06:17:13,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:13,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 06:17:13,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850147335] [2020-11-12 06:17:13,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 06:17:13,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:13,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 06:17:13,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 06:17:13,765 INFO L87 Difference]: Start difference. First operand 1262 states and 1756 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 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 06:17:13,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:13,970 INFO L93 Difference]: Finished difference Result 965 states and 1276 transitions. [2020-11-12 06:17:13,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 06:17:13,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 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 51 [2020-11-12 06:17:13,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:13,974 INFO L225 Difference]: With dead ends: 965 [2020-11-12 06:17:13,974 INFO L226 Difference]: Without dead ends: 481 [2020-11-12 06:17:13,974 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 06:17:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-11-12 06:17:13,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2020-11-12 06:17:13,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 454 states have (on average 1.447136563876652) internal successors, (657), 480 states have internal predecessors, (657), 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 06:17:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 657 transitions. [2020-11-12 06:17:13,987 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 657 transitions. Word has length 51 [2020-11-12 06:17:13,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:13,987 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 657 transitions. [2020-11-12 06:17:13,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 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 06:17:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 657 transitions. [2020-11-12 06:17:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 06:17:13,989 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:13,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:17:13,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-12 06:17:13,989 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:13,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:13,990 INFO L82 PathProgramCache]: Analyzing trace with hash -301500556, now seen corresponding path program 1 times [2020-11-12 06:17:13,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:13,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581991762] [2020-11-12 06:17:13,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:14,095 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 06:17:14,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581991762] [2020-11-12 06:17:14,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:14,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:17:14,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418802270] [2020-11-12 06:17:14,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:17:14,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:14,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:17:14,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:17:14,098 INFO L87 Difference]: Start difference. First operand 481 states and 657 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 06:17:14,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:14,195 INFO L93 Difference]: Finished difference Result 373 states and 549 transitions. [2020-11-12 06:17:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 06:17:14,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2020-11-12 06:17:14,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:14,196 INFO L225 Difference]: With dead ends: 373 [2020-11-12 06:17:14,196 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 06:17:14,196 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:17:14,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 06:17:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 06:17:14,197 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 06:17:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 06:17:14,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-12 06:17:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:14,197 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 06:17:14,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 06:17:14,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 06:17:14,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 06:17:14,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-12 06:17:14,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:17:14 BasicIcfg [2020-11-12 06:17:14,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 06:17:14,206 INFO L168 Benchmark]: Toolchain (without parser) took 8481.95 ms. Allocated memory was 302.0 MB in the beginning and 587.2 MB in the end (delta: 285.2 MB). Free memory was 277.0 MB in the beginning and 378.8 MB in the end (delta: -101.8 MB). Peak memory consumption was 186.2 MB. Max. memory is 16.0 GB. [2020-11-12 06:17:14,206 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 06:17:14,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 831.53 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 245.6 MB in the end (delta: 30.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-12 06:17:14,208 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.09 ms. Allocated memory is still 302.0 MB. Free memory was 245.6 MB in the beginning and 243.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:17:14,208 INFO L168 Benchmark]: Boogie Preprocessor took 36.46 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 285.0 MB in the end (delta: -41.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.0 GB. [2020-11-12 06:17:14,209 INFO L168 Benchmark]: RCFGBuilder took 671.84 ms. Allocated memory is still 302.0 MB. Free memory was 285.0 MB in the beginning and 261.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:17:14,210 INFO L168 Benchmark]: TraceAbstraction took 6877.42 ms. Allocated memory was 302.0 MB in the beginning and 587.2 MB in the end (delta: 285.2 MB). Free memory was 261.8 MB in the beginning and 378.8 MB in the end (delta: -117.0 MB). Peak memory consumption was 169.3 MB. Max. memory is 16.0 GB. [2020-11-12 06:17:14,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 831.53 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 245.6 MB in the end (delta: 30.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.09 ms. Allocated memory is still 302.0 MB. Free memory was 245.6 MB in the beginning and 243.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 36.46 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 285.0 MB in the end (delta: -41.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.0 GB. * RCFGBuilder took 671.84 ms. Allocated memory is still 302.0 MB. Free memory was 285.0 MB in the beginning and 261.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6877.42 ms. Allocated memory was 302.0 MB in the beginning and 587.2 MB in the end (delta: 285.2 MB). Free memory was 261.8 MB in the beginning and 378.8 MB in the end (delta: -117.0 MB). Peak memory consumption was 169.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 835 SDtfs, 906 SDslu, 2953 SDs, 0 SdLazy, 343 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9847occurred 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: 0.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 640 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 515 NumberOfCodeBlocks, 515 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 504 ConstructedInterpolants, 0 QuantifiedInterpolants, 60016 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...