/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.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 06:16:59,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 06:16:59,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 06:16:59,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 06:16:59,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 06:16:59,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 06:16:59,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 06:16:59,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 06:16:59,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 06:16:59,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 06:16:59,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 06:16:59,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 06:16:59,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 06:16:59,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 06:16:59,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 06:16:59,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 06:16:59,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 06:16:59,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 06:16:59,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 06:16:59,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 06:16:59,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 06:16:59,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 06:16:59,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 06:16:59,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 06:16:59,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 06:16:59,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 06:16:59,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 06:16:59,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 06:16:59,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 06:16:59,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 06:16:59,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 06:16:59,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 06:16:59,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 06:16:59,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 06:16:59,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 06:16:59,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 06:16:59,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 06:16:59,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 06:16:59,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 06:16:59,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 06:16:59,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 06:16:59,879 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 06:16:59,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 06:16:59,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 06:16:59,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 06:16:59,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 06:16:59,910 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 06:16:59,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 06:16:59,911 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 06:16:59,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 06:16:59,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 06:16:59,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 06:16:59,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 06:16:59,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 06:16:59,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 06:16:59,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 06:16:59,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 06:16:59,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 06:16:59,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 06:16:59,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 06:16:59,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 06:16:59,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 06:16:59,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 06:16:59,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 06:16:59,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 06:16:59,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 06:16:59,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 06:16:59,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 06:16:59,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 06:16:59,917 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 06:16:59,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 06:16:59,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 06:16:59,918 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 06:17:00,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 06:17:00,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 06:17:00,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 06:17:00,381 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 06:17:00,381 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 06:17:00,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-11-12 06:17:00,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc22e6bd/b7cea207435e44d0ac0897c537b5a42f/FLAGe757167a5 [2020-11-12 06:17:01,277 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 06:17:01,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-11-12 06:17:01,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc22e6bd/b7cea207435e44d0ac0897c537b5a42f/FLAGe757167a5 [2020-11-12 06:17:01,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc22e6bd/b7cea207435e44d0ac0897c537b5a42f [2020-11-12 06:17:01,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 06:17:01,502 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 06:17:01,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 06:17:01,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 06:17:01,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 06:17:01,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:17:01" (1/1) ... [2020-11-12 06:17:01,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e1b2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:01, skipping insertion in model container [2020-11-12 06:17:01,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:17:01" (1/1) ... [2020-11-12 06:17:01,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 06:17:01,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 06:17:02,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:17:02,029 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 06:17:02,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:17:02,258 INFO L208 MainTranslator]: Completed translation [2020-11-12 06:17:02,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:02 WrapperNode [2020-11-12 06:17:02,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 06:17:02,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 06:17:02,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 06:17:02,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 06:17:02,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:02" (1/1) ... [2020-11-12 06:17:02,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:02" (1/1) ... [2020-11-12 06:17:02,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 06:17:02,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 06:17:02,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 06:17:02,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 06:17:02,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:02" (1/1) ... [2020-11-12 06:17:02,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:02" (1/1) ... [2020-11-12 06:17:02,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:02" (1/1) ... [2020-11-12 06:17:02,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:02" (1/1) ... [2020-11-12 06:17:02,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:02" (1/1) ... [2020-11-12 06:17:02,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:02" (1/1) ... [2020-11-12 06:17:02,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:02" (1/1) ... [2020-11-12 06:17:02,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 06:17:02,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 06:17:02,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 06:17:02,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 06:17:02,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:02" (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 06:17:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 06:17:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 06:17:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 06:17:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 06:17:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 06:17:02,467 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 06:17:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 06:17:02,468 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 06:17:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 06:17:02,469 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 06:17:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 06:17:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 06:17:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 06:17:02,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 06:17:02,472 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 06:17:02,939 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 06:17:02,939 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 06:17:02,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:17:02 BoogieIcfgContainer [2020-11-12 06:17:02,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 06:17:02,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 06:17:02,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 06:17:02,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 06:17:02,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:17:01" (1/3) ... [2020-11-12 06:17:02,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d09975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:17:02, skipping insertion in model container [2020-11-12 06:17:02,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:17:02" (2/3) ... [2020-11-12 06:17:02,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d09975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:17:02, skipping insertion in model container [2020-11-12 06:17:02,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:17:02" (3/3) ... [2020-11-12 06:17:02,955 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-11-12 06:17:02,972 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 06:17:02,973 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 06:17:02,977 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 06:17:02,978 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 06:17:03,019 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,020 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,020 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,020 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,020 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,021 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,021 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,021 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,021 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,022 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,022 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,022 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,024 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,024 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,025 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,025 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,026 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,026 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,026 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,026 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,030 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,030 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,032 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,032 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,032 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,032 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,033 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,033 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,034 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,034 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,047 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,047 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,057 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,057 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,057 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,061 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,062 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:17:03,065 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 06:17:03,080 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 06:17:03,121 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 06:17:03,122 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 06:17:03,122 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 06:17:03,122 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 06:17:03,122 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 06:17:03,122 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 06:17:03,123 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 06:17:03,123 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 06:17:03,141 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 06:17:04,172 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 06:17:04,814 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 637ms [2020-11-12 06:17:04,847 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 06:17:04,868 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 06:17:04,887 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 06:17:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 06:17:04,919 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:04,920 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 06:17:04,920 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:04,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1728151724, now seen corresponding path program 1 times [2020-11-12 06:17:04,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:04,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948213117] [2020-11-12 06:17:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:05,397 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 06:17:05,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948213117] [2020-11-12 06:17:05,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:05,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:17:05,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661566459] [2020-11-12 06:17:05,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:17:05,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:05,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:17:05,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:17:05,442 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 06:17:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:05,759 INFO L93 Difference]: Finished difference Result 12199 states and 15070 transitions. [2020-11-12 06:17:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:17:05,761 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 06:17:05,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:05,802 INFO L225 Difference]: With dead ends: 12199 [2020-11-12 06:17:05,803 INFO L226 Difference]: Without dead ends: 3889 [2020-11-12 06:17:05,805 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 06:17:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-11-12 06:17:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 3889. [2020-11-12 06:17:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3889 states, 3644 states have (on average 1.4923161361141604) internal successors, (5438), 3888 states have internal predecessors, (5438), 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 06:17:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3889 states to 3889 states and 5438 transitions. [2020-11-12 06:17:06,133 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 5438 transitions. Word has length 41 [2020-11-12 06:17:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:06,134 INFO L481 AbstractCegarLoop]: Abstraction has 3889 states and 5438 transitions. [2020-11-12 06:17:06,136 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 06:17:06,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 5438 transitions. [2020-11-12 06:17:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-12 06:17:06,147 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:06,148 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 06:17:06,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 06:17:06,156 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:06,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:06,158 INFO L82 PathProgramCache]: Analyzing trace with hash -160781645, now seen corresponding path program 1 times [2020-11-12 06:17:06,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:06,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931728125] [2020-11-12 06:17:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:06,345 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 06:17:06,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931728125] [2020-11-12 06:17:06,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:06,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:17:06,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450721155] [2020-11-12 06:17:06,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:17:06,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:06,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:17:06,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:17:06,350 INFO L87 Difference]: Start difference. First operand 3889 states and 5438 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 06:17:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:06,522 INFO L93 Difference]: Finished difference Result 4477 states and 6684 transitions. [2020-11-12 06:17:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:17:06,523 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 06:17:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:06,539 INFO L225 Difference]: With dead ends: 4477 [2020-11-12 06:17:06,540 INFO L226 Difference]: Without dead ends: 3181 [2020-11-12 06:17:06,541 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 06:17:06,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2020-11-12 06:17:06,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 3181. [2020-11-12 06:17:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3181 states, 2985 states have (on average 1.4907872696817421) internal successors, (4450), 3180 states have internal predecessors, (4450), 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 06:17:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 4450 transitions. [2020-11-12 06:17:06,625 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 4450 transitions. Word has length 43 [2020-11-12 06:17:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:06,626 INFO L481 AbstractCegarLoop]: Abstraction has 3181 states and 4450 transitions. [2020-11-12 06:17:06,626 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 06:17:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 4450 transitions. [2020-11-12 06:17:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 06:17:06,632 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:06,632 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] [2020-11-12 06:17:06,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 06:17:06,633 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash -285059491, now seen corresponding path program 1 times [2020-11-12 06:17:06,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:06,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574815969] [2020-11-12 06:17:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:06,893 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2020-11-12 06:17:06,954 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 06:17:06,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574815969] [2020-11-12 06:17:06,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:06,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:17:06,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760732254] [2020-11-12 06:17:06,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:17:06,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:06,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:17:06,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:17:06,958 INFO L87 Difference]: Start difference. First operand 3181 states and 4450 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:17:07,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:07,124 INFO L93 Difference]: Finished difference Result 3517 states and 5280 transitions. [2020-11-12 06:17:07,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:17:07,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2020-11-12 06:17:07,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:07,137 INFO L225 Difference]: With dead ends: 3517 [2020-11-12 06:17:07,137 INFO L226 Difference]: Without dead ends: 2397 [2020-11-12 06:17:07,137 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:17:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2020-11-12 06:17:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2397. [2020-11-12 06:17:07,195 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 06:17:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3380 transitions. [2020-11-12 06:17:07,205 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3380 transitions. Word has length 44 [2020-11-12 06:17:07,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:07,206 INFO L481 AbstractCegarLoop]: Abstraction has 2397 states and 3380 transitions. [2020-11-12 06:17:07,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:17:07,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3380 transitions. [2020-11-12 06:17:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 06:17:07,211 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:07,212 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 06:17:07,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 06:17:07,212 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:07,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:07,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1125592896, now seen corresponding path program 1 times [2020-11-12 06:17:07,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:07,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321265612] [2020-11-12 06:17:07,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:07,347 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 06:17:07,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321265612] [2020-11-12 06:17:07,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:07,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:17:07,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097483433] [2020-11-12 06:17:07,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:17:07,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:07,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:17:07,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:17:07,351 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 06:17:07,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:07,479 INFO L93 Difference]: Finished difference Result 3950 states and 5858 transitions. [2020-11-12 06:17:07,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 06:17:07,479 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 06:17:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:07,493 INFO L225 Difference]: With dead ends: 3950 [2020-11-12 06:17:07,493 INFO L226 Difference]: Without dead ends: 2356 [2020-11-12 06:17:07,495 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 06:17:07,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2020-11-12 06:17:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2356. [2020-11-12 06:17:07,559 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 06:17:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3323 transitions. [2020-11-12 06:17:07,569 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3323 transitions. Word has length 46 [2020-11-12 06:17:07,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:07,570 INFO L481 AbstractCegarLoop]: Abstraction has 2356 states and 3323 transitions. [2020-11-12 06:17:07,570 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 06:17:07,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3323 transitions. [2020-11-12 06:17:07,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 06:17:07,575 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:07,575 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] [2020-11-12 06:17:07,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 06:17:07,575 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:07,576 INFO L82 PathProgramCache]: Analyzing trace with hash 47617986, now seen corresponding path program 2 times [2020-11-12 06:17:07,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:07,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073333104] [2020-11-12 06:17:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:07,751 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 06:17:07,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073333104] [2020-11-12 06:17:07,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:07,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:17:07,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308811943] [2020-11-12 06:17:07,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:17:07,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:07,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:17:07,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:17:07,757 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 06:17:07,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:07,897 INFO L93 Difference]: Finished difference Result 3896 states and 5775 transitions. [2020-11-12 06:17:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 06:17:07,898 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 06:17:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:07,910 INFO L225 Difference]: With dead ends: 3896 [2020-11-12 06:17:07,910 INFO L226 Difference]: Without dead ends: 2315 [2020-11-12 06:17:07,911 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 06:17:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2020-11-12 06:17:07,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2315. [2020-11-12 06:17:07,969 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 06:17:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 3262 transitions. [2020-11-12 06:17:07,977 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 3262 transitions. Word has length 46 [2020-11-12 06:17:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:07,979 INFO L481 AbstractCegarLoop]: Abstraction has 2315 states and 3262 transitions. [2020-11-12 06:17:07,979 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 06:17:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 3262 transitions. [2020-11-12 06:17:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 06:17:07,987 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:07,988 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 06:17:07,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 06:17:07,988 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:07,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:07,989 INFO L82 PathProgramCache]: Analyzing trace with hash -29797218, now seen corresponding path program 3 times [2020-11-12 06:17:07,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:07,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597353755] [2020-11-12 06:17:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:08,123 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 06:17:08,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597353755] [2020-11-12 06:17:08,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:08,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:17:08,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270543031] [2020-11-12 06:17:08,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:17:08,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:08,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:17:08,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:17:08,126 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 06:17:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:08,251 INFO L93 Difference]: Finished difference Result 2811 states and 4224 transitions. [2020-11-12 06:17:08,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:17:08,252 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 06:17:08,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:08,263 INFO L225 Difference]: With dead ends: 2811 [2020-11-12 06:17:08,263 INFO L226 Difference]: Without dead ends: 2203 [2020-11-12 06:17:08,264 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 06:17:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2020-11-12 06:17:08,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2203. [2020-11-12 06:17:08,321 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 06:17:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3108 transitions. [2020-11-12 06:17:08,327 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3108 transitions. Word has length 46 [2020-11-12 06:17:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:08,328 INFO L481 AbstractCegarLoop]: Abstraction has 2203 states and 3108 transitions. [2020-11-12 06:17:08,328 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 06:17:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3108 transitions. [2020-11-12 06:17:08,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 06:17:08,333 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:08,333 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 06:17:08,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 06:17:08,334 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:08,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:08,335 INFO L82 PathProgramCache]: Analyzing trace with hash 403493214, now seen corresponding path program 1 times [2020-11-12 06:17:08,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:08,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63402526] [2020-11-12 06:17:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:08,447 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 06:17:08,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63402526] [2020-11-12 06:17:08,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:08,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:17:08,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66492815] [2020-11-12 06:17:08,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:17:08,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:08,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:17:08,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:17:08,449 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 06:17:08,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:08,591 INFO L93 Difference]: Finished difference Result 3915 states and 5940 transitions. [2020-11-12 06:17:08,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:17:08,592 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 06:17:08,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:08,604 INFO L225 Difference]: With dead ends: 3915 [2020-11-12 06:17:08,604 INFO L226 Difference]: Without dead ends: 2336 [2020-11-12 06:17:08,605 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 06:17:08,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2020-11-12 06:17:08,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1696. [2020-11-12 06:17:08,659 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 06:17:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2402 transitions. [2020-11-12 06:17:08,665 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2402 transitions. Word has length 47 [2020-11-12 06:17:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:08,665 INFO L481 AbstractCegarLoop]: Abstraction has 1696 states and 2402 transitions. [2020-11-12 06:17:08,666 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 06:17:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2402 transitions. [2020-11-12 06:17:08,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 06:17:08,670 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:08,670 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 06:17:08,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 06:17:08,670 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:08,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:08,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1337066365, now seen corresponding path program 1 times [2020-11-12 06:17:08,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:08,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140965992] [2020-11-12 06:17:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:08,801 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 06:17:08,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140965992] [2020-11-12 06:17:08,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:08,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:17:08,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999864982] [2020-11-12 06:17:08,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:17:08,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:08,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:17:08,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:17:08,804 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 06:17:08,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:08,936 INFO L93 Difference]: Finished difference Result 2044 states and 2817 transitions. [2020-11-12 06:17:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:17:08,938 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 06:17:08,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:08,951 INFO L225 Difference]: With dead ends: 2044 [2020-11-12 06:17:08,951 INFO L226 Difference]: Without dead ends: 1640 [2020-11-12 06:17:08,951 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 06:17:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2020-11-12 06:17:08,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2020-11-12 06:17:08,996 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 06:17:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2314 transitions. [2020-11-12 06:17:09,001 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2314 transitions. Word has length 48 [2020-11-12 06:17:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:09,002 INFO L481 AbstractCegarLoop]: Abstraction has 1640 states and 2314 transitions. [2020-11-12 06:17:09,002 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 06:17:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2314 transitions. [2020-11-12 06:17:09,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 06:17:09,007 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:09,007 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 06:17:09,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 06:17:09,007 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:09,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:09,008 INFO L82 PathProgramCache]: Analyzing trace with hash 878766874, now seen corresponding path program 1 times [2020-11-12 06:17:09,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:09,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138826785] [2020-11-12 06:17:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:09,176 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 06:17:09,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138826785] [2020-11-12 06:17:09,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:09,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:17:09,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39743271] [2020-11-12 06:17:09,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:17:09,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:09,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:17:09,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:17:09,180 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 06:17:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:09,311 INFO L93 Difference]: Finished difference Result 1712 states and 2327 transitions. [2020-11-12 06:17:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 06:17:09,312 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 06:17:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:09,318 INFO L225 Difference]: With dead ends: 1712 [2020-11-12 06:17:09,318 INFO L226 Difference]: Without dead ends: 1262 [2020-11-12 06:17:09,319 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 06:17:09,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2020-11-12 06:17:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1262. [2020-11-12 06:17:09,345 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 06:17:09,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1756 transitions. [2020-11-12 06:17:09,349 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1756 transitions. Word has length 49 [2020-11-12 06:17:09,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:09,349 INFO L481 AbstractCegarLoop]: Abstraction has 1262 states and 1756 transitions. [2020-11-12 06:17:09,349 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 06:17:09,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1756 transitions. [2020-11-12 06:17:09,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 06:17:09,353 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:09,353 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 06:17:09,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 06:17:09,353 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:09,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:09,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1952940243, now seen corresponding path program 1 times [2020-11-12 06:17:09,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:09,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995799050] [2020-11-12 06:17:09,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:09,456 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 06:17:09,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995799050] [2020-11-12 06:17:09,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:09,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 06:17:09,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533560696] [2020-11-12 06:17:09,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 06:17:09,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:09,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 06:17:09,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 06:17:09,459 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 06:17:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:09,610 INFO L93 Difference]: Finished difference Result 965 states and 1276 transitions. [2020-11-12 06:17:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 06:17:09,611 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 06:17:09,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:09,613 INFO L225 Difference]: With dead ends: 965 [2020-11-12 06:17:09,613 INFO L226 Difference]: Without dead ends: 481 [2020-11-12 06:17:09,614 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 06:17:09,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-11-12 06:17:09,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2020-11-12 06:17:09,624 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 06:17:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 657 transitions. [2020-11-12 06:17:09,626 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 657 transitions. Word has length 51 [2020-11-12 06:17:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:09,626 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 657 transitions. [2020-11-12 06:17:09,627 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 06:17:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 657 transitions. [2020-11-12 06:17:09,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 06:17:09,628 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:17:09,628 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 06:17:09,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-12 06:17:09,629 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:17:09,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:17:09,629 INFO L82 PathProgramCache]: Analyzing trace with hash -301500556, now seen corresponding path program 1 times [2020-11-12 06:17:09,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:17:09,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446614587] [2020-11-12 06:17:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:17:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:17:09,717 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 06:17:09,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446614587] [2020-11-12 06:17:09,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:17:09,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:17:09,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344009665] [2020-11-12 06:17:09,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:17:09,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:17:09,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:17:09,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:17:09,720 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 06:17:09,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:17:09,795 INFO L93 Difference]: Finished difference Result 373 states and 549 transitions. [2020-11-12 06:17:09,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 06:17:09,795 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 06:17:09,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:17:09,796 INFO L225 Difference]: With dead ends: 373 [2020-11-12 06:17:09,796 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 06:17:09,796 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:17:09,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 06:17:09,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 06:17:09,797 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 06:17:09,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 06:17:09,797 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-12 06:17:09,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:17:09,797 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 06:17:09,798 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 06:17:09,798 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 06:17:09,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 06:17:09,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-12 06:17:09,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:17:09 BasicIcfg [2020-11-12 06:17:09,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 06:17:09,805 INFO L168 Benchmark]: Toolchain (without parser) took 8308.51 ms. Allocated memory was 302.0 MB in the beginning and 595.6 MB in the end (delta: 293.6 MB). Free memory was 277.4 MB in the beginning and 413.8 MB in the end (delta: -136.4 MB). Peak memory consumption was 158.5 MB. Max. memory is 16.0 GB. [2020-11-12 06:17:09,806 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 06:17:09,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.13 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 246.0 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-12 06:17:09,808 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.89 ms. Allocated memory is still 302.0 MB. Free memory was 246.0 MB in the beginning and 243.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:17:09,808 INFO L168 Benchmark]: Boogie Preprocessor took 29.57 ms. Allocated memory is still 302.0 MB. Free memory was 243.9 MB in the beginning and 242.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:17:09,809 INFO L168 Benchmark]: RCFGBuilder took 566.59 ms. Allocated memory is still 302.0 MB. Free memory was 242.6 MB in the beginning and 263.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-11-12 06:17:09,810 INFO L168 Benchmark]: TraceAbstraction took 6856.21 ms. Allocated memory was 302.0 MB in the beginning and 595.6 MB in the end (delta: 293.6 MB). Free memory was 263.7 MB in the beginning and 413.8 MB in the end (delta: -150.2 MB). Peak memory consumption was 143.4 MB. Max. memory is 16.0 GB. [2020-11-12 06:17:09,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 756.13 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 246.0 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 83.89 ms. Allocated memory is still 302.0 MB. Free memory was 246.0 MB in the beginning and 243.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.57 ms. Allocated memory is still 302.0 MB. Free memory was 243.9 MB in the beginning and 242.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 566.59 ms. Allocated memory is still 302.0 MB. Free memory was 242.6 MB in the beginning and 263.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6856.21 ms. Allocated memory was 302.0 MB in the beginning and 595.6 MB in the end (delta: 293.6 MB). Free memory was 263.7 MB in the beginning and 413.8 MB in the end (delta: -150.2 MB). Peak memory consumption was 143.4 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: 6.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 831 SDtfs, 946 SDslu, 2934 SDs, 0 SdLazy, 361 SolverSat, 35 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, 1.6s 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: 0.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 640 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 514 NumberOfCodeBlocks, 514 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 60271 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...