/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:10:05,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:10:05,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:10:06,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:10:06,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:10:06,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:10:06,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:10:06,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:10:06,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:10:06,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:10:06,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:10:06,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:10:06,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:10:06,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:10:06,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:10:06,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:10:06,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:10:06,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:10:06,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:10:06,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:10:06,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:10:06,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:10:06,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:10:06,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:10:06,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 18:10:06,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 18:10:06,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 18:10:06,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 18:10:06,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 18:10:06,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 18:10:06,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:10:06,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:10:06,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:10:06,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:10:06,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:10:06,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:10:06,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:10:06,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:10:06,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:10:06,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:10:06,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:10:06,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-11-11 18:10:06,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:10:06,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:10:06,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:10:06,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:10:06,102 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:10:06,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:10:06,103 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:10:06,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:10:06,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:10:06,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:10:06,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:10:06,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:10:06,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:10:06,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:10:06,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:10:06,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:10:06,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:10:06,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:10:06,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:10:06,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:10:06,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:10:06,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:10:06,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:10:06,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:10:06,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:10:06,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:10:06,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:10:06,109 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:10:06,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:10:06,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:10:06,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:10:06,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:10:06,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:10:06,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:10:06,613 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:10:06,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-11-11 18:10:06,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f85d557a/625de3ccf0564988ba01fa9655dcdf3e/FLAGa16a6915b [2020-11-11 18:10:07,522 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:10:07,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-11-11 18:10:07,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f85d557a/625de3ccf0564988ba01fa9655dcdf3e/FLAGa16a6915b [2020-11-11 18:10:07,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f85d557a/625de3ccf0564988ba01fa9655dcdf3e [2020-11-11 18:10:07,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:10:07,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:10:07,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:10:07,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:10:07,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:10:07,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:10:07" (1/1) ... [2020-11-11 18:10:07,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@213adb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:07, skipping insertion in model container [2020-11-11 18:10:07,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:10:07" (1/1) ... [2020-11-11 18:10:07,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:10:07,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:10:08,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:10:08,258 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:10:08,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:10:08,457 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:10:08,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:08 WrapperNode [2020-11-11 18:10:08,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:10:08,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:10:08,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:10:08,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:10:08,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:08" (1/1) ... [2020-11-11 18:10:08,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:08" (1/1) ... [2020-11-11 18:10:08,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:10:08,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:10:08,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:10:08,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:10:08,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:08" (1/1) ... [2020-11-11 18:10:08,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:08" (1/1) ... [2020-11-11 18:10:08,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:08" (1/1) ... [2020-11-11 18:10:08,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:08" (1/1) ... [2020-11-11 18:10:08,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:08" (1/1) ... [2020-11-11 18:10:08,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:08" (1/1) ... [2020-11-11 18:10:08,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:08" (1/1) ... [2020-11-11 18:10:08,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:10:08,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:10:08,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:10:08,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:10:08,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:08" (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 [2020-11-11 18:10:08,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:10:08,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:10:08,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:10:08,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:10:08,663 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:10:08,668 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:10:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:10:08,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:10:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:10:08,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:10:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:10:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:10:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:10:08,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:10:08,672 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:10:09,162 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:10:09,162 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:10:09,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:10:09 BoogieIcfgContainer [2020-11-11 18:10:09,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:10:09,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:10:09,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:10:09,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:10:09,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:10:07" (1/3) ... [2020-11-11 18:10:09,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8589e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:10:09, skipping insertion in model container [2020-11-11 18:10:09,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:08" (2/3) ... [2020-11-11 18:10:09,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8589e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:10:09, skipping insertion in model container [2020-11-11 18:10:09,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:10:09" (3/3) ... [2020-11-11 18:10:09,174 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2020-11-11 18:10:09,191 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:10:09,191 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:10:09,195 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:10:09,197 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:10:09,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,236 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,237 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,237 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,237 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,240 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,240 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,243 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,243 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,244 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,244 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,244 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,245 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,245 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,245 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,245 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,251 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,251 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,251 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,252 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,260 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,261 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,261 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,265 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,265 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,266 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:09,268 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:10:09,281 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:10:09,306 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:10:09,306 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:10:09,307 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:10:09,307 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:10:09,307 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:10:09,307 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:10:09,307 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:10:09,308 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:10:09,321 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-11 18:10:10,071 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-11 18:10:10,190 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:10,191 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] [2020-11-11 18:10:10,192 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:10,205 INFO L82 PathProgramCache]: Analyzing trace with hash 31988960, now seen corresponding path program 1 times [2020-11-11 18:10:10,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:10,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283635135] [2020-11-11 18:10:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:10:10,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283635135] [2020-11-11 18:10:10,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:10,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:10:10,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139081392] [2020-11-11 18:10:10,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:10:10,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:10,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:10:10,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:10:10,921 INFO L87 Difference]: Start difference. First operand has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 0 states have call successors, (0), 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 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:11,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:11,318 INFO L93 Difference]: Finished difference Result 10464 states and 36160 transitions. [2020-11-11 18:10:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:10:11,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2020-11-11 18:10:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:11,381 INFO L225 Difference]: With dead ends: 10464 [2020-11-11 18:10:11,381 INFO L226 Difference]: Without dead ends: 3954 [2020-11-11 18:10:11,383 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:10:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2020-11-11 18:10:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3954. [2020-11-11 18:10:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3954 states, 3953 states have (on average 3.3885656463445484) internal successors, (13395), 3953 states have internal predecessors, (13395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3954 states to 3954 states and 13395 transitions. [2020-11-11 18:10:11,741 INFO L78 Accepts]: Start accepts. Automaton has 3954 states and 13395 transitions. Word has length 42 [2020-11-11 18:10:11,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:11,742 INFO L481 AbstractCegarLoop]: Abstraction has 3954 states and 13395 transitions. [2020-11-11 18:10:11,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:11,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3954 states and 13395 transitions. [2020-11-11 18:10:11,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-11 18:10:11,754 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:11,754 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] [2020-11-11 18:10:11,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:10:11,754 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:11,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:11,756 INFO L82 PathProgramCache]: Analyzing trace with hash -95647071, now seen corresponding path program 1 times [2020-11-11 18:10:11,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:11,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653939602] [2020-11-11 18:10:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:10:12,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653939602] [2020-11-11 18:10:12,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:12,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:10:12,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512918160] [2020-11-11 18:10:12,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:10:12,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:12,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:10:12,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:10:12,040 INFO L87 Difference]: Start difference. First operand 3954 states and 13395 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2020-11-11 18:10:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:12,411 INFO L93 Difference]: Finished difference Result 4914 states and 16433 transitions. [2020-11-11 18:10:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:10:12,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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 [2020-11-11 18:10:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:12,437 INFO L225 Difference]: With dead ends: 4914 [2020-11-11 18:10:12,437 INFO L226 Difference]: Without dead ends: 2464 [2020-11-11 18:10:12,438 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:10:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2020-11-11 18:10:12,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2464. [2020-11-11 18:10:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2463 states have (on average 3.278116118554608) internal successors, (8074), 2463 states have internal predecessors, (8074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 8074 transitions. [2020-11-11 18:10:12,549 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 8074 transitions. Word has length 44 [2020-11-11 18:10:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:12,549 INFO L481 AbstractCegarLoop]: Abstraction has 2464 states and 8074 transitions. [2020-11-11 18:10:12,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2020-11-11 18:10:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 8074 transitions. [2020-11-11 18:10:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:10:12,557 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:12,557 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] [2020-11-11 18:10:12,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:10:12,558 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:12,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:12,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1389736977, now seen corresponding path program 1 times [2020-11-11 18:10:12,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:12,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036929459] [2020-11-11 18:10:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:10:12,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036929459] [2020-11-11 18:10:12,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:12,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:10:12,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865895533] [2020-11-11 18:10:12,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:10:12,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:12,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:10:12,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:10:12,764 INFO L87 Difference]: Start difference. First operand 2464 states and 8074 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2020-11-11 18:10:13,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:13,072 INFO L93 Difference]: Finished difference Result 3464 states and 11256 transitions. [2020-11-11 18:10:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:10:13,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 [2020-11-11 18:10:13,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:13,087 INFO L225 Difference]: With dead ends: 3464 [2020-11-11 18:10:13,087 INFO L226 Difference]: Without dead ends: 1724 [2020-11-11 18:10:13,088 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:10:13,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2020-11-11 18:10:13,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2020-11-11 18:10:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 3.1677307022634937) internal successors, (5458), 1723 states have internal predecessors, (5458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 5458 transitions. [2020-11-11 18:10:13,160 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 5458 transitions. Word has length 47 [2020-11-11 18:10:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:13,160 INFO L481 AbstractCegarLoop]: Abstraction has 1724 states and 5458 transitions. [2020-11-11 18:10:13,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2020-11-11 18:10:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 5458 transitions. [2020-11-11 18:10:13,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-11 18:10:13,167 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:13,167 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] [2020-11-11 18:10:13,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:10:13,168 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:13,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1496327244, now seen corresponding path program 1 times [2020-11-11 18:10:13,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:13,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084398357] [2020-11-11 18:10:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:10:13,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084398357] [2020-11-11 18:10:13,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:13,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:10:13,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859115393] [2020-11-11 18:10:13,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:10:13,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:13,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:10:13,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:10:13,357 INFO L87 Difference]: Start difference. First operand 1724 states and 5458 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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) [2020-11-11 18:10:13,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:13,550 INFO L93 Difference]: Finished difference Result 2194 states and 6875 transitions. [2020-11-11 18:10:13,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:10:13,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 [2020-11-11 18:10:13,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:13,565 INFO L225 Difference]: With dead ends: 2194 [2020-11-11 18:10:13,565 INFO L226 Difference]: Without dead ends: 1618 [2020-11-11 18:10:13,566 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:10:13,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2020-11-11 18:10:13,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1618. [2020-11-11 18:10:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.1471861471861473) internal successors, (5089), 1617 states have internal predecessors, (5089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5089 transitions. [2020-11-11 18:10:13,673 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5089 transitions. Word has length 49 [2020-11-11 18:10:13,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:13,674 INFO L481 AbstractCegarLoop]: Abstraction has 1618 states and 5089 transitions. [2020-11-11 18:10:13,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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) [2020-11-11 18:10:13,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5089 transitions. [2020-11-11 18:10:13,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-11 18:10:13,679 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:13,680 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] [2020-11-11 18:10:13,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:10:13,680 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:13,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:13,682 INFO L82 PathProgramCache]: Analyzing trace with hash 577338396, now seen corresponding path program 1 times [2020-11-11 18:10:13,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:13,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346412601] [2020-11-11 18:10:13,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:10:13,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346412601] [2020-11-11 18:10:13,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:13,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:10:13,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272001753] [2020-11-11 18:10:13,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:10:13,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:13,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:10:13,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:10:13,894 INFO L87 Difference]: Start difference. First operand 1618 states and 5089 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:14,117 INFO L93 Difference]: Finished difference Result 1777 states and 5456 transitions. [2020-11-11 18:10:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:10:14,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2020-11-11 18:10:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:14,129 INFO L225 Difference]: With dead ends: 1777 [2020-11-11 18:10:14,129 INFO L226 Difference]: Without dead ends: 1273 [2020-11-11 18:10:14,130 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:10:14,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-11-11 18:10:14,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1273. [2020-11-11 18:10:14,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1272 states have (on average 3.0416666666666665) internal successors, (3869), 1272 states have internal predecessors, (3869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:14,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 3869 transitions. [2020-11-11 18:10:14,185 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 3869 transitions. Word has length 50 [2020-11-11 18:10:14,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:14,186 INFO L481 AbstractCegarLoop]: Abstraction has 1273 states and 3869 transitions. [2020-11-11 18:10:14,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 3869 transitions. [2020-11-11 18:10:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-11 18:10:14,190 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:14,190 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] [2020-11-11 18:10:14,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:10:14,191 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:14,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:14,191 INFO L82 PathProgramCache]: Analyzing trace with hash -270393692, now seen corresponding path program 1 times [2020-11-11 18:10:14,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:14,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226956046] [2020-11-11 18:10:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:10:14,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226956046] [2020-11-11 18:10:14,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:14,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:10:14,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702807001] [2020-11-11 18:10:14,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:10:14,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:14,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:10:14,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:10:14,351 INFO L87 Difference]: Start difference. First operand 1273 states and 3869 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) [2020-11-11 18:10:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:14,657 INFO L93 Difference]: Finished difference Result 1039 states and 3026 transitions. [2020-11-11 18:10:14,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:10:14,658 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 [2020-11-11 18:10:14,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:14,665 INFO L225 Difference]: With dead ends: 1039 [2020-11-11 18:10:14,665 INFO L226 Difference]: Without dead ends: 715 [2020-11-11 18:10:14,666 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-11 18:10:14,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-11-11 18:10:14,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2020-11-11 18:10:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 2.8137254901960786) internal successors, (2009), 714 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 2009 transitions. [2020-11-11 18:10:14,697 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 2009 transitions. Word has length 51 [2020-11-11 18:10:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:14,698 INFO L481 AbstractCegarLoop]: Abstraction has 715 states and 2009 transitions. [2020-11-11 18:10:14,699 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) [2020-11-11 18:10:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 2009 transitions. [2020-11-11 18:10:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-11 18:10:14,702 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:14,702 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] [2020-11-11 18:10:14,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:10:14,703 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:14,704 INFO L82 PathProgramCache]: Analyzing trace with hash 796083109, now seen corresponding path program 1 times [2020-11-11 18:10:14,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:14,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180116455] [2020-11-11 18:10:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:10:14,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180116455] [2020-11-11 18:10:14,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:14,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:10:14,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223756486] [2020-11-11 18:10:14,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:10:14,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:14,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:10:14,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:10:14,879 INFO L87 Difference]: Start difference. First operand 715 states and 2009 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) [2020-11-11 18:10:15,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:15,002 INFO L93 Difference]: Finished difference Result 607 states and 1685 transitions. [2020-11-11 18:10:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:10:15,003 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 [2020-11-11 18:10:15,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:15,004 INFO L225 Difference]: With dead ends: 607 [2020-11-11 18:10:15,004 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:10:15,005 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:10:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:10:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:10:15,006 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) [2020-11-11 18:10:15,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:10:15,006 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-11 18:10:15,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:15,006 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:10:15,007 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) [2020-11-11 18:10:15,007 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:10:15,007 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:10:15,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:10:15,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:10:15 BasicIcfg [2020-11-11 18:10:15,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:10:15,015 INFO L168 Benchmark]: Toolchain (without parser) took 7284.36 ms. Allocated memory was 302.0 MB in the beginning and 996.1 MB in the end (delta: 694.2 MB). Free memory was 276.5 MB in the beginning and 861.9 MB in the end (delta: -585.4 MB). Peak memory consumption was 110.8 MB. Max. memory is 16.0 GB. [2020-11-11 18:10:15,016 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:10:15,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.80 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 274.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.0 GB. [2020-11-11 18:10:15,025 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.36 ms. Allocated memory is still 302.0 MB. Free memory was 274.4 MB in the beginning and 272.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:10:15,026 INFO L168 Benchmark]: Boogie Preprocessor took 43.35 ms. Allocated memory is still 302.0 MB. Free memory was 272.7 MB in the beginning and 271.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:10:15,027 INFO L168 Benchmark]: RCFGBuilder took 603.17 ms. Allocated memory is still 302.0 MB. Free memory was 271.2 MB in the beginning and 249.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-11-11 18:10:15,028 INFO L168 Benchmark]: TraceAbstraction took 5845.89 ms. Allocated memory was 302.0 MB in the beginning and 996.1 MB in the end (delta: 694.2 MB). Free memory was 248.7 MB in the beginning and 861.9 MB in the end (delta: -613.2 MB). Peak memory consumption was 81.9 MB. Max. memory is 16.0 GB. [2020-11-11 18:10:15,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 719.80 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 274.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 57.36 ms. Allocated memory is still 302.0 MB. Free memory was 274.4 MB in the beginning and 272.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 43.35 ms. Allocated memory is still 302.0 MB. Free memory was 272.7 MB in the beginning and 271.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 603.17 ms. Allocated memory is still 302.0 MB. Free memory was 271.2 MB in the beginning and 249.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5845.89 ms. Allocated memory was 302.0 MB in the beginning and 996.1 MB in the end (delta: 694.2 MB). Free memory was 248.7 MB in the beginning and 861.9 MB in the end (delta: -613.2 MB). Peak memory consumption was 81.9 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: 5.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 615 SDtfs, 943 SDslu, 1995 SDs, 0 SdLazy, 278 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8448occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 329 ConstructedInterpolants, 0 QuantifiedInterpolants, 43243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...