/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-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 21:13:34,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 21:13:34,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 21:13:34,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 21:13:34,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 21:13:34,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 21:13:34,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 21:13:34,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 21:13:34,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 21:13:34,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 21:13:34,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 21:13:34,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 21:13:34,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 21:13:34,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 21:13:34,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 21:13:34,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 21:13:34,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 21:13:34,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 21:13:34,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 21:13:34,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 21:13:34,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 21:13:34,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 21:13:34,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 21:13:34,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 21:13:34,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 21:13:34,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 21:13:34,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 21:13:34,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 21:13:34,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 21:13:34,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 21:13:34,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 21:13:34,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 21:13:34,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 21:13:34,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 21:13:34,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 21:13:34,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 21:13:34,279 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-keepdead.epf [2021-01-20 21:13:34,307 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 21:13:34,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 21:13:34,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 21:13:34,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 21:13:34,310 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 21:13:34,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 21:13:34,311 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 21:13:34,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 21:13:34,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 21:13:34,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 21:13:34,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 21:13:34,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 21:13:34,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 21:13:34,313 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 21:13:34,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 21:13:34,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 21:13:34,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 21:13:34,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 21:13:34,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 21:13:34,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 21:13:34,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 21:13:34,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:13:34,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 21:13:34,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 21:13:34,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 21:13:34,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 21:13:34,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 21:13:34,317 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 21:13:34,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 21:13:34,317 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 21:13:34,318 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 21:13:34,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 21:13:34,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 21:13:34,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 21:13:34,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 21:13:34,755 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 21:13:34,756 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 21:13:34,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-01-20 21:13:34,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e41cffb0d/618904d309484767ae9d0c16ea9ece9b/FLAGbf3112ef1 [2021-01-20 21:13:35,579 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 21:13:35,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-01-20 21:13:35,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e41cffb0d/618904d309484767ae9d0c16ea9ece9b/FLAGbf3112ef1 [2021-01-20 21:13:35,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e41cffb0d/618904d309484767ae9d0c16ea9ece9b [2021-01-20 21:13:35,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 21:13:35,769 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 21:13:35,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 21:13:35,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 21:13:35,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 21:13:35,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:13:35" (1/1) ... [2021-01-20 21:13:35,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e99bec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:35, skipping insertion in model container [2021-01-20 21:13:35,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:13:35" (1/1) ... [2021-01-20 21:13:35,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 21:13:35,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 21:13:36,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:13:36,318 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 21:13:36,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:13:36,488 INFO L208 MainTranslator]: Completed translation [2021-01-20 21:13:36,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:36 WrapperNode [2021-01-20 21:13:36,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 21:13:36,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 21:13:36,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 21:13:36,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 21:13:36,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:36" (1/1) ... [2021-01-20 21:13:36,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:36" (1/1) ... [2021-01-20 21:13:36,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 21:13:36,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 21:13:36,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 21:13:36,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 21:13:36,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:36" (1/1) ... [2021-01-20 21:13:36,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:36" (1/1) ... [2021-01-20 21:13:36,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:36" (1/1) ... [2021-01-20 21:13:36,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:36" (1/1) ... [2021-01-20 21:13:36,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:36" (1/1) ... [2021-01-20 21:13:36,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:36" (1/1) ... [2021-01-20 21:13:36,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:36" (1/1) ... [2021-01-20 21:13:36,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 21:13:36,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 21:13:36,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 21:13:36,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 21:13:36,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:13:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 21:13:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 21:13:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 21:13:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 21:13:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 21:13:36,650 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 21:13:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 21:13:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 21:13:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 21:13:36,652 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 21:13:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 21:13:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 21:13:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 21:13:36,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 21:13:36,655 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 21:13:37,130 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 21:13:37,130 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 21:13:37,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:13:37 BoogieIcfgContainer [2021-01-20 21:13:37,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 21:13:37,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 21:13:37,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 21:13:37,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 21:13:37,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:13:35" (1/3) ... [2021-01-20 21:13:37,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1c0790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:13:37, skipping insertion in model container [2021-01-20 21:13:37,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:13:36" (2/3) ... [2021-01-20 21:13:37,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1c0790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:13:37, skipping insertion in model container [2021-01-20 21:13:37,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:13:37" (3/3) ... [2021-01-20 21:13:37,140 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-01-20 21:13:37,155 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 21:13:37,155 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 21:13:37,159 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 21:13:37,160 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 21:13:37,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,187 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,188 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,188 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,188 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,188 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,188 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,190 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,191 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,191 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,191 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,191 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,191 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,193 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,193 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,194 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,194 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,195 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,195 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,195 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,198 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,198 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,204 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,204 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,204 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,204 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,208 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,209 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,209 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,209 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:13:37,216 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 21:13:37,228 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 21:13:37,249 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 21:13:37,249 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 21:13:37,250 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 21:13:37,250 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 21:13:37,250 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 21:13:37,250 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 21:13:37,250 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 21:13:37,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 21:13:37,261 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2021-01-20 21:13:38,254 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:13:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:13:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-20 21:13:38,357 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:13:38,358 INFO L504 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] [2021-01-20 21:13:38,359 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:13:38,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:13:38,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1557079206, now seen corresponding path program 1 times [2021-01-20 21:13:38,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:13:38,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702054473] [2021-01-20 21:13:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:13:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:13:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:13:38,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702054473] [2021-01-20 21:13:38,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:13:38,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:13:38,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251204570] [2021-01-20 21:13:38,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:13:38,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:13:38,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:13:38,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:13:38,932 INFO L87 Difference]: Start difference. First operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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) [2021-01-20 21:13:39,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:13:39,438 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2021-01-20 21:13:39,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:13:39,440 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 [2021-01-20 21:13:39,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:13:39,442 INFO L769 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 [2021-01-20 21:13:39,443 INFO L78 Accepts]: Start accepts. Automaton has 12200 states and 42464 transitions. Word has length 42 [2021-01-20 21:13:39,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:13:39,445 INFO L481 AbstractCegarLoop]: Abstraction has 12200 states and 42464 transitions. [2021-01-20 21:13:39,445 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) [2021-01-20 21:13:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 12200 states and 42464 transitions. [2021-01-20 21:13:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 21:13:39,544 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:13:39,544 INFO L504 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] [2021-01-20 21:13:39,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 21:13:39,544 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:13:39,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:13:39,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1581474041, now seen corresponding path program 1 times [2021-01-20 21:13:39,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:13:39,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051653266] [2021-01-20 21:13:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:13:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:13:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:13:39,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051653266] [2021-01-20 21:13:39,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:13:39,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:13:39,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659263646] [2021-01-20 21:13:39,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:13:39,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:13:39,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:13:39,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:13:39,810 INFO L87 Difference]: Start difference. First operand 12200 states and 42464 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) [2021-01-20 21:13:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:13:40,321 INFO L93 Difference]: Finished difference Result 16820 states and 57820 transitions. [2021-01-20 21:13:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:13:40,322 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 [2021-01-20 21:13:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:13:40,324 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-01-20 21:13:40,325 INFO L78 Accepts]: Start accepts. Automaton has 16820 states and 57820 transitions. Word has length 44 [2021-01-20 21:13:40,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:13:40,327 INFO L481 AbstractCegarLoop]: Abstraction has 16820 states and 57820 transitions. [2021-01-20 21:13:40,327 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) [2021-01-20 21:13:40,327 INFO L276 IsEmpty]: Start isEmpty. Operand 16820 states and 57820 transitions. [2021-01-20 21:13:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 21:13:40,360 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:13:40,360 INFO L504 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] [2021-01-20 21:13:40,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 21:13:40,360 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:13:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:13:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash 674177462, now seen corresponding path program 1 times [2021-01-20 21:13:40,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:13:40,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180820037] [2021-01-20 21:13:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:13:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:13:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:13:40,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180820037] [2021-01-20 21:13:40,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:13:40,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:13:40,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588423397] [2021-01-20 21:13:40,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:13:40,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:13:40,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:13:40,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:13:40,645 INFO L87 Difference]: Start difference. First operand 16820 states and 57820 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) [2021-01-20 21:13:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:13:41,117 INFO L93 Difference]: Finished difference Result 25340 states and 86536 transitions. [2021-01-20 21:13:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:13:41,117 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 [2021-01-20 21:13:41,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:13:41,119 INFO L769 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 [2021-01-20 21:13:41,119 INFO L78 Accepts]: Start accepts. Automaton has 25340 states and 86536 transitions. Word has length 47 [2021-01-20 21:13:41,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:13:41,122 INFO L481 AbstractCegarLoop]: Abstraction has 25340 states and 86536 transitions. [2021-01-20 21:13:41,122 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) [2021-01-20 21:13:41,122 INFO L276 IsEmpty]: Start isEmpty. Operand 25340 states and 86536 transitions. [2021-01-20 21:13:41,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 21:13:41,229 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:13:41,229 INFO L504 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] [2021-01-20 21:13:41,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 21:13:41,230 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:13:41,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:13:41,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1902429865, now seen corresponding path program 1 times [2021-01-20 21:13:41,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:13:41,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568204642] [2021-01-20 21:13:41,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:13:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:13:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:13:41,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568204642] [2021-01-20 21:13:41,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:13:41,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:13:41,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466188619] [2021-01-20 21:13:41,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:13:41,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:13:41,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:13:41,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:13:41,412 INFO L87 Difference]: Start difference. First operand 25340 states and 86536 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) [2021-01-20 21:13:42,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:13:42,335 INFO L93 Difference]: Finished difference Result 47004 states and 158862 transitions. [2021-01-20 21:13:42,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-20 21:13:42,335 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 [2021-01-20 21:13:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:13:42,337 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-01-20 21:13:42,337 INFO L78 Accepts]: Start accepts. Automaton has 47004 states and 158862 transitions. Word has length 49 [2021-01-20 21:13:42,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:13:42,338 INFO L481 AbstractCegarLoop]: Abstraction has 47004 states and 158862 transitions. [2021-01-20 21:13:42,338 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) [2021-01-20 21:13:42,338 INFO L276 IsEmpty]: Start isEmpty. Operand 47004 states and 158862 transitions. [2021-01-20 21:13:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 21:13:42,399 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:13:42,399 INFO L504 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] [2021-01-20 21:13:42,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 21:13:42,399 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:13:42,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:13:42,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1518373285, now seen corresponding path program 1 times [2021-01-20 21:13:42,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:13:42,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167654863] [2021-01-20 21:13:42,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:13:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:13:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:13:42,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167654863] [2021-01-20 21:13:42,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:13:42,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:13:42,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900408934] [2021-01-20 21:13:42,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:13:42,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:13:42,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:13:42,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:13:42,758 INFO L87 Difference]: Start difference. First operand 47004 states and 158862 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2021-01-20 21:13:43,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:13:43,161 INFO L93 Difference]: Finished difference Result 34008 states and 112147 transitions. [2021-01-20 21:13:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 21:13:43,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 [2021-01-20 21:13:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:13:43,163 INFO L769 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 [2021-01-20 21:13:43,163 INFO L78 Accepts]: Start accepts. Automaton has 34008 states and 112147 transitions. Word has length 50 [2021-01-20 21:13:43,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:13:43,163 INFO L481 AbstractCegarLoop]: Abstraction has 34008 states and 112147 transitions. [2021-01-20 21:13:43,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2021-01-20 21:13:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 34008 states and 112147 transitions. [2021-01-20 21:13:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 21:13:43,208 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:13:43,208 INFO L504 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] [2021-01-20 21:13:43,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 21:13:43,209 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:13:43,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:13:43,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1388621878, now seen corresponding path program 1 times [2021-01-20 21:13:43,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:13:43,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605378053] [2021-01-20 21:13:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:13:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:13:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:13:43,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605378053] [2021-01-20 21:13:43,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:13:43,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:13:43,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397454877] [2021-01-20 21:13:43,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:13:43,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:13:43,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:13:43,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:13:43,487 INFO L87 Difference]: Start difference. First operand 34008 states and 112147 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2021-01-20 21:13:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:13:43,958 INFO L93 Difference]: Finished difference Result 20580 states and 65884 transitions. [2021-01-20 21:13:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:13:43,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 [2021-01-20 21:13:43,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:13:43,961 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-20 21:13:43,961 INFO L78 Accepts]: Start accepts. Automaton has 20580 states and 65884 transitions. Word has length 51 [2021-01-20 21:13:43,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:13:43,962 INFO L481 AbstractCegarLoop]: Abstraction has 20580 states and 65884 transitions. [2021-01-20 21:13:43,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2021-01-20 21:13:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand 20580 states and 65884 transitions. [2021-01-20 21:13:43,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 21:13:43,993 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:13:43,993 INFO L504 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] [2021-01-20 21:13:43,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 21:13:43,994 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:13:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:13:43,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1603073441, now seen corresponding path program 1 times [2021-01-20 21:13:43,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:13:43,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859089585] [2021-01-20 21:13:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:13:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:13:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:13:44,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859089585] [2021-01-20 21:13:44,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:13:44,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 21:13:44,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656925991] [2021-01-20 21:13:44,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 21:13:44,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:13:44,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 21:13:44,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 21:13:44,165 INFO L87 Difference]: Start difference. First operand 20580 states and 65884 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:13:44,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:13:44,672 INFO L93 Difference]: Finished difference Result 13128 states and 41764 transitions. [2021-01-20 21:13:44,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 21:13:44,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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 52 [2021-01-20 21:13:44,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:13:44,673 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-01-20 21:13:44,673 INFO L78 Accepts]: Start accepts. Automaton has 13128 states and 41764 transitions. Word has length 52 [2021-01-20 21:13:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:13:44,674 INFO L481 AbstractCegarLoop]: Abstraction has 13128 states and 41764 transitions. [2021-01-20 21:13:44,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:13:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 13128 states and 41764 transitions. [2021-01-20 21:13:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 21:13:44,691 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:13:44,691 INFO L504 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, 1] [2021-01-20 21:13:44,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 21:13:44,692 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:13:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:13:44,692 INFO L82 PathProgramCache]: Analyzing trace with hash -986251264, now seen corresponding path program 1 times [2021-01-20 21:13:44,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:13:44,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069579905] [2021-01-20 21:13:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:13:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:13:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:13:44,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069579905] [2021-01-20 21:13:44,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:13:44,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:13:44,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478284099] [2021-01-20 21:13:44,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:13:44,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:13:44,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:13:44,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:13:44,806 INFO L87 Difference]: Start difference. First operand 13128 states and 41764 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:13:45,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:13:45,006 INFO L93 Difference]: Finished difference Result 20412 states and 63944 transitions. [2021-01-20 21:13:45,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:13:45,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-01-20 21:13:45,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:13:45,008 INFO L769 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 [2021-01-20 21:13:45,008 INFO L78 Accepts]: Start accepts. Automaton has 20412 states and 63944 transitions. Word has length 54 [2021-01-20 21:13:45,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:13:45,009 INFO L481 AbstractCegarLoop]: Abstraction has 20412 states and 63944 transitions. [2021-01-20 21:13:45,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:13:45,009 INFO L276 IsEmpty]: Start isEmpty. Operand 20412 states and 63944 transitions. [2021-01-20 21:13:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 21:13:45,041 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:13:45,042 INFO L504 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, 1] [2021-01-20 21:13:45,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 21:13:45,042 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:13:45,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:13:45,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1457594808, now seen corresponding path program 2 times [2021-01-20 21:13:45,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:13:45,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150948569] [2021-01-20 21:13:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:13:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:13:45,361 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2021-01-20 21:13:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:13:45,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150948569] [2021-01-20 21:13:45,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:13:45,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:13:45,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70062739] [2021-01-20 21:13:45,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:13:45,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:13:45,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:13:45,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:13:45,402 INFO L87 Difference]: Start difference. First operand 20412 states and 63944 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:13:45,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:13:45,652 INFO L93 Difference]: Finished difference Result 26544 states and 82880 transitions. [2021-01-20 21:13:45,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:13:45,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-01-20 21:13:45,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:13:45,654 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:13:45,654 INFO L78 Accepts]: Start accepts. Automaton has 26544 states and 82880 transitions. Word has length 54 [2021-01-20 21:13:45,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:13:45,655 INFO L481 AbstractCegarLoop]: Abstraction has 26544 states and 82880 transitions. [2021-01-20 21:13:45,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:13:45,655 INFO L276 IsEmpty]: Start isEmpty. Operand 26544 states and 82880 transitions. [2021-01-20 21:13:45,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 21:13:45,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-20 21:13:45,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:13:45 BasicIcfg [2021-01-20 21:13:45,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 21:13:45,710 INFO L168 Benchmark]: Toolchain (without parser) took 9942.01 ms. Allocated memory was 306.2 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 280.3 MB in the beginning and 2.3 GB in the end (delta: -2.0 GB). Peak memory consumption was 414.9 MB. Max. memory is 16.0 GB. [2021-01-20 21:13:45,711 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 306.2 MB. Free memory is still 277.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:13:45,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.68 ms. Allocated memory is still 306.2 MB. Free memory was 280.1 MB in the beginning and 269.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-01-20 21:13:45,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.56 ms. Allocated memory is still 306.2 MB. Free memory was 269.4 MB in the beginning and 267.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:13:45,718 INFO L168 Benchmark]: Boogie Preprocessor took 29.71 ms. Allocated memory is still 306.2 MB. Free memory was 267.7 MB in the beginning and 266.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:13:45,725 INFO L168 Benchmark]: RCFGBuilder took 561.47 ms. Allocated memory is still 306.2 MB. Free memory was 266.0 MB in the beginning and 282.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.0 GB. [2021-01-20 21:13:45,730 INFO L168 Benchmark]: TraceAbstraction took 8574.45 ms. Allocated memory was 306.2 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 282.7 MB in the beginning and 2.3 GB in the end (delta: -2.0 GB). Peak memory consumption was 417.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:13:45,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 306.2 MB. Free memory is still 277.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 716.68 ms. Allocated memory is still 306.2 MB. Free memory was 280.1 MB in the beginning and 269.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.56 ms. Allocated memory is still 306.2 MB. Free memory was 269.4 MB in the beginning and 267.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.71 ms. Allocated memory is still 306.2 MB. Free memory was 267.7 MB in the beginning and 266.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 561.47 ms. Allocated memory is still 306.2 MB. Free memory was 266.0 MB in the beginning and 282.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8574.45 ms. Allocated memory was 306.2 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 282.7 MB in the beginning and 2.3 GB in the end (delta: -2.0 GB). Peak memory consumption was 417.1 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 1064 SDtfs, 1928 SDslu, 3824 SDs, 0 SdLazy, 483 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47004occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 443 NumberOfCodeBlocks, 443 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 434 ConstructedInterpolants, 0 QuantifiedInterpolants, 56424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...