/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/safe025_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 21:22:33,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 21:22:33,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 21:22:33,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 21:22:33,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 21:22:33,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 21:22:33,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 21:22:33,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 21:22:33,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 21:22:33,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 21:22:33,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 21:22:33,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 21:22:33,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 21:22:33,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 21:22:33,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 21:22:33,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 21:22:33,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 21:22:33,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 21:22:33,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 21:22:33,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 21:22:33,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 21:22:33,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 21:22:33,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 21:22:33,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 21:22:33,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 21:22:33,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 21:22:33,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 21:22:33,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 21:22:33,289 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 21:22:33,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 21:22:33,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 21:22:33,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 21:22:33,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 21:22:33,343 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 21:22:33,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 21:22:33,344 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 21:22:33,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 21:22:33,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 21:22:33,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 21:22:33,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 21:22:33,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 21:22:33,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 21:22:33,347 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 21:22:33,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 21:22:33,347 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 21:22:33,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 21:22:33,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 21:22:33,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 21:22:33,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 21:22:33,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 21:22:33,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:22:33,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 21:22:33,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 21:22:33,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 21:22:33,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 21:22:33,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 21:22:33,350 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 21:22:33,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 21:22:33,351 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 21:22:33,351 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 21:22:33,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 21:22:33,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 21:22:33,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 21:22:33,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 21:22:33,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 21:22:33,768 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 21:22:33,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2021-01-20 21:22:33,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bef802b3/4a9851cd563648d8bb42864606666ca0/FLAGd8e5c0155 [2021-01-20 21:22:34,544 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 21:22:34,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2021-01-20 21:22:34,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bef802b3/4a9851cd563648d8bb42864606666ca0/FLAGd8e5c0155 [2021-01-20 21:22:34,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bef802b3/4a9851cd563648d8bb42864606666ca0 [2021-01-20 21:22:34,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 21:22:34,853 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 21:22:34,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 21:22:34,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 21:22:34,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 21:22:34,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:22:34" (1/1) ... [2021-01-20 21:22:34,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2845f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:34, skipping insertion in model container [2021-01-20 21:22:34,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:22:34" (1/1) ... [2021-01-20 21:22:34,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 21:22:34,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 21:22:35,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:22:35,281 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 21:22:35,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:22:35,492 INFO L208 MainTranslator]: Completed translation [2021-01-20 21:22:35,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:35 WrapperNode [2021-01-20 21:22:35,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 21:22:35,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 21:22:35,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 21:22:35,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 21:22:35,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:35" (1/1) ... [2021-01-20 21:22:35,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:35" (1/1) ... [2021-01-20 21:22:35,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 21:22:35,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 21:22:35,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 21:22:35,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 21:22:35,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:35" (1/1) ... [2021-01-20 21:22:35,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:35" (1/1) ... [2021-01-20 21:22:35,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:35" (1/1) ... [2021-01-20 21:22:35,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:35" (1/1) ... [2021-01-20 21:22:35,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:35" (1/1) ... [2021-01-20 21:22:35,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:35" (1/1) ... [2021-01-20 21:22:35,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:35" (1/1) ... [2021-01-20 21:22:35,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 21:22:35,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 21:22:35,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 21:22:35,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 21:22:35,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:35" (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 21:22:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 21:22:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 21:22:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 21:22:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 21:22:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 21:22:35,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 21:22:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 21:22:35,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 21:22:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 21:22:35,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 21:22:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 21:22:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 21:22:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 21:22:35,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 21:22:35,826 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 21:22:36,285 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 21:22:36,286 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 21:22:36,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:22:36 BoogieIcfgContainer [2021-01-20 21:22:36,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 21:22:36,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 21:22:36,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 21:22:36,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 21:22:36,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:22:34" (1/3) ... [2021-01-20 21:22:36,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798a4d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:22:36, skipping insertion in model container [2021-01-20 21:22:36,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:22:35" (2/3) ... [2021-01-20 21:22:36,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798a4d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:22:36, skipping insertion in model container [2021-01-20 21:22:36,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:22:36" (3/3) ... [2021-01-20 21:22:36,297 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2021-01-20 21:22:36,313 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 21:22:36,314 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 21:22:36,318 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 21:22:36,319 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 21:22:36,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,357 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,357 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,358 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,358 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,358 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,358 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,360 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,360 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,361 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,361 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,361 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,361 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,362 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,362 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,362 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,362 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,363 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,363 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,363 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,363 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,363 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,364 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,364 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,364 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,364 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,368 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,369 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,375 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,375 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,376 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,376 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,379 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,380 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,380 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,380 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:22:36,383 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 21:22:36,396 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 21:22:36,420 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 21:22:36,420 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 21:22:36,420 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 21:22:36,420 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 21:22:36,420 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 21:22:36,421 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 21:22:36,421 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 21:22:36,421 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 21:22:36,433 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2021-01-20 21:22:37,357 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 21:22:37,420 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 21:22:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-20 21:22:37,471 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:37,473 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 21:22:37,473 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:37,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:37,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1953454049, now seen corresponding path program 1 times [2021-01-20 21:22:37,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:37,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338630973] [2021-01-20 21:22:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:38,058 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 21:22:38,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338630973] [2021-01-20 21:22:38,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:38,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:22:38,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53093520] [2021-01-20 21:22:38,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:22:38,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:38,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:22:38,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:22:38,121 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 21:22:38,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:38,679 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2021-01-20 21:22:38,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:22:38,681 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 21:22:38,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:38,684 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 21:22:38,684 INFO L78 Accepts]: Start accepts. Automaton has 12200 states and 42464 transitions. Word has length 42 [2021-01-20 21:22:38,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:38,686 INFO L481 AbstractCegarLoop]: Abstraction has 12200 states and 42464 transitions. [2021-01-20 21:22:38,687 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 21:22:38,687 INFO L276 IsEmpty]: Start isEmpty. Operand 12200 states and 42464 transitions. [2021-01-20 21:22:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 21:22:38,722 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:38,722 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 21:22:38,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 21:22:38,723 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:38,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:38,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1502808140, now seen corresponding path program 1 times [2021-01-20 21:22:38,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:38,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106602677] [2021-01-20 21:22:38,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:38,908 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 21:22:38,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106602677] [2021-01-20 21:22:38,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:38,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:22:38,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155942683] [2021-01-20 21:22:38,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:22:38,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:38,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:22:38,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:22:38,913 INFO L87 Difference]: Start difference. First operand 12200 states and 42464 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:22:39,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:39,445 INFO L93 Difference]: Finished difference Result 14748 states and 51046 transitions. [2021-01-20 21:22:39,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:22:39,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-01-20 21:22:39,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:39,448 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 21:22:39,448 INFO L78 Accepts]: Start accepts. Automaton has 14748 states and 51046 transitions. Word has length 44 [2021-01-20 21:22:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:39,449 INFO L481 AbstractCegarLoop]: Abstraction has 14748 states and 51046 transitions. [2021-01-20 21:22:39,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:22:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 14748 states and 51046 transitions. [2021-01-20 21:22:39,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 21:22:39,471 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:39,471 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] [2021-01-20 21:22:39,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 21:22:39,472 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:39,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:39,473 INFO L82 PathProgramCache]: Analyzing trace with hash 2080522916, now seen corresponding path program 1 times [2021-01-20 21:22:39,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:39,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078445853] [2021-01-20 21:22:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:39,653 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 21:22:39,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078445853] [2021-01-20 21:22:39,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:39,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:22:39,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117636413] [2021-01-20 21:22:39,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:22:39,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:39,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:22:39,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:22:39,657 INFO L87 Difference]: Start difference. First operand 14748 states and 51046 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:22:40,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:40,171 INFO L93 Difference]: Finished difference Result 22364 states and 76880 transitions. [2021-01-20 21:22:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:22:40,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-01-20 21:22:40,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:40,173 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 21:22:40,173 INFO L78 Accepts]: Start accepts. Automaton has 22364 states and 76880 transitions. Word has length 45 [2021-01-20 21:22:40,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:40,174 INFO L481 AbstractCegarLoop]: Abstraction has 22364 states and 76880 transitions. [2021-01-20 21:22:40,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:22:40,174 INFO L276 IsEmpty]: Start isEmpty. Operand 22364 states and 76880 transitions. [2021-01-20 21:22:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 21:22:40,212 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:40,212 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 21:22:40,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 21:22:40,213 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:40,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:40,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1485652643, now seen corresponding path program 1 times [2021-01-20 21:22:40,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:40,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957136184] [2021-01-20 21:22:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:40,371 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 21:22:40,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957136184] [2021-01-20 21:22:40,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:40,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:22:40,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502208607] [2021-01-20 21:22:40,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:22:40,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:40,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:22:40,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:22:40,374 INFO L87 Difference]: Start difference. First operand 22364 states and 76880 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) [2021-01-20 21:22:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:40,998 INFO L93 Difference]: Finished difference Result 30624 states and 104848 transitions. [2021-01-20 21:22:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:22:40,998 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 [2021-01-20 21:22:40,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:40,999 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-01-20 21:22:40,999 INFO L78 Accepts]: Start accepts. Automaton has 30624 states and 104848 transitions. Word has length 47 [2021-01-20 21:22:41,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:41,000 INFO L481 AbstractCegarLoop]: Abstraction has 30624 states and 104848 transitions. [2021-01-20 21:22:41,000 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) [2021-01-20 21:22:41,001 INFO L276 IsEmpty]: Start isEmpty. Operand 30624 states and 104848 transitions. [2021-01-20 21:22:41,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 21:22:41,128 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:41,134 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 21:22:41,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 21:22:41,135 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:41,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1266801623, now seen corresponding path program 2 times [2021-01-20 21:22:41,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:41,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755228391] [2021-01-20 21:22:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:41,307 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 21:22:41,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755228391] [2021-01-20 21:22:41,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:41,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:22:41,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355004683] [2021-01-20 21:22:41,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:22:41,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:41,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:22:41,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:22:41,311 INFO L87 Difference]: Start difference. First operand 30624 states and 104848 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 21:22:41,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:41,678 INFO L93 Difference]: Finished difference Result 24078 states and 79960 transitions. [2021-01-20 21:22:41,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 21:22:41,679 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 21:22:41,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:41,680 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 21:22:41,680 INFO L78 Accepts]: Start accepts. Automaton has 24078 states and 79960 transitions. Word has length 47 [2021-01-20 21:22:41,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:41,681 INFO L481 AbstractCegarLoop]: Abstraction has 24078 states and 79960 transitions. [2021-01-20 21:22:41,681 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 21:22:41,682 INFO L276 IsEmpty]: Start isEmpty. Operand 24078 states and 79960 transitions. [2021-01-20 21:22:41,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 21:22:41,712 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:41,712 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] [2021-01-20 21:22:41,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 21:22:41,713 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:41,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:41,714 INFO L82 PathProgramCache]: Analyzing trace with hash -2035932160, now seen corresponding path program 1 times [2021-01-20 21:22:41,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:41,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549722780] [2021-01-20 21:22:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:41,837 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 21:22:41,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549722780] [2021-01-20 21:22:41,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:41,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:22:41,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891379624] [2021-01-20 21:22:41,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:22:41,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:41,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:22:41,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:22:41,840 INFO L87 Difference]: Start difference. First operand 24078 states and 79960 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:22:42,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:42,396 INFO L93 Difference]: Finished difference Result 13368 states and 43072 transitions. [2021-01-20 21:22:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:22:42,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-20 21:22:42,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:42,403 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-20 21:22:42,404 INFO L78 Accepts]: Start accepts. Automaton has 13368 states and 43072 transitions. Word has length 48 [2021-01-20 21:22:42,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:42,406 INFO L481 AbstractCegarLoop]: Abstraction has 13368 states and 43072 transitions. [2021-01-20 21:22:42,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:22:42,407 INFO L276 IsEmpty]: Start isEmpty. Operand 13368 states and 43072 transitions. [2021-01-20 21:22:42,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 21:22:42,435 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:42,435 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 21:22:42,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 21:22:42,435 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:42,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:42,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1922996831, now seen corresponding path program 1 times [2021-01-20 21:22:42,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:42,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348329997] [2021-01-20 21:22:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:42,578 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 21:22:42,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348329997] [2021-01-20 21:22:42,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:42,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 21:22:42,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869008977] [2021-01-20 21:22:42,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 21:22:42,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:42,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 21:22:42,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 21:22:42,581 INFO L87 Difference]: Start difference. First operand 13368 states and 43072 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 21:22:42,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:42,975 INFO L93 Difference]: Finished difference Result 8418 states and 27094 transitions. [2021-01-20 21:22:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 21:22:42,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 21:22:42,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:42,977 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 21:22:42,977 INFO L78 Accepts]: Start accepts. Automaton has 8418 states and 27094 transitions. Word has length 50 [2021-01-20 21:22:42,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:42,978 INFO L481 AbstractCegarLoop]: Abstraction has 8418 states and 27094 transitions. [2021-01-20 21:22:42,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 21:22:42,978 INFO L276 IsEmpty]: Start isEmpty. Operand 8418 states and 27094 transitions. [2021-01-20 21:22:43,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 21:22:43,058 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:43,059 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 21:22:43,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 21:22:43,060 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:43,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:43,061 INFO L82 PathProgramCache]: Analyzing trace with hash 2028376861, now seen corresponding path program 1 times [2021-01-20 21:22:43,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:43,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724242705] [2021-01-20 21:22:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:43,175 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 21:22:43,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724242705] [2021-01-20 21:22:43,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:43,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:22:43,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424925866] [2021-01-20 21:22:43,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:22:43,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:43,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:22:43,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:22:43,177 INFO L87 Difference]: Start difference. First operand 8418 states and 27094 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 21:22:43,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:43,343 INFO L93 Difference]: Finished difference Result 13128 states and 41764 transitions. [2021-01-20 21:22:43,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:22:43,343 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 21:22:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:43,344 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:22:43,344 INFO L78 Accepts]: Start accepts. Automaton has 13128 states and 41764 transitions. Word has length 54 [2021-01-20 21:22:43,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:43,345 INFO L481 AbstractCegarLoop]: Abstraction has 13128 states and 41764 transitions. [2021-01-20 21:22:43,345 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 21:22:43,345 INFO L276 IsEmpty]: Start isEmpty. Operand 13128 states and 41764 transitions. [2021-01-20 21:22:43,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 21:22:43,371 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:43,371 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 21:22:43,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 21:22:43,372 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:43,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:43,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1950903709, now seen corresponding path program 2 times [2021-01-20 21:22:43,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:43,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438752005] [2021-01-20 21:22:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:43,520 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 21:22:43,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438752005] [2021-01-20 21:22:43,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:43,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:22:43,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146485284] [2021-01-20 21:22:43,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:22:43,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:43,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:22:43,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:22:43,527 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 21:22:43,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:43,896 INFO L93 Difference]: Finished difference Result 20412 states and 63944 transitions. [2021-01-20 21:22:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:22:43,897 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 21:22:43,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:43,898 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 21:22:43,898 INFO L78 Accepts]: Start accepts. Automaton has 20412 states and 63944 transitions. Word has length 54 [2021-01-20 21:22:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:43,898 INFO L481 AbstractCegarLoop]: Abstraction has 20412 states and 63944 transitions. [2021-01-20 21:22:43,899 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 21:22:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand 20412 states and 63944 transitions. [2021-01-20 21:22:43,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 21:22:43,940 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:22:43,940 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 21:22:43,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-20 21:22:43,941 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:22:43,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:22:43,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1622631359, now seen corresponding path program 3 times [2021-01-20 21:22:43,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:22:43,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115781023] [2021-01-20 21:22:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:22:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:22:44,050 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 21:22:44,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115781023] [2021-01-20 21:22:44,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:22:44,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:22:44,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968561719] [2021-01-20 21:22:44,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:22:44,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:22:44,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:22:44,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:22:44,053 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 21:22:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:22:44,430 INFO L93 Difference]: Finished difference Result 26544 states and 82880 transitions. [2021-01-20 21:22:44,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-20 21:22:44,430 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 21:22:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:22:44,431 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:22:44,431 INFO L78 Accepts]: Start accepts. Automaton has 26544 states and 82880 transitions. Word has length 54 [2021-01-20 21:22:44,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:22:44,432 INFO L481 AbstractCegarLoop]: Abstraction has 26544 states and 82880 transitions. [2021-01-20 21:22:44,432 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 21:22:44,432 INFO L276 IsEmpty]: Start isEmpty. Operand 26544 states and 82880 transitions. [2021-01-20 21:22:44,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 21:22:44,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-20 21:22:44,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:22:44 BasicIcfg [2021-01-20 21:22:44,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 21:22:44,486 INFO L168 Benchmark]: Toolchain (without parser) took 9632.55 ms. Allocated memory was 302.0 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 276.7 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 355.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:22:44,486 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:22:44,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.43 ms. Allocated memory is still 302.0 MB. Free memory was 276.4 MB in the beginning and 245.0 MB in the end (delta: 31.5 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. [2021-01-20 21:22:44,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.40 ms. Allocated memory is still 302.0 MB. Free memory was 244.7 MB in the beginning and 242.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:22:44,495 INFO L168 Benchmark]: Boogie Preprocessor took 115.91 ms. Allocated memory is still 302.0 MB. Free memory was 242.9 MB in the beginning and 283.7 MB in the end (delta: -40.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.0 GB. [2021-01-20 21:22:44,498 INFO L168 Benchmark]: RCFGBuilder took 561.93 ms. Allocated memory is still 302.0 MB. Free memory was 283.7 MB in the beginning and 261.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-01-20 21:22:44,504 INFO L168 Benchmark]: TraceAbstraction took 8192.79 ms. Allocated memory was 302.0 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 260.6 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 338.2 MB. Max. memory is 16.0 GB. [2021-01-20 21:22:44,509 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 639.43 ms. Allocated memory is still 302.0 MB. Free memory was 276.4 MB in the beginning and 245.0 MB in the end (delta: 31.5 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 107.40 ms. Allocated memory is still 302.0 MB. Free memory was 244.7 MB in the beginning and 242.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 115.91 ms. Allocated memory is still 302.0 MB. Free memory was 242.9 MB in the beginning and 283.7 MB in the end (delta: -40.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.0 GB. * RCFGBuilder took 561.93 ms. Allocated memory is still 302.0 MB. Free memory was 283.7 MB in the beginning and 261.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8192.79 ms. Allocated memory was 302.0 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 260.6 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 338.2 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: 8.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 1187 SDtfs, 1949 SDslu, 4149 SDs, 0 SdLazy, 486 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30624occurred 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, 1.1s InterpolantComputationTime, 485 NumberOfCodeBlocks, 485 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 475 ConstructedInterpolants, 0 QuantifiedInterpolants, 57217 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...