/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_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 23:48:34,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 23:48:34,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 23:48:34,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 23:48:34,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 23:48:34,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 23:48:34,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 23:48:34,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 23:48:34,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 23:48:34,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 23:48:34,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 23:48:34,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 23:48:34,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 23:48:34,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 23:48:34,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 23:48:34,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 23:48:34,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 23:48:34,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 23:48:34,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 23:48:34,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 23:48:34,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 23:48:34,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 23:48:34,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 23:48:34,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 23:48:34,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-17 23:48:34,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 23:48:34,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 23:48:34,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 23:48:34,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 23:48:34,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 23:48:34,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 23:48:34,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 23:48:34,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 23:48:34,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 23:48:34,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 23:48:34,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 23:48:34,304 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 [2020-12-17 23:48:34,351 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 23:48:34,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 23:48:34,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 23:48:34,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 23:48:34,357 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 23:48:34,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 23:48:34,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 23:48:34,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 23:48:34,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 23:48:34,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 23:48:34,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 23:48:34,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 23:48:34,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 23:48:34,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 23:48:34,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 23:48:34,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 23:48:34,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 23:48:34,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 23:48:34,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 23:48:34,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 23:48:34,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 23:48:34,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:48:34,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 23:48:34,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 23:48:34,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 23:48:34,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 23:48:34,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 23:48:34,363 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 23:48:34,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 23:48:34,364 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-17 23:48:34,364 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 23:48:34,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 23:48:34,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 23:48:34,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 23:48:34,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 23:48:34,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 23:48:34,830 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 23:48:34,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-12-17 23:48:34,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2241cea5/2b560bbc321e460896df29b3688b34c6/FLAG95a4bbb7c [2020-12-17 23:48:35,605 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 23:48:35,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-12-17 23:48:35,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2241cea5/2b560bbc321e460896df29b3688b34c6/FLAG95a4bbb7c [2020-12-17 23:48:35,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2241cea5/2b560bbc321e460896df29b3688b34c6 [2020-12-17 23:48:35,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 23:48:35,906 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 23:48:35,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 23:48:35,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 23:48:35,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 23:48:35,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:48:35" (1/1) ... [2020-12-17 23:48:35,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e51fecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:35, skipping insertion in model container [2020-12-17 23:48:35,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:48:35" (1/1) ... [2020-12-17 23:48:35,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 23:48:36,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 23:48:36,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:48:36,538 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 23:48:36,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:48:36,747 INFO L208 MainTranslator]: Completed translation [2020-12-17 23:48:36,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:36 WrapperNode [2020-12-17 23:48:36,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 23:48:36,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 23:48:36,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 23:48:36,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 23:48:36,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:36" (1/1) ... [2020-12-17 23:48:36,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:36" (1/1) ... [2020-12-17 23:48:36,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 23:48:36,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 23:48:36,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 23:48:36,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 23:48:36,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:36" (1/1) ... [2020-12-17 23:48:36,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:36" (1/1) ... [2020-12-17 23:48:36,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:36" (1/1) ... [2020-12-17 23:48:36,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:36" (1/1) ... [2020-12-17 23:48:36,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:36" (1/1) ... [2020-12-17 23:48:36,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:36" (1/1) ... [2020-12-17 23:48:36,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:36" (1/1) ... [2020-12-17 23:48:36,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 23:48:36,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 23:48:36,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 23:48:36,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 23:48:36,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:36" (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 [2020-12-17 23:48:37,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 23:48:37,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-17 23:48:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 23:48:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 23:48:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-17 23:48:37,012 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-17 23:48:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-17 23:48:37,013 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-17 23:48:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-17 23:48:37,013 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-17 23:48:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 23:48:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-17 23:48:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 23:48:37,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 23:48:37,016 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-17 23:48:37,360 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 23:48:37,361 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-17 23:48:37,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:48:37 BoogieIcfgContainer [2020-12-17 23:48:37,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 23:48:37,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 23:48:37,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 23:48:37,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 23:48:37,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:48:35" (1/3) ... [2020-12-17 23:48:37,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a254a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:48:37, skipping insertion in model container [2020-12-17 23:48:37,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:36" (2/3) ... [2020-12-17 23:48:37,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a254a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:48:37, skipping insertion in model container [2020-12-17 23:48:37,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:48:37" (3/3) ... [2020-12-17 23:48:37,373 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-12-17 23:48:37,389 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 23:48:37,389 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 23:48:37,394 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-17 23:48:37,395 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 23:48:37,448 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,448 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,449 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,449 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,449 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,450 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,450 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,450 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,450 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,451 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,452 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,452 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,453 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,453 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,453 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,453 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,453 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,457 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,458 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,458 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,458 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,459 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,459 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,459 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,460 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,461 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,461 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,462 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,462 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,472 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,473 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,474 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,474 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,483 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,483 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,487 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,487 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:37,489 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-17 23:48:37,503 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-17 23:48:37,526 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 23:48:37,527 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 23:48:37,527 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 23:48:37,527 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 23:48:37,527 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 23:48:37,527 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 23:48:37,527 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 23:48:37,528 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 23:48:37,540 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-12-17 23:48:38,326 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) [2020-12-17 23:48:38,366 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) [2020-12-17 23:48:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-17 23:48:38,417 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:38,419 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] [2020-12-17 23:48:38,419 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:38,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:38,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1557079206, now seen corresponding path program 1 times [2020-12-17 23:48:38,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:38,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275216138] [2020-12-17 23:48:38,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:39,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275216138] [2020-12-17 23:48:39,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:39,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:48:39,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689415160] [2020-12-17 23:48:39,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:48:39,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:39,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:48:39,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:48:39,123 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) [2020-12-17 23:48:39,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:39,642 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2020-12-17 23:48:39,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:48:39,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-12-17 23:48:39,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:39,648 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:48:39,648 INFO L78 Accepts]: Start accepts. Automaton has 12200 states and 42464 transitions. Word has length 42 [2020-12-17 23:48:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:39,650 INFO L481 AbstractCegarLoop]: Abstraction has 12200 states and 42464 transitions. [2020-12-17 23:48:39,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:48:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 12200 states and 42464 transitions. [2020-12-17 23:48:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-17 23:48:39,678 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:39,678 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] [2020-12-17 23:48:39,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 23:48:39,679 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:39,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:39,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1581474041, now seen corresponding path program 1 times [2020-12-17 23:48:39,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:39,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155140739] [2020-12-17 23:48:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:39,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155140739] [2020-12-17 23:48:39,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:39,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:39,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470165719] [2020-12-17 23:48:39,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:39,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:39,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:39,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:39,950 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) [2020-12-17 23:48:40,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:40,486 INFO L93 Difference]: Finished difference Result 16820 states and 57820 transitions. [2020-12-17 23:48:40,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:48:40,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2020-12-17 23:48:40,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:40,490 INFO L763 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 [2020-12-17 23:48:40,490 INFO L78 Accepts]: Start accepts. Automaton has 16820 states and 57820 transitions. Word has length 44 [2020-12-17 23:48:40,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:40,491 INFO L481 AbstractCegarLoop]: Abstraction has 16820 states and 57820 transitions. [2020-12-17 23:48:40,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:48:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 16820 states and 57820 transitions. [2020-12-17 23:48:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-17 23:48:40,521 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:40,521 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] [2020-12-17 23:48:40,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 23:48:40,521 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:40,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:40,524 INFO L82 PathProgramCache]: Analyzing trace with hash 674177462, now seen corresponding path program 1 times [2020-12-17 23:48:40,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:40,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920445106] [2020-12-17 23:48:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:40,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920445106] [2020-12-17 23:48:40,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:40,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:48:40,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602087079] [2020-12-17 23:48:40,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:48:40,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:40,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:48:40,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:48:40,695 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) [2020-12-17 23:48:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:41,440 INFO L93 Difference]: Finished difference Result 25340 states and 86536 transitions. [2020-12-17 23:48:41,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:48:41,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-12-17 23:48:41,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:41,441 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:48:41,442 INFO L78 Accepts]: Start accepts. Automaton has 25340 states and 86536 transitions. Word has length 47 [2020-12-17 23:48:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:41,442 INFO L481 AbstractCegarLoop]: Abstraction has 25340 states and 86536 transitions. [2020-12-17 23:48:41,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:48:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 25340 states and 86536 transitions. [2020-12-17 23:48:41,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-17 23:48:41,504 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:41,505 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] [2020-12-17 23:48:41,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-17 23:48:41,505 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:41,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:41,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1902429865, now seen corresponding path program 1 times [2020-12-17 23:48:41,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:41,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497067048] [2020-12-17 23:48:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:41,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497067048] [2020-12-17 23:48:41,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:41,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:41,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421294088] [2020-12-17 23:48:41,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:41,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:41,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:41,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:41,716 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) [2020-12-17 23:48:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:42,516 INFO L93 Difference]: Finished difference Result 47004 states and 158862 transitions. [2020-12-17 23:48:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-17 23:48:42,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2020-12-17 23:48:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:42,517 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-12-17 23:48:42,517 INFO L78 Accepts]: Start accepts. Automaton has 47004 states and 158862 transitions. Word has length 49 [2020-12-17 23:48:42,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:42,518 INFO L481 AbstractCegarLoop]: Abstraction has 47004 states and 158862 transitions. [2020-12-17 23:48:42,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:48:42,518 INFO L276 IsEmpty]: Start isEmpty. Operand 47004 states and 158862 transitions. [2020-12-17 23:48:42,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-17 23:48:42,631 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:42,631 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] [2020-12-17 23:48:42,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-17 23:48:42,631 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:42,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:42,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1518373285, now seen corresponding path program 1 times [2020-12-17 23:48:42,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:42,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441545570] [2020-12-17 23:48:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:42,856 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 5 [2020-12-17 23:48:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:42,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441545570] [2020-12-17 23:48:42,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:42,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:48:42,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194218931] [2020-12-17 23:48:42,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:48:42,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:42,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:48:42,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:48:42,866 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) [2020-12-17 23:48:43,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:43,324 INFO L93 Difference]: Finished difference Result 34008 states and 112147 transitions. [2020-12-17 23:48:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-17 23:48:43,324 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 [2020-12-17 23:48:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:43,325 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:48:43,325 INFO L78 Accepts]: Start accepts. Automaton has 34008 states and 112147 transitions. Word has length 50 [2020-12-17 23:48:43,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:43,326 INFO L481 AbstractCegarLoop]: Abstraction has 34008 states and 112147 transitions. [2020-12-17 23:48:43,326 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) [2020-12-17 23:48:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 34008 states and 112147 transitions. [2020-12-17 23:48:43,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-17 23:48:43,406 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:43,407 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] [2020-12-17 23:48:43,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-17 23:48:43,407 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:43,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:43,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1388621878, now seen corresponding path program 1 times [2020-12-17 23:48:43,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:43,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872990256] [2020-12-17 23:48:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:43,645 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2020-12-17 23:48:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:43,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872990256] [2020-12-17 23:48:43,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:43,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:43,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881987759] [2020-12-17 23:48:43,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:43,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:43,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:43,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:43,680 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) [2020-12-17 23:48:43,887 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-17 23:48:44,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:44,126 INFO L93 Difference]: Finished difference Result 20580 states and 65884 transitions. [2020-12-17 23:48:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:48:44,127 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 [2020-12-17 23:48:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:44,128 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-17 23:48:44,128 INFO L78 Accepts]: Start accepts. Automaton has 20580 states and 65884 transitions. Word has length 51 [2020-12-17 23:48:44,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:44,129 INFO L481 AbstractCegarLoop]: Abstraction has 20580 states and 65884 transitions. [2020-12-17 23:48:44,129 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) [2020-12-17 23:48:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 20580 states and 65884 transitions. [2020-12-17 23:48:44,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-17 23:48:44,260 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:44,260 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] [2020-12-17 23:48:44,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-17 23:48:44,261 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:44,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:44,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1603073441, now seen corresponding path program 1 times [2020-12-17 23:48:44,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:44,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085159874] [2020-12-17 23:48:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:44,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085159874] [2020-12-17 23:48:44,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:44,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-17 23:48:44,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851419336] [2020-12-17 23:48:44,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-17 23:48:44,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:44,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-17 23:48:44,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-17 23:48:44,429 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) [2020-12-17 23:48:44,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:44,797 INFO L93 Difference]: Finished difference Result 13128 states and 41764 transitions. [2020-12-17 23:48:44,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-17 23:48:44,798 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 [2020-12-17 23:48:44,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:44,799 INFO L763 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 [2020-12-17 23:48:44,799 INFO L78 Accepts]: Start accepts. Automaton has 13128 states and 41764 transitions. Word has length 52 [2020-12-17 23:48:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:44,800 INFO L481 AbstractCegarLoop]: Abstraction has 13128 states and 41764 transitions. [2020-12-17 23:48:44,801 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) [2020-12-17 23:48:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 13128 states and 41764 transitions. [2020-12-17 23:48:44,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-17 23:48:44,904 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:44,904 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] [2020-12-17 23:48:44,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-17 23:48:44,905 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:44,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:44,907 INFO L82 PathProgramCache]: Analyzing trace with hash -986251264, now seen corresponding path program 1 times [2020-12-17 23:48:44,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:44,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38262817] [2020-12-17 23:48:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:45,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38262817] [2020-12-17 23:48:45,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:45,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:45,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526179688] [2020-12-17 23:48:45,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:45,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:45,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:45,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:45,090 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) [2020-12-17 23:48:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:45,320 INFO L93 Difference]: Finished difference Result 20412 states and 63944 transitions. [2020-12-17 23:48:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-17 23:48:45,321 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 [2020-12-17 23:48:45,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:45,321 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:48:45,322 INFO L78 Accepts]: Start accepts. Automaton has 20412 states and 63944 transitions. Word has length 54 [2020-12-17 23:48:45,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:45,322 INFO L481 AbstractCegarLoop]: Abstraction has 20412 states and 63944 transitions. [2020-12-17 23:48:45,322 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) [2020-12-17 23:48:45,322 INFO L276 IsEmpty]: Start isEmpty. Operand 20412 states and 63944 transitions. [2020-12-17 23:48:45,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-17 23:48:45,365 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:45,365 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] [2020-12-17 23:48:45,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-17 23:48:45,365 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:45,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:45,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1457594808, now seen corresponding path program 2 times [2020-12-17 23:48:45,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:45,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814476013] [2020-12-17 23:48:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:45,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814476013] [2020-12-17 23:48:45,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:45,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:45,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884220579] [2020-12-17 23:48:45,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:45,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:45,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:45,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:45,499 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) [2020-12-17 23:48:45,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:45,840 INFO L93 Difference]: Finished difference Result 26544 states and 82880 transitions. [2020-12-17 23:48:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-17 23:48:45,840 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 [2020-12-17 23:48:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:45,841 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:48:45,841 INFO L78 Accepts]: Start accepts. Automaton has 26544 states and 82880 transitions. Word has length 54 [2020-12-17 23:48:45,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:45,842 INFO L481 AbstractCegarLoop]: Abstraction has 26544 states and 82880 transitions. [2020-12-17 23:48:45,842 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) [2020-12-17 23:48:45,842 INFO L276 IsEmpty]: Start isEmpty. Operand 26544 states and 82880 transitions. [2020-12-17 23:48:45,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-17 23:48:45,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-17 23:48:45,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:48:45 BasicIcfg [2020-12-17 23:48:45,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-17 23:48:45,892 INFO L168 Benchmark]: Toolchain (without parser) took 9986.04 ms. Allocated memory was 302.0 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 276.3 MB in the beginning and 2.6 GB in the end (delta: -2.3 GB). Peak memory consumption was 398.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:45,892 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 302.0 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:48:45,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 838.29 ms. Allocated memory is still 302.0 MB. Free memory was 276.2 MB in the beginning and 245.3 MB in the end (delta: 30.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:45,894 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.87 ms. Allocated memory is still 302.0 MB. Free memory was 245.3 MB in the beginning and 283.4 MB in the end (delta: -38.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:45,895 INFO L168 Benchmark]: Boogie Preprocessor took 54.02 ms. Allocated memory is still 302.0 MB. Free memory was 283.4 MB in the beginning and 282.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:48:45,895 INFO L168 Benchmark]: RCFGBuilder took 433.73 ms. Allocated memory is still 302.0 MB. Free memory was 282.4 MB in the beginning and 259.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:45,896 INFO L168 Benchmark]: TraceAbstraction took 8525.01 ms. Allocated memory was 302.0 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 259.3 MB in the beginning and 2.6 GB in the end (delta: -2.3 GB). Peak memory consumption was 383.0 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:45,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 302.0 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 838.29 ms. Allocated memory is still 302.0 MB. Free memory was 276.2 MB in the beginning and 245.3 MB in the end (delta: 30.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 123.87 ms. Allocated memory is still 302.0 MB. Free memory was 245.3 MB in the beginning and 283.4 MB in the end (delta: -38.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 54.02 ms. Allocated memory is still 302.0 MB. Free memory was 283.4 MB in the beginning and 282.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 433.73 ms. Allocated memory is still 302.0 MB. Free memory was 282.4 MB in the beginning and 259.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8525.01 ms. Allocated memory was 302.0 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 259.3 MB in the beginning and 2.6 GB in the end (delta: -2.3 GB). Peak memory consumption was 383.0 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: 8.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, 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, 2.1s 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, 1.5s 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...