/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-6f57305 [2021-01-26 17:27:23,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-26 17:27:23,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-26 17:27:23,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-26 17:27:23,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-26 17:27:23,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-26 17:27:23,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-26 17:27:23,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-26 17:27:23,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-26 17:27:23,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-26 17:27:23,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-26 17:27:23,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-26 17:27:23,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-26 17:27:23,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-26 17:27:23,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-26 17:27:23,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-26 17:27:23,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-26 17:27:23,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-26 17:27:23,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-26 17:27:23,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-26 17:27:23,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-26 17:27:23,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-26 17:27:23,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-26 17:27:23,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-26 17:27:23,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-26 17:27:23,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-26 17:27:23,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-26 17:27:23,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-26 17:27:23,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-26 17:27:23,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-26 17:27:23,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-26 17:27:23,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-26 17:27:23,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-26 17:27:23,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-26 17:27:23,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-26 17:27:23,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-26 17:27:23,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-01-26 17:27:23,343 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-26 17:27:23,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-26 17:27:23,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-26 17:27:23,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-26 17:27:23,349 INFO L138 SettingsManager]: * Use SBE=true [2021-01-26 17:27:23,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-26 17:27:23,349 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-26 17:27:23,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-26 17:27:23,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-26 17:27:23,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-26 17:27:23,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-26 17:27:23,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-26 17:27:23,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-26 17:27:23,352 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-26 17:27:23,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-26 17:27:23,353 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-26 17:27:23,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-26 17:27:23,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-26 17:27:23,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-26 17:27:23,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-26 17:27:23,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-26 17:27:23,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 17:27:23,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-26 17:27:23,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-26 17:27:23,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-26 17:27:23,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-26 17:27:23,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-26 17:27:23,356 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-26 17:27:23,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-26 17:27:23,357 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-26 17:27:23,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-26 17:27:23,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-26 17:27:23,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-26 17:27:23,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-26 17:27:23,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-26 17:27:23,820 INFO L275 PluginConnector]: CDTParser initialized [2021-01-26 17:27:23,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2021-01-26 17:27:23,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d8df032/c87925056f954519844ceca5b17eb13d/FLAG67cd214b7 [2021-01-26 17:27:24,643 INFO L306 CDTParser]: Found 1 translation units. [2021-01-26 17:27:24,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2021-01-26 17:27:24,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d8df032/c87925056f954519844ceca5b17eb13d/FLAG67cd214b7 [2021-01-26 17:27:24,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d8df032/c87925056f954519844ceca5b17eb13d [2021-01-26 17:27:24,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-26 17:27:24,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-26 17:27:24,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-26 17:27:24,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-26 17:27:24,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-26 17:27:24,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:27:24" (1/1) ... [2021-01-26 17:27:24,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa03089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:24, skipping insertion in model container [2021-01-26 17:27:24,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:27:24" (1/1) ... [2021-01-26 17:27:24,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-26 17:27:24,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-26 17:27:25,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:27:25,503 INFO L203 MainTranslator]: Completed pre-run [2021-01-26 17:27:25,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:27:25,671 INFO L208 MainTranslator]: Completed translation [2021-01-26 17:27:25,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:25 WrapperNode [2021-01-26 17:27:25,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-26 17:27:25,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-26 17:27:25,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-26 17:27:25,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-26 17:27:25,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:25" (1/1) ... [2021-01-26 17:27:25,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:25" (1/1) ... [2021-01-26 17:27:25,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-26 17:27:25,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-26 17:27:25,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-26 17:27:25,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-26 17:27:25,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:25" (1/1) ... [2021-01-26 17:27:25,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:25" (1/1) ... [2021-01-26 17:27:25,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:25" (1/1) ... [2021-01-26 17:27:25,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:25" (1/1) ... [2021-01-26 17:27:25,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:25" (1/1) ... [2021-01-26 17:27:25,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:25" (1/1) ... [2021-01-26 17:27:25,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:25" (1/1) ... [2021-01-26 17:27:25,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-26 17:27:25,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-26 17:27:25,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-26 17:27:25,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-26 17:27:25,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:25" (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 [2021-01-26 17:27:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-26 17:27:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-26 17:27:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-26 17:27:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-26 17:27:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-26 17:27:25,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-26 17:27:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-26 17:27:25,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-26 17:27:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-26 17:27:25,850 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-26 17:27:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-26 17:27:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-26 17:27:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-26 17:27:25,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-26 17:27:25,853 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-26 17:27:26,415 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-26 17:27:26,415 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-26 17:27:26,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:27:26 BoogieIcfgContainer [2021-01-26 17:27:26,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-26 17:27:26,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-26 17:27:26,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-26 17:27:26,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-26 17:27:26,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 05:27:24" (1/3) ... [2021-01-26 17:27:26,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f642aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:27:26, skipping insertion in model container [2021-01-26 17:27:26,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:25" (2/3) ... [2021-01-26 17:27:26,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f642aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:27:26, skipping insertion in model container [2021-01-26 17:27:26,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:27:26" (3/3) ... [2021-01-26 17:27:26,428 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2021-01-26 17:27:26,444 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-26 17:27:26,444 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-26 17:27:26,448 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-26 17:27:26,449 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-26 17:27:26,484 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,484 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,485 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,485 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,485 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,485 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,485 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,486 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,486 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,486 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,487 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,487 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,488 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,488 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,488 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,488 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,488 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,488 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,489 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,489 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,489 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,489 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,490 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,490 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,490 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,490 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,491 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,491 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,491 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,491 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,491 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,492 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,492 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,492 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,492 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,495 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,495 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,502 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,502 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,502 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:26,509 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-26 17:27:26,523 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-26 17:27:26,547 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-26 17:27:26,547 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-26 17:27:26,547 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-26 17:27:26,547 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-26 17:27:26,548 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-26 17:27:26,548 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-26 17:27:26,548 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-26 17:27:26,548 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-26 17:27:26,561 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2021-01-26 17:27:27,472 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) [2021-01-26 17:27:27,528 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) [2021-01-26 17:27:27,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-26 17:27:27,577 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:27,578 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] [2021-01-26 17:27:27,579 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:27,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:27,586 INFO L82 PathProgramCache]: Analyzing trace with hash 407701414, now seen corresponding path program 1 times [2021-01-26 17:27:27,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:27,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287705519] [2021-01-26 17:27:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:28,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287705519] [2021-01-26 17:27:28,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:28,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:28,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931255619] [2021-01-26 17:27:28,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:28,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:28,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:28,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:28,277 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) [2021-01-26 17:27:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:28,742 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2021-01-26 17:27:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:28,745 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 [2021-01-26 17:27:28,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:28,806 INFO L225 Difference]: With dead ends: 12200 [2021-01-26 17:27:28,806 INFO L226 Difference]: Without dead ends: 4605 [2021-01-26 17:27:28,808 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:27:28,809 INFO L78 Accepts]: Start accepts. Automaton has 4605 states. Word has length 42 [2021-01-26 17:27:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:28,811 INFO L481 AbstractCegarLoop]: Abstraction has 4605 states. [2021-01-26 17:27:28,811 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) [2021-01-26 17:27:28,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states. [2021-01-26 17:27:28,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-26 17:27:28,829 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:28,829 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] [2021-01-26 17:27:28,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-26 17:27:28,830 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:28,831 INFO L82 PathProgramCache]: Analyzing trace with hash 410392453, now seen corresponding path program 1 times [2021-01-26 17:27:28,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:28,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072307687] [2021-01-26 17:27:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:29,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072307687] [2021-01-26 17:27:29,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:29,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:29,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214573215] [2021-01-26 17:27:29,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:29,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:29,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:29,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:29,158 INFO L87 Difference]: Start difference. First operand 4605 states. 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) [2021-01-26 17:27:29,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:29,489 INFO L93 Difference]: Finished difference Result 5473 states and 18505 transitions. [2021-01-26 17:27:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:29,491 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 [2021-01-26 17:27:29,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:29,530 INFO L225 Difference]: With dead ends: 5473 [2021-01-26 17:27:29,531 INFO L226 Difference]: Without dead ends: 4493 [2021-01-26 17:27:29,532 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:27:29,532 INFO L78 Accepts]: Start accepts. Automaton has 4493 states. Word has length 44 [2021-01-26 17:27:29,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:29,532 INFO L481 AbstractCegarLoop]: Abstraction has 4493 states. [2021-01-26 17:27:29,533 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) [2021-01-26 17:27:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4493 states. [2021-01-26 17:27:29,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-26 17:27:29,546 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:29,547 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] [2021-01-26 17:27:29,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-26 17:27:29,547 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:29,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:29,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1509155095, now seen corresponding path program 1 times [2021-01-26 17:27:29,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:29,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265540224] [2021-01-26 17:27:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:29,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265540224] [2021-01-26 17:27:29,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:29,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:29,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111835745] [2021-01-26 17:27:29,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:29,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:29,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:29,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:29,789 INFO L87 Difference]: Start difference. First operand 4493 states. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2021-01-26 17:27:30,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:30,172 INFO L93 Difference]: Finished difference Result 5605 states and 18839 transitions. [2021-01-26 17:27:30,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:27:30,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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 [2021-01-26 17:27:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:30,198 INFO L225 Difference]: With dead ends: 5605 [2021-01-26 17:27:30,199 INFO L226 Difference]: Without dead ends: 2966 [2021-01-26 17:27:30,199 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-26 17:27:30,199 INFO L78 Accepts]: Start accepts. Automaton has 2966 states. Word has length 45 [2021-01-26 17:27:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:30,200 INFO L481 AbstractCegarLoop]: Abstraction has 2966 states. [2021-01-26 17:27:30,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2021-01-26 17:27:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states. [2021-01-26 17:27:30,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-26 17:27:30,211 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:30,212 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, 1] [2021-01-26 17:27:30,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-26 17:27:30,212 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:30,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:30,213 INFO L82 PathProgramCache]: Analyzing trace with hash 977887402, now seen corresponding path program 1 times [2021-01-26 17:27:30,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:30,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073065779] [2021-01-26 17:27:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:30,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073065779] [2021-01-26 17:27:30,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:30,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:30,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552749453] [2021-01-26 17:27:30,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:30,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:30,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:30,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:30,356 INFO L87 Difference]: Start difference. First operand 2966 states. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:30,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:30,668 INFO L93 Difference]: Finished difference Result 4678 states and 15066 transitions. [2021-01-26 17:27:30,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:30,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-26 17:27:30,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:30,697 INFO L225 Difference]: With dead ends: 4678 [2021-01-26 17:27:30,697 INFO L226 Difference]: Without dead ends: 3350 [2021-01-26 17:27:30,700 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 [2021-01-26 17:27:30,700 INFO L78 Accepts]: Start accepts. Automaton has 3350 states. Word has length 48 [2021-01-26 17:27:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:30,701 INFO L481 AbstractCegarLoop]: Abstraction has 3350 states. [2021-01-26 17:27:30,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:30,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states. [2021-01-26 17:27:30,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-26 17:27:30,711 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:30,711 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:27:30,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-26 17:27:30,712 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:30,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1662232019, now seen corresponding path program 1 times [2021-01-26 17:27:30,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:30,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423688935] [2021-01-26 17:27:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:30,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423688935] [2021-01-26 17:27:30,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:30,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:30,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686563665] [2021-01-26 17:27:30,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:30,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:30,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:30,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:30,944 INFO L87 Difference]: Start difference. First operand 3350 states. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:31,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:31,230 INFO L93 Difference]: Finished difference Result 4006 states and 12590 transitions. [2021-01-26 17:27:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:31,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-26 17:27:31,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:31,247 INFO L225 Difference]: With dead ends: 4006 [2021-01-26 17:27:31,247 INFO L226 Difference]: Without dead ends: 3054 [2021-01-26 17:27:31,248 INFO L769 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 [2021-01-26 17:27:31,248 INFO L78 Accepts]: Start accepts. Automaton has 3054 states. Word has length 49 [2021-01-26 17:27:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:31,248 INFO L481 AbstractCegarLoop]: Abstraction has 3054 states. [2021-01-26 17:27:31,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states. [2021-01-26 17:27:31,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-26 17:27:31,256 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:31,256 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] [2021-01-26 17:27:31,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-26 17:27:31,257 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:31,258 INFO L82 PathProgramCache]: Analyzing trace with hash -803137758, now seen corresponding path program 1 times [2021-01-26 17:27:31,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:31,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532742871] [2021-01-26 17:27:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:31,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532742871] [2021-01-26 17:27:31,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:31,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:31,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512146750] [2021-01-26 17:27:31,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:31,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:31,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:31,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:31,427 INFO L87 Difference]: Start difference. First operand 3054 states. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:31,768 INFO L93 Difference]: Finished difference Result 2916 states and 8884 transitions. [2021-01-26 17:27:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:27:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-01-26 17:27:31,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:31,781 INFO L225 Difference]: With dead ends: 2916 [2021-01-26 17:27:31,781 INFO L226 Difference]: Without dead ends: 2124 [2021-01-26 17:27:31,782 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-26 17:27:31,782 INFO L78 Accepts]: Start accepts. Automaton has 2124 states. Word has length 50 [2021-01-26 17:27:31,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:31,782 INFO L481 AbstractCegarLoop]: Abstraction has 2124 states. [2021-01-26 17:27:31,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:31,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states. [2021-01-26 17:27:31,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-26 17:27:31,791 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:31,791 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:27:31,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-26 17:27:31,791 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:31,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:31,792 INFO L82 PathProgramCache]: Analyzing trace with hash -127783167, now seen corresponding path program 1 times [2021-01-26 17:27:31,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:31,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901068468] [2021-01-26 17:27:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:32,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901068468] [2021-01-26 17:27:32,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:32,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-26 17:27:32,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806106515] [2021-01-26 17:27:32,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-26 17:27:32,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:32,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-26 17:27:32,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-26 17:27:32,048 INFO L87 Difference]: Start difference. First operand 2124 states. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:32,360 INFO L93 Difference]: Finished difference Result 1503 states and 4360 transitions. [2021-01-26 17:27:32,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 17:27:32,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-26 17:27:32,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:32,364 INFO L225 Difference]: With dead ends: 1503 [2021-01-26 17:27:32,364 INFO L226 Difference]: Without dead ends: 731 [2021-01-26 17:27:32,365 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-26 17:27:32,365 INFO L78 Accepts]: Start accepts. Automaton has 731 states. Word has length 52 [2021-01-26 17:27:32,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:32,366 INFO L481 AbstractCegarLoop]: Abstraction has 731 states. [2021-01-26 17:27:32,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states. [2021-01-26 17:27:32,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-26 17:27:32,368 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:32,369 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] [2021-01-26 17:27:32,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-26 17:27:32,369 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:32,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:32,370 INFO L82 PathProgramCache]: Analyzing trace with hash -293180094, now seen corresponding path program 1 times [2021-01-26 17:27:32,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:32,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695953721] [2021-01-26 17:27:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:32,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695953721] [2021-01-26 17:27:32,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:32,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:32,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475938137] [2021-01-26 17:27:32,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:32,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:32,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:32,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:32,491 INFO L87 Difference]: Start difference. First operand 731 states. 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) [2021-01-26 17:27:32,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:32,580 INFO L93 Difference]: Finished difference Result 623 states and 1725 transitions. [2021-01-26 17:27:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-26 17:27:32,581 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 [2021-01-26 17:27:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:32,581 INFO L225 Difference]: With dead ends: 623 [2021-01-26 17:27:32,581 INFO L226 Difference]: Without dead ends: 0 [2021-01-26 17:27:32,582 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 [2021-01-26 17:27:32,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 54 [2021-01-26 17:27:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:32,582 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-26 17:27:32,583 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) [2021-01-26 17:27:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-26 17:27:32,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-26 17:27:32,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-26 17:27:32,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 05:27:32 BasicIcfg [2021-01-26 17:27:32,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-26 17:27:32,592 INFO L168 Benchmark]: Toolchain (without parser) took 7704.26 ms. Allocated memory was 302.0 MB in the beginning and 738.2 MB in the end (delta: 436.2 MB). Free memory was 271.1 MB in the beginning and 541.2 MB in the end (delta: -270.2 MB). Peak memory consumption was 165.7 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:32,592 INFO L168 Benchmark]: CDTParser took 0.21 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. [2021-01-26 17:27:32,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.95 ms. Allocated memory is still 302.0 MB. Free memory was 270.1 MB in the beginning and 262.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:32,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.41 ms. Allocated memory is still 302.0 MB. Free memory was 262.9 MB in the beginning and 260.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:32,595 INFO L168 Benchmark]: Boogie Preprocessor took 30.43 ms. Allocated memory is still 302.0 MB. Free memory was 260.7 MB in the beginning and 259.7 MB in the end (delta: 995.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 17:27:32,595 INFO L168 Benchmark]: RCFGBuilder took 660.70 ms. Allocated memory is still 302.0 MB. Free memory was 259.7 MB in the beginning and 236.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:32,597 INFO L168 Benchmark]: TraceAbstraction took 6169.49 ms. Allocated memory was 302.0 MB in the beginning and 738.2 MB in the end (delta: 436.2 MB). Free memory was 236.7 MB in the beginning and 541.2 MB in the end (delta: -304.6 MB). Peak memory consumption was 133.7 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:32,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 775.95 ms. Allocated memory is still 302.0 MB. Free memory was 270.1 MB in the beginning and 262.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.41 ms. Allocated memory is still 302.0 MB. Free memory was 262.9 MB in the beginning and 260.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.43 ms. Allocated memory is still 302.0 MB. Free memory was 260.7 MB in the beginning and 259.7 MB in the end (delta: 995.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 660.70 ms. Allocated memory is still 302.0 MB. Free memory was 259.7 MB in the beginning and 236.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6169.49 ms. Allocated memory was 302.0 MB in the beginning and 738.2 MB in the end (delta: 436.2 MB). Free memory was 236.7 MB in the beginning and 541.2 MB in the end (delta: -304.6 MB). Peak memory consumption was 133.7 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: 6.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 770 SDtfs, 1093 SDslu, 2476 SDs, 0 SdLazy, 284 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 384 NumberOfCodeBlocks, 384 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 46638 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...