/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 23:48:22,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 23:48:22,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 23:48:22,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 23:48:22,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 23:48:22,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 23:48:22,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 23:48:22,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 23:48:22,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 23:48:22,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 23:48:22,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 23:48:22,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 23:48:22,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 23:48:22,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 23:48:22,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 23:48:22,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 23:48:22,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 23:48:22,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 23:48:22,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 23:48:22,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 23:48:22,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 23:48:22,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 23:48:22,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 23:48:22,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 23:48:22,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-17 23:48:22,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 23:48:22,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 23:48:22,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 23:48:22,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 23:48:22,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 23:48:22,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 23:48:22,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 23:48:22,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 23:48:22,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 23:48:22,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 23:48:22,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 23:48:22,197 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 23:48:22,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 23:48:22,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 23:48:22,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 23:48:22,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 23:48:22,261 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 23:48:22,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 23:48:22,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 23:48:22,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 23:48:22,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 23:48:22,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 23:48:22,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 23:48:22,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 23:48:22,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 23:48:22,264 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 23:48:22,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 23:48:22,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 23:48:22,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 23:48:22,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 23:48:22,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 23:48:22,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 23:48:22,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 23:48:22,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:48:22,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 23:48:22,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 23:48:22,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 23:48:22,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 23:48:22,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 23:48:22,267 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 23:48:22,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 23:48:22,267 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-17 23:48:22,268 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 23:48:22,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 23:48:22,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 23:48:22,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 23:48:22,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 23:48:22,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 23:48:22,804 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 23:48:22,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-12-17 23:48:22,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619b12279/dcfc78008d5644fe8cd388b3128e59bd/FLAG314be034e [2020-12-17 23:48:23,632 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 23:48:23,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-12-17 23:48:23,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619b12279/dcfc78008d5644fe8cd388b3128e59bd/FLAG314be034e [2020-12-17 23:48:23,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619b12279/dcfc78008d5644fe8cd388b3128e59bd [2020-12-17 23:48:23,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 23:48:23,931 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 23:48:23,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 23:48:23,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 23:48:23,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 23:48:23,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:48:23" (1/1) ... [2020-12-17 23:48:23,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c6c484d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:23, skipping insertion in model container [2020-12-17 23:48:23,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:48:23" (1/1) ... [2020-12-17 23:48:23,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 23:48:23,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 23:48:24,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:48:24,545 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 23:48:24,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:48:24,715 INFO L208 MainTranslator]: Completed translation [2020-12-17 23:48:24,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:24 WrapperNode [2020-12-17 23:48:24,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 23:48:24,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 23:48:24,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 23:48:24,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 23:48:24,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:24" (1/1) ... [2020-12-17 23:48:24,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:24" (1/1) ... [2020-12-17 23:48:24,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 23:48:24,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 23:48:24,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 23:48:24,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 23:48:24,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:24" (1/1) ... [2020-12-17 23:48:24,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:24" (1/1) ... [2020-12-17 23:48:24,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:24" (1/1) ... [2020-12-17 23:48:24,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:24" (1/1) ... [2020-12-17 23:48:24,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:24" (1/1) ... [2020-12-17 23:48:24,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:24" (1/1) ... [2020-12-17 23:48:24,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:24" (1/1) ... [2020-12-17 23:48:24,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 23:48:24,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 23:48:24,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 23:48:24,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 23:48:24,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:24" (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 23:48:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 23:48:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-17 23:48:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 23:48:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 23:48:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-17 23:48:24,916 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-17 23:48:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-17 23:48:24,916 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-17 23:48:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-17 23:48:24,916 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-17 23:48:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 23:48:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-17 23:48:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 23:48:24,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 23:48:24,919 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 23:48:25,437 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 23:48:25,437 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-17 23:48:25,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:48:25 BoogieIcfgContainer [2020-12-17 23:48:25,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 23:48:25,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 23:48:25,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 23:48:25,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 23:48:25,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:48:23" (1/3) ... [2020-12-17 23:48:25,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af90fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:48:25, skipping insertion in model container [2020-12-17 23:48:25,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:24" (2/3) ... [2020-12-17 23:48:25,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af90fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:48:25, skipping insertion in model container [2020-12-17 23:48:25,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:48:25" (3/3) ... [2020-12-17 23:48:25,448 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-12-17 23:48:25,464 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 23:48:25,464 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 23:48:25,468 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-17 23:48:25,469 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 23:48:25,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,512 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,512 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,513 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,513 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,515 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,515 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,515 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,519 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,519 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,519 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,520 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,527 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,527 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,532 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,532 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,532 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,533 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:25,537 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-17 23:48:25,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-17 23:48:25,577 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 23:48:25,577 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 23:48:25,577 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 23:48:25,577 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 23:48:25,577 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 23:48:25,577 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 23:48:25,578 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 23:48:25,578 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 23:48:25,591 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-12-17 23:48:26,452 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 23:48:26,493 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 23:48:26,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-17 23:48:26,548 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:26,549 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 23:48:26,550 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:26,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:26,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1557079206, now seen corresponding path program 1 times [2020-12-17 23:48:26,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:26,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998566952] [2020-12-17 23:48:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:27,159 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 23:48:27,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998566952] [2020-12-17 23:48:27,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:27,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:48:27,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615686751] [2020-12-17 23:48:27,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:48:27,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:48:27,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:48:27,203 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 23:48:27,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:27,690 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2020-12-17 23:48:27,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:48:27,692 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 23:48:27,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:27,695 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 23:48:27,695 INFO L78 Accepts]: Start accepts. Automaton has 12200 states and 42464 transitions. Word has length 42 [2020-12-17 23:48:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:27,697 INFO L481 AbstractCegarLoop]: Abstraction has 12200 states and 42464 transitions. [2020-12-17 23:48:27,697 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 23:48:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 12200 states and 42464 transitions. [2020-12-17 23:48:27,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-17 23:48:27,716 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:27,716 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 23:48:27,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 23:48:27,717 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:27,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:27,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1581474041, now seen corresponding path program 1 times [2020-12-17 23:48:27,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:27,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509774587] [2020-12-17 23:48:27,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:28,049 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2020-12-17 23:48:28,096 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 23:48:28,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509774587] [2020-12-17 23:48:28,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:28,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:28,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008828683] [2020-12-17 23:48:28,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:28,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:28,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:28,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:28,100 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 23:48:28,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:28,824 INFO L93 Difference]: Finished difference Result 16820 states and 57820 transitions. [2020-12-17 23:48:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:48:28,825 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 23:48:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:28,827 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-12-17 23:48:28,827 INFO L78 Accepts]: Start accepts. Automaton has 16820 states and 57820 transitions. Word has length 44 [2020-12-17 23:48:28,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:28,827 INFO L481 AbstractCegarLoop]: Abstraction has 16820 states and 57820 transitions. [2020-12-17 23:48:28,828 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 23:48:28,828 INFO L276 IsEmpty]: Start isEmpty. Operand 16820 states and 57820 transitions. [2020-12-17 23:48:28,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-17 23:48:28,851 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:28,852 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 23:48:28,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 23:48:28,852 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:28,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:28,853 INFO L82 PathProgramCache]: Analyzing trace with hash 674177462, now seen corresponding path program 1 times [2020-12-17 23:48:28,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:28,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289548227] [2020-12-17 23:48:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:29,172 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 23:48:29,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289548227] [2020-12-17 23:48:29,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:29,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:48:29,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116903092] [2020-12-17 23:48:29,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:48:29,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:29,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:48:29,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:48:29,183 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 23:48:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:29,916 INFO L93 Difference]: Finished difference Result 25340 states and 86536 transitions. [2020-12-17 23:48:29,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:48:29,917 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 23:48:29,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:29,919 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 23:48:29,919 INFO L78 Accepts]: Start accepts. Automaton has 25340 states and 86536 transitions. Word has length 47 [2020-12-17 23:48:29,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:29,921 INFO L481 AbstractCegarLoop]: Abstraction has 25340 states and 86536 transitions. [2020-12-17 23:48:29,921 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 23:48:29,921 INFO L276 IsEmpty]: Start isEmpty. Operand 25340 states and 86536 transitions. [2020-12-17 23:48:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-17 23:48:29,971 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:29,971 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 23:48:29,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-17 23:48:29,972 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:29,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:29,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1902429865, now seen corresponding path program 1 times [2020-12-17 23:48:29,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:29,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452798547] [2020-12-17 23:48:29,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:30,126 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 23:48:30,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452798547] [2020-12-17 23:48:30,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:30,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:30,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132482092] [2020-12-17 23:48:30,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:30,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:30,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:30,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:30,129 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 23:48:31,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:31,212 INFO L93 Difference]: Finished difference Result 47004 states and 158862 transitions. [2020-12-17 23:48:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-17 23:48:31,213 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 23:48:31,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:31,214 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-12-17 23:48:31,214 INFO L78 Accepts]: Start accepts. Automaton has 47004 states and 158862 transitions. Word has length 49 [2020-12-17 23:48:31,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:31,215 INFO L481 AbstractCegarLoop]: Abstraction has 47004 states and 158862 transitions. [2020-12-17 23:48:31,215 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 23:48:31,215 INFO L276 IsEmpty]: Start isEmpty. Operand 47004 states and 158862 transitions. [2020-12-17 23:48:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-17 23:48:31,277 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:31,277 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 23:48:31,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-17 23:48:31,278 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:31,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1518373285, now seen corresponding path program 1 times [2020-12-17 23:48:31,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:31,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751929944] [2020-12-17 23:48:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:31,582 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 5 [2020-12-17 23:48:31,590 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 23:48:31,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751929944] [2020-12-17 23:48:31,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:31,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:48:31,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376040403] [2020-12-17 23:48:31,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:48:31,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:31,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:48:31,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:48:31,595 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 23:48:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:32,122 INFO L93 Difference]: Finished difference Result 34008 states and 112147 transitions. [2020-12-17 23:48:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-17 23:48:32,124 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 23:48:32,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:32,125 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:48:32,125 INFO L78 Accepts]: Start accepts. Automaton has 34008 states and 112147 transitions. Word has length 50 [2020-12-17 23:48:32,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:32,125 INFO L481 AbstractCegarLoop]: Abstraction has 34008 states and 112147 transitions. [2020-12-17 23:48:32,126 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 23:48:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 34008 states and 112147 transitions. [2020-12-17 23:48:32,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-17 23:48:32,196 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:32,197 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 23:48:32,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-17 23:48:32,197 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:32,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:32,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1388621878, now seen corresponding path program 1 times [2020-12-17 23:48:32,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:32,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98503823] [2020-12-17 23:48:32,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:32,515 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 23:48:32,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98503823] [2020-12-17 23:48:32,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:32,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:32,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499329090] [2020-12-17 23:48:32,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:32,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:32,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:32,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:32,522 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 23:48:33,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:33,095 INFO L93 Difference]: Finished difference Result 20580 states and 65884 transitions. [2020-12-17 23:48:33,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:48:33,096 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 23:48:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:33,098 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-17 23:48:33,098 INFO L78 Accepts]: Start accepts. Automaton has 20580 states and 65884 transitions. Word has length 51 [2020-12-17 23:48:33,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:33,100 INFO L481 AbstractCegarLoop]: Abstraction has 20580 states and 65884 transitions. [2020-12-17 23:48:33,100 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 23:48:33,100 INFO L276 IsEmpty]: Start isEmpty. Operand 20580 states and 65884 transitions. [2020-12-17 23:48:33,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-17 23:48:33,151 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:33,152 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 23:48:33,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-17 23:48:33,152 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:33,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:33,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1603073441, now seen corresponding path program 1 times [2020-12-17 23:48:33,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:33,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135951743] [2020-12-17 23:48:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:33,381 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 23:48:33,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135951743] [2020-12-17 23:48:33,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:33,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-17 23:48:33,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209071217] [2020-12-17 23:48:33,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-17 23:48:33,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:33,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-17 23:48:33,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-17 23:48:33,385 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 23:48:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:34,189 INFO L93 Difference]: Finished difference Result 13128 states and 41764 transitions. [2020-12-17 23:48:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-17 23:48:34,191 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 23:48:34,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:34,192 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-12-17 23:48:34,192 INFO L78 Accepts]: Start accepts. Automaton has 13128 states and 41764 transitions. Word has length 52 [2020-12-17 23:48:34,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:34,194 INFO L481 AbstractCegarLoop]: Abstraction has 13128 states and 41764 transitions. [2020-12-17 23:48:34,194 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 23:48:34,194 INFO L276 IsEmpty]: Start isEmpty. Operand 13128 states and 41764 transitions. [2020-12-17 23:48:34,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-17 23:48:34,216 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:34,217 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 23:48:34,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-17 23:48:34,218 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:34,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:34,220 INFO L82 PathProgramCache]: Analyzing trace with hash -986251264, now seen corresponding path program 1 times [2020-12-17 23:48:34,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:34,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916143629] [2020-12-17 23:48:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:34,424 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 23:48:34,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916143629] [2020-12-17 23:48:34,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:34,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:34,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936617678] [2020-12-17 23:48:34,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:34,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:34,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:34,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:34,427 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 23:48:34,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:34,689 INFO L93 Difference]: Finished difference Result 20412 states and 63944 transitions. [2020-12-17 23:48:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-17 23:48:34,690 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 23:48:34,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:34,691 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 23:48:34,691 INFO L78 Accepts]: Start accepts. Automaton has 20412 states and 63944 transitions. Word has length 54 [2020-12-17 23:48:34,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:34,691 INFO L481 AbstractCegarLoop]: Abstraction has 20412 states and 63944 transitions. [2020-12-17 23:48:34,691 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 23:48:34,691 INFO L276 IsEmpty]: Start isEmpty. Operand 20412 states and 63944 transitions. [2020-12-17 23:48:34,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-17 23:48:34,828 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:34,828 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 23:48:34,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-17 23:48:34,829 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:34,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:34,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1457594808, now seen corresponding path program 2 times [2020-12-17 23:48:34,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:34,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817513708] [2020-12-17 23:48:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:35,007 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 23:48:35,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817513708] [2020-12-17 23:48:35,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:35,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:35,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534330808] [2020-12-17 23:48:35,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:35,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:35,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:35,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:35,016 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 23:48:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:35,293 INFO L93 Difference]: Finished difference Result 26544 states and 82880 transitions. [2020-12-17 23:48:35,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-17 23:48:35,294 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 23:48:35,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:35,295 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 23:48:35,295 INFO L78 Accepts]: Start accepts. Automaton has 26544 states and 82880 transitions. Word has length 54 [2020-12-17 23:48:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:35,295 INFO L481 AbstractCegarLoop]: Abstraction has 26544 states and 82880 transitions. [2020-12-17 23:48:35,295 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 23:48:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand 26544 states and 82880 transitions. [2020-12-17 23:48:35,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-17 23:48:35,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-17 23:48:35,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:48:35 BasicIcfg [2020-12-17 23:48:35,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-17 23:48:35,472 INFO L168 Benchmark]: Toolchain (without parser) took 11540.60 ms. Allocated memory was 302.0 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 277.1 MB in the beginning and 2.1 GB in the end (delta: -1.8 GB). Peak memory consumption was 461.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:35,473 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 302.0 MB. Free memory was 271.9 MB in the beginning and 271.8 MB in the end (delta: 153.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:48:35,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 783.04 ms. Allocated memory is still 302.0 MB. Free memory was 276.9 MB in the beginning and 246.3 MB in the end (delta: 30.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:35,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.24 ms. Allocated memory is still 302.0 MB. Free memory was 246.1 MB in the beginning and 284.5 MB in the end (delta: -38.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:35,475 INFO L168 Benchmark]: Boogie Preprocessor took 28.10 ms. Allocated memory is still 302.0 MB. Free memory was 284.5 MB in the beginning and 283.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:35,476 INFO L168 Benchmark]: RCFGBuilder took 620.72 ms. Allocated memory is still 302.0 MB. Free memory was 283.4 MB in the beginning and 259.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:35,477 INFO L168 Benchmark]: TraceAbstraction took 10029.23 ms. Allocated memory was 302.0 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 259.3 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 443.8 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:35,480 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 302.0 MB. Free memory was 271.9 MB in the beginning and 271.8 MB in the end (delta: 153.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 783.04 ms. Allocated memory is still 302.0 MB. Free memory was 276.9 MB in the beginning and 246.3 MB in the end (delta: 30.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 72.24 ms. Allocated memory is still 302.0 MB. Free memory was 246.1 MB in the beginning and 284.5 MB in the end (delta: -38.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.10 ms. Allocated memory is still 302.0 MB. Free memory was 284.5 MB in the beginning and 283.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 620.72 ms. Allocated memory is still 302.0 MB. Free memory was 283.4 MB in the beginning and 259.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 10029.23 ms. Allocated memory was 302.0 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 259.3 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 443.8 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: 9.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 1064 SDtfs, 1928 SDslu, 3824 SDs, 0 SdLazy, 483 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47004occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s 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...