/usr/bin/java -Xmx8000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:40:26,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:40:26,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:40:26,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:40:26,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:40:26,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:40:26,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:40:26,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:40:26,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:40:26,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:40:26,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:40:26,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:40:26,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:40:26,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:40:26,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:40:26,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:40:26,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:40:26,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:40:26,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:40:26,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:40:26,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:40:26,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:40:26,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:40:26,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:40:26,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:40:26,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:40:26,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:40:26,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:40:26,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:40:26,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:40:26,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:40:26,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:40:26,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:40:26,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:40:26,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:40:26,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:40:26,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:40:26,333 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:40:26,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:40:26,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:40:26,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:40:26,338 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:40:26,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:40:26,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:40:26,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:40:26,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:40:26,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:40:26,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:40:26,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:40:26,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:40:26,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:40:26,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:40:26,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:40:26,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:40:26,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:40:26,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:40:26,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:40:26,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:40:26,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:40:26,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:40:26,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:40:26,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:40:26,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:40:26,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:40:26,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:40:26,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:40:26,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:40:26,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:40:26,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:40:26,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:40:26,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:40:26,819 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:40:26,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-11-09 12:40:26,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ffddada5/777640186144447e9b15c0928d3d5db3/FLAGe312fec45 [2020-11-09 12:40:27,592 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:40:27,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-11-09 12:40:27,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ffddada5/777640186144447e9b15c0928d3d5db3/FLAGe312fec45 [2020-11-09 12:40:27,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ffddada5/777640186144447e9b15c0928d3d5db3 [2020-11-09 12:40:27,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:40:27,894 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:40:27,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:40:27,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:40:27,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:40:27,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:40:27" (1/1) ... [2020-11-09 12:40:27,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c810220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:27, skipping insertion in model container [2020-11-09 12:40:27,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:40:27" (1/1) ... [2020-11-09 12:40:27,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:40:27,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:40:28,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:40:28,304 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:40:28,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:40:28,485 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:40:28,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:28 WrapperNode [2020-11-09 12:40:28,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:40:28,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:40:28,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:40:28,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:40:28,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:28" (1/1) ... [2020-11-09 12:40:28,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:28" (1/1) ... [2020-11-09 12:40:28,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:40:28,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:40:28,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:40:28,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:40:28,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:28" (1/1) ... [2020-11-09 12:40:28,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:28" (1/1) ... [2020-11-09 12:40:28,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:28" (1/1) ... [2020-11-09 12:40:28,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:28" (1/1) ... [2020-11-09 12:40:28,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:28" (1/1) ... [2020-11-09 12:40:28,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:28" (1/1) ... [2020-11-09 12:40:28,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:28" (1/1) ... [2020-11-09 12:40:28,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:40:28,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:40:28,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:40:28,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:40:28,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:28" (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 [2020-11-09 12:40:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:40:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:40:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:40:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:40:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:40:28,728 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:40:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:40:28,728 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:40:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:40:28,728 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:40:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:40:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:40:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:40:28,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:40:28,731 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:40:29,146 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:40:29,147 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:40:29,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:40:29 BoogieIcfgContainer [2020-11-09 12:40:29,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:40:29,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:40:29,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:40:29,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:40:29,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:40:27" (1/3) ... [2020-11-09 12:40:29,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecdcc29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:40:29, skipping insertion in model container [2020-11-09 12:40:29,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:40:28" (2/3) ... [2020-11-09 12:40:29,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecdcc29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:40:29, skipping insertion in model container [2020-11-09 12:40:29,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:40:29" (3/3) ... [2020-11-09 12:40:29,161 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2020-11-09 12:40:29,177 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:40:29,177 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:40:29,181 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:40:29,182 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:40:29,211 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,212 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,212 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,212 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,213 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,213 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,213 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,213 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,215 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,215 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,216 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,216 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,217 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,218 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,218 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,219 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,219 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,219 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,219 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,220 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,220 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,223 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,223 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,233 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,233 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,233 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,233 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,236 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,237 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:40:29,239 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:40:29,251 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:40:29,274 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:40:29,274 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:40:29,275 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:40:29,275 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:40:29,275 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:40:29,275 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:40:29,275 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:40:29,275 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:40:29,288 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:40:29,290 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:40:29,293 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:40:29,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 12:40:29,343 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 12:40:29,344 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:40:29,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 12:40:29,352 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:40:32,018 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-11-09 12:40:32,947 WARN L194 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 12:40:33,085 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:40:33,328 WARN L194 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 12:40:33,458 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-09 12:40:33,458 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-09 12:40:33,466 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 12:40:33,496 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 12:40:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 12:40:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:40:33,506 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:40:33,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:40:33,507 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:40:33,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:40:33,513 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-09 12:40:33,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:40:33,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261981664] [2020-11-09 12:40:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:40:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:40:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:40:33,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261981664] [2020-11-09 12:40:33,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:40:33,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:40:33,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126199312] [2020-11-09 12:40:33,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 12:40:33,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:40:33,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 12:40:33,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:40:33,732 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 12:40:33,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:40:33,767 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 12:40:33,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 12:40:33,768 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 12:40:33,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:40:33,786 INFO L225 Difference]: With dead ends: 362 [2020-11-09 12:40:33,787 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 12:40:33,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:40:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 12:40:33,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 12:40:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 12:40:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 12:40:33,876 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 12:40:33,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:40:33,878 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 12:40:33,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 12:40:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 12:40:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:40:33,880 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:40:33,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:40:33,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:40:33,881 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:40:33,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:40:33,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-09 12:40:33,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:40:33,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105735571] [2020-11-09 12:40:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:40:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:40:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:40:34,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105735571] [2020-11-09 12:40:34,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:40:34,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:40:34,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202847300] [2020-11-09 12:40:34,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:40:34,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:40:34,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:40:34,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:40:34,083 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-09 12:40:34,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:40:34,125 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-09 12:40:34,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:40:34,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 12:40:34,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:40:34,129 INFO L225 Difference]: With dead ends: 330 [2020-11-09 12:40:34,129 INFO L226 Difference]: Without dead ends: 266 [2020-11-09 12:40:34,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:40:34,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-09 12:40:34,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-09 12:40:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-09 12:40:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-09 12:40:34,172 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-09 12:40:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:40:34,173 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-09 12:40:34,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:40:34,173 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-09 12:40:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:40:34,175 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:40:34,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:40:34,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:40:34,175 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:40:34,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:40:34,179 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-11-09 12:40:34,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:40:34,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912463503] [2020-11-09 12:40:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:40:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:40:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:40:34,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912463503] [2020-11-09 12:40:34,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:40:34,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:40:34,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694560721] [2020-11-09 12:40:34,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:40:34,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:40:34,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:40:34,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:40:34,358 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-11-09 12:40:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:40:34,468 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-11-09 12:40:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:40:34,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-09 12:40:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:40:34,474 INFO L225 Difference]: With dead ends: 290 [2020-11-09 12:40:34,474 INFO L226 Difference]: Without dead ends: 242 [2020-11-09 12:40:34,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:40:34,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-09 12:40:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-11-09 12:40:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-11-09 12:40:34,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-11-09 12:40:34,504 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-11-09 12:40:34,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:40:34,506 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-11-09 12:40:34,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:40:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-11-09 12:40:34,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:40:34,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:40:34,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:40:34,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:40:34,511 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:40:34,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:40:34,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1127596450, now seen corresponding path program 1 times [2020-11-09 12:40:34,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:40:34,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194463167] [2020-11-09 12:40:34,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:40:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:40:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:40:34,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194463167] [2020-11-09 12:40:34,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:40:34,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:40:34,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820408153] [2020-11-09 12:40:34,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:40:34,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:40:34,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:40:34,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:40:34,592 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 4 states. [2020-11-09 12:40:34,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:40:34,641 INFO L93 Difference]: Finished difference Result 260 states and 694 transitions. [2020-11-09 12:40:34,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:40:34,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 12:40:34,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:40:34,647 INFO L225 Difference]: With dead ends: 260 [2020-11-09 12:40:34,647 INFO L226 Difference]: Without dead ends: 224 [2020-11-09 12:40:34,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:40:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-09 12:40:34,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-11-09 12:40:34,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-11-09 12:40:34,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 610 transitions. [2020-11-09 12:40:34,662 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 610 transitions. Word has length 11 [2020-11-09 12:40:34,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:40:34,663 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 610 transitions. [2020-11-09 12:40:34,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:40:34,664 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 610 transitions. [2020-11-09 12:40:34,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:40:34,674 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:40:34,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:40:34,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:40:34,674 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:40:34,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:40:34,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1343804868, now seen corresponding path program 1 times [2020-11-09 12:40:34,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:40:34,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668036908] [2020-11-09 12:40:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:40:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:40:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:40:34,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668036908] [2020-11-09 12:40:34,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:40:34,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:40:34,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41329949] [2020-11-09 12:40:34,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:40:34,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:40:34,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:40:34,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:40:34,794 INFO L87 Difference]: Start difference. First operand 224 states and 610 transitions. Second operand 4 states. [2020-11-09 12:40:34,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:40:34,846 INFO L93 Difference]: Finished difference Result 245 states and 645 transitions. [2020-11-09 12:40:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:40:34,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 12:40:34,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:40:34,854 INFO L225 Difference]: With dead ends: 245 [2020-11-09 12:40:34,854 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 12:40:34,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:40:34,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 12:40:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 12:40:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 12:40:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 588 transitions. [2020-11-09 12:40:34,874 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 588 transitions. Word has length 12 [2020-11-09 12:40:34,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:40:34,876 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 588 transitions. [2020-11-09 12:40:34,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:40:34,876 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 588 transitions. [2020-11-09 12:40:34,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:40:34,878 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:40:34,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:40:34,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:40:34,879 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:40:34,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:40:34,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1736979236, now seen corresponding path program 1 times [2020-11-09 12:40:34,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:40:34,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245908904] [2020-11-09 12:40:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:40:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:40:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:40:34,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245908904] [2020-11-09 12:40:34,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:40:34,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:40:34,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81732092] [2020-11-09 12:40:34,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:40:34,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:40:34,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:40:34,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:40:34,986 INFO L87 Difference]: Start difference. First operand 218 states and 588 transitions. Second operand 4 states. [2020-11-09 12:40:35,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:40:35,050 INFO L93 Difference]: Finished difference Result 292 states and 745 transitions. [2020-11-09 12:40:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:40:35,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 12:40:35,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:40:35,054 INFO L225 Difference]: With dead ends: 292 [2020-11-09 12:40:35,054 INFO L226 Difference]: Without dead ends: 230 [2020-11-09 12:40:35,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:40:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-09 12:40:35,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 206. [2020-11-09 12:40:35,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-09 12:40:35,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 534 transitions. [2020-11-09 12:40:35,066 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 534 transitions. Word has length 13 [2020-11-09 12:40:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:40:35,067 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 534 transitions. [2020-11-09 12:40:35,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:40:35,067 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 534 transitions. [2020-11-09 12:40:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:40:35,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:40:35,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:40:35,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:40:35,069 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:40:35,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:40:35,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1291780610, now seen corresponding path program 1 times [2020-11-09 12:40:35,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:40:35,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368885870] [2020-11-09 12:40:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:40:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:40:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:40:35,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368885870] [2020-11-09 12:40:35,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:40:35,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:40:35,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474356781] [2020-11-09 12:40:35,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:40:35,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:40:35,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:40:35,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:40:35,169 INFO L87 Difference]: Start difference. First operand 206 states and 534 transitions. Second operand 5 states. [2020-11-09 12:40:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:40:35,229 INFO L93 Difference]: Finished difference Result 260 states and 663 transitions. [2020-11-09 12:40:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:40:35,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-09 12:40:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:40:35,231 INFO L225 Difference]: With dead ends: 260 [2020-11-09 12:40:35,232 INFO L226 Difference]: Without dead ends: 146 [2020-11-09 12:40:35,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:40:35,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-09 12:40:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-09 12:40:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-09 12:40:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 356 transitions. [2020-11-09 12:40:35,239 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 356 transitions. Word has length 13 [2020-11-09 12:40:35,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:40:35,239 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 356 transitions. [2020-11-09 12:40:35,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:40:35,240 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 356 transitions. [2020-11-09 12:40:35,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:40:35,240 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:40:35,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:40:35,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:40:35,241 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:40:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:40:35,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1988159974, now seen corresponding path program 1 times [2020-11-09 12:40:35,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:40:35,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141613067] [2020-11-09 12:40:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:40:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:40:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:40:35,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141613067] [2020-11-09 12:40:35,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:40:35,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:40:35,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818610821] [2020-11-09 12:40:35,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:40:35,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:40:35,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:40:35,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:40:35,328 INFO L87 Difference]: Start difference. First operand 146 states and 356 transitions. Second operand 5 states. [2020-11-09 12:40:35,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:40:35,407 INFO L93 Difference]: Finished difference Result 198 states and 470 transitions. [2020-11-09 12:40:35,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:40:35,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 12:40:35,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:40:35,409 INFO L225 Difference]: With dead ends: 198 [2020-11-09 12:40:35,410 INFO L226 Difference]: Without dead ends: 90 [2020-11-09 12:40:35,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 12:40:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-09 12:40:35,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-11-09 12:40:35,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-09 12:40:35,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 194 transitions. [2020-11-09 12:40:35,415 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 194 transitions. Word has length 14 [2020-11-09 12:40:35,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:40:35,415 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 194 transitions. [2020-11-09 12:40:35,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:40:35,415 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 194 transitions. [2020-11-09 12:40:35,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:40:35,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:40:35,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:40:35,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:40:35,417 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:40:35,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:40:35,417 INFO L82 PathProgramCache]: Analyzing trace with hash 255451346, now seen corresponding path program 1 times [2020-11-09 12:40:35,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:40:35,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842495641] [2020-11-09 12:40:35,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:40:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:40:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:40:35,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842495641] [2020-11-09 12:40:35,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:40:35,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:40:35,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675274135] [2020-11-09 12:40:35,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:40:35,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:40:35,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:40:35,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:40:35,469 INFO L87 Difference]: Start difference. First operand 90 states and 194 transitions. Second operand 5 states. [2020-11-09 12:40:35,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:40:35,501 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-11-09 12:40:35,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:40:35,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-09 12:40:35,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:40:35,502 INFO L225 Difference]: With dead ends: 82 [2020-11-09 12:40:35,502 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:40:35,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:40:35,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:40:35,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:40:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:40:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:40:35,503 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-09 12:40:35,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:40:35,504 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:40:35,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:40:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:40:35,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:40:35,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 12:40:35,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:40:35 BasicIcfg [2020-11-09 12:40:35,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:40:35,510 INFO L168 Benchmark]: Toolchain (without parser) took 7620.80 ms. Allocated memory was 164.6 MB in the beginning and 256.9 MB in the end (delta: 92.3 MB). Free memory was 138.3 MB in the beginning and 156.8 MB in the end (delta: -18.6 MB). Peak memory consumption was 74.5 MB. Max. memory is 8.0 GB. [2020-11-09 12:40:35,511 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 164.6 MB. Free memory was 137.1 MB in the beginning and 136.8 MB in the end (delta: 210.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:40:35,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.71 ms. Allocated memory is still 164.6 MB. Free memory was 137.7 MB in the beginning and 141.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 8.0 GB. [2020-11-09 12:40:35,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.46 ms. Allocated memory is still 164.6 MB. Free memory was 141.3 MB in the beginning and 139.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:40:35,513 INFO L168 Benchmark]: Boogie Preprocessor took 56.67 ms. Allocated memory is still 164.6 MB. Free memory was 139.2 MB in the beginning and 137.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:40:35,514 INFO L168 Benchmark]: RCFGBuilder took 506.73 ms. Allocated memory is still 164.6 MB. Free memory was 137.6 MB in the beginning and 115.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:40:35,515 INFO L168 Benchmark]: TraceAbstraction took 6356.95 ms. Allocated memory was 164.6 MB in the beginning and 256.9 MB in the end (delta: 92.3 MB). Free memory was 115.1 MB in the beginning and 156.8 MB in the end (delta: -41.8 MB). Peak memory consumption was 50.5 MB. Max. memory is 8.0 GB. [2020-11-09 12:40:35,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 164.6 MB. Free memory was 137.1 MB in the beginning and 136.8 MB in the end (delta: 210.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 589.71 ms. Allocated memory is still 164.6 MB. Free memory was 137.7 MB in the beginning and 141.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 95.46 ms. Allocated memory is still 164.6 MB. Free memory was 141.3 MB in the beginning and 139.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.67 ms. Allocated memory is still 164.6 MB. Free memory was 139.2 MB in the beginning and 137.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 506.73 ms. Allocated memory is still 164.6 MB. Free memory was 137.6 MB in the beginning and 115.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6356.95 ms. Allocated memory was 164.6 MB in the beginning and 256.9 MB in the end (delta: 92.3 MB). Free memory was 115.1 MB in the beginning and 156.8 MB in the end (delta: -41.8 MB). Peak memory consumption was 50.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 961 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.1s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - 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: 6.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 199 SDtfs, 177 SDslu, 296 SDs, 0 SdLazy, 100 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 3733 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...