/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/safe035_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 18:40:17,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 18:40:17,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 18:40:17,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 18:40:17,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 18:40:17,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 18:40:17,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 18:40:17,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 18:40:17,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 18:40:17,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 18:40:17,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 18:40:17,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 18:40:17,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 18:40:17,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 18:40:17,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 18:40:17,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 18:40:17,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 18:40:17,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 18:40:17,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 18:40:17,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 18:40:17,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 18:40:17,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 18:40:17,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 18:40:17,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 18:40:17,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 18:40:17,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 18:40:17,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 18:40:17,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 18:40:17,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 18:40:17,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 18:40:17,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 18:40:17,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 18:40:17,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 18:40:17,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 18:40:17,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 18:40:17,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 18:40:17,266 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 [2020-10-15 18:40:17,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 18:40:17,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 18:40:17,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 18:40:17,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 18:40:17,289 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 18:40:17,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 18:40:17,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 18:40:17,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 18:40:17,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 18:40:17,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 18:40:17,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 18:40:17,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 18:40:17,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 18:40:17,290 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 18:40:17,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 18:40:17,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 18:40:17,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 18:40:17,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 18:40:17,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 18:40:17,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 18:40:17,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 18:40:17,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:40:17,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 18:40:17,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 18:40:17,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 18:40:17,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 18:40:17,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 18:40:17,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 18:40:17,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 18:40:17,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 18:40:17,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 18:40:17,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 18:40:17,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 18:40:17,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 18:40:17,634 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 18:40:17,634 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-10-15 18:40:17,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c123069e5/1b57eb4598384785b8fdd01681adb523/FLAG42a1fac7f [2020-10-15 18:40:18,187 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 18:40:18,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-10-15 18:40:18,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c123069e5/1b57eb4598384785b8fdd01681adb523/FLAG42a1fac7f [2020-10-15 18:40:18,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c123069e5/1b57eb4598384785b8fdd01681adb523 [2020-10-15 18:40:18,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 18:40:18,551 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 18:40:18,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 18:40:18,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 18:40:18,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 18:40:18,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:40:18" (1/1) ... [2020-10-15 18:40:18,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@670d15d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:18, skipping insertion in model container [2020-10-15 18:40:18,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:40:18" (1/1) ... [2020-10-15 18:40:18,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 18:40:18,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 18:40:19,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:40:19,174 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 18:40:19,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:40:19,293 INFO L208 MainTranslator]: Completed translation [2020-10-15 18:40:19,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:19 WrapperNode [2020-10-15 18:40:19,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 18:40:19,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 18:40:19,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 18:40:19,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 18:40:19,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:19" (1/1) ... [2020-10-15 18:40:19,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:19" (1/1) ... [2020-10-15 18:40:19,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 18:40:19,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 18:40:19,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 18:40:19,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 18:40:19,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:19" (1/1) ... [2020-10-15 18:40:19,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:19" (1/1) ... [2020-10-15 18:40:19,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:19" (1/1) ... [2020-10-15 18:40:19,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:19" (1/1) ... [2020-10-15 18:40:19,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:19" (1/1) ... [2020-10-15 18:40:19,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:19" (1/1) ... [2020-10-15 18:40:19,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:19" (1/1) ... [2020-10-15 18:40:19,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 18:40:19,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 18:40:19,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 18:40:19,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 18:40:19,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:19" (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 [2020-10-15 18:40:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 18:40:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 18:40:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 18:40:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 18:40:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 18:40:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 18:40:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 18:40:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 18:40:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 18:40:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 18:40:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 18:40:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 18:40:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 18:40:19,438 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 18:40:19,804 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 18:40:19,804 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 18:40:19,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:40:19 BoogieIcfgContainer [2020-10-15 18:40:19,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 18:40:19,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 18:40:19,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 18:40:19,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 18:40:19,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:40:18" (1/3) ... [2020-10-15 18:40:19,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5ab8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:40:19, skipping insertion in model container [2020-10-15 18:40:19,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:40:19" (2/3) ... [2020-10-15 18:40:19,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5ab8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:40:19, skipping insertion in model container [2020-10-15 18:40:19,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:40:19" (3/3) ... [2020-10-15 18:40:19,815 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2020-10-15 18:40:19,824 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 18:40:19,825 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 18:40:19,831 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 18:40:19,832 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 18:40:19,860 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,861 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,862 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,863 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,866 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,871 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,871 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,882 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,882 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,882 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,894 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,894 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,894 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,895 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:40:19,916 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 18:40:19,936 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 18:40:19,936 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 18:40:19,936 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 18:40:19,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 18:40:19,937 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 18:40:19,937 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 18:40:19,937 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 18:40:19,937 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 18:40:19,949 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 18:40:19,952 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 18:40:19,955 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 18:40:19,957 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-15 18:40:20,001 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-15 18:40:20,002 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 18:40:20,010 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 18:40:20,014 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 18:40:21,643 INFO L132 LiptonReduction]: Checked pairs total: 2520 [2020-10-15 18:40:21,643 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-15 18:40:21,650 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-15 18:40:21,678 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 18:40:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 18:40:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 18:40:21,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:40:21,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:40:21,689 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:40:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:40:21,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-10-15 18:40:21,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:40:21,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933724847] [2020-10-15 18:40:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:40:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:40:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:40:21,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933724847] [2020-10-15 18:40:21,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:40:21,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:40:21,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288579196] [2020-10-15 18:40:21,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:40:21,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:40:21,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:40:21,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:40:21,959 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 18:40:22,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:40:22,009 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-10-15 18:40:22,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:40:22,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 18:40:22,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:40:22,028 INFO L225 Difference]: With dead ends: 294 [2020-10-15 18:40:22,028 INFO L226 Difference]: Without dead ends: 230 [2020-10-15 18:40:22,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:40:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-15 18:40:22,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-15 18:40:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-15 18:40:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-10-15 18:40:22,097 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-10-15 18:40:22,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:40:22,098 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-10-15 18:40:22,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:40:22,098 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-10-15 18:40:22,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 18:40:22,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:40:22,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:40:22,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 18:40:22,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:40:22,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:40:22,101 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-10-15 18:40:22,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:40:22,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279781756] [2020-10-15 18:40:22,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:40:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:40:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:40:22,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279781756] [2020-10-15 18:40:22,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:40:22,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:40:22,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911974718] [2020-10-15 18:40:22,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:40:22,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:40:22,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:40:22,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:40:22,215 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-10-15 18:40:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:40:22,224 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-15 18:40:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:40:22,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 18:40:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:40:22,228 INFO L225 Difference]: With dead ends: 202 [2020-10-15 18:40:22,228 INFO L226 Difference]: Without dead ends: 202 [2020-10-15 18:40:22,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:40:22,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-15 18:40:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-15 18:40:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-15 18:40:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-15 18:40:22,245 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-15 18:40:22,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:40:22,245 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-15 18:40:22,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:40:22,246 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-15 18:40:22,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 18:40:22,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:40:22,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:40:22,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 18:40:22,248 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:40:22,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:40:22,248 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-10-15 18:40:22,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:40:22,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095644508] [2020-10-15 18:40:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:40:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:40:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:40:22,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095644508] [2020-10-15 18:40:22,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:40:22,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:40:22,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884278258] [2020-10-15 18:40:22,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:40:22,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:40:22,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:40:22,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:40:22,294 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-15 18:40:22,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:40:22,315 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-10-15 18:40:22,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:40:22,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 18:40:22,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:40:22,318 INFO L225 Difference]: With dead ends: 266 [2020-10-15 18:40:22,318 INFO L226 Difference]: Without dead ends: 140 [2020-10-15 18:40:22,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:40:22,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-15 18:40:22,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-15 18:40:22,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-15 18:40:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-10-15 18:40:22,329 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-10-15 18:40:22,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:40:22,329 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-10-15 18:40:22,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:40:22,329 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-10-15 18:40:22,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 18:40:22,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:40:22,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:40:22,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 18:40:22,331 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:40:22,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:40:22,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-10-15 18:40:22,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:40:22,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910809780] [2020-10-15 18:40:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:40:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:40:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:40:22,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910809780] [2020-10-15 18:40:22,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:40:22,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:40:22,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104585169] [2020-10-15 18:40:22,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:40:22,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:40:22,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:40:22,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:40:22,478 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-10-15 18:40:22,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:40:22,532 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-10-15 18:40:22,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:40:22,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 18:40:22,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:40:22,536 INFO L225 Difference]: With dead ends: 165 [2020-10-15 18:40:22,536 INFO L226 Difference]: Without dead ends: 113 [2020-10-15 18:40:22,536 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 [2020-10-15 18:40:22,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-15 18:40:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-15 18:40:22,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-15 18:40:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-10-15 18:40:22,555 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-10-15 18:40:22,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:40:22,555 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-10-15 18:40:22,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:40:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-10-15 18:40:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 18:40:22,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:40:22,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:40:22,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 18:40:22,557 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:40:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:40:22,560 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-10-15 18:40:22,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:40:22,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742005999] [2020-10-15 18:40:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:40:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:40:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:40:22,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742005999] [2020-10-15 18:40:22,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:40:22,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:40:22,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961061594] [2020-10-15 18:40:22,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:40:22,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:40:22,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:40:22,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:40:22,662 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 5 states. [2020-10-15 18:40:22,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:40:22,719 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-10-15 18:40:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:40:22,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-15 18:40:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:40:22,721 INFO L225 Difference]: With dead ends: 111 [2020-10-15 18:40:22,721 INFO L226 Difference]: Without dead ends: 80 [2020-10-15 18:40:22,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:40:22,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-15 18:40:22,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-15 18:40:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-15 18:40:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-10-15 18:40:22,725 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-10-15 18:40:22,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:40:22,726 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-10-15 18:40:22,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:40:22,726 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-10-15 18:40:22,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 18:40:22,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:40:22,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:40:22,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 18:40:22,728 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:40:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:40:22,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-10-15 18:40:22,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:40:22,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381429558] [2020-10-15 18:40:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:40:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:40:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:40:22,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381429558] [2020-10-15 18:40:22,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:40:22,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 18:40:22,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728805904] [2020-10-15 18:40:22,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 18:40:22,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:40:22,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 18:40:22,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:40:22,805 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 6 states. [2020-10-15 18:40:22,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:40:22,852 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-10-15 18:40:22,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 18:40:22,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-15 18:40:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:40:22,854 INFO L225 Difference]: With dead ends: 75 [2020-10-15 18:40:22,854 INFO L226 Difference]: Without dead ends: 66 [2020-10-15 18:40:22,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 18:40:22,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-15 18:40:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-15 18:40:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-15 18:40:22,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-10-15 18:40:22,858 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-10-15 18:40:22,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:40:22,858 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-10-15 18:40:22,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 18:40:22,859 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-10-15 18:40:22,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:40:22,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:40:22,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:40:22,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 18:40:22,860 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:40:22,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:40:22,861 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-10-15 18:40:22,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:40:22,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236940119] [2020-10-15 18:40:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:40:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:40:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:40:22,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236940119] [2020-10-15 18:40:22,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:40:22,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:40:22,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114987653] [2020-10-15 18:40:22,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:40:22,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:40:22,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:40:22,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:40:22,900 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-10-15 18:40:22,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:40:22,928 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-10-15 18:40:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:40:22,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 18:40:22,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:40:22,929 INFO L225 Difference]: With dead ends: 85 [2020-10-15 18:40:22,929 INFO L226 Difference]: Without dead ends: 48 [2020-10-15 18:40:22,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:40:22,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-15 18:40:22,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-15 18:40:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-15 18:40:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-10-15 18:40:22,933 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-10-15 18:40:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:40:22,934 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-10-15 18:40:22,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:40:22,934 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-10-15 18:40:22,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:40:22,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:40:22,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:40:22,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 18:40:22,935 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:40:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:40:22,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-10-15 18:40:22,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:40:22,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563437594] [2020-10-15 18:40:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:40:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:40:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:40:22,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563437594] [2020-10-15 18:40:22,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:40:22,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:40:22,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711048317] [2020-10-15 18:40:22,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:40:22,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:40:22,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:40:22,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:40:22,972 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-10-15 18:40:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:40:22,996 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-10-15 18:40:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:40:22,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 18:40:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:40:22,997 INFO L225 Difference]: With dead ends: 73 [2020-10-15 18:40:22,997 INFO L226 Difference]: Without dead ends: 42 [2020-10-15 18:40:22,998 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 [2020-10-15 18:40:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-15 18:40:22,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-15 18:40:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-15 18:40:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-10-15 18:40:23,000 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-10-15 18:40:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:40:23,000 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-10-15 18:40:23,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:40:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-10-15 18:40:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:40:23,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:40:23,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:40:23,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 18:40:23,002 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:40:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:40:23,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-10-15 18:40:23,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:40:23,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403660785] [2020-10-15 18:40:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:40:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:40:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:40:23,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403660785] [2020-10-15 18:40:23,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:40:23,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:40:23,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126165754] [2020-10-15 18:40:23,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:40:23,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:40:23,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:40:23,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:40:23,039 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-10-15 18:40:23,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:40:23,050 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-10-15 18:40:23,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:40:23,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 18:40:23,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:40:23,051 INFO L225 Difference]: With dead ends: 41 [2020-10-15 18:40:23,051 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 18:40:23,052 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 [2020-10-15 18:40:23,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 18:40:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 18:40:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 18:40:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 18:40:23,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 18:40:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:40:23,053 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 18:40:23,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:40:23,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 18:40:23,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 18:40:23,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 18:40:23,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:40:23 BasicIcfg [2020-10-15 18:40:23,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 18:40:23,060 INFO L168 Benchmark]: Toolchain (without parser) took 4508.64 ms. Allocated memory was 251.7 MB in the beginning and 370.7 MB in the end (delta: 119.0 MB). Free memory was 203.0 MB in the beginning and 223.2 MB in the end (delta: -20.2 MB). Peak memory consumption was 98.9 MB. Max. memory is 14.2 GB. [2020-10-15 18:40:23,061 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 251.7 MB. Free memory is still 225.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 18:40:23,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.43 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 203.0 MB in the beginning and 265.7 MB in the end (delta: -62.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-15 18:40:23,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.70 ms. Allocated memory is still 315.1 MB. Free memory was 265.7 MB in the beginning and 263.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:40:23,063 INFO L168 Benchmark]: Boogie Preprocessor took 25.28 ms. Allocated memory is still 315.1 MB. Free memory was 263.2 MB in the beginning and 260.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:40:23,064 INFO L168 Benchmark]: RCFGBuilder took 436.65 ms. Allocated memory is still 315.1 MB. Free memory was 260.7 MB in the beginning and 238.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-15 18:40:23,065 INFO L168 Benchmark]: TraceAbstraction took 3249.98 ms. Allocated memory was 315.1 MB in the beginning and 370.7 MB in the end (delta: 55.6 MB). Free memory was 238.9 MB in the beginning and 223.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 71.2 MB. Max. memory is 14.2 GB. [2020-10-15 18:40:23,069 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 251.7 MB. Free memory is still 225.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 742.43 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 203.0 MB in the beginning and 265.7 MB in the end (delta: -62.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.70 ms. Allocated memory is still 315.1 MB. Free memory was 265.7 MB in the beginning and 263.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.28 ms. Allocated memory is still 315.1 MB. Free memory was 263.2 MB in the beginning and 260.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 436.65 ms. Allocated memory is still 315.1 MB. Free memory was 260.7 MB in the beginning and 238.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3249.98 ms. Allocated memory was 315.1 MB in the beginning and 370.7 MB in the end (delta: 55.6 MB). Free memory was 238.9 MB in the beginning and 223.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 71.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 837 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 63 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 2520 MoverChecksTotal - PositiveResult [Line: 7]: 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 172 SDtfs, 128 SDslu, 202 SDs, 0 SdLazy, 120 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 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...