/usr/bin/java -Xmx8000000000 -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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 06:43:23,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 06:43:23,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 06:43:23,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 06:43:23,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 06:43:23,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 06:43:23,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 06:43:23,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 06:43:23,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 06:43:23,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 06:43:23,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 06:43:23,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 06:43:23,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 06:43:23,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 06:43:23,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 06:43:23,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 06:43:23,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 06:43:23,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 06:43:23,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 06:43:23,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 06:43:23,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 06:43:23,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 06:43:23,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 06:43:23,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 06:43:23,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 06:43:23,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 06:43:23,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 06:43:23,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 06:43:23,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 06:43:23,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 06:43:23,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 06:43:23,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 06:43:23,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 06:43:23,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 06:43:23,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 06:43:23,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 06:43:23,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 06:43:23,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 06:43:23,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 06:43:23,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 06:43:23,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 06:43:23,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-04-18 06:43:23,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 06:43:23,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 06:43:23,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 06:43:23,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 06:43:23,304 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 06:43:23,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 06:43:23,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 06:43:23,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 06:43:23,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 06:43:23,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 06:43:23,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 06:43:23,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 06:43:23,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 06:43:23,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 06:43:23,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 06:43:23,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 06:43:23,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 06:43:23,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 06:43:23,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 06:43:23,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 06:43:23,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 06:43:23,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 06:43:23,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 06:43:23,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 06:43:23,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 06:43:23,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 06:43:23,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 06:43:23,310 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 06:43:23,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 06:43:23,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 06:43:23,617 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 06:43:23,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 06:43:23,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 06:43:23,636 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 06:43:23,636 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 06:43:23,637 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-04-18 06:43:23,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f2a3e95/4b01f87bde044674812ebc2288f7a8e4/FLAG4859b66b5 [2020-04-18 06:43:24,204 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 06:43:24,205 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-04-18 06:43:24,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f2a3e95/4b01f87bde044674812ebc2288f7a8e4/FLAG4859b66b5 [2020-04-18 06:43:24,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f2a3e95/4b01f87bde044674812ebc2288f7a8e4 [2020-04-18 06:43:24,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 06:43:24,553 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 06:43:24,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 06:43:24,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 06:43:24,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 06:43:24,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:43:24" (1/1) ... [2020-04-18 06:43:24,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a908ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:24, skipping insertion in model container [2020-04-18 06:43:24,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:43:24" (1/1) ... [2020-04-18 06:43:24,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 06:43:24,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 06:43:25,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:43:25,176 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 06:43:25,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:43:25,313 INFO L208 MainTranslator]: Completed translation [2020-04-18 06:43:25,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:25 WrapperNode [2020-04-18 06:43:25,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 06:43:25,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 06:43:25,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 06:43:25,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 06:43:25,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:25" (1/1) ... [2020-04-18 06:43:25,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:25" (1/1) ... [2020-04-18 06:43:25,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 06:43:25,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 06:43:25,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 06:43:25,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 06:43:25,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:25" (1/1) ... [2020-04-18 06:43:25,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:25" (1/1) ... [2020-04-18 06:43:25,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:25" (1/1) ... [2020-04-18 06:43:25,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:25" (1/1) ... [2020-04-18 06:43:25,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:25" (1/1) ... [2020-04-18 06:43:25,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:25" (1/1) ... [2020-04-18 06:43:25,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:25" (1/1) ... [2020-04-18 06:43:25,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 06:43:25,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 06:43:25,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 06:43:25,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 06:43:25,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 06:43:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 06:43:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 06:43:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 06:43:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 06:43:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 06:43:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 06:43:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 06:43:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 06:43:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 06:43:25,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 06:43:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 06:43:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 06:43:25,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 06:43:25,468 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 06:43:25,846 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 06:43:25,846 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 06:43:25,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:43:25 BoogieIcfgContainer [2020-04-18 06:43:25,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 06:43:25,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 06:43:25,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 06:43:25,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 06:43:25,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:43:24" (1/3) ... [2020-04-18 06:43:25,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2789d9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:43:25, skipping insertion in model container [2020-04-18 06:43:25,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:25" (2/3) ... [2020-04-18 06:43:25,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2789d9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:43:25, skipping insertion in model container [2020-04-18 06:43:25,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:43:25" (3/3) ... [2020-04-18 06:43:25,861 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-04-18 06:43:25,871 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 06:43:25,872 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 06:43:25,878 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 06:43:25,879 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 06:43:25,902 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,903 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,903 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,904 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,904 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,904 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,905 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,905 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,905 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,906 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,906 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,906 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,907 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,907 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,907 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,907 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,908 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,908 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,912 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,912 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,913 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,913 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,926 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,926 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,926 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,927 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,929 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,929 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,929 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,929 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:43:25,947 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 06:43:25,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 06:43:25,963 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 06:43:25,963 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 06:43:25,963 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 06:43:25,963 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 06:43:25,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 06:43:25,964 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 06:43:25,964 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 06:43:25,976 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 67 transitions, 149 flow [2020-04-18 06:43:26,426 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7266 states. [2020-04-18 06:43:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states. [2020-04-18 06:43:26,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 06:43:26,455 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:43:26,456 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:43:26,456 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:43:26,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:43:26,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1611632849, now seen corresponding path program 1 times [2020-04-18 06:43:26,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:43:26,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744122842] [2020-04-18 06:43:26,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:43:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:43:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:43:26,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744122842] [2020-04-18 06:43:26,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:43:26,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:43:26,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009938240] [2020-04-18 06:43:26,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:43:26,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:43:26,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:43:26,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:43:26,995 INFO L87 Difference]: Start difference. First operand 7266 states. Second operand 7 states. [2020-04-18 06:43:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:43:27,648 INFO L93 Difference]: Finished difference Result 16774 states and 57234 transitions. [2020-04-18 06:43:27,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:43:27,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-04-18 06:43:27,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:43:27,712 INFO L225 Difference]: With dead ends: 16774 [2020-04-18 06:43:27,712 INFO L226 Difference]: Without dead ends: 5212 [2020-04-18 06:43:27,714 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:43:27,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2020-04-18 06:43:27,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 4252. [2020-04-18 06:43:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4252 states. [2020-04-18 06:43:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 14005 transitions. [2020-04-18 06:43:28,001 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 14005 transitions. Word has length 34 [2020-04-18 06:43:28,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:43:28,005 INFO L479 AbstractCegarLoop]: Abstraction has 4252 states and 14005 transitions. [2020-04-18 06:43:28,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:43:28,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 14005 transitions. [2020-04-18 06:43:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 06:43:28,017 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:43:28,018 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:43:28,018 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:43:28,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:43:28,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1624822546, now seen corresponding path program 1 times [2020-04-18 06:43:28,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:43:28,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064710499] [2020-04-18 06:43:28,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:43:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:43:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:43:28,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064710499] [2020-04-18 06:43:28,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:43:28,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:43:28,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665282369] [2020-04-18 06:43:28,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:43:28,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:43:28,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:43:28,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:43:28,313 INFO L87 Difference]: Start difference. First operand 4252 states and 14005 transitions. Second operand 6 states. [2020-04-18 06:43:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:43:28,547 INFO L93 Difference]: Finished difference Result 4892 states and 16009 transitions. [2020-04-18 06:43:28,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:43:28,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 06:43:28,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:43:28,581 INFO L225 Difference]: With dead ends: 4892 [2020-04-18 06:43:28,583 INFO L226 Difference]: Without dead ends: 4108 [2020-04-18 06:43:28,592 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:43:28,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2020-04-18 06:43:28,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 4108. [2020-04-18 06:43:28,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4108 states. [2020-04-18 06:43:28,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 13465 transitions. [2020-04-18 06:43:28,783 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 13465 transitions. Word has length 36 [2020-04-18 06:43:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:43:28,784 INFO L479 AbstractCegarLoop]: Abstraction has 4108 states and 13465 transitions. [2020-04-18 06:43:28,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:43:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 13465 transitions. [2020-04-18 06:43:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 06:43:28,796 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:43:28,796 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:43:28,796 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:43:28,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:43:28,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1790094945, now seen corresponding path program 1 times [2020-04-18 06:43:28,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:43:28,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537052883] [2020-04-18 06:43:28,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:43:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:43:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:43:28,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537052883] [2020-04-18 06:43:28,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:43:28,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:43:28,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574103294] [2020-04-18 06:43:28,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:43:28,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:43:28,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:43:28,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:43:28,980 INFO L87 Difference]: Start difference. First operand 4108 states and 13465 transitions. Second operand 6 states. [2020-04-18 06:43:29,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:43:29,187 INFO L93 Difference]: Finished difference Result 4428 states and 14421 transitions. [2020-04-18 06:43:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:43:29,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-18 06:43:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:43:29,216 INFO L225 Difference]: With dead ends: 4428 [2020-04-18 06:43:29,216 INFO L226 Difference]: Without dead ends: 3868 [2020-04-18 06:43:29,216 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:43:29,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2020-04-18 06:43:29,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3580. [2020-04-18 06:43:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3580 states. [2020-04-18 06:43:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 11701 transitions. [2020-04-18 06:43:29,335 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 11701 transitions. Word has length 38 [2020-04-18 06:43:29,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:43:29,335 INFO L479 AbstractCegarLoop]: Abstraction has 3580 states and 11701 transitions. [2020-04-18 06:43:29,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:43:29,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 11701 transitions. [2020-04-18 06:43:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 06:43:29,344 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:43:29,344 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:43:29,345 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:43:29,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:43:29,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1347302749, now seen corresponding path program 1 times [2020-04-18 06:43:29,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:43:29,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833902152] [2020-04-18 06:43:29,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:43:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:43:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:43:29,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833902152] [2020-04-18 06:43:29,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:43:29,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:43:29,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730978122] [2020-04-18 06:43:29,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:43:29,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:43:29,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:43:29,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:43:29,463 INFO L87 Difference]: Start difference. First operand 3580 states and 11701 transitions. Second operand 7 states. [2020-04-18 06:43:29,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:43:29,732 INFO L93 Difference]: Finished difference Result 5812 states and 18539 transitions. [2020-04-18 06:43:29,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:43:29,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 06:43:29,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:43:29,772 INFO L225 Difference]: With dead ends: 5812 [2020-04-18 06:43:29,772 INFO L226 Difference]: Without dead ends: 4356 [2020-04-18 06:43:29,773 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:43:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2020-04-18 06:43:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 3284. [2020-04-18 06:43:29,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3284 states. [2020-04-18 06:43:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 10607 transitions. [2020-04-18 06:43:29,885 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 10607 transitions. Word has length 39 [2020-04-18 06:43:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:43:29,888 INFO L479 AbstractCegarLoop]: Abstraction has 3284 states and 10607 transitions. [2020-04-18 06:43:29,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:43:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 10607 transitions. [2020-04-18 06:43:29,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 06:43:29,898 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:43:29,898 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:43:29,898 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:43:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:43:29,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1720745512, now seen corresponding path program 1 times [2020-04-18 06:43:29,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:43:29,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103962231] [2020-04-18 06:43:29,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:43:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:43:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:43:30,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103962231] [2020-04-18 06:43:30,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:43:30,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:43:30,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224450761] [2020-04-18 06:43:30,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:43:30,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:43:30,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:43:30,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:43:30,125 INFO L87 Difference]: Start difference. First operand 3284 states and 10607 transitions. Second operand 7 states. [2020-04-18 06:43:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:43:30,361 INFO L93 Difference]: Finished difference Result 5716 states and 18235 transitions. [2020-04-18 06:43:30,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:43:30,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 06:43:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:43:30,377 INFO L225 Difference]: With dead ends: 5716 [2020-04-18 06:43:30,377 INFO L226 Difference]: Without dead ends: 4108 [2020-04-18 06:43:30,379 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:43:30,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2020-04-18 06:43:30,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 2868. [2020-04-18 06:43:30,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2868 states. [2020-04-18 06:43:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 9113 transitions. [2020-04-18 06:43:30,490 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 9113 transitions. Word has length 39 [2020-04-18 06:43:30,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:43:30,491 INFO L479 AbstractCegarLoop]: Abstraction has 2868 states and 9113 transitions. [2020-04-18 06:43:30,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:43:30,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 9113 transitions. [2020-04-18 06:43:30,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 06:43:30,501 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:43:30,504 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:43:30,504 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:43:30,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:43:30,505 INFO L82 PathProgramCache]: Analyzing trace with hash 815158944, now seen corresponding path program 1 times [2020-04-18 06:43:30,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:43:30,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016927956] [2020-04-18 06:43:30,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:43:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:43:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:43:30,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016927956] [2020-04-18 06:43:30,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:43:30,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:43:30,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430177895] [2020-04-18 06:43:30,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:43:30,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:43:30,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:43:30,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:43:30,658 INFO L87 Difference]: Start difference. First operand 2868 states and 9113 transitions. Second operand 6 states. [2020-04-18 06:43:30,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:43:30,789 INFO L93 Difference]: Finished difference Result 3780 states and 11801 transitions. [2020-04-18 06:43:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:43:30,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-04-18 06:43:30,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:43:30,798 INFO L225 Difference]: With dead ends: 3780 [2020-04-18 06:43:30,799 INFO L226 Difference]: Without dead ends: 2604 [2020-04-18 06:43:30,799 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:43:30,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2020-04-18 06:43:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2604. [2020-04-18 06:43:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2020-04-18 06:43:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 8107 transitions. [2020-04-18 06:43:30,862 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 8107 transitions. Word has length 40 [2020-04-18 06:43:30,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:43:30,862 INFO L479 AbstractCegarLoop]: Abstraction has 2604 states and 8107 transitions. [2020-04-18 06:43:30,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:43:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 8107 transitions. [2020-04-18 06:43:30,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 06:43:30,868 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:43:30,868 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:43:30,869 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:43:30,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:43:30,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1028320348, now seen corresponding path program 1 times [2020-04-18 06:43:30,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:43:30,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412158405] [2020-04-18 06:43:30,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:43:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:43:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:43:31,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412158405] [2020-04-18 06:43:31,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:43:31,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:43:31,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237238236] [2020-04-18 06:43:31,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:43:31,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:43:31,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:43:31,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:43:31,032 INFO L87 Difference]: Start difference. First operand 2604 states and 8107 transitions. Second operand 7 states. [2020-04-18 06:43:31,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:43:31,216 INFO L93 Difference]: Finished difference Result 2844 states and 8615 transitions. [2020-04-18 06:43:31,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:43:31,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-04-18 06:43:31,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:43:31,225 INFO L225 Difference]: With dead ends: 2844 [2020-04-18 06:43:31,225 INFO L226 Difference]: Without dead ends: 1820 [2020-04-18 06:43:31,226 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 06:43:31,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2020-04-18 06:43:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1820. [2020-04-18 06:43:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2020-04-18 06:43:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 5405 transitions. [2020-04-18 06:43:31,282 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 5405 transitions. Word has length 41 [2020-04-18 06:43:31,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:43:31,282 INFO L479 AbstractCegarLoop]: Abstraction has 1820 states and 5405 transitions. [2020-04-18 06:43:31,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:43:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 5405 transitions. [2020-04-18 06:43:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 06:43:31,287 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:43:31,287 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:43:31,287 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:43:31,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:43:31,288 INFO L82 PathProgramCache]: Analyzing trace with hash 672960963, now seen corresponding path program 1 times [2020-04-18 06:43:31,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:43:31,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881959585] [2020-04-18 06:43:31,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:43:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:43:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:43:31,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881959585] [2020-04-18 06:43:31,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:43:31,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:43:31,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799310326] [2020-04-18 06:43:31,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:43:31,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:43:31,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:43:31,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:43:31,409 INFO L87 Difference]: Start difference. First operand 1820 states and 5405 transitions. Second operand 8 states. [2020-04-18 06:43:31,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:43:31,520 INFO L93 Difference]: Finished difference Result 2394 states and 7014 transitions. [2020-04-18 06:43:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 06:43:31,520 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-04-18 06:43:31,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:43:31,524 INFO L225 Difference]: With dead ends: 2394 [2020-04-18 06:43:31,524 INFO L226 Difference]: Without dead ends: 1154 [2020-04-18 06:43:31,525 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-04-18 06:43:31,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2020-04-18 06:43:31,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2020-04-18 06:43:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1154 states. [2020-04-18 06:43:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 3277 transitions. [2020-04-18 06:43:31,551 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 3277 transitions. Word has length 43 [2020-04-18 06:43:31,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:43:31,551 INFO L479 AbstractCegarLoop]: Abstraction has 1154 states and 3277 transitions. [2020-04-18 06:43:31,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:43:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 3277 transitions. [2020-04-18 06:43:31,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 06:43:31,555 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:43:31,555 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:43:31,555 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:43:31,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:43:31,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1248010763, now seen corresponding path program 2 times [2020-04-18 06:43:31,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:43:31,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472367478] [2020-04-18 06:43:31,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:43:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:43:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:43:31,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472367478] [2020-04-18 06:43:31,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:43:31,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:43:31,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487293333] [2020-04-18 06:43:31,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:43:31,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:43:31,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:43:31,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:43:31,677 INFO L87 Difference]: Start difference. First operand 1154 states and 3277 transitions. Second operand 8 states. [2020-04-18 06:43:31,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:43:31,762 INFO L93 Difference]: Finished difference Result 722 states and 1954 transitions. [2020-04-18 06:43:31,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 06:43:31,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-04-18 06:43:31,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:43:31,763 INFO L225 Difference]: With dead ends: 722 [2020-04-18 06:43:31,763 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 06:43:31,764 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-04-18 06:43:31,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 06:43:31,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 06:43:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 06:43:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 06:43:31,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-04-18 06:43:31,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:43:31,765 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 06:43:31,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:43:31,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 06:43:31,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 06:43:31,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:43:31 BasicIcfg [2020-04-18 06:43:31,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 06:43:31,774 INFO L168 Benchmark]: Toolchain (without parser) took 7241.62 ms. Allocated memory was 140.5 MB in the beginning and 375.4 MB in the end (delta: 234.9 MB). Free memory was 102.0 MB in the beginning and 148.6 MB in the end (delta: -46.6 MB). Peak memory consumption was 188.3 MB. Max. memory is 7.1 GB. [2020-04-18 06:43:31,775 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 06:43:31,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.76 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 100.1 MB in the beginning and 160.3 MB in the end (delta: -60.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-04-18 06:43:31,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.11 ms. Allocated memory is still 205.5 MB. Free memory was 160.3 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 06:43:31,781 INFO L168 Benchmark]: Boogie Preprocessor took 23.43 ms. Allocated memory is still 205.5 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 06:43:31,782 INFO L168 Benchmark]: RCFGBuilder took 458.73 ms. Allocated memory is still 205.5 MB. Free memory was 156.9 MB in the beginning and 134.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 06:43:31,784 INFO L168 Benchmark]: TraceAbstraction took 5916.99 ms. Allocated memory was 205.5 MB in the beginning and 375.4 MB in the end (delta: 169.9 MB). Free memory was 134.1 MB in the beginning and 148.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 155.4 MB. Max. memory is 7.1 GB. [2020-04-18 06:43:31,797 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 756.76 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 100.1 MB in the beginning and 160.3 MB in the end (delta: -60.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.11 ms. Allocated memory is still 205.5 MB. Free memory was 160.3 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.43 ms. Allocated memory is still 205.5 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.73 ms. Allocated memory is still 205.5 MB. Free memory was 156.9 MB in the beginning and 134.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5916.99 ms. Allocated memory was 205.5 MB in the beginning and 375.4 MB in the end (delta: 169.9 MB). Free memory was 134.1 MB in the beginning and 148.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 155.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 800 SDtfs, 1301 SDslu, 2753 SDs, 0 SdLazy, 377 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7266occurred 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: 0.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 3560 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 344 ConstructedInterpolants, 0 QuantifiedInterpolants, 50948 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...