/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:03:14,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:03:14,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:03:14,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:03:14,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:03:14,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:03:14,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:03:14,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:03:14,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:03:14,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:03:14,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:03:14,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:03:14,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:03:14,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:03:14,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:03:14,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:03:14,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:03:14,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:03:14,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:03:14,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:03:14,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:03:14,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:03:14,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:03:14,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:03:14,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:03:14,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:03:14,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:03:14,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:03:14,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:03:14,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:03:14,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:03:14,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:03:14,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:03:14,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:03:14,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:03:14,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:03:14,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:03:14,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:03:14,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:03:14,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:03:14,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:03:14,348 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 [2020-04-17 18:03:14,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:03:14,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:03:14,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:03:14,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:03:14,370 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:03:14,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:03:14,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:03:14,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:03:14,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:03:14,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:03:14,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:03:14,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:03:14,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:03:14,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:03:14,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:03:14,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:03:14,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:03:14,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:03:14,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:03:14,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:03:14,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:03:14,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:03:14,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:03:14,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:03:14,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:03:14,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:03:14,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:03:14,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:03:14,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 18:03:14,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:03:14,645 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:03:14,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:03:14,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:03:14,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:03:14,662 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:03:14,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-04-17 18:03:14,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2deb7cd5e/eef7deb69f134e7b8dd98653f18d44df/FLAGe4077a957 [2020-04-17 18:03:15,234 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:03:15,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-04-17 18:03:15,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2deb7cd5e/eef7deb69f134e7b8dd98653f18d44df/FLAGe4077a957 [2020-04-17 18:03:15,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2deb7cd5e/eef7deb69f134e7b8dd98653f18d44df [2020-04-17 18:03:15,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:03:15,572 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:03:15,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:03:15,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:03:15,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:03:15,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:03:15" (1/1) ... [2020-04-17 18:03:15,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6abf99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:15, skipping insertion in model container [2020-04-17 18:03:15,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:03:15" (1/1) ... [2020-04-17 18:03:15,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:03:15,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:03:16,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:03:16,115 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:03:16,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:03:16,239 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:03:16,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:16 WrapperNode [2020-04-17 18:03:16,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:03:16,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:03:16,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:03:16,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:03:16,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:16" (1/1) ... [2020-04-17 18:03:16,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:16" (1/1) ... [2020-04-17 18:03:16,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:03:16,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:03:16,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:03:16,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:03:16,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:16" (1/1) ... [2020-04-17 18:03:16,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:16" (1/1) ... [2020-04-17 18:03:16,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:16" (1/1) ... [2020-04-17 18:03:16,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:16" (1/1) ... [2020-04-17 18:03:16,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:16" (1/1) ... [2020-04-17 18:03:16,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:16" (1/1) ... [2020-04-17 18:03:16,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:16" (1/1) ... [2020-04-17 18:03:16,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:03:16,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:03:16,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:03:16,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:03:16,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:16" (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 [2020-04-17 18:03:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:03:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 18:03:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:03:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:03:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 18:03:16,379 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 18:03:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 18:03:16,379 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 18:03:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 18:03:16,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 18:03:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 18:03:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:03:16,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:03:16,381 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 18:03:16,741 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:03:16,742 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 18:03:16,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:03:16 BoogieIcfgContainer [2020-04-17 18:03:16,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:03:16,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:03:16,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:03:16,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:03:16,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:03:15" (1/3) ... [2020-04-17 18:03:16,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67588f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:03:16, skipping insertion in model container [2020-04-17 18:03:16,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:03:16" (2/3) ... [2020-04-17 18:03:16,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67588f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:03:16, skipping insertion in model container [2020-04-17 18:03:16,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:03:16" (3/3) ... [2020-04-17 18:03:16,753 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-04-17 18:03:16,764 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:03:16,764 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:03:16,771 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 18:03:16,772 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:03:16,798 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,798 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,799 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,799 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,799 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,800 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,800 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,800 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,801 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,801 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,801 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,802 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,802 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,802 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,803 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,803 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,804 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,805 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,809 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,809 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,810 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,810 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,818 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,819 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,819 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,819 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,827 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,827 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,828 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,828 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:03:16,841 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 18:03:16,857 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:03:16,857 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:03:16,857 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:03:16,857 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:03:16,857 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:03:16,858 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:03:16,858 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:03:16,858 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:03:16,873 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 18:03:16,875 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 18:03:16,931 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 18:03:16,931 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:03:16,936 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 51 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. [2020-04-17 18:03:16,939 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 18:03:16,958 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 18:03:16,958 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:03:16,958 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 51 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. [2020-04-17 18:03:16,961 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 18:03:16,962 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:03:18,672 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-04-17 18:03:18,864 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-17 18:03:18,864 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-17 18:03:18,868 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 18:03:18,894 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 18:03:18,896 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 18:03:18,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 18:03:18,904 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:03:18,905 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:03:18,905 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:03:18,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:03:18,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-17 18:03:18,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:03:18,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101537784] [2020-04-17 18:03:18,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:03:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:03:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:03:19,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101537784] [2020-04-17 18:03:19,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:03:19,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:03:19,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069838624] [2020-04-17 18:03:19,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:03:19,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:03:19,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:03:19,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:03:19,249 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 18:03:19,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:03:19,321 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-04-17 18:03:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:03:19,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 18:03:19,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:03:19,355 INFO L225 Difference]: With dead ends: 294 [2020-04-17 18:03:19,355 INFO L226 Difference]: Without dead ends: 230 [2020-04-17 18:03:19,359 INFO L678 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 [2020-04-17 18:03:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-17 18:03:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-17 18:03:19,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-17 18:03:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-04-17 18:03:19,427 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-04-17 18:03:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:03:19,432 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-04-17 18:03:19,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:03:19,432 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-04-17 18:03:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:03:19,434 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:03:19,434 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:03:19,434 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:03:19,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:03:19,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1775895904, now seen corresponding path program 1 times [2020-04-17 18:03:19,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:03:19,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194311939] [2020-04-17 18:03:19,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:03:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:03:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:03:19,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194311939] [2020-04-17 18:03:19,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:03:19,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:03:19,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393656541] [2020-04-17 18:03:19,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:03:19,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:03:19,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:03:19,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:03:19,528 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-04-17 18:03:19,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:03:19,545 INFO L93 Difference]: Finished difference Result 344 states and 903 transitions. [2020-04-17 18:03:19,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:03:19,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 18:03:19,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:03:19,549 INFO L225 Difference]: With dead ends: 344 [2020-04-17 18:03:19,549 INFO L226 Difference]: Without dead ends: 254 [2020-04-17 18:03:19,550 INFO L678 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 [2020-04-17 18:03:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-04-17 18:03:19,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2020-04-17 18:03:19,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 18:03:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 570 transitions. [2020-04-17 18:03:19,574 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 570 transitions. Word has length 9 [2020-04-17 18:03:19,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:03:19,574 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 570 transitions. [2020-04-17 18:03:19,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:03:19,574 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 570 transitions. [2020-04-17 18:03:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:03:19,575 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:03:19,576 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:03:19,576 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:03:19,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:03:19,576 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-04-17 18:03:19,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:03:19,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733307210] [2020-04-17 18:03:19,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:03:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:03:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:03:19,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733307210] [2020-04-17 18:03:19,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:03:19,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:03:19,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120320001] [2020-04-17 18:03:19,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:03:19,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:03:19,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:03:19,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:03:19,617 INFO L87 Difference]: Start difference. First operand 218 states and 570 transitions. Second operand 3 states. [2020-04-17 18:03:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:03:19,623 INFO L93 Difference]: Finished difference Result 206 states and 529 transitions. [2020-04-17 18:03:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:03:19,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 18:03:19,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:03:19,626 INFO L225 Difference]: With dead ends: 206 [2020-04-17 18:03:19,626 INFO L226 Difference]: Without dead ends: 206 [2020-04-17 18:03:19,626 INFO L678 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 [2020-04-17 18:03:19,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-04-17 18:03:19,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-04-17 18:03:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-04-17 18:03:19,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 529 transitions. [2020-04-17 18:03:19,641 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 529 transitions. Word has length 9 [2020-04-17 18:03:19,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:03:19,641 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 529 transitions. [2020-04-17 18:03:19,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:03:19,642 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 529 transitions. [2020-04-17 18:03:19,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:03:19,643 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:03:19,643 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:03:19,643 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:03:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:03:19,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1603399558, now seen corresponding path program 1 times [2020-04-17 18:03:19,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:03:19,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393559519] [2020-04-17 18:03:19,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:03:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:03:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:03:19,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393559519] [2020-04-17 18:03:19,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:03:19,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:03:19,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190452058] [2020-04-17 18:03:19,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:03:19,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:03:19,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:03:19,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:03:19,703 INFO L87 Difference]: Start difference. First operand 206 states and 529 transitions. Second operand 4 states. [2020-04-17 18:03:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:03:19,742 INFO L93 Difference]: Finished difference Result 242 states and 592 transitions. [2020-04-17 18:03:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 18:03:19,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 18:03:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:03:19,747 INFO L225 Difference]: With dead ends: 242 [2020-04-17 18:03:19,748 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 18:03:19,748 INFO L678 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 [2020-04-17 18:03:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 18:03:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 18:03:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 18:03:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 338 transitions. [2020-04-17 18:03:19,762 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 338 transitions. Word has length 10 [2020-04-17 18:03:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:03:19,762 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 338 transitions. [2020-04-17 18:03:19,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:03:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 338 transitions. [2020-04-17 18:03:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 18:03:19,764 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:03:19,764 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:03:19,764 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:03:19,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:03:19,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-17 18:03:19,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:03:19,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084175315] [2020-04-17 18:03:19,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:03:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:03:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:03:19,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084175315] [2020-04-17 18:03:19,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:03:19,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:03:19,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788718248] [2020-04-17 18:03:19,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:03:19,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:03:19,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:03:19,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:03:19,817 INFO L87 Difference]: Start difference. First operand 146 states and 338 transitions. Second operand 3 states. [2020-04-17 18:03:19,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:03:19,823 INFO L93 Difference]: Finished difference Result 134 states and 300 transitions. [2020-04-17 18:03:19,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:03:19,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 18:03:19,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:03:19,825 INFO L225 Difference]: With dead ends: 134 [2020-04-17 18:03:19,825 INFO L226 Difference]: Without dead ends: 110 [2020-04-17 18:03:19,826 INFO L678 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 [2020-04-17 18:03:19,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-04-17 18:03:19,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-04-17 18:03:19,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-04-17 18:03:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-04-17 18:03:19,841 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 11 [2020-04-17 18:03:19,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:03:19,841 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-04-17 18:03:19,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:03:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-04-17 18:03:19,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 18:03:19,846 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:03:19,846 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:03:19,846 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:03:19,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:03:19,847 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-04-17 18:03:19,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:03:19,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036563715] [2020-04-17 18:03:19,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:03:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:03:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:03:19,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036563715] [2020-04-17 18:03:19,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:03:19,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:03:19,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085244069] [2020-04-17 18:03:19,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:03:19,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:03:19,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:03:19,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:03:19,985 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-04-17 18:03:20,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:03:20,025 INFO L93 Difference]: Finished difference Result 128 states and 277 transitions. [2020-04-17 18:03:20,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:03:20,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 18:03:20,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:03:20,027 INFO L225 Difference]: With dead ends: 128 [2020-04-17 18:03:20,027 INFO L226 Difference]: Without dead ends: 97 [2020-04-17 18:03:20,028 INFO L678 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 [2020-04-17 18:03:20,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-17 18:03:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-17 18:03:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-17 18:03:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 209 transitions. [2020-04-17 18:03:20,033 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 209 transitions. Word has length 13 [2020-04-17 18:03:20,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:03:20,033 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 209 transitions. [2020-04-17 18:03:20,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:03:20,034 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 209 transitions. [2020-04-17 18:03:20,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 18:03:20,035 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:03:20,035 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:03:20,035 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:03:20,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:03:20,035 INFO L82 PathProgramCache]: Analyzing trace with hash 2052968077, now seen corresponding path program 1 times [2020-04-17 18:03:20,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:03:20,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699402747] [2020-04-17 18:03:20,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:03:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:03:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:03:20,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699402747] [2020-04-17 18:03:20,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:03:20,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:03:20,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322123790] [2020-04-17 18:03:20,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:03:20,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:03:20,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:03:20,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:03:20,139 INFO L87 Difference]: Start difference. First operand 97 states and 209 transitions. Second operand 5 states. [2020-04-17 18:03:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:03:20,191 INFO L93 Difference]: Finished difference Result 99 states and 200 transitions. [2020-04-17 18:03:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:03:20,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 18:03:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:03:20,193 INFO L225 Difference]: With dead ends: 99 [2020-04-17 18:03:20,193 INFO L226 Difference]: Without dead ends: 79 [2020-04-17 18:03:20,193 INFO L678 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 [2020-04-17 18:03:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-04-17 18:03:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-04-17 18:03:20,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-04-17 18:03:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 157 transitions. [2020-04-17 18:03:20,197 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 157 transitions. Word has length 14 [2020-04-17 18:03:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:03:20,197 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 157 transitions. [2020-04-17 18:03:20,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:03:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 157 transitions. [2020-04-17 18:03:20,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:03:20,198 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:03:20,199 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:03:20,199 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:03:20,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:03:20,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1697163721, now seen corresponding path program 1 times [2020-04-17 18:03:20,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:03:20,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998182535] [2020-04-17 18:03:20,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:03:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:03:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:03:20,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998182535] [2020-04-17 18:03:20,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:03:20,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:03:20,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504110107] [2020-04-17 18:03:20,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 18:03:20,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:03:20,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 18:03:20,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 18:03:20,287 INFO L87 Difference]: Start difference. First operand 79 states and 157 transitions. Second operand 6 states. [2020-04-17 18:03:20,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:03:20,340 INFO L93 Difference]: Finished difference Result 76 states and 149 transitions. [2020-04-17 18:03:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 18:03:20,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 18:03:20,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:03:20,342 INFO L225 Difference]: With dead ends: 76 [2020-04-17 18:03:20,342 INFO L226 Difference]: Without dead ends: 69 [2020-04-17 18:03:20,343 INFO L678 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 [2020-04-17 18:03:20,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-04-17 18:03:20,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-04-17 18:03:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-04-17 18:03:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 137 transitions. [2020-04-17 18:03:20,346 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 137 transitions. Word has length 15 [2020-04-17 18:03:20,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:03:20,347 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 137 transitions. [2020-04-17 18:03:20,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 18:03:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 137 transitions. [2020-04-17 18:03:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:03:20,348 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:03:20,348 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:03:20,348 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:03:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:03:20,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-17 18:03:20,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:03:20,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500608029] [2020-04-17 18:03:20,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:03:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:03:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:03:20,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500608029] [2020-04-17 18:03:20,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:03:20,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:03:20,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282430946] [2020-04-17 18:03:20,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:03:20,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:03:20,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:03:20,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:03:20,382 INFO L87 Difference]: Start difference. First operand 69 states and 137 transitions. Second operand 4 states. [2020-04-17 18:03:20,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:03:20,398 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-04-17 18:03:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 18:03:20,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 18:03:20,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:03:20,399 INFO L225 Difference]: With dead ends: 68 [2020-04-17 18:03:20,399 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 18:03:20,400 INFO L678 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 [2020-04-17 18:03:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 18:03:20,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 18:03:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 18:03:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 18:03:20,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 18:03:20,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:03:20,401 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 18:03:20,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:03:20,401 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 18:03:20,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 18:03:20,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 06:03:20 BasicIcfg [2020-04-17 18:03:20,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 18:03:20,407 INFO L168 Benchmark]: Toolchain (without parser) took 4851.92 ms. Allocated memory was 137.9 MB in the beginning and 248.5 MB in the end (delta: 110.6 MB). Free memory was 100.0 MB in the beginning and 151.8 MB in the end (delta: -51.8 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2020-04-17 18:03:20,408 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 18:03:20,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.45 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 97.9 MB in the beginning and 158.3 MB in the end (delta: -60.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-17 18:03:20,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.62 ms. Allocated memory is still 201.3 MB. Free memory was 158.3 MB in the beginning and 156.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 18:03:20,411 INFO L168 Benchmark]: Boogie Preprocessor took 26.84 ms. Allocated memory is still 201.3 MB. Free memory was 156.3 MB in the beginning and 154.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:03:20,411 INFO L168 Benchmark]: RCFGBuilder took 431.71 ms. Allocated memory is still 201.3 MB. Free memory was 154.9 MB in the beginning and 132.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-17 18:03:20,412 INFO L168 Benchmark]: TraceAbstraction took 3658.64 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 132.0 MB in the beginning and 151.8 MB in the end (delta: -19.8 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:03:20,416 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.45 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 97.9 MB in the beginning and 158.3 MB in the end (delta: -60.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.62 ms. Allocated memory is still 201.3 MB. Free memory was 158.3 MB in the beginning and 156.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.84 ms. Allocated memory is still 201.3 MB. Free memory was 156.3 MB in the beginning and 154.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 431.71 ms. Allocated memory is still 201.3 MB. Free memory was 154.9 MB in the beginning and 132.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3658.64 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 132.0 MB in the beginning and 151.8 MB in the end (delta: -19.8 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 677 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 19 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - 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: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 165 SDtfs, 121 SDslu, 180 SDs, 0 SdLazy, 111 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 3817 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...