/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 15:05:40,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:05:40,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:05:40,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:05:40,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:05:40,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:05:40,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:05:40,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:05:40,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:05:40,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:05:40,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:05:40,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:05:40,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:05:40,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:05:40,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:05:40,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:05:40,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:05:40,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:05:40,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:05:40,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:05:40,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:05:40,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:05:40,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:05:40,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:05:40,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 15:05:40,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 15:05:40,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 15:05:40,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 15:05:40,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 15:05:40,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 15:05:40,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 15:05:40,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 15:05:40,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 15:05:40,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 15:05:40,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 15:05:40,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 15:05:40,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 15:05:40,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 15:05:40,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:05:40,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:05:40,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:05:40,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 15:05:40,371 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:05:40,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:05:40,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:05:40,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:05:40,373 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:05:40,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:05:40,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:05:40,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:05:40,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:05:40,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:05:40,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:05:40,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:05:40,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:05:40,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:05:40,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:05:40,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:05:40,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:05:40,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:05:40,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:05:40,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:05:40,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:05:40,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:05:40,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:05:40,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:05:40,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:05:40,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:05:40,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:05:40,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:05:40,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:05:40,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:05:40,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:05:40,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:05:40,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:05:40,691 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:05:40,691 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:05:40,692 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-11 15:05:40,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff6f3184/149f5adf1cb7404e8b0694fd3616efdd/FLAGce220a13c [2020-10-11 15:05:41,239 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:05:41,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-11 15:05:41,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff6f3184/149f5adf1cb7404e8b0694fd3616efdd/FLAGce220a13c [2020-10-11 15:05:41,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff6f3184/149f5adf1cb7404e8b0694fd3616efdd [2020-10-11 15:05:41,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:05:41,537 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:05:41,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:05:41,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:05:41,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:05:41,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:05:41" (1/1) ... [2020-10-11 15:05:41,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a1cbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:41, skipping insertion in model container [2020-10-11 15:05:41,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:05:41" (1/1) ... [2020-10-11 15:05:41,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:05:41,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:05:42,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:05:42,170 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:05:42,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:05:42,362 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:05:42,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:42 WrapperNode [2020-10-11 15:05:42,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:05:42,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:05:42,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:05:42,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:05:42,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:42" (1/1) ... [2020-10-11 15:05:42,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:42" (1/1) ... [2020-10-11 15:05:42,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:05:42,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:05:42,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:05:42,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:05:42,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:42" (1/1) ... [2020-10-11 15:05:42,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:42" (1/1) ... [2020-10-11 15:05:42,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:42" (1/1) ... [2020-10-11 15:05:42,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:42" (1/1) ... [2020-10-11 15:05:42,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:42" (1/1) ... [2020-10-11 15:05:42,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:42" (1/1) ... [2020-10-11 15:05:42,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:42" (1/1) ... [2020-10-11 15:05:42,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:05:42,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:05:42,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:05:42,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:05:42,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:05:42,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:05:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 15:05:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:05:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:05:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 15:05:42,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 15:05:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 15:05:42,548 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 15:05:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 15:05:42,549 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 15:05:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-11 15:05:42,549 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-11 15:05:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 15:05:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:05:42,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:05:42,552 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:05:42,930 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:05:42,931 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 15:05:42,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:05:42 BoogieIcfgContainer [2020-10-11 15:05:42,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:05:42,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:05:42,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:05:42,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:05:42,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:05:41" (1/3) ... [2020-10-11 15:05:42,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63021032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:05:42, skipping insertion in model container [2020-10-11 15:05:42,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:42" (2/3) ... [2020-10-11 15:05:42,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63021032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:05:42, skipping insertion in model container [2020-10-11 15:05:42,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:05:42" (3/3) ... [2020-10-11 15:05:42,945 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-10-11 15:05:42,957 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:05:42,957 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:05:42,965 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:05:42,966 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:05:42,997 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:42,997 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:42,997 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:42,997 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:42,998 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:42,998 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:42,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:42,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:42,999 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:42,999 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,000 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,001 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,001 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,001 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,001 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,001 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,002 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,002 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,002 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,002 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,003 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,003 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,007 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,007 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,007 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,008 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,014 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,014 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,015 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,015 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,017 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,018 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,018 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,018 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,021 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,021 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:43,038 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-11 15:05:43,055 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:05:43,055 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:05:43,056 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:05:43,056 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:05:43,056 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:05:43,056 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:05:43,056 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:05:43,056 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:05:43,069 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:05:43,072 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-11 15:05:43,074 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-11 15:05:43,077 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-11 15:05:43,127 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-11 15:05:43,128 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 15:05:43,134 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-11 15:05:43,138 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-11 15:05:44,699 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-11 15:05:44,699 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-11 15:05:44,707 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-11 15:05:44,770 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-11 15:05:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-11 15:05:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 15:05:44,784 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:44,785 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:44,786 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:44,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-11 15:05:44,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:44,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560414202] [2020-10-11 15:05:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:44,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560414202] [2020-10-11 15:05:44,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:44,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:05:44,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574451217] [2020-10-11 15:05:44,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 15:05:44,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:45,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 15:05:45,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 15:05:45,016 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-11 15:05:45,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:45,058 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-11 15:05:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 15:05:45,059 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-11 15:05:45,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:45,087 INFO L225 Difference]: With dead ends: 850 [2020-10-11 15:05:45,087 INFO L226 Difference]: Without dead ends: 706 [2020-10-11 15:05:45,089 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 15:05:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-11 15:05:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-11 15:05:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-11 15:05:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-11 15:05:45,204 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-11 15:05:45,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:45,207 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-11 15:05:45,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 15:05:45,207 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-11 15:05:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 15:05:45,211 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:45,212 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:45,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:05:45,213 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:45,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:45,213 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-11 15:05:45,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:45,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478328945] [2020-10-11 15:05:45,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:45,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478328945] [2020-10-11 15:05:45,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:45,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:05:45,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372545362] [2020-10-11 15:05:45,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:45,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:45,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:45,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:45,355 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-11 15:05:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:45,403 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-11 15:05:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:45,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-11 15:05:45,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:45,410 INFO L225 Difference]: With dead ends: 802 [2020-10-11 15:05:45,411 INFO L226 Difference]: Without dead ends: 658 [2020-10-11 15:05:45,412 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-11 15:05:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-11 15:05:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-11 15:05:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-11 15:05:45,443 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-11 15:05:45,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:45,444 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-11 15:05:45,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:45,444 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-11 15:05:45,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 15:05:45,447 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:45,447 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:45,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 15:05:45,447 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:45,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-10-11 15:05:45,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:45,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887545302] [2020-10-11 15:05:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:45,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:45,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887545302] [2020-10-11 15:05:45,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:45,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:05:45,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314350324] [2020-10-11 15:05:45,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:45,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:45,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:45,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:45,559 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-11 15:05:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:45,586 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-10-11 15:05:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:45,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-11 15:05:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:45,591 INFO L225 Difference]: With dead ends: 718 [2020-10-11 15:05:45,591 INFO L226 Difference]: Without dead ends: 598 [2020-10-11 15:05:45,592 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-11 15:05:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-10-11 15:05:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-11 15:05:45,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-10-11 15:05:45,614 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-10-11 15:05:45,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:45,614 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-10-11 15:05:45,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:45,614 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-10-11 15:05:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:05:45,616 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:45,616 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:45,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 15:05:45,616 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:45,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:45,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-10-11 15:05:45,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:45,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397248933] [2020-10-11 15:05:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:45,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397248933] [2020-10-11 15:05:45,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:45,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:05:45,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574038919] [2020-10-11 15:05:45,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:45,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:45,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:45,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:45,671 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-10-11 15:05:45,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:45,711 INFO L93 Difference]: Finished difference Result 668 states and 2153 transitions. [2020-10-11 15:05:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:45,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-11 15:05:45,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:45,717 INFO L225 Difference]: With dead ends: 668 [2020-10-11 15:05:45,717 INFO L226 Difference]: Without dead ends: 578 [2020-10-11 15:05:45,718 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:45,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-11 15:05:45,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-10-11 15:05:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-11 15:05:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-10-11 15:05:45,738 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-10-11 15:05:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:45,738 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-10-11 15:05:45,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-10-11 15:05:45,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:05:45,740 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:45,740 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:45,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 15:05:45,741 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:45,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:45,741 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-10-11 15:05:45,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:45,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83283334] [2020-10-11 15:05:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:45,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83283334] [2020-10-11 15:05:45,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:45,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:05:45,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462942664] [2020-10-11 15:05:45,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:45,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:45,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:45,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:45,808 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-10-11 15:05:45,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:45,847 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-10-11 15:05:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:45,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-11 15:05:45,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:45,852 INFO L225 Difference]: With dead ends: 814 [2020-10-11 15:05:45,852 INFO L226 Difference]: Without dead ends: 618 [2020-10-11 15:05:45,853 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:45,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-11 15:05:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-10-11 15:05:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-11 15:05:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-10-11 15:05:45,873 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-10-11 15:05:45,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:45,873 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-10-11 15:05:45,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-10-11 15:05:45,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:05:45,875 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:45,875 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:45,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 15:05:45,876 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:45,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:45,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-10-11 15:05:45,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:45,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338376506] [2020-10-11 15:05:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:45,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338376506] [2020-10-11 15:05:45,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:45,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:05:45,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750872704] [2020-10-11 15:05:45,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:45,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:45,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:45,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:45,924 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 4 states. [2020-10-11 15:05:45,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:45,947 INFO L93 Difference]: Finished difference Result 562 states and 1746 transitions. [2020-10-11 15:05:45,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:45,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-11 15:05:45,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:45,951 INFO L225 Difference]: With dead ends: 562 [2020-10-11 15:05:45,952 INFO L226 Difference]: Without dead ends: 514 [2020-10-11 15:05:45,952 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:45,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-11 15:05:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-10-11 15:05:45,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-11 15:05:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1618 transitions. [2020-10-11 15:05:45,968 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1618 transitions. Word has length 14 [2020-10-11 15:05:45,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:45,969 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 1618 transitions. [2020-10-11 15:05:45,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:45,969 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1618 transitions. [2020-10-11 15:05:45,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:05:45,971 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:45,971 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:45,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 15:05:45,971 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:45,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:45,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-10-11 15:05:45,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:45,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086114159] [2020-10-11 15:05:45,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:46,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086114159] [2020-10-11 15:05:46,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:46,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:05:46,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161027509] [2020-10-11 15:05:46,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:05:46,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:46,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:05:46,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:46,025 INFO L87 Difference]: Start difference. First operand 514 states and 1618 transitions. Second operand 5 states. [2020-10-11 15:05:46,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:46,062 INFO L93 Difference]: Finished difference Result 778 states and 2412 transitions. [2020-10-11 15:05:46,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:46,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-11 15:05:46,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:46,066 INFO L225 Difference]: With dead ends: 778 [2020-10-11 15:05:46,066 INFO L226 Difference]: Without dead ends: 418 [2020-10-11 15:05:46,067 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:05:46,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-11 15:05:46,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-10-11 15:05:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-11 15:05:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1276 transitions. [2020-10-11 15:05:46,080 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1276 transitions. Word has length 15 [2020-10-11 15:05:46,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:46,081 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1276 transitions. [2020-10-11 15:05:46,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:05:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1276 transitions. [2020-10-11 15:05:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:05:46,082 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:46,082 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:46,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 15:05:46,083 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:46,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:46,083 INFO L82 PathProgramCache]: Analyzing trace with hash -99110680, now seen corresponding path program 2 times [2020-10-11 15:05:46,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:46,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806275610] [2020-10-11 15:05:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:46,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806275610] [2020-10-11 15:05:46,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:46,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:05:46,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667473651] [2020-10-11 15:05:46,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:46,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:46,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:46,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:46,122 INFO L87 Difference]: Start difference. First operand 418 states and 1276 transitions. Second operand 4 states. [2020-10-11 15:05:46,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:46,153 INFO L93 Difference]: Finished difference Result 598 states and 1736 transitions. [2020-10-11 15:05:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:46,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-11 15:05:46,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:46,157 INFO L225 Difference]: With dead ends: 598 [2020-10-11 15:05:46,157 INFO L226 Difference]: Without dead ends: 442 [2020-10-11 15:05:46,158 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:46,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-11 15:05:46,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 394. [2020-10-11 15:05:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-11 15:05:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1140 transitions. [2020-10-11 15:05:46,174 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1140 transitions. Word has length 15 [2020-10-11 15:05:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:46,174 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1140 transitions. [2020-10-11 15:05:46,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:46,175 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1140 transitions. [2020-10-11 15:05:46,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:05:46,176 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:46,176 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:46,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 15:05:46,177 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:46,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:46,177 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-10-11 15:05:46,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:46,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944885962] [2020-10-11 15:05:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:46,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944885962] [2020-10-11 15:05:46,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:46,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:05:46,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260208381] [2020-10-11 15:05:46,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:05:46,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:46,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:05:46,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:46,241 INFO L87 Difference]: Start difference. First operand 394 states and 1140 transitions. Second operand 5 states. [2020-10-11 15:05:46,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:46,275 INFO L93 Difference]: Finished difference Result 542 states and 1518 transitions. [2020-10-11 15:05:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:46,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-11 15:05:46,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:46,277 INFO L225 Difference]: With dead ends: 542 [2020-10-11 15:05:46,277 INFO L226 Difference]: Without dead ends: 254 [2020-10-11 15:05:46,278 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:05:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-11 15:05:46,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-11 15:05:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-11 15:05:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-10-11 15:05:46,286 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-10-11 15:05:46,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:46,287 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-10-11 15:05:46,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:05:46,287 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-10-11 15:05:46,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:05:46,288 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:46,288 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:46,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 15:05:46,288 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:46,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:46,289 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-10-11 15:05:46,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:46,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378516630] [2020-10-11 15:05:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:46,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378516630] [2020-10-11 15:05:46,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:46,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:05:46,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825458065] [2020-10-11 15:05:46,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:46,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:46,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:46,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:46,347 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 4 states. [2020-10-11 15:05:46,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:46,380 INFO L93 Difference]: Finished difference Result 302 states and 756 transitions. [2020-10-11 15:05:46,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:46,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-11 15:05:46,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:46,383 INFO L225 Difference]: With dead ends: 302 [2020-10-11 15:05:46,383 INFO L226 Difference]: Without dead ends: 229 [2020-10-11 15:05:46,383 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:46,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-11 15:05:46,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-10-11 15:05:46,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-11 15:05:46,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 581 transitions. [2020-10-11 15:05:46,391 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 581 transitions. Word has length 15 [2020-10-11 15:05:46,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:46,391 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 581 transitions. [2020-10-11 15:05:46,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:46,391 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 581 transitions. [2020-10-11 15:05:46,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 15:05:46,392 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:46,392 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:46,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 15:05:46,393 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:46,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-10-11 15:05:46,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:46,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608395045] [2020-10-11 15:05:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:46,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:46,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608395045] [2020-10-11 15:05:46,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:46,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:05:46,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023124707] [2020-10-11 15:05:46,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:05:46,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:46,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:05:46,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:46,449 INFO L87 Difference]: Start difference. First operand 229 states and 581 transitions. Second operand 5 states. [2020-10-11 15:05:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:46,497 INFO L93 Difference]: Finished difference Result 227 states and 514 transitions. [2020-10-11 15:05:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:05:46,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-11 15:05:46,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:46,499 INFO L225 Difference]: With dead ends: 227 [2020-10-11 15:05:46,499 INFO L226 Difference]: Without dead ends: 171 [2020-10-11 15:05:46,500 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:05:46,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-11 15:05:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-11 15:05:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-11 15:05:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-10-11 15:05:46,505 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 16 [2020-10-11 15:05:46,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:46,505 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-10-11 15:05:46,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:05:46,506 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-10-11 15:05:46,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 15:05:46,506 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:46,507 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:46,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 15:05:46,507 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:46,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:46,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-11 15:05:46,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:46,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637141322] [2020-10-11 15:05:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:46,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637141322] [2020-10-11 15:05:46,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:46,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:05:46,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549139485] [2020-10-11 15:05:46,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:05:46,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:46,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:05:46,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:05:46,566 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-10-11 15:05:46,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:46,619 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-10-11 15:05:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 15:05:46,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-11 15:05:46,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:46,620 INFO L225 Difference]: With dead ends: 147 [2020-10-11 15:05:46,620 INFO L226 Difference]: Without dead ends: 107 [2020-10-11 15:05:46,621 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:05:46,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-11 15:05:46,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-11 15:05:46,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-11 15:05:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-10-11 15:05:46,625 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-10-11 15:05:46,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:46,625 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-10-11 15:05:46,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:05:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-10-11 15:05:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:05:46,626 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:46,626 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:46,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 15:05:46,626 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:46,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:46,627 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-11 15:05:46,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:46,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71677182] [2020-10-11 15:05:46,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:46,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71677182] [2020-10-11 15:05:46,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:46,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:05:46,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444845940] [2020-10-11 15:05:46,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:05:46,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:46,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:05:46,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:46,710 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-10-11 15:05:46,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:46,747 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-10-11 15:05:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:05:46,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-11 15:05:46,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:46,748 INFO L225 Difference]: With dead ends: 121 [2020-10-11 15:05:46,748 INFO L226 Difference]: Without dead ends: 105 [2020-10-11 15:05:46,749 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:05:46,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-11 15:05:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-11 15:05:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-11 15:05:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-10-11 15:05:46,753 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-10-11 15:05:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:46,753 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-10-11 15:05:46,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:05:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-10-11 15:05:46,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:05:46,754 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:46,754 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:46,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-11 15:05:46,755 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:46,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:46,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-11 15:05:46,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:46,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339078049] [2020-10-11 15:05:46,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:46,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339078049] [2020-10-11 15:05:46,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:46,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 15:05:46,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748025179] [2020-10-11 15:05:46,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:05:46,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:46,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:05:46,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:05:46,847 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 7 states. [2020-10-11 15:05:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:46,894 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-10-11 15:05:46,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 15:05:46,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-11 15:05:46,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:46,894 INFO L225 Difference]: With dead ends: 93 [2020-10-11 15:05:46,894 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 15:05:46,895 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-11 15:05:46,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 15:05:46,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 15:05:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 15:05:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 15:05:46,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-11 15:05:46,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:46,897 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 15:05:46,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:05:46,897 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 15:05:46,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 15:05:46,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-11 15:05:46,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 03:05:46 BasicIcfg [2020-10-11 15:05:46,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 15:05:46,903 INFO L168 Benchmark]: Toolchain (without parser) took 5365.28 ms. Allocated memory was 253.8 MB in the beginning and 421.0 MB in the end (delta: 167.2 MB). Free memory was 209.1 MB in the beginning and 273.7 MB in the end (delta: -64.5 MB). Peak memory consumption was 102.7 MB. Max. memory is 14.2 GB. [2020-10-11 15:05:46,903 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 15:05:46,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 826.35 ms. Allocated memory was 253.8 MB in the beginning and 322.4 MB in the end (delta: 68.7 MB). Free memory was 209.1 MB in the beginning and 273.4 MB in the end (delta: -64.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. [2020-10-11 15:05:46,905 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.78 ms. Allocated memory is still 322.4 MB. Free memory was 273.4 MB in the beginning and 270.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:05:46,906 INFO L168 Benchmark]: Boogie Preprocessor took 24.83 ms. Allocated memory is still 322.4 MB. Free memory was 270.9 MB in the beginning and 268.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:05:46,906 INFO L168 Benchmark]: RCFGBuilder took 459.88 ms. Allocated memory is still 322.4 MB. Free memory was 268.4 MB in the beginning and 243.9 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-11 15:05:46,907 INFO L168 Benchmark]: TraceAbstraction took 3963.75 ms. Allocated memory was 322.4 MB in the beginning and 421.0 MB in the end (delta: 98.6 MB). Free memory was 243.9 MB in the beginning and 273.7 MB in the end (delta: -29.7 MB). Peak memory consumption was 68.8 MB. Max. memory is 14.2 GB. [2020-10-11 15:05:46,911 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 826.35 ms. Allocated memory was 253.8 MB in the beginning and 322.4 MB in the end (delta: 68.7 MB). Free memory was 209.1 MB in the beginning and 273.4 MB in the end (delta: -64.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 82.78 ms. Allocated memory is still 322.4 MB. Free memory was 273.4 MB in the beginning and 270.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.83 ms. Allocated memory is still 322.4 MB. Free memory was 270.9 MB in the beginning and 268.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 459.88 ms. Allocated memory is still 322.4 MB. Free memory was 268.4 MB in the beginning and 243.9 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3963.75 ms. Allocated memory was 322.4 MB in the beginning and 421.0 MB in the end (delta: 98.6 MB). Free memory was 243.9 MB in the beginning and 273.7 MB in the end (delta: -29.7 MB). Peak memory consumption was 68.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1223 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 103 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 91 PlacesBefore, 39 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 3057 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 369 SDtfs, 330 SDslu, 594 SDs, 0 SdLazy, 226 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 8005 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...