/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:29:43,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:29:43,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:29:43,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:29:43,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:29:43,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:29:43,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:29:43,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:29:43,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:29:43,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:29:43,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:29:43,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:29:43,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:29:43,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:29:43,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:29:43,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:29:43,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:29:43,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:29:43,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:29:43,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:29:43,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:29:43,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:29:43,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:29:43,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:29:43,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:29:43,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:29:43,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:29:43,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:29:43,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:29:43,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:29:43,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:29:43,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:29:43,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:29:43,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:29:43,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:29:43,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:29:43,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:29:43,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:29:43,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:29:43,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:29:43,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:29:43,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:29:43,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:29:43,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:29:43,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:29:43,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:29:43,501 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:29:43,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:29:43,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:29:43,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:29:43,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:29:43,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:29:43,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:29:43,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:29:43,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:29:43,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:29:43,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:29:43,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:29:43,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:29:43,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:29:43,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:29:43,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:29:43,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:29:43,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:29:43,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:29:43,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:29:43,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:29:43,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:29:43,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:29:43,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:29:43,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:29:43,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:29:43,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:29:44,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:29:44,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:29:44,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:29:44,013 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:29:44,015 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-09-11 15:29:44,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77b8d81b7/1919722c046d423cace243aefae9eb5b/FLAG9fe10e2cc [2020-09-11 15:29:44,748 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:29:44,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-09-11 15:29:44,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77b8d81b7/1919722c046d423cace243aefae9eb5b/FLAG9fe10e2cc [2020-09-11 15:29:45,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77b8d81b7/1919722c046d423cace243aefae9eb5b [2020-09-11 15:29:45,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:29:45,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:29:45,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:29:45,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:29:45,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:29:45,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:29:45" (1/1) ... [2020-09-11 15:29:45,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b6ae98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45, skipping insertion in model container [2020-09-11 15:29:45,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:29:45" (1/1) ... [2020-09-11 15:29:45,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:29:45,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:29:45,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:29:45,759 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:29:45,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:29:45,941 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:29:45,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45 WrapperNode [2020-09-11 15:29:45,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:29:45,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:29:45,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:29:45,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:29:45,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45" (1/1) ... [2020-09-11 15:29:45,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45" (1/1) ... [2020-09-11 15:29:46,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:29:46,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:29:46,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:29:46,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:29:46,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45" (1/1) ... [2020-09-11 15:29:46,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45" (1/1) ... [2020-09-11 15:29:46,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45" (1/1) ... [2020-09-11 15:29:46,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45" (1/1) ... [2020-09-11 15:29:46,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45" (1/1) ... [2020-09-11 15:29:46,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45" (1/1) ... [2020-09-11 15:29:46,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45" (1/1) ... [2020-09-11 15:29:46,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:29:46,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:29:46,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:29:46,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:29:46,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 15:29:46,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:29:46,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:29:46,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:29:46,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:29:46,116 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:29:46,116 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:29:46,116 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:29:46,116 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:29:46,116 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:29:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:29:46,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:29:46,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:29:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:29:46,120 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:29:46,508 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:29:46,508 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:29:46,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:29:46 BoogieIcfgContainer [2020-09-11 15:29:46,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:29:46,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:29:46,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:29:46,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:29:46,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:29:45" (1/3) ... [2020-09-11 15:29:46,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ac44ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:29:46, skipping insertion in model container [2020-09-11 15:29:46,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:45" (2/3) ... [2020-09-11 15:29:46,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ac44ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:29:46, skipping insertion in model container [2020-09-11 15:29:46,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:29:46" (3/3) ... [2020-09-11 15:29:46,524 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-09-11 15:29:46,533 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:29:46,533 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:29:46,542 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:29:46,543 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:29:46,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,573 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,573 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,574 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,574 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,575 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,575 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,576 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,577 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,577 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,582 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,583 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,583 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,583 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,594 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,594 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,595 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,598 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,599 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,599 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,599 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:46,625 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:29:46,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:29:46,651 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:29:46,651 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:29:46,651 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:29:46,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:29:46,651 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:29:46,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:29:46,652 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:29:46,669 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-11 15:29:46,671 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-11 15:29:46,720 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-11 15:29:46,721 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:29:46,727 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-11 15:29:46,730 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-11 15:29:46,750 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-11 15:29:46,751 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:29:46,751 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-11 15:29:46,753 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-11 15:29:46,755 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:29:48,301 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-09-11 15:29:48,301 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-11 15:29:48,306 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 15:29:48,332 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-09-11 15:29:48,335 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-09-11 15:29:48,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:29:48,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:48,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:48,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:48,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:48,354 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-09-11 15:29:48,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:48,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036214149] [2020-09-11 15:29:48,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:48,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036214149] [2020-09-11 15:29:48,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:48,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:29:48,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837111765] [2020-09-11 15:29:48,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 15:29:48,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:48,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 15:29:48,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 15:29:48,614 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-09-11 15:29:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:48,653 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-09-11 15:29:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 15:29:48,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-11 15:29:48,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:48,674 INFO L225 Difference]: With dead ends: 274 [2020-09-11 15:29:48,675 INFO L226 Difference]: Without dead ends: 226 [2020-09-11 15:29:48,677 INFO L675 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 [2020-09-11 15:29:48,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-11 15:29:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-11 15:29:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-11 15:29:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-09-11 15:29:48,759 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-09-11 15:29:48,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:48,761 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-09-11 15:29:48,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 15:29:48,761 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-09-11 15:29:48,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:29:48,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:48,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:48,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:29:48,764 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:48,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:48,765 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-09-11 15:29:48,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:48,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302770622] [2020-09-11 15:29:48,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:48,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302770622] [2020-09-11 15:29:48,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:48,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:29:48,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173348287] [2020-09-11 15:29:48,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:48,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:48,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:48,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:48,965 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-09-11 15:29:48,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:48,999 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-09-11 15:29:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:29:48,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 15:29:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:49,002 INFO L225 Difference]: With dead ends: 250 [2020-09-11 15:29:49,002 INFO L226 Difference]: Without dead ends: 202 [2020-09-11 15:29:49,003 INFO L675 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 [2020-09-11 15:29:49,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-11 15:29:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-11 15:29:49,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-11 15:29:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-09-11 15:29:49,025 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-09-11 15:29:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:49,026 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-09-11 15:29:49,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-09-11 15:29:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:29:49,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:49,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:49,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:29:49,028 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:49,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-09-11 15:29:49,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:49,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972468094] [2020-09-11 15:29:49,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:49,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972468094] [2020-09-11 15:29:49,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:49,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:29:49,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522062082] [2020-09-11 15:29:49,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:49,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:49,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:49,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:49,119 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 4 states. [2020-09-11 15:29:49,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:49,144 INFO L93 Difference]: Finished difference Result 232 states and 608 transitions. [2020-09-11 15:29:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:29:49,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-11 15:29:49,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:49,147 INFO L225 Difference]: With dead ends: 232 [2020-09-11 15:29:49,148 INFO L226 Difference]: Without dead ends: 196 [2020-09-11 15:29:49,148 INFO L675 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 [2020-09-11 15:29:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-11 15:29:49,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-09-11 15:29:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-11 15:29:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-09-11 15:29:49,163 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-09-11 15:29:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:49,163 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-09-11 15:29:49,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-09-11 15:29:49,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:29:49,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:49,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:49,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:29:49,166 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:49,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:49,166 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-09-11 15:29:49,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:49,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122618530] [2020-09-11 15:29:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:49,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122618530] [2020-09-11 15:29:49,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:49,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:29:49,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129615830] [2020-09-11 15:29:49,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:29:49,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:49,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:29:49,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:29:49,285 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 5 states. [2020-09-11 15:29:49,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:49,349 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-09-11 15:29:49,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:29:49,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-11 15:29:49,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:49,352 INFO L225 Difference]: With dead ends: 255 [2020-09-11 15:29:49,352 INFO L226 Difference]: Without dead ends: 150 [2020-09-11 15:29:49,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-11 15:29:49,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-11 15:29:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-11 15:29:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-11 15:29:49,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-09-11 15:29:49,365 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-09-11 15:29:49,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:49,365 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-09-11 15:29:49,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:29:49,366 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-09-11 15:29:49,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:29:49,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:49,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:49,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:29:49,368 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:49,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:49,368 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-09-11 15:29:49,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:49,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792264094] [2020-09-11 15:29:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:49,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:49,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792264094] [2020-09-11 15:29:49,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:49,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:29:49,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994720116] [2020-09-11 15:29:49,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:49,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:49,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:49,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:49,440 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-09-11 15:29:49,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:49,481 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-09-11 15:29:49,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:29:49,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 15:29:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:49,484 INFO L225 Difference]: With dead ends: 164 [2020-09-11 15:29:49,487 INFO L226 Difference]: Without dead ends: 128 [2020-09-11 15:29:49,487 INFO L675 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 [2020-09-11 15:29:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-11 15:29:49,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-09-11 15:29:49,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-11 15:29:49,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-09-11 15:29:49,500 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-09-11 15:29:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:49,505 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-09-11 15:29:49,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-09-11 15:29:49,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:29:49,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:49,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:49,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:29:49,507 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:49,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:49,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-09-11 15:29:49,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:49,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729325662] [2020-09-11 15:29:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:49,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729325662] [2020-09-11 15:29:49,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:49,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:29:49,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453385720] [2020-09-11 15:29:49,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:29:49,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:49,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:29:49,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:29:49,634 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-09-11 15:29:49,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:49,686 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-09-11 15:29:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:29:49,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 15:29:49,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:49,688 INFO L225 Difference]: With dead ends: 116 [2020-09-11 15:29:49,688 INFO L226 Difference]: Without dead ends: 92 [2020-09-11 15:29:49,688 INFO L675 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 [2020-09-11 15:29:49,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-11 15:29:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-11 15:29:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-11 15:29:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-09-11 15:29:49,693 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-09-11 15:29:49,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:49,693 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-09-11 15:29:49,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:29:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-09-11 15:29:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:29:49,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:49,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:49,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:29:49,695 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:49,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:49,696 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-09-11 15:29:49,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:49,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475055431] [2020-09-11 15:29:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:49,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475055431] [2020-09-11 15:29:49,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:49,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:29:49,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215631381] [2020-09-11 15:29:49,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:49,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:49,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:49,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:49,751 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-09-11 15:29:49,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:49,775 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-09-11 15:29:49,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:29:49,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 15:29:49,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:49,777 INFO L225 Difference]: With dead ends: 120 [2020-09-11 15:29:49,777 INFO L226 Difference]: Without dead ends: 94 [2020-09-11 15:29:49,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:29:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-11 15:29:49,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-09-11 15:29:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-11 15:29:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-09-11 15:29:49,782 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-09-11 15:29:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:49,782 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-09-11 15:29:49,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-09-11 15:29:49,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:29:49,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:49,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:49,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:29:49,784 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:49,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-09-11 15:29:49,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:49,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010785308] [2020-09-11 15:29:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:49,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010785308] [2020-09-11 15:29:49,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:49,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 15:29:49,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654962913] [2020-09-11 15:29:49,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:29:49,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:49,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:29:49,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:29:49,892 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 9 states. [2020-09-11 15:29:50,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:50,042 INFO L93 Difference]: Finished difference Result 119 states and 221 transitions. [2020-09-11 15:29:50,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-11 15:29:50,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-11 15:29:50,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:50,043 INFO L225 Difference]: With dead ends: 119 [2020-09-11 15:29:50,044 INFO L226 Difference]: Without dead ends: 76 [2020-09-11 15:29:50,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-09-11 15:29:50,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-11 15:29:50,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-09-11 15:29:50,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-11 15:29:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 123 transitions. [2020-09-11 15:29:50,049 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 123 transitions. Word has length 15 [2020-09-11 15:29:50,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:50,050 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 123 transitions. [2020-09-11 15:29:50,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:29:50,050 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 123 transitions. [2020-09-11 15:29:50,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:29:50,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:50,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:50,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:29:50,054 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:50,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:50,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-09-11 15:29:50,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:50,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537781579] [2020-09-11 15:29:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:50,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537781579] [2020-09-11 15:29:50,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:50,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:29:50,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5539756] [2020-09-11 15:29:50,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:29:50,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:50,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:29:50,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:29:50,172 INFO L87 Difference]: Start difference. First operand 72 states and 123 transitions. Second operand 6 states. [2020-09-11 15:29:50,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:50,213 INFO L93 Difference]: Finished difference Result 65 states and 108 transitions. [2020-09-11 15:29:50,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:29:50,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-11 15:29:50,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:50,214 INFO L225 Difference]: With dead ends: 65 [2020-09-11 15:29:50,215 INFO L226 Difference]: Without dead ends: 28 [2020-09-11 15:29:50,215 INFO L675 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 [2020-09-11 15:29:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-11 15:29:50,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-11 15:29:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-11 15:29:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-09-11 15:29:50,218 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-09-11 15:29:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:50,218 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-09-11 15:29:50,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:29:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-09-11 15:29:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:29:50,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:50,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:50,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 15:29:50,220 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:50,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:50,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1777188338, now seen corresponding path program 1 times [2020-09-11 15:29:50,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:50,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363530164] [2020-09-11 15:29:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:50,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363530164] [2020-09-11 15:29:50,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:50,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:29:50,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10880663] [2020-09-11 15:29:50,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:29:50,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:50,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:29:50,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:29:50,297 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 5 states. [2020-09-11 15:29:50,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:50,326 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-09-11 15:29:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:29:50,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 15:29:50,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:50,326 INFO L225 Difference]: With dead ends: 27 [2020-09-11 15:29:50,327 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:29:50,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:29:50,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:29:50,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:29:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:29:50,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:29:50,328 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 15:29:50,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:50,328 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:29:50,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:29:50,328 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:29:50,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:29:50,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 15:29:50,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:29:50 BasicIcfg [2020-09-11 15:29:50,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:29:50,338 INFO L168 Benchmark]: Toolchain (without parser) took 5288.59 ms. Allocated memory was 147.3 MB in the beginning and 245.9 MB in the end (delta: 98.6 MB). Free memory was 101.8 MB in the beginning and 115.9 MB in the end (delta: -14.2 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:50,338 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:29:50,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 890.20 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 101.4 MB in the beginning and 159.1 MB in the end (delta: -57.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:50,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.42 ms. Allocated memory is still 203.4 MB. Free memory was 159.1 MB in the beginning and 156.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:50,341 INFO L168 Benchmark]: Boogie Preprocessor took 31.17 ms. Allocated memory is still 203.4 MB. Free memory was 156.4 MB in the beginning and 155.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:50,342 INFO L168 Benchmark]: RCFGBuilder took 480.53 ms. Allocated memory is still 203.4 MB. Free memory was 155.1 MB in the beginning and 133.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:50,343 INFO L168 Benchmark]: TraceAbstraction took 3818.88 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 132.4 MB in the beginning and 115.9 MB in the end (delta: 16.5 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:50,347 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 890.20 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 101.4 MB in the beginning and 159.1 MB in the end (delta: -57.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.42 ms. Allocated memory is still 203.4 MB. Free memory was 159.1 MB in the beginning and 156.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.17 ms. Allocated memory is still 203.4 MB. Free memory was 156.4 MB in the beginning and 155.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 480.53 ms. Allocated memory is still 203.4 MB. Free memory was 155.1 MB in the beginning and 133.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3818.88 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 132.4 MB in the beginning and 115.9 MB in the end (delta: 16.5 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 609 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 196 SDtfs, 191 SDslu, 357 SDs, 0 SdLazy, 212 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 4422 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...