/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/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:21:31,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:21:31,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:21:31,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:21:31,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:21:31,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:21:31,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:21:31,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:21:31,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:21:31,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:21:31,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:21:31,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:21:31,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:21:31,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:21:31,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:21:31,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:21:31,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:21:31,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:21:31,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:21:31,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:21:31,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:21:31,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:21:31,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:21:31,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:21:31,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:21:31,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:21:31,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:21:31,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:21:31,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:21:31,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:21:31,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:21:31,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:21:31,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:21:31,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:21:31,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:21:31,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:21:31,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:21:31,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:21:31,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:21:31,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:21:31,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:21:31,474 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 15:21:31,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:21:31,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:21:31,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:21:31,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:21:31,502 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:21:31,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:21:31,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:21:31,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:21:31,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:21:31,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:21:31,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:21:31,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:21:31,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:21:31,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:21:31,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:21:31,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:21:31,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:21:31,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:21:31,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:21:31,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:21:31,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:21:31,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:21:31,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:21:31,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:21:31,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:21:31,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:21:31,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:21:31,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:21:31,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:21:31,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:21:31,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:21:31,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:21:31,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:21:31,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:21:31,982 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:21:31,984 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-09-11 15:21:32,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb1031762/09a4e806a644449e8b20980bebbf20cb/FLAG436b6ca5d [2020-09-11 15:21:32,682 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:21:32,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-09-11 15:21:32,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb1031762/09a4e806a644449e8b20980bebbf20cb/FLAG436b6ca5d [2020-09-11 15:21:32,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb1031762/09a4e806a644449e8b20980bebbf20cb [2020-09-11 15:21:32,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:21:32,973 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:21:32,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:21:32,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:21:32,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:21:32,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:21:32" (1/1) ... [2020-09-11 15:21:32,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e2e3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:32, skipping insertion in model container [2020-09-11 15:21:32,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:21:32" (1/1) ... [2020-09-11 15:21:32,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:21:33,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:21:33,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:21:33,731 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:21:33,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:21:33,896 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:21:33,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:33 WrapperNode [2020-09-11 15:21:33,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:21:33,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:21:33,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:21:33,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:21:33,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:33" (1/1) ... [2020-09-11 15:21:33,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:33" (1/1) ... [2020-09-11 15:21:33,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:21:33,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:21:33,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:21:33,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:21:33,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:33" (1/1) ... [2020-09-11 15:21:33,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:33" (1/1) ... [2020-09-11 15:21:33,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:33" (1/1) ... [2020-09-11 15:21:33,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:33" (1/1) ... [2020-09-11 15:21:33,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:33" (1/1) ... [2020-09-11 15:21:33,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:33" (1/1) ... [2020-09-11 15:21:33,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:33" (1/1) ... [2020-09-11 15:21:33,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:21:33,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:21:33,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:21:33,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:21:33,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:33" (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 15:21:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:21:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:21:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:21:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:21:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:21:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:21:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:21:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:21:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:21:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:21:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:21:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:21:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:21:34,079 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 15:21:34,492 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:21:34,492 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:21:34,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:21:34 BoogieIcfgContainer [2020-09-11 15:21:34,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:21:34,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:21:34,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:21:34,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:21:34,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:21:32" (1/3) ... [2020-09-11 15:21:34,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce22156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:21:34, skipping insertion in model container [2020-09-11 15:21:34,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:21:33" (2/3) ... [2020-09-11 15:21:34,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce22156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:21:34, skipping insertion in model container [2020-09-11 15:21:34,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:21:34" (3/3) ... [2020-09-11 15:21:34,508 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2020-09-11 15:21:34,519 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:21:34,519 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:21:34,530 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:21:34,531 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:21:34,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,561 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,563 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,563 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,563 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,563 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,569 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,569 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,569 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,578 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,578 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,578 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,585 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:21:34,609 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:21:34,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:21:34,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:21:34,637 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:21:34,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:21:34,638 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:21:34,638 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:21:34,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:21:34,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:21:34,655 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 15:21:34,658 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 15:21:34,710 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 15:21:34,711 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:21:34,716 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 15:21:34,719 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 15:21:34,742 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 15:21:34,742 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:21:34,743 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 15:21:34,745 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 15:21:34,746 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:21:36,505 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-09-11 15:21:36,506 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-11 15:21:36,511 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-11 15:21:36,538 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 15:21:36,541 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 15:21:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:21:36,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:21:36,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:21:36,552 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:21:36,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:21:36,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-09-11 15:21:36,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:21:36,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998390012] [2020-09-11 15:21:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:21:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:21:36,835 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 15:21:36,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998390012] [2020-09-11 15:21:36,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:21:36,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:21:36,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180162693] [2020-09-11 15:21:36,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:21:36,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:21:36,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:21:36,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:21:36,868 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 15:21:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:21:36,915 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 15:21:36,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:21:36,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 15:21:36,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:21:36,936 INFO L225 Difference]: With dead ends: 282 [2020-09-11 15:21:36,937 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 15:21:36,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:21:36,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 15:21:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 15:21:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 15:21:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 15:21:37,014 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 15:21:37,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:21:37,016 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 15:21:37,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:21:37,016 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 15:21:37,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:21:37,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:21:37,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:21:37,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:21:37,018 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:21:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:21:37,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1311571333, now seen corresponding path program 1 times [2020-09-11 15:21:37,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:21:37,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232071111] [2020-09-11 15:21:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:21:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:21:37,160 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 15:21:37,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232071111] [2020-09-11 15:21:37,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:21:37,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:21:37,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057528934] [2020-09-11 15:21:37,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:21:37,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:21:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:21:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:21:37,164 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-11 15:21:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:21:37,196 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-11 15:21:37,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:21:37,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 15:21:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:21:37,199 INFO L225 Difference]: With dead ends: 242 [2020-09-11 15:21:37,199 INFO L226 Difference]: Without dead ends: 146 [2020-09-11 15:21:37,200 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 15:21:37,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-11 15:21:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-11 15:21:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-11 15:21:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-09-11 15:21:37,216 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-09-11 15:21:37,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:21:37,216 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-09-11 15:21:37,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:21:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-09-11 15:21:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:21:37,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:21:37,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:21:37,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:21:37,219 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:21:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:21:37,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1994932005, now seen corresponding path program 1 times [2020-09-11 15:21:37,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:21:37,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998006756] [2020-09-11 15:21:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:21:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:21:37,282 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 15:21:37,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998006756] [2020-09-11 15:21:37,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:21:37,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:21:37,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729588732] [2020-09-11 15:21:37,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:21:37,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:21:37,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:21:37,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:21:37,284 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-09-11 15:21:37,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:21:37,292 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-09-11 15:21:37,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:21:37,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 15:21:37,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:21:37,294 INFO L225 Difference]: With dead ends: 144 [2020-09-11 15:21:37,294 INFO L226 Difference]: Without dead ends: 144 [2020-09-11 15:21:37,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:21:37,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-11 15:21:37,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-11 15:21:37,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-11 15:21:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-09-11 15:21:37,306 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-09-11 15:21:37,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:21:37,306 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-09-11 15:21:37,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:21:37,307 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-09-11 15:21:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:21:37,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:21:37,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:21:37,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:21:37,309 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:21:37,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:21:37,309 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-09-11 15:21:37,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:21:37,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663274048] [2020-09-11 15:21:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:21:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:21:37,389 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 15:21:37,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663274048] [2020-09-11 15:21:37,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:21:37,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:21:37,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633459463] [2020-09-11 15:21:37,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:21:37,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:21:37,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:21:37,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:21:37,392 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-09-11 15:21:37,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:21:37,439 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-09-11 15:21:37,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:21:37,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 15:21:37,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:21:37,441 INFO L225 Difference]: With dead ends: 164 [2020-09-11 15:21:37,441 INFO L226 Difference]: Without dead ends: 124 [2020-09-11 15:21:37,442 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 15:21:37,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-11 15:21:37,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-09-11 15:21:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-11 15:21:37,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-09-11 15:21:37,450 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-09-11 15:21:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:21:37,451 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-09-11 15:21:37,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:21:37,451 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-09-11 15:21:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:21:37,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:21:37,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:21:37,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:21:37,453 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:21:37,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:21:37,453 INFO L82 PathProgramCache]: Analyzing trace with hash 852950147, now seen corresponding path program 1 times [2020-09-11 15:21:37,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:21:37,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786092976] [2020-09-11 15:21:37,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:21:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:21:37,525 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 15:21:37,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786092976] [2020-09-11 15:21:37,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:21:37,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:21:37,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351052567] [2020-09-11 15:21:37,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:21:37,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:21:37,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:21:37,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:21:37,528 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-09-11 15:21:37,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:21:37,575 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-09-11 15:21:37,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:21:37,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 15:21:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:21:37,577 INFO L225 Difference]: With dead ends: 122 [2020-09-11 15:21:37,577 INFO L226 Difference]: Without dead ends: 97 [2020-09-11 15:21:37,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:21:37,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-11 15:21:37,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-09-11 15:21:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-11 15:21:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-09-11 15:21:37,583 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-09-11 15:21:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:21:37,584 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-09-11 15:21:37,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:21:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-09-11 15:21:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:21:37,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:21:37,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:21:37,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:21:37,586 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:21:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:21:37,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-09-11 15:21:37,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:21:37,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518271133] [2020-09-11 15:21:37,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:21:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:21:37,699 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 15:21:37,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518271133] [2020-09-11 15:21:37,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:21:37,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:21:37,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368434291] [2020-09-11 15:21:37,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:21:37,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:21:37,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:21:37,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:21:37,703 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-09-11 15:21:37,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:21:37,716 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-09-11 15:21:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:21:37,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-11 15:21:37,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:21:37,718 INFO L225 Difference]: With dead ends: 115 [2020-09-11 15:21:37,718 INFO L226 Difference]: Without dead ends: 98 [2020-09-11 15:21:37,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:21:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-11 15:21:37,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-09-11 15:21:37,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-11 15:21:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-09-11 15:21:37,732 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-09-11 15:21:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:21:37,733 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-09-11 15:21:37,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:21:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-09-11 15:21:37,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:21:37,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:21:37,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:21:37,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:21:37,735 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:21:37,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:21:37,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-09-11 15:21:37,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:21:37,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069194271] [2020-09-11 15:21:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:21:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:21:37,832 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 15:21:37,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069194271] [2020-09-11 15:21:37,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:21:37,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:21:37,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666692749] [2020-09-11 15:21:37,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:21:37,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:21:37,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:21:37,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:21:37,835 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-09-11 15:21:37,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:21:37,894 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-09-11 15:21:37,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:21:37,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-11 15:21:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:21:37,896 INFO L225 Difference]: With dead ends: 92 [2020-09-11 15:21:37,896 INFO L226 Difference]: Without dead ends: 36 [2020-09-11 15:21:37,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:21:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-11 15:21:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-11 15:21:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-11 15:21:37,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-11 15:21:37,899 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-11 15:21:37,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:21:37,899 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-11 15:21:37,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:21:37,899 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-11 15:21:37,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:21:37,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:21:37,900 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 15:21:37,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:21:37,900 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:21:37,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:21:37,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-09-11 15:21:37,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:21:37,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307896169] [2020-09-11 15:21:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:21:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:21:37,973 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 15:21:37,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307896169] [2020-09-11 15:21:37,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:21:37,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:21:37,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44980057] [2020-09-11 15:21:37,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:21:37,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:21:37,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:21:37,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:21:37,976 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-09-11 15:21:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:21:37,992 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-11 15:21:37,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:21:37,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 15:21:37,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:21:37,993 INFO L225 Difference]: With dead ends: 35 [2020-09-11 15:21:37,993 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:21:37,994 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 15:21:37,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:21:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:21:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:21:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:21:37,995 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 15:21:37,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:21:37,995 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:21:37,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:21:37,996 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:21:37,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:21:37,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:21:38,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:21:38 BasicIcfg [2020-09-11 15:21:38,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:21:38,015 INFO L168 Benchmark]: Toolchain (without parser) took 5045.01 ms. Allocated memory was 137.4 MB in the beginning and 254.3 MB in the end (delta: 116.9 MB). Free memory was 98.8 MB in the beginning and 187.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-09-11 15:21:38,017 INFO L168 Benchmark]: CDTParser took 1.56 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-11 15:21:38,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 923.20 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 98.2 MB in the beginning and 157.5 MB in the end (delta: -59.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-11 15:21:38,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.67 ms. Allocated memory is still 200.3 MB. Free memory was 156.8 MB in the beginning and 154.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-11 15:21:38,021 INFO L168 Benchmark]: Boogie Preprocessor took 29.68 ms. Allocated memory is still 200.3 MB. Free memory was 154.8 MB in the beginning and 153.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:21:38,024 INFO L168 Benchmark]: RCFGBuilder took 513.03 ms. Allocated memory is still 200.3 MB. Free memory was 153.4 MB in the beginning and 131.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:21:38,024 INFO L168 Benchmark]: TraceAbstraction took 3512.24 ms. Allocated memory was 200.3 MB in the beginning and 254.3 MB in the end (delta: 54.0 MB). Free memory was 130.7 MB in the beginning and 187.6 MB in the end (delta: -56.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:21:38,035 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.56 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 923.20 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 98.2 MB in the beginning and 157.5 MB in the end (delta: -59.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.67 ms. Allocated memory is still 200.3 MB. Free memory was 156.8 MB in the beginning and 154.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.68 ms. Allocated memory is still 200.3 MB. Free memory was 154.8 MB in the beginning and 153.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 513.03 ms. Allocated memory is still 200.3 MB. Free memory was 153.4 MB in the beginning and 131.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3512.24 ms. Allocated memory was 200.3 MB in the beginning and 254.3 MB in the end (delta: 54.0 MB). Free memory was 130.7 MB in the beginning and 187.6 MB in the end (delta: -56.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2190 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 145 SDtfs, 123 SDslu, 177 SDs, 0 SdLazy, 97 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...