/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 23:39:28,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 23:39:28,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 23:39:28,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 23:39:28,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 23:39:28,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 23:39:28,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 23:39:28,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 23:39:28,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 23:39:28,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 23:39:28,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 23:39:28,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 23:39:28,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 23:39:28,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 23:39:28,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 23:39:28,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 23:39:28,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 23:39:28,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 23:39:28,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 23:39:28,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 23:39:28,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 23:39:28,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 23:39:28,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 23:39:28,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 23:39:28,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 23:39:28,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 23:39:28,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 23:39:28,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 23:39:28,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 23:39:28,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 23:39:28,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 23:39:28,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 23:39:28,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 23:39:28,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 23:39:28,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 23:39:28,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 23:39:28,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-11-11 23:39:28,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 23:39:28,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 23:39:28,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 23:39:28,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 23:39:28,600 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 23:39:28,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 23:39:28,601 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 23:39:28,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 23:39:28,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 23:39:28,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 23:39:28,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 23:39:28,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 23:39:28,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 23:39:28,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 23:39:28,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 23:39:28,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 23:39:28,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 23:39:28,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 23:39:28,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 23:39:28,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 23:39:28,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 23:39:28,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:39:28,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 23:39:28,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 23:39:28,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 23:39:28,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 23:39:28,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 23:39:28,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 23:39:28,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 23:39:29,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 23:39:29,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 23:39:29,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 23:39:29,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 23:39:29,097 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 23:39:29,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-11-11 23:39:29,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21cdb8a7f/7d55c8c05c764e6e880febab593af0c8/FLAG348fe9f88 [2020-11-11 23:39:30,052 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 23:39:30,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-11-11 23:39:30,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21cdb8a7f/7d55c8c05c764e6e880febab593af0c8/FLAG348fe9f88 [2020-11-11 23:39:30,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21cdb8a7f/7d55c8c05c764e6e880febab593af0c8 [2020-11-11 23:39:30,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 23:39:30,316 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 23:39:30,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 23:39:30,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 23:39:30,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 23:39:30,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:39:30" (1/1) ... [2020-11-11 23:39:30,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91692a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:30, skipping insertion in model container [2020-11-11 23:39:30,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:39:30" (1/1) ... [2020-11-11 23:39:30,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 23:39:30,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 23:39:30,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:39:30,819 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 23:39:30,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:39:31,073 INFO L208 MainTranslator]: Completed translation [2020-11-11 23:39:31,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:31 WrapperNode [2020-11-11 23:39:31,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 23:39:31,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 23:39:31,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 23:39:31,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 23:39:31,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:31" (1/1) ... [2020-11-11 23:39:31,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:31" (1/1) ... [2020-11-11 23:39:31,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 23:39:31,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 23:39:31,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 23:39:31,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 23:39:31,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:31" (1/1) ... [2020-11-11 23:39:31,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:31" (1/1) ... [2020-11-11 23:39:31,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:31" (1/1) ... [2020-11-11 23:39:31,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:31" (1/1) ... [2020-11-11 23:39:31,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:31" (1/1) ... [2020-11-11 23:39:31,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:31" (1/1) ... [2020-11-11 23:39:31,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:31" (1/1) ... [2020-11-11 23:39:31,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 23:39:31,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 23:39:31,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 23:39:31,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 23:39:31,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:39:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 23:39:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 23:39:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 23:39:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 23:39:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 23:39:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 23:39:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 23:39:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 23:39:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 23:39:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 23:39:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 23:39:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 23:39:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 23:39:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 23:39:31,334 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 23:39:31,951 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 23:39:31,951 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 23:39:31,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:39:31 BoogieIcfgContainer [2020-11-11 23:39:31,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 23:39:31,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 23:39:31,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 23:39:31,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 23:39:31,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 11:39:30" (1/3) ... [2020-11-11 23:39:31,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d922aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:39:31, skipping insertion in model container [2020-11-11 23:39:31,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:39:31" (2/3) ... [2020-11-11 23:39:31,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d922aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:39:31, skipping insertion in model container [2020-11-11 23:39:31,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:39:31" (3/3) ... [2020-11-11 23:39:31,965 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-11-11 23:39:31,983 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 23:39:31,983 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 23:39:31,987 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 23:39:31,988 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 23:39:32,039 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,040 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,040 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,041 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,041 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,043 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,043 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,044 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,044 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,044 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,044 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,045 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,045 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,045 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,045 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,048 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,049 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,050 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,051 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,051 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,051 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,066 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,067 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,069 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,079 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,079 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,079 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,080 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,083 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,084 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,084 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,084 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:39:32,086 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 23:39:32,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 23:39:32,126 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 23:39:32,126 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 23:39:32,126 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 23:39:32,126 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 23:39:32,126 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 23:39:32,127 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 23:39:32,127 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 23:39:32,127 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 23:39:32,140 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 23:39:32,143 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-11 23:39:32,146 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-11 23:39:32,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-11 23:39:32,194 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-11 23:39:32,194 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 23:39:32,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-11 23:39:32,202 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-11 23:39:34,895 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-11 23:39:35,659 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-11 23:39:35,766 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-11-11 23:39:35,993 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-11 23:39:36,534 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-11-11 23:39:37,127 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-11 23:39:37,239 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-11 23:39:37,344 INFO L131 LiptonReduction]: Checked pairs total: 3166 [2020-11-11 23:39:37,345 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-11 23:39:37,352 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-11-11 23:39:37,403 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:37,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-11 23:39:37,415 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:39:37,415 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:39:37,416 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:39:37,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:39:37,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1742955516, now seen corresponding path program 1 times [2020-11-11 23:39:37,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:39:37,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058446991] [2020-11-11 23:39:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:39:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:39:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:39:37,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058446991] [2020-11-11 23:39:37,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:39:37,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-11 23:39:37,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140706411] [2020-11-11 23:39:37,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:39:37,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:39:37,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:39:37,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:39:37,759 INFO L87 Difference]: Start difference. First operand has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:39:37,835 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-11 23:39:37,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:39:37,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2020-11-11 23:39:37,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:39:37,864 INFO L225 Difference]: With dead ends: 282 [2020-11-11 23:39:37,864 INFO L226 Difference]: Without dead ends: 218 [2020-11-11 23:39:37,867 INFO L749 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 [2020-11-11 23:39:37,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-11 23:39:37,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-11 23:39:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.7649769585253456) internal successors, (600), 217 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-11 23:39:37,956 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-11 23:39:37,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:39:37,957 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-11 23:39:37,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-11 23:39:37,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 23:39:37,959 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:39:37,959 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:39:37,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 23:39:37,960 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:39:37,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:39:37,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1802974335, now seen corresponding path program 1 times [2020-11-11 23:39:37,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:39:37,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259216224] [2020-11-11 23:39:37,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:39:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:39:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:39:38,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259216224] [2020-11-11 23:39:38,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:39:38,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:39:38,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406953835] [2020-11-11 23:39:38,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:39:38,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:39:38,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:39:38,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:39:38,043 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:39:38,099 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-11 23:39:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:39:38,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2020-11-11 23:39:38,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:39:38,107 INFO L225 Difference]: With dead ends: 242 [2020-11-11 23:39:38,107 INFO L226 Difference]: Without dead ends: 146 [2020-11-11 23:39:38,109 INFO L749 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 [2020-11-11 23:39:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-11 23:39:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-11 23:39:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.496551724137931) internal successors, (362), 145 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-11 23:39:38,139 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-11-11 23:39:38,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:39:38,139 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-11 23:39:38,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,140 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-11 23:39:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-11 23:39:38,143 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:39:38,144 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:39:38,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 23:39:38,144 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:39:38,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:39:38,145 INFO L82 PathProgramCache]: Analyzing trace with hash 680668667, now seen corresponding path program 1 times [2020-11-11 23:39:38,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:39:38,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64413822] [2020-11-11 23:39:38,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:39:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:39:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:39:38,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64413822] [2020-11-11 23:39:38,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:39:38,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:39:38,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454812073] [2020-11-11 23:39:38,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:39:38,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:39:38,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:39:38,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:39:38,200 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:39:38,216 INFO L93 Difference]: Finished difference Result 138 states and 336 transitions. [2020-11-11 23:39:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:39:38,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2020-11-11 23:39:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:39:38,219 INFO L225 Difference]: With dead ends: 138 [2020-11-11 23:39:38,219 INFO L226 Difference]: Without dead ends: 138 [2020-11-11 23:39:38,220 INFO L749 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 [2020-11-11 23:39:38,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-11 23:39:38,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-11-11 23:39:38,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.4525547445255476) internal successors, (336), 137 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 336 transitions. [2020-11-11 23:39:38,231 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 336 transitions. Word has length 11 [2020-11-11 23:39:38,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:39:38,232 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 336 transitions. [2020-11-11 23:39:38,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,233 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 336 transitions. [2020-11-11 23:39:38,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-11 23:39:38,234 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:39:38,234 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:39:38,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 23:39:38,235 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:39:38,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:39:38,235 INFO L82 PathProgramCache]: Analyzing trace with hash -374109903, now seen corresponding path program 1 times [2020-11-11 23:39:38,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:39:38,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150242827] [2020-11-11 23:39:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:39:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:39:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:39:38,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150242827] [2020-11-11 23:39:38,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:39:38,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-11 23:39:38,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313468697] [2020-11-11 23:39:38,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:39:38,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:39:38,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:39:38,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:39:38,319 INFO L87 Difference]: Start difference. First operand 138 states and 336 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:39:38,332 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-11-11 23:39:38,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:39:38,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2020-11-11 23:39:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:39:38,335 INFO L225 Difference]: With dead ends: 134 [2020-11-11 23:39:38,335 INFO L226 Difference]: Without dead ends: 134 [2020-11-11 23:39:38,335 INFO L749 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 [2020-11-11 23:39:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-11 23:39:38,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-11-11 23:39:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.43609022556391) internal successors, (324), 133 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-11-11 23:39:38,356 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 12 [2020-11-11 23:39:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:39:38,357 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-11-11 23:39:38,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,358 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-11-11 23:39:38,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:39:38,360 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:39:38,360 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:39:38,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 23:39:38,361 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:39:38,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:39:38,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1695614458, now seen corresponding path program 1 times [2020-11-11 23:39:38,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:39:38,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377941834] [2020-11-11 23:39:38,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:39:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:39:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:39:38,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377941834] [2020-11-11 23:39:38,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:39:38,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:39:38,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944082426] [2020-11-11 23:39:38,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:39:38,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:39:38,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:39:38,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:39:38,463 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:39:38,490 INFO L93 Difference]: Finished difference Result 194 states and 466 transitions. [2020-11-11 23:39:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:39:38,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2020-11-11 23:39:38,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:39:38,493 INFO L225 Difference]: With dead ends: 194 [2020-11-11 23:39:38,493 INFO L226 Difference]: Without dead ends: 104 [2020-11-11 23:39:38,493 INFO L749 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 [2020-11-11 23:39:38,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-11 23:39:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-11-11 23:39:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.3883495145631066) internal successors, (246), 103 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-11-11 23:39:38,500 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 13 [2020-11-11 23:39:38,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:39:38,501 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-11-11 23:39:38,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-11-11 23:39:38,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:39:38,502 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:39:38,502 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:39:38,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 23:39:38,502 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:39:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:39:38,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1287468770, now seen corresponding path program 2 times [2020-11-11 23:39:38,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:39:38,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912027596] [2020-11-11 23:39:38,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:39:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:39:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:39:38,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912027596] [2020-11-11 23:39:38,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:39:38,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:39:38,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169881121] [2020-11-11 23:39:38,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:39:38,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:39:38,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:39:38,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:39:38,543 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:39:38,579 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-11-11 23:39:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:39:38,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2020-11-11 23:39:38,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:39:38,581 INFO L225 Difference]: With dead ends: 128 [2020-11-11 23:39:38,581 INFO L226 Difference]: Without dead ends: 68 [2020-11-11 23:39:38,582 INFO L749 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 [2020-11-11 23:39:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-11 23:39:38,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-11 23:39:38,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.1492537313432836) internal successors, (144), 67 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-11-11 23:39:38,587 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-11-11 23:39:38,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:39:38,587 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-11-11 23:39:38,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,587 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-11-11 23:39:38,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:39:38,588 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:39:38,588 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:39:38,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 23:39:38,588 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:39:38,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:39:38,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1287493880, now seen corresponding path program 3 times [2020-11-11 23:39:38,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:39:38,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885319061] [2020-11-11 23:39:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:39:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:39:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:39:38,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885319061] [2020-11-11 23:39:38,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:39:38,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:39:38,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398001159] [2020-11-11 23:39:38,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:39:38,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:39:38,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:39:38,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:39:38,705 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:39:38,754 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-11-11 23:39:38,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:39:38,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2020-11-11 23:39:38,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:39:38,756 INFO L225 Difference]: With dead ends: 81 [2020-11-11 23:39:38,756 INFO L226 Difference]: Without dead ends: 59 [2020-11-11 23:39:38,756 INFO L749 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 [2020-11-11 23:39:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-11 23:39:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-11 23:39:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.9655172413793103) internal successors, (114), 58 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-11-11 23:39:38,760 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-11-11 23:39:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:39:38,760 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-11-11 23:39:38,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,761 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-11-11 23:39:38,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-11 23:39:38,761 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:39:38,761 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:39:38,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 23:39:38,762 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:39:38,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:39:38,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1489886777, now seen corresponding path program 1 times [2020-11-11 23:39:38,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:39:38,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945106510] [2020-11-11 23:39:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:39:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:39:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:39:38,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945106510] [2020-11-11 23:39:38,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:39:38,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:39:38,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118333318] [2020-11-11 23:39:38,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:39:38,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:39:38,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:39:38,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:39:38,856 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:39:38,925 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-11-11 23:39:38,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:39:38,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2020-11-11 23:39:38,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:39:38,926 INFO L225 Difference]: With dead ends: 60 [2020-11-11 23:39:38,927 INFO L226 Difference]: Without dead ends: 45 [2020-11-11 23:39:38,927 INFO L749 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 [2020-11-11 23:39:38,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-11 23:39:38,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-11 23:39:38,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 44 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-11-11 23:39:38,930 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-11-11 23:39:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:39:38,930 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-11-11 23:39:38,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:38,930 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-11-11 23:39:38,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 23:39:38,931 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:39:38,931 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:39:38,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 23:39:38,931 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:39:38,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:39:38,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1058152393, now seen corresponding path program 1 times [2020-11-11 23:39:38,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:39:38,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889432106] [2020-11-11 23:39:38,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:39:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:39:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:39:38,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889432106] [2020-11-11 23:39:38,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:39:38,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:39:38,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678041921] [2020-11-11 23:39:38,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:39:38,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:39:38,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:39:38,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:39:38,994 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:39,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:39:39,054 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-11-11 23:39:39,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 23:39:39,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2020-11-11 23:39:39,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:39:39,056 INFO L225 Difference]: With dead ends: 42 [2020-11-11 23:39:39,056 INFO L226 Difference]: Without dead ends: 36 [2020-11-11 23:39:39,056 INFO L749 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 [2020-11-11 23:39:39,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-11 23:39:39,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-11 23:39:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:39,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-11 23:39:39,059 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-11-11 23:39:39,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:39:39,059 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-11 23:39:39,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:39,059 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-11 23:39:39,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-11 23:39:39,060 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:39:39,060 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:39:39,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 23:39:39,060 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:39:39,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:39:39,061 INFO L82 PathProgramCache]: Analyzing trace with hash -840966858, now seen corresponding path program 1 times [2020-11-11 23:39:39,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:39:39,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737124681] [2020-11-11 23:39:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:39:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:39:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:39:39,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737124681] [2020-11-11 23:39:39,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:39:39,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:39:39,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90801605] [2020-11-11 23:39:39,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:39:39,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:39:39,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:39:39,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:39:39,093 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:39:39,099 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-11 23:39:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:39:39,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2020-11-11 23:39:39,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:39:39,100 INFO L225 Difference]: With dead ends: 35 [2020-11-11 23:39:39,100 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 23:39:39,101 INFO L749 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 [2020-11-11 23:39:39,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 23:39:39,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 23:39:39,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:39,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 23:39:39,102 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-11 23:39:39,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:39:39,102 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 23:39:39,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:39:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 23:39:39,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 23:39:39,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-11 23:39:39,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 11:39:39 BasicIcfg [2020-11-11 23:39:39,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 23:39:39,109 INFO L168 Benchmark]: Toolchain (without parser) took 8797.50 ms. Allocated memory was 302.0 MB in the beginning and 383.8 MB in the end (delta: 81.8 MB). Free memory was 276.1 MB in the beginning and 211.6 MB in the end (delta: 64.5 MB). Peak memory consumption was 147.4 MB. Max. memory is 16.0 GB. [2020-11-11 23:39:39,110 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:39:39,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.28 ms. Allocated memory is still 302.0 MB. Free memory was 275.4 MB in the beginning and 277.6 MB in the end (delta: -2.2 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:39:39,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.58 ms. Allocated memory is still 302.0 MB. Free memory was 277.6 MB in the beginning and 275.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:39:39,112 INFO L168 Benchmark]: Boogie Preprocessor took 62.41 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 274.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:39:39,113 INFO L168 Benchmark]: RCFGBuilder took 724.26 ms. Allocated memory is still 302.0 MB. Free memory was 274.4 MB in the beginning and 251.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:39:39,114 INFO L168 Benchmark]: TraceAbstraction took 7150.53 ms. Allocated memory was 302.0 MB in the beginning and 383.8 MB in the end (delta: 81.8 MB). Free memory was 251.4 MB in the beginning and 211.6 MB in the end (delta: 39.8 MB). Peak memory consumption was 121.6 MB. Max. memory is 16.0 GB. [2020-11-11 23:39:39,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 758.28 ms. Allocated memory is still 302.0 MB. Free memory was 275.4 MB in the beginning and 277.6 MB in the end (delta: -2.2 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 88.58 ms. Allocated memory is still 302.0 MB. Free memory was 277.6 MB in the beginning and 275.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 62.41 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 274.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 724.26 ms. Allocated memory is still 302.0 MB. Free memory was 274.4 MB in the beginning and 251.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7150.53 ms. Allocated memory was 302.0 MB in the beginning and 383.8 MB in the end (delta: 81.8 MB). Free memory was 251.4 MB in the beginning and 211.6 MB in the end (delta: 39.8 MB). Peak memory consumption was 121.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 968 VarBasedMoverChecksPositive, 62 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 46 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.1s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 72 TotalNumberOfCompositions, 3166 MoverChecksTotal - PositiveResult [Line: 17]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 179 SDtfs, 137 SDslu, 183 SDs, 0 SdLazy, 121 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 3805 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...